./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix031.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix031.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:15:41,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:15:41,581 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:15:41,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:15:41,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:15:41,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:15:41,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:15:41,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:15:41,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:15:41,626 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:15:41,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:15:41,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:15:41,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:15:41,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:15:41,628 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:15:41,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:15:41,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:15:41,629 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:15:41,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:15:41,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:15:41,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:15:41,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:15:41,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:15:41,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:15:41,630 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:15:41,631 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:15:41,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:15:41,631 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:15:41,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:15:41,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:15:41,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:15:41,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:15:41,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:15:41,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:15:41,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:15:41,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:15:41,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:15:41,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:15:41,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:15:41,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:15:41,635 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:15:41,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:15:41,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:15:41,635 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:15:41,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:15:41,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:15:41,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:15:41,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:15:41,843 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:15:41,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i [2024-06-28 03:15:42,754 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:15:42,975 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:15:42,975 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.oepc.i [2024-06-28 03:15:42,986 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dce4b1e84/94b435ac3c2d4459a6847af2a52ec509/FLAGa3bd36837 [2024-06-28 03:15:43,006 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dce4b1e84/94b435ac3c2d4459a6847af2a52ec509 [2024-06-28 03:15:43,008 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:15:43,008 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:15:43,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix031.oepc.yml/witness.yml [2024-06-28 03:15:43,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:15:43,101 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:15:43,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:15:43,102 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:15:43,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:15:43,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:15:43" (1/2) ... [2024-06-28 03:15:43,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2adce58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:15:43, skipping insertion in model container [2024-06-28 03:15:43,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:15:43" (1/2) ... [2024-06-28 03:15:43,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75dbc1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:15:43, skipping insertion in model container [2024-06-28 03:15:43,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:15:43" (2/2) ... [2024-06-28 03:15:43,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2adce58f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43, skipping insertion in model container [2024-06-28 03:15:43,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:15:43" (2/2) ... [2024-06-28 03:15:43,108 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:15:43,152 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:15:43,153 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((((! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:15:43,153 INFO L97 edCorrectnessWitness]: Location invariant before [L831-L831] ((((((((((((((((((! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:15:43,153 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:15:43,153 INFO L106 edCorrectnessWitness]: ghost_update [L828-L828] multithreaded = 1; [2024-06-28 03:15:43,176 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:15:43,430 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:15:43,437 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:15:43,522 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:15:43,550 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:15:43,550 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43 WrapperNode [2024-06-28 03:15:43,550 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:15:43,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:15:43,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:15:43,556 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:15:43,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (1/1) ... [2024-06-28 03:15:43,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (1/1) ... [2024-06-28 03:15:43,615 INFO L138 Inliner]: procedures = 174, calls = 42, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 123 [2024-06-28 03:15:43,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:15:43,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:15:43,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:15:43,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:15:43,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (1/1) ... [2024-06-28 03:15:43,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (1/1) ... [2024-06-28 03:15:43,635 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (1/1) ... [2024-06-28 03:15:43,646 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:15:43,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (1/1) ... [2024-06-28 03:15:43,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (1/1) ... [2024-06-28 03:15:43,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (1/1) ... [2024-06-28 03:15:43,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (1/1) ... [2024-06-28 03:15:43,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (1/1) ... [2024-06-28 03:15:43,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (1/1) ... [2024-06-28 03:15:43,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:15:43,660 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:15:43,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:15:43,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:15:43,660 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (1/1) ... [2024-06-28 03:15:43,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:15:43,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:15:43,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:15:43,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:15:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:15:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:15:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:15:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:15:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:15:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:15:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:15:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:15:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:15:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:15:43,736 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:15:43,821 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:15:43,823 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:15:44,103 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:15:44,103 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:15:44,238 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:15:44,238 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:15:44,240 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:15:44 BoogieIcfgContainer [2024-06-28 03:15:44,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:15:44,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:15:44,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:15:44,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:15:44,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:15:43" (1/4) ... [2024-06-28 03:15:44,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d6e0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:15:44, skipping insertion in model container [2024-06-28 03:15:44,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:15:43" (2/4) ... [2024-06-28 03:15:44,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d6e0c4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:15:44, skipping insertion in model container [2024-06-28 03:15:44,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:15:43" (3/4) ... [2024-06-28 03:15:44,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d6e0c4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:15:44, skipping insertion in model container [2024-06-28 03:15:44,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:15:44" (4/4) ... [2024-06-28 03:15:44,247 INFO L112 eAbstractionObserver]: Analyzing ICFG mix031.oepc.i [2024-06-28 03:15:44,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:15:44,259 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:15:44,259 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:15:44,291 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:15:44,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-28 03:15:44,351 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-28 03:15:44,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:15:44,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:15:44,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-28 03:15:44,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-28 03:15:44,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:15:44,368 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a6db057, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:15:44,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:15:44,371 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:15:44,371 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 03:15:44,371 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:15:44,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:44,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:15:44,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:44,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:44,377 INFO L85 PathProgramCache]: Analyzing trace with hash 341599561, now seen corresponding path program 1 times [2024-06-28 03:15:44,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:44,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947940765] [2024-06-28 03:15:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:44,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:45,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:45,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947940765] [2024-06-28 03:15:45,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947940765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:45,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:45,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:15:45,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869780851] [2024-06-28 03:15:45,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:45,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:15:45,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:45,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:15:45,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:15:45,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-06-28 03:15:45,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:45,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:45,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-06-28 03:15:45,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:45,350 INFO L124 PetriNetUnfolderBase]: 189/359 cut-off events. [2024-06-28 03:15:45,350 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 03:15:45,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 359 events. 189/359 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1442 event pairs, 115 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 704. Up to 333 conditions per place. [2024-06-28 03:15:45,355 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 22 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-28 03:15:45,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 121 flow [2024-06-28 03:15:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:15:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:15:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-06-28 03:15:45,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-06-28 03:15:45,370 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 60 transitions. [2024-06-28 03:15:45,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 121 flow [2024-06-28 03:15:45,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:15:45,373 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-28 03:15:45,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-28 03:15:45,377 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-28 03:15:45,377 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-28 03:15:45,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:45,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:45,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:45,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:15:45,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:45,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:45,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1860020146, now seen corresponding path program 1 times [2024-06-28 03:15:45,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:45,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498845520] [2024-06-28 03:15:45,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:45,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:45,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:45,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498845520] [2024-06-28 03:15:45,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498845520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:45,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:45,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:15:45,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295837116] [2024-06-28 03:15:45,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:45,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:15:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:45,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:15:45,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:15:45,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-06-28 03:15:45,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:45,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:45,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-06-28 03:15:45,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:46,011 INFO L124 PetriNetUnfolderBase]: 186/354 cut-off events. [2024-06-28 03:15:46,011 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-28 03:15:46,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 354 events. 186/354 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1414 event pairs, 94 based on Foata normal form. 2/348 useless extension candidates. Maximal degree in co-relation 784. Up to 319 conditions per place. [2024-06-28 03:15:46,015 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 26 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-28 03:15:46,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 163 flow [2024-06-28 03:15:46,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:15:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:15:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-06-28 03:15:46,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 03:15:46,019 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 77 transitions. [2024-06-28 03:15:46,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 163 flow [2024-06-28 03:15:46,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:15:46,023 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-28 03:15:46,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-28 03:15:46,024 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-28 03:15:46,024 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-28 03:15:46,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:46,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:46,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:46,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:15:46,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:46,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:46,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1826050970, now seen corresponding path program 1 times [2024-06-28 03:15:46,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:46,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339351772] [2024-06-28 03:15:46,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:46,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:46,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339351772] [2024-06-28 03:15:46,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339351772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:46,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:46,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:15:46,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762212079] [2024-06-28 03:15:46,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:46,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:15:46,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:46,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:15:46,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:15:46,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-28 03:15:46,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:46,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:46,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-28 03:15:46,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:46,672 INFO L124 PetriNetUnfolderBase]: 219/412 cut-off events. [2024-06-28 03:15:46,672 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2024-06-28 03:15:46,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 412 events. 219/412 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1631 event pairs, 99 based on Foata normal form. 2/411 useless extension candidates. Maximal degree in co-relation 1004. Up to 366 conditions per place. [2024-06-28 03:15:46,674 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 31 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-28 03:15:46,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 213 flow [2024-06-28 03:15:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:15:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:15:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-28 03:15:46,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-28 03:15:46,678 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 90 transitions. [2024-06-28 03:15:46,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 213 flow [2024-06-28 03:15:46,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 204 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:15:46,680 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 123 flow [2024-06-28 03:15:46,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-28 03:15:46,681 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-28 03:15:46,681 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 123 flow [2024-06-28 03:15:46,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:46,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:46,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:46,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:15:46,682 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:46,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash 468244615, now seen corresponding path program 1 times [2024-06-28 03:15:46,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:46,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250834461] [2024-06-28 03:15:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:46,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:47,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:47,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250834461] [2024-06-28 03:15:47,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250834461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:47,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:47,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:15:47,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380137141] [2024-06-28 03:15:47,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:47,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:15:47,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:47,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:15:47,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:15:47,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-28 03:15:47,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:47,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:47,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-28 03:15:47,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:47,422 INFO L124 PetriNetUnfolderBase]: 216/409 cut-off events. [2024-06-28 03:15:47,422 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-06-28 03:15:47,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 409 events. 216/409 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1609 event pairs, 78 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 1084. Up to 352 conditions per place. [2024-06-28 03:15:47,425 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 35 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-28 03:15:47,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 261 flow [2024-06-28 03:15:47,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:15:47,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:15:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:15:47,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2024-06-28 03:15:47,428 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 123 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:15:47,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 261 flow [2024-06-28 03:15:47,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 246 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 03:15:47,430 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 147 flow [2024-06-28 03:15:47,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-06-28 03:15:47,432 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-06-28 03:15:47,432 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 147 flow [2024-06-28 03:15:47,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:47,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:47,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:47,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:15:47,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:47,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash 817225040, now seen corresponding path program 1 times [2024-06-28 03:15:47,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:47,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751310061] [2024-06-28 03:15:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:47,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:47,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:47,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751310061] [2024-06-28 03:15:47,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751310061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:47,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:47,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:15:47,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797626842] [2024-06-28 03:15:47,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:47,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:15:47,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:47,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:15:47,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:15:48,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-28 03:15:48,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:48,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:48,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-28 03:15:48,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:48,230 INFO L124 PetriNetUnfolderBase]: 230/442 cut-off events. [2024-06-28 03:15:48,230 INFO L125 PetriNetUnfolderBase]: For 629/629 co-relation queries the response was YES. [2024-06-28 03:15:48,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 442 events. 230/442 cut-off events. For 629/629 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1735 event pairs, 100 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 1249. Up to 402 conditions per place. [2024-06-28 03:15:48,233 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 29 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-06-28 03:15:48,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 235 flow [2024-06-28 03:15:48,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:15:48,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:15:48,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-06-28 03:15:48,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-28 03:15:48,234 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 147 flow. Second operand 5 states and 71 transitions. [2024-06-28 03:15:48,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 235 flow [2024-06-28 03:15:48,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 214 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:48,240 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 153 flow [2024-06-28 03:15:48,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-28 03:15:48,245 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-06-28 03:15:48,245 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 153 flow [2024-06-28 03:15:48,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:48,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:48,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:48,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:15:48,247 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:48,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:48,247 INFO L85 PathProgramCache]: Analyzing trace with hash -988447706, now seen corresponding path program 1 times [2024-06-28 03:15:48,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:48,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767100404] [2024-06-28 03:15:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:48,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:49,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:49,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767100404] [2024-06-28 03:15:49,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767100404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:49,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:49,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944685855] [2024-06-28 03:15:49,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:49,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:49,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:49,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:49,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:49,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-28 03:15:49,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 153 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:49,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:49,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-28 03:15:49,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:49,203 INFO L124 PetriNetUnfolderBase]: 244/453 cut-off events. [2024-06-28 03:15:49,203 INFO L125 PetriNetUnfolderBase]: For 839/839 co-relation queries the response was YES. [2024-06-28 03:15:49,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 453 events. 244/453 cut-off events. For 839/839 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1721 event pairs, 61 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 1348. Up to 382 conditions per place. [2024-06-28 03:15:49,207 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 46 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-06-28 03:15:49,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 349 flow [2024-06-28 03:15:49,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:49,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 03:15:49,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2024-06-28 03:15:49,208 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 153 flow. Second operand 8 states and 131 transitions. [2024-06-28 03:15:49,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 349 flow [2024-06-28 03:15:49,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 338 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:15:49,210 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 202 flow [2024-06-28 03:15:49,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=202, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-28 03:15:49,212 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2024-06-28 03:15:49,213 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 202 flow [2024-06-28 03:15:49,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:49,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:49,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:49,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:15:49,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:49,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:49,214 INFO L85 PathProgramCache]: Analyzing trace with hash -435826716, now seen corresponding path program 1 times [2024-06-28 03:15:49,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:49,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123289247] [2024-06-28 03:15:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:49,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:49,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:49,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123289247] [2024-06-28 03:15:49,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123289247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:49,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:49,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:15:49,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984076932] [2024-06-28 03:15:49,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:49,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:15:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:15:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:15:49,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:15:49,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:49,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:49,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:15:49,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:50,011 INFO L124 PetriNetUnfolderBase]: 258/472 cut-off events. [2024-06-28 03:15:50,012 INFO L125 PetriNetUnfolderBase]: For 1313/1313 co-relation queries the response was YES. [2024-06-28 03:15:50,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 472 events. 258/472 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1790 event pairs, 71 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 1575. Up to 449 conditions per place. [2024-06-28 03:15:50,014 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 35 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-28 03:15:50,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 310 flow [2024-06-28 03:15:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:15:50,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:15:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-28 03:15:50,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 03:15:50,015 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 202 flow. Second operand 6 states and 77 transitions. [2024-06-28 03:15:50,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 310 flow [2024-06-28 03:15:50,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 281 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:15:50,018 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 206 flow [2024-06-28 03:15:50,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-28 03:15:50,019 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2024-06-28 03:15:50,019 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 206 flow [2024-06-28 03:15:50,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:50,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:50,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:50,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:15:50,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:50,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:50,020 INFO L85 PathProgramCache]: Analyzing trace with hash -615277527, now seen corresponding path program 1 times [2024-06-28 03:15:50,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:50,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706992265] [2024-06-28 03:15:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:50,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:50,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:50,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706992265] [2024-06-28 03:15:50,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706992265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:50,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:50,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:15:50,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845745709] [2024-06-28 03:15:50,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:50,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:15:50,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:15:50,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:15:50,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-28 03:15:50,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:50,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:50,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-28 03:15:50,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:50,759 INFO L124 PetriNetUnfolderBase]: 244/460 cut-off events. [2024-06-28 03:15:50,760 INFO L125 PetriNetUnfolderBase]: For 1717/1717 co-relation queries the response was YES. [2024-06-28 03:15:50,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 460 events. 244/460 cut-off events. For 1717/1717 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1785 event pairs, 68 based on Foata normal form. 1/461 useless extension candidates. Maximal degree in co-relation 1595. Up to 399 conditions per place. [2024-06-28 03:15:50,762 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 38 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2024-06-28 03:15:50,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 358 flow [2024-06-28 03:15:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:15:50,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:15:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-28 03:15:50,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:15:50,763 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 206 flow. Second operand 6 states and 88 transitions. [2024-06-28 03:15:50,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 358 flow [2024-06-28 03:15:50,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 341 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:50,765 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 236 flow [2024-06-28 03:15:50,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-28 03:15:50,766 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-06-28 03:15:50,766 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 236 flow [2024-06-28 03:15:50,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:50,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:50,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:50,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:15:50,767 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:50,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:50,767 INFO L85 PathProgramCache]: Analyzing trace with hash -975313512, now seen corresponding path program 1 times [2024-06-28 03:15:50,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:50,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649201613] [2024-06-28 03:15:50,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:50,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:51,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:51,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649201613] [2024-06-28 03:15:51,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649201613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:51,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:51,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:51,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479475561] [2024-06-28 03:15:51,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:51,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:51,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:51,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:51,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:51,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-28 03:15:51,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 236 flow. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:51,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:51,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-28 03:15:51,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:51,834 INFO L124 PetriNetUnfolderBase]: 258/470 cut-off events. [2024-06-28 03:15:51,834 INFO L125 PetriNetUnfolderBase]: For 2159/2159 co-relation queries the response was YES. [2024-06-28 03:15:51,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 470 events. 258/470 cut-off events. For 2159/2159 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1745 event pairs, 45 based on Foata normal form. 4/474 useless extension candidates. Maximal degree in co-relation 1708. Up to 376 conditions per place. [2024-06-28 03:15:51,836 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 51 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2024-06-28 03:15:51,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 70 transitions, 418 flow [2024-06-28 03:15:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:15:51,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:15:51,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 03:15:51,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-28 03:15:51,838 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 236 flow. Second operand 9 states and 141 transitions. [2024-06-28 03:15:51,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 70 transitions, 418 flow [2024-06-28 03:15:51,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 408 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 03:15:51,840 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 246 flow [2024-06-28 03:15:51,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=246, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-06-28 03:15:51,840 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2024-06-28 03:15:51,840 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 246 flow [2024-06-28 03:15:51,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:51,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:51,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:51,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:15:51,841 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:51,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:51,841 INFO L85 PathProgramCache]: Analyzing trace with hash -625735377, now seen corresponding path program 2 times [2024-06-28 03:15:51,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:51,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069238536] [2024-06-28 03:15:51,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:51,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:52,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:52,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069238536] [2024-06-28 03:15:52,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069238536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:52,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:52,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:15:52,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243229980] [2024-06-28 03:15:52,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:52,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:15:52,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:52,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:15:52,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:15:52,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-28 03:15:52,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:52,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:52,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-28 03:15:52,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:52,639 INFO L124 PetriNetUnfolderBase]: 239/450 cut-off events. [2024-06-28 03:15:52,639 INFO L125 PetriNetUnfolderBase]: For 2534/2534 co-relation queries the response was YES. [2024-06-28 03:15:52,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 450 events. 239/450 cut-off events. For 2534/2534 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1716 event pairs, 64 based on Foata normal form. 1/451 useless extension candidates. Maximal degree in co-relation 1729. Up to 402 conditions per place. [2024-06-28 03:15:52,641 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 36 selfloop transitions, 8 changer transitions 0/50 dead transitions. [2024-06-28 03:15:52,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 50 transitions, 348 flow [2024-06-28 03:15:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:15:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:15:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-06-28 03:15:52,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:15:52,642 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 246 flow. Second operand 6 states and 81 transitions. [2024-06-28 03:15:52,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 50 transitions, 348 flow [2024-06-28 03:15:52,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 50 transitions, 310 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:15:52,644 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 229 flow [2024-06-28 03:15:52,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-06-28 03:15:52,645 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-06-28 03:15:52,645 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 229 flow [2024-06-28 03:15:52,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:52,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:52,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:52,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:15:52,645 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:52,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:52,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1179838057, now seen corresponding path program 1 times [2024-06-28 03:15:52,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:52,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440246303] [2024-06-28 03:15:52,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:52,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:53,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440246303] [2024-06-28 03:15:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440246303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:53,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:53,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:53,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869304494] [2024-06-28 03:15:53,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:53,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:53,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:53,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:53,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:53,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:15:53,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 229 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:53,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:53,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:15:53,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:53,612 INFO L124 PetriNetUnfolderBase]: 250/458 cut-off events. [2024-06-28 03:15:53,612 INFO L125 PetriNetUnfolderBase]: For 2935/2935 co-relation queries the response was YES. [2024-06-28 03:15:53,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1774 conditions, 458 events. 250/458 cut-off events. For 2935/2935 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1682 event pairs, 63 based on Foata normal form. 3/461 useless extension candidates. Maximal degree in co-relation 1748. Up to 425 conditions per place. [2024-06-28 03:15:53,615 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 41 selfloop transitions, 10 changer transitions 0/55 dead transitions. [2024-06-28 03:15:53,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 361 flow [2024-06-28 03:15:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:15:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:15:53,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 03:15:53,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 03:15:53,616 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 229 flow. Second operand 7 states and 88 transitions. [2024-06-28 03:15:53,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 361 flow [2024-06-28 03:15:53,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 340 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 03:15:53,619 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 247 flow [2024-06-28 03:15:53,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-06-28 03:15:53,619 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 27 predicate places. [2024-06-28 03:15:53,620 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 247 flow [2024-06-28 03:15:53,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:53,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:53,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:53,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:15:53,620 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:53,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:53,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1843064099, now seen corresponding path program 1 times [2024-06-28 03:15:53,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:53,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372627945] [2024-06-28 03:15:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:53,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:54,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:54,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372627945] [2024-06-28 03:15:54,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372627945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:54,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:54,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:54,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233048101] [2024-06-28 03:15:54,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:54,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:54,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:54,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:54,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:54,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:15:54,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 247 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:54,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:54,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:15:54,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:54,405 INFO L124 PetriNetUnfolderBase]: 253/463 cut-off events. [2024-06-28 03:15:54,406 INFO L125 PetriNetUnfolderBase]: For 3391/3391 co-relation queries the response was YES. [2024-06-28 03:15:54,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1870 conditions, 463 events. 253/463 cut-off events. For 3391/3391 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1708 event pairs, 61 based on Foata normal form. 1/464 useless extension candidates. Maximal degree in co-relation 1843. Up to 396 conditions per place. [2024-06-28 03:15:54,409 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 44 selfloop transitions, 16 changer transitions 0/64 dead transitions. [2024-06-28 03:15:54,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 443 flow [2024-06-28 03:15:54,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:15:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:15:54,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-28 03:15:54,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-06-28 03:15:54,410 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 247 flow. Second operand 7 states and 96 transitions. [2024-06-28 03:15:54,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 443 flow [2024-06-28 03:15:54,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 420 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:15:54,413 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 285 flow [2024-06-28 03:15:54,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=285, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-06-28 03:15:54,414 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2024-06-28 03:15:54,414 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 285 flow [2024-06-28 03:15:54,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:54,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:54,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:54,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:15:54,415 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:54,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:54,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1843243589, now seen corresponding path program 2 times [2024-06-28 03:15:54,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:54,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112580467] [2024-06-28 03:15:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:54,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:54,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:54,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112580467] [2024-06-28 03:15:54,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112580467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:54,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:54,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:54,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930579428] [2024-06-28 03:15:54,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:54,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:54,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:54,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:54,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:55,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:15:55,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 285 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:55,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:55,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:15:55,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:55,225 INFO L124 PetriNetUnfolderBase]: 256/468 cut-off events. [2024-06-28 03:15:55,225 INFO L125 PetriNetUnfolderBase]: For 3984/3984 co-relation queries the response was YES. [2024-06-28 03:15:55,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1976 conditions, 468 events. 256/468 cut-off events. For 3984/3984 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1723 event pairs, 61 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 1948. Up to 400 conditions per place. [2024-06-28 03:15:55,228 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 42 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2024-06-28 03:15:55,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 467 flow [2024-06-28 03:15:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:15:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:15:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-28 03:15:55,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069264069264069 [2024-06-28 03:15:55,229 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 285 flow. Second operand 7 states and 94 transitions. [2024-06-28 03:15:55,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 467 flow [2024-06-28 03:15:55,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 444 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:15:55,232 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 315 flow [2024-06-28 03:15:55,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-06-28 03:15:55,233 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2024-06-28 03:15:55,233 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 315 flow [2024-06-28 03:15:55,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:55,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:55,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:55,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:15:55,234 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:55,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:55,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1843243837, now seen corresponding path program 1 times [2024-06-28 03:15:55,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:55,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35543746] [2024-06-28 03:15:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:55,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:55,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:55,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35543746] [2024-06-28 03:15:55,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35543746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:55,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:55,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:55,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35267985] [2024-06-28 03:15:55,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:55,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:55,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:55,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:55,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:55,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:15:55,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 315 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:55,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:55,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:15:55,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:56,063 INFO L124 PetriNetUnfolderBase]: 263/477 cut-off events. [2024-06-28 03:15:56,063 INFO L125 PetriNetUnfolderBase]: For 4549/4549 co-relation queries the response was YES. [2024-06-28 03:15:56,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069 conditions, 477 events. 263/477 cut-off events. For 4549/4549 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1748 event pairs, 63 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 2039. Up to 421 conditions per place. [2024-06-28 03:15:56,066 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 45 selfloop transitions, 15 changer transitions 0/67 dead transitions. [2024-06-28 03:15:56,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 507 flow [2024-06-28 03:15:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:15:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:15:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-28 03:15:56,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069264069264069 [2024-06-28 03:15:56,067 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 315 flow. Second operand 7 states and 94 transitions. [2024-06-28 03:15:56,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 507 flow [2024-06-28 03:15:56,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 480 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:56,071 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 347 flow [2024-06-28 03:15:56,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=347, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-06-28 03:15:56,072 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2024-06-28 03:15:56,072 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 347 flow [2024-06-28 03:15:56,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:56,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:56,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:56,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:15:56,073 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:56,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:56,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1635811783, now seen corresponding path program 2 times [2024-06-28 03:15:56,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:56,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135048623] [2024-06-28 03:15:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:56,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:56,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:56,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135048623] [2024-06-28 03:15:56,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135048623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:56,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:56,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:56,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182626336] [2024-06-28 03:15:56,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:56,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:56,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:56,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:56,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:56,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:15:56,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 347 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:56,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:56,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:15:56,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:56,912 INFO L124 PetriNetUnfolderBase]: 266/482 cut-off events. [2024-06-28 03:15:56,912 INFO L125 PetriNetUnfolderBase]: For 5278/5278 co-relation queries the response was YES. [2024-06-28 03:15:56,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2178 conditions, 482 events. 266/482 cut-off events. For 5278/5278 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1762 event pairs, 61 based on Foata normal form. 1/483 useless extension candidates. Maximal degree in co-relation 2147. Up to 447 conditions per place. [2024-06-28 03:15:56,915 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 48 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2024-06-28 03:15:56,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 65 transitions, 493 flow [2024-06-28 03:15:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:15:56,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:15:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-28 03:15:56,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722943722943723 [2024-06-28 03:15:56,916 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 347 flow. Second operand 7 states and 86 transitions. [2024-06-28 03:15:56,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 65 transitions, 493 flow [2024-06-28 03:15:56,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 477 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 03:15:56,921 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 374 flow [2024-06-28 03:15:56,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=374, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-06-28 03:15:56,922 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2024-06-28 03:15:56,922 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 374 flow [2024-06-28 03:15:56,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:56,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:56,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:56,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:15:56,923 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:56,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:56,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2077040365, now seen corresponding path program 3 times [2024-06-28 03:15:56,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:56,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267199846] [2024-06-28 03:15:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:56,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:57,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:57,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:57,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267199846] [2024-06-28 03:15:57,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267199846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:57,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:57,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:57,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274668871] [2024-06-28 03:15:57,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:57,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:57,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:57,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:57,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:57,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:15:57,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 374 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:57,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:57,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:15:57,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:57,759 INFO L124 PetriNetUnfolderBase]: 262/477 cut-off events. [2024-06-28 03:15:57,759 INFO L125 PetriNetUnfolderBase]: For 6059/6059 co-relation queries the response was YES. [2024-06-28 03:15:57,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2229 conditions, 477 events. 262/477 cut-off events. For 6059/6059 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1752 event pairs, 59 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 2196. Up to 433 conditions per place. [2024-06-28 03:15:57,762 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 48 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2024-06-28 03:15:57,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 506 flow [2024-06-28 03:15:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:15:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:15:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-28 03:15:57,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722943722943723 [2024-06-28 03:15:57,763 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 374 flow. Second operand 7 states and 86 transitions. [2024-06-28 03:15:57,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 506 flow [2024-06-28 03:15:57,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 481 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:15:57,768 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 374 flow [2024-06-28 03:15:57,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=374, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-28 03:15:57,768 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-28 03:15:57,768 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 374 flow [2024-06-28 03:15:57,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:57,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:57,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:57,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:15:57,771 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:57,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:57,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2079419197, now seen corresponding path program 3 times [2024-06-28 03:15:57,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:57,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797260181] [2024-06-28 03:15:57,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:57,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:58,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:58,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797260181] [2024-06-28 03:15:58,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797260181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:58,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:58,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:58,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145603187] [2024-06-28 03:15:58,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:58,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:58,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:58,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:58,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:15:58,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 374 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:58,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:58,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:15:58,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:58,572 INFO L124 PetriNetUnfolderBase]: 262/476 cut-off events. [2024-06-28 03:15:58,573 INFO L125 PetriNetUnfolderBase]: For 6566/6566 co-relation queries the response was YES. [2024-06-28 03:15:58,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2246 conditions, 476 events. 262/476 cut-off events. For 6566/6566 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1745 event pairs, 61 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 2212. Up to 436 conditions per place. [2024-06-28 03:15:58,576 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 45 selfloop transitions, 13 changer transitions 0/65 dead transitions. [2024-06-28 03:15:58,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 65 transitions, 506 flow [2024-06-28 03:15:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:15:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:15:58,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 03:15:58,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 03:15:58,577 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 374 flow. Second operand 7 states and 88 transitions. [2024-06-28 03:15:58,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 65 transitions, 506 flow [2024-06-28 03:15:58,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 468 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:15:58,581 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 367 flow [2024-06-28 03:15:58,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-28 03:15:58,582 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-28 03:15:58,582 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 367 flow [2024-06-28 03:15:58,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:58,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:58,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:58,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:15:58,583 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:58,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:58,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1300263094, now seen corresponding path program 1 times [2024-06-28 03:15:58,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:58,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625821223] [2024-06-28 03:15:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:58,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:59,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:59,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625821223] [2024-06-28 03:15:59,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625821223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:59,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:59,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:59,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315404690] [2024-06-28 03:15:59,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:59,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:59,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:59,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:59,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:59,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:15:59,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 367 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:59,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:59,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:15:59,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:59,452 INFO L124 PetriNetUnfolderBase]: 263/479 cut-off events. [2024-06-28 03:15:59,453 INFO L125 PetriNetUnfolderBase]: For 7521/7521 co-relation queries the response was YES. [2024-06-28 03:15:59,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2308 conditions, 479 events. 263/479 cut-off events. For 7521/7521 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1772 event pairs, 59 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2273. Up to 389 conditions per place. [2024-06-28 03:15:59,456 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 50 selfloop transitions, 23 changer transitions 0/80 dead transitions. [2024-06-28 03:15:59,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 615 flow [2024-06-28 03:15:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-28 03:15:59,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:15:59,457 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 367 flow. Second operand 8 states and 110 transitions. [2024-06-28 03:15:59,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 615 flow [2024-06-28 03:15:59,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 574 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:15:59,463 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 405 flow [2024-06-28 03:15:59,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=405, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-06-28 03:15:59,464 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-28 03:15:59,464 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 405 flow [2024-06-28 03:15:59,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:59,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:59,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:59,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:15:59,465 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:15:59,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:59,465 INFO L85 PathProgramCache]: Analyzing trace with hash 757412822, now seen corresponding path program 2 times [2024-06-28 03:15:59,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:59,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547260910] [2024-06-28 03:15:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:59,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:00,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:00,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547260910] [2024-06-28 03:16:00,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547260910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:00,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:00,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:00,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600905086] [2024-06-28 03:16:00,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:00,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:00,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:00,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:00,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:00,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:00,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 405 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:00,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:00,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:00,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:00,360 INFO L124 PetriNetUnfolderBase]: 266/484 cut-off events. [2024-06-28 03:16:00,360 INFO L125 PetriNetUnfolderBase]: For 8431/8431 co-relation queries the response was YES. [2024-06-28 03:16:00,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 484 events. 266/484 cut-off events. For 8431/8431 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1796 event pairs, 59 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 2391. Up to 393 conditions per place. [2024-06-28 03:16:00,363 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 49 selfloop transitions, 23 changer transitions 0/79 dead transitions. [2024-06-28 03:16:00,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 637 flow [2024-06-28 03:16:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-28 03:16:00,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:16:00,365 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 405 flow. Second operand 8 states and 108 transitions. [2024-06-28 03:16:00,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 637 flow [2024-06-28 03:16:00,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 79 transitions, 596 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:00,372 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 431 flow [2024-06-28 03:16:00,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=431, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2024-06-28 03:16:00,372 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 48 predicate places. [2024-06-28 03:16:00,372 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 431 flow [2024-06-28 03:16:00,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:00,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:00,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:00,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:16:00,373 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:00,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:00,373 INFO L85 PathProgramCache]: Analyzing trace with hash 757413039, now seen corresponding path program 1 times [2024-06-28 03:16:00,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:00,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311175816] [2024-06-28 03:16:00,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:00,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:00,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:00,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311175816] [2024-06-28 03:16:00,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311175816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:00,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:00,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:00,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7102888] [2024-06-28 03:16:00,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:00,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:00,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:00,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:00,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:01,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:01,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 431 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:01,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:01,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:01,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:01,220 INFO L124 PetriNetUnfolderBase]: 287/507 cut-off events. [2024-06-28 03:16:01,220 INFO L125 PetriNetUnfolderBase]: For 9200/9200 co-relation queries the response was YES. [2024-06-28 03:16:01,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2574 conditions, 507 events. 287/507 cut-off events. For 9200/9200 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1833 event pairs, 61 based on Foata normal form. 1/508 useless extension candidates. Maximal degree in co-relation 2536. Up to 436 conditions per place. [2024-06-28 03:16:01,223 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 56 selfloop transitions, 25 changer transitions 0/83 dead transitions. [2024-06-28 03:16:01,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 691 flow [2024-06-28 03:16:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:01,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 03:16:01,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:16:01,225 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 431 flow. Second operand 8 states and 102 transitions. [2024-06-28 03:16:01,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 691 flow [2024-06-28 03:16:01,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 654 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:01,231 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 477 flow [2024-06-28 03:16:01,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-06-28 03:16:01,232 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2024-06-28 03:16:01,232 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 477 flow [2024-06-28 03:16:01,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:01,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:01,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:01,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:16:01,232 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:01,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:01,233 INFO L85 PathProgramCache]: Analyzing trace with hash 762984948, now seen corresponding path program 1 times [2024-06-28 03:16:01,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:01,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32088655] [2024-06-28 03:16:01,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:01,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:01,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:01,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:01,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32088655] [2024-06-28 03:16:01,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32088655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:01,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:01,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:01,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235669674] [2024-06-28 03:16:01,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:01,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:01,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:01,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:01,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:01,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:01,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 477 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:01,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:01,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:01,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:02,118 INFO L124 PetriNetUnfolderBase]: 290/522 cut-off events. [2024-06-28 03:16:02,118 INFO L125 PetriNetUnfolderBase]: For 11037/11037 co-relation queries the response was YES. [2024-06-28 03:16:02,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2726 conditions, 522 events. 290/522 cut-off events. For 11037/11037 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1957 event pairs, 64 based on Foata normal form. 3/525 useless extension candidates. Maximal degree in co-relation 2687. Up to 433 conditions per place. [2024-06-28 03:16:02,123 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 61 selfloop transitions, 20 changer transitions 0/90 dead transitions. [2024-06-28 03:16:02,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 745 flow [2024-06-28 03:16:02,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:02,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-28 03:16:02,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:16:02,125 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 477 flow. Second operand 8 states and 110 transitions. [2024-06-28 03:16:02,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 745 flow [2024-06-28 03:16:02,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 90 transitions, 713 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:02,136 INFO L231 Difference]: Finished difference. Result has 88 places, 74 transitions, 534 flow [2024-06-28 03:16:02,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=534, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2024-06-28 03:16:02,136 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 56 predicate places. [2024-06-28 03:16:02,137 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 534 flow [2024-06-28 03:16:02,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:02,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:02,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:02,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:16:02,137 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:02,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:02,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1305984671, now seen corresponding path program 2 times [2024-06-28 03:16:02,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:02,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905489552] [2024-06-28 03:16:02,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:02,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:02,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:02,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905489552] [2024-06-28 03:16:02,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905489552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:02,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:02,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:02,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494137487] [2024-06-28 03:16:02,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:02,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:02,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:02,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:02,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:02,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:02,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 74 transitions, 534 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:02,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:02,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:02,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:02,999 INFO L124 PetriNetUnfolderBase]: 314/551 cut-off events. [2024-06-28 03:16:02,999 INFO L125 PetriNetUnfolderBase]: For 12003/12003 co-relation queries the response was YES. [2024-06-28 03:16:03,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 551 events. 314/551 cut-off events. For 12003/12003 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2040 event pairs, 63 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 3007. Up to 477 conditions per place. [2024-06-28 03:16:03,003 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 62 selfloop transitions, 27 changer transitions 0/91 dead transitions. [2024-06-28 03:16:03,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 854 flow [2024-06-28 03:16:03,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 03:16:03,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38257575757575757 [2024-06-28 03:16:03,005 INFO L175 Difference]: Start difference. First operand has 88 places, 74 transitions, 534 flow. Second operand 8 states and 101 transitions. [2024-06-28 03:16:03,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 854 flow [2024-06-28 03:16:03,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 838 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:03,013 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 605 flow [2024-06-28 03:16:03,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=605, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2024-06-28 03:16:03,014 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 61 predicate places. [2024-06-28 03:16:03,014 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 605 flow [2024-06-28 03:16:03,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:03,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:03,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:03,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:16:03,015 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:03,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:03,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1305977014, now seen corresponding path program 3 times [2024-06-28 03:16:03,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:03,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075906065] [2024-06-28 03:16:03,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:03,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:03,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:03,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075906065] [2024-06-28 03:16:03,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075906065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:03,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:03,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:03,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616610803] [2024-06-28 03:16:03,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:03,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:03,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:03,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:03,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:03,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:03,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 605 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:03,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:03,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:03,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:03,862 INFO L124 PetriNetUnfolderBase]: 300/539 cut-off events. [2024-06-28 03:16:03,862 INFO L125 PetriNetUnfolderBase]: For 13358/13358 co-relation queries the response was YES. [2024-06-28 03:16:03,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3088 conditions, 539 events. 300/539 cut-off events. For 13358/13358 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2048 event pairs, 60 based on Foata normal form. 1/540 useless extension candidates. Maximal degree in co-relation 3043. Up to 440 conditions per place. [2024-06-28 03:16:03,866 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 57 selfloop transitions, 24 changer transitions 0/92 dead transitions. [2024-06-28 03:16:03,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 92 transitions, 853 flow [2024-06-28 03:16:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:03,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-28 03:16:03,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-28 03:16:03,867 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 605 flow. Second operand 8 states and 106 transitions. [2024-06-28 03:16:03,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 92 transitions, 853 flow [2024-06-28 03:16:03,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 92 transitions, 814 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:03,878 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 633 flow [2024-06-28 03:16:03,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=633, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-06-28 03:16:03,880 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2024-06-28 03:16:03,880 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 633 flow [2024-06-28 03:16:03,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:03,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:03,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:03,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:16:03,880 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:03,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:03,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1305977231, now seen corresponding path program 3 times [2024-06-28 03:16:03,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:03,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807648806] [2024-06-28 03:16:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:03,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:04,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:04,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807648806] [2024-06-28 03:16:04,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807648806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:04,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:04,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:04,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654886885] [2024-06-28 03:16:04,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:04,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:04,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:04,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:04,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:04,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:04,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 633 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:04,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:04,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:04,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:04,781 INFO L124 PetriNetUnfolderBase]: 315/553 cut-off events. [2024-06-28 03:16:04,781 INFO L125 PetriNetUnfolderBase]: For 14104/14104 co-relation queries the response was YES. [2024-06-28 03:16:04,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3184 conditions, 553 events. 315/553 cut-off events. For 14104/14104 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2049 event pairs, 63 based on Foata normal form. 1/554 useless extension candidates. Maximal degree in co-relation 3138. Up to 480 conditions per place. [2024-06-28 03:16:04,786 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 64 selfloop transitions, 26 changer transitions 0/92 dead transitions. [2024-06-28 03:16:04,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 92 transitions, 887 flow [2024-06-28 03:16:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:04,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 03:16:04,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38257575757575757 [2024-06-28 03:16:04,787 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 633 flow. Second operand 8 states and 101 transitions. [2024-06-28 03:16:04,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 92 transitions, 887 flow [2024-06-28 03:16:04,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 92 transitions, 844 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:04,797 INFO L231 Difference]: Finished difference. Result has 100 places, 80 transitions, 647 flow [2024-06-28 03:16:04,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=647, PETRI_PLACES=100, PETRI_TRANSITIONS=80} [2024-06-28 03:16:04,798 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 68 predicate places. [2024-06-28 03:16:04,798 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 80 transitions, 647 flow [2024-06-28 03:16:04,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:04,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:04,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:04,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:16:04,799 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:04,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:04,799 INFO L85 PathProgramCache]: Analyzing trace with hash 829442851, now seen corresponding path program 4 times [2024-06-28 03:16:04,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:04,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455339356] [2024-06-28 03:16:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:04,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:05,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:05,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455339356] [2024-06-28 03:16:05,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455339356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:05,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:05,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:05,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400755191] [2024-06-28 03:16:05,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:05,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:05,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:05,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:05,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:05,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:05,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 80 transitions, 647 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:05,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:05,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:05,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:05,742 INFO L124 PetriNetUnfolderBase]: 318/561 cut-off events. [2024-06-28 03:16:05,743 INFO L125 PetriNetUnfolderBase]: For 15559/15559 co-relation queries the response was YES. [2024-06-28 03:16:05,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3271 conditions, 561 events. 318/561 cut-off events. For 15559/15559 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2093 event pairs, 133 based on Foata normal form. 1/562 useless extension candidates. Maximal degree in co-relation 3224. Up to 538 conditions per place. [2024-06-28 03:16:05,753 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 75 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2024-06-28 03:16:05,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 91 transitions, 876 flow [2024-06-28 03:16:05,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:05,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:16:05,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-28 03:16:05,755 INFO L175 Difference]: Start difference. First operand has 100 places, 80 transitions, 647 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:16:05,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 91 transitions, 876 flow [2024-06-28 03:16:05,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 91 transitions, 812 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:05,768 INFO L231 Difference]: Finished difference. Result has 103 places, 84 transitions, 660 flow [2024-06-28 03:16:05,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=660, PETRI_PLACES=103, PETRI_TRANSITIONS=84} [2024-06-28 03:16:05,769 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 71 predicate places. [2024-06-28 03:16:05,769 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 84 transitions, 660 flow [2024-06-28 03:16:05,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:05,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:05,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:05,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:16:05,770 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:05,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash -36249586, now seen corresponding path program 2 times [2024-06-28 03:16:05,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:05,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460784773] [2024-06-28 03:16:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:05,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:06,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:06,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460784773] [2024-06-28 03:16:06,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460784773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:06,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:06,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:06,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023859472] [2024-06-28 03:16:06,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:06,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:06,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:06,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:06,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:06,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 84 transitions, 660 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:06,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:06,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:06,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:06,648 INFO L124 PetriNetUnfolderBase]: 310/555 cut-off events. [2024-06-28 03:16:06,648 INFO L125 PetriNetUnfolderBase]: For 17649/17652 co-relation queries the response was YES. [2024-06-28 03:16:06,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 555 events. 310/555 cut-off events. For 17649/17652 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2130 event pairs, 128 based on Foata normal form. 6/558 useless extension candidates. Maximal degree in co-relation 3196. Up to 478 conditions per place. [2024-06-28 03:16:06,652 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 68 selfloop transitions, 18 changer transitions 0/98 dead transitions. [2024-06-28 03:16:06,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 98 transitions, 928 flow [2024-06-28 03:16:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:06,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-28 03:16:06,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 03:16:06,653 INFO L175 Difference]: Start difference. First operand has 103 places, 84 transitions, 660 flow. Second operand 8 states and 105 transitions. [2024-06-28 03:16:06,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 98 transitions, 928 flow [2024-06-28 03:16:06,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 98 transitions, 899 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:06,666 INFO L231 Difference]: Finished difference. Result has 105 places, 86 transitions, 688 flow [2024-06-28 03:16:06,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=688, PETRI_PLACES=105, PETRI_TRANSITIONS=86} [2024-06-28 03:16:06,666 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2024-06-28 03:16:06,666 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 86 transitions, 688 flow [2024-06-28 03:16:06,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:06,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:06,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:06,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:16:06,667 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:06,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:06,667 INFO L85 PathProgramCache]: Analyzing trace with hash 47009718, now seen corresponding path program 3 times [2024-06-28 03:16:06,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:06,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432254653] [2024-06-28 03:16:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:06,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:07,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:07,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432254653] [2024-06-28 03:16:07,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432254653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:07,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:07,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:07,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280079732] [2024-06-28 03:16:07,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:07,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:07,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:07,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:07,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:07,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 86 transitions, 688 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:07,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:07,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:07,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:07,545 INFO L124 PetriNetUnfolderBase]: 319/570 cut-off events. [2024-06-28 03:16:07,545 INFO L125 PetriNetUnfolderBase]: For 19179/19182 co-relation queries the response was YES. [2024-06-28 03:16:07,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 570 events. 319/570 cut-off events. For 19179/19182 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2195 event pairs, 128 based on Foata normal form. 6/573 useless extension candidates. Maximal degree in co-relation 3340. Up to 518 conditions per place. [2024-06-28 03:16:07,548 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 72 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2024-06-28 03:16:07,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 97 transitions, 900 flow [2024-06-28 03:16:07,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:07,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 03:16:07,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-28 03:16:07,549 INFO L175 Difference]: Start difference. First operand has 105 places, 86 transitions, 688 flow. Second operand 8 states and 98 transitions. [2024-06-28 03:16:07,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 97 transitions, 900 flow [2024-06-28 03:16:07,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 97 transitions, 847 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:07,563 INFO L231 Difference]: Finished difference. Result has 107 places, 88 transitions, 690 flow [2024-06-28 03:16:07,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=690, PETRI_PLACES=107, PETRI_TRANSITIONS=88} [2024-06-28 03:16:07,563 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2024-06-28 03:16:07,563 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 88 transitions, 690 flow [2024-06-28 03:16:07,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:07,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:07,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:07,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:16:07,564 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:07,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:07,564 INFO L85 PathProgramCache]: Analyzing trace with hash 961687895, now seen corresponding path program 5 times [2024-06-28 03:16:07,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:07,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395759306] [2024-06-28 03:16:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:07,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:08,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:08,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395759306] [2024-06-28 03:16:08,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395759306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:08,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:08,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:08,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186279967] [2024-06-28 03:16:08,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:08,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:08,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:08,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:08,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:08,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:08,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 88 transitions, 690 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:08,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:08,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:08,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:08,379 INFO L124 PetriNetUnfolderBase]: 339/596 cut-off events. [2024-06-28 03:16:08,379 INFO L125 PetriNetUnfolderBase]: For 19450/19450 co-relation queries the response was YES. [2024-06-28 03:16:08,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3555 conditions, 596 events. 339/596 cut-off events. For 19450/19450 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2243 event pairs, 133 based on Foata normal form. 1/597 useless extension candidates. Maximal degree in co-relation 3505. Up to 557 conditions per place. [2024-06-28 03:16:08,382 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 75 selfloop transitions, 21 changer transitions 0/98 dead transitions. [2024-06-28 03:16:08,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 98 transitions, 974 flow [2024-06-28 03:16:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:08,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 03:16:08,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-28 03:16:08,382 INFO L175 Difference]: Start difference. First operand has 107 places, 88 transitions, 690 flow. Second operand 8 states and 93 transitions. [2024-06-28 03:16:08,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 98 transitions, 974 flow [2024-06-28 03:16:08,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 98 transitions, 941 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:08,397 INFO L231 Difference]: Finished difference. Result has 109 places, 90 transitions, 724 flow [2024-06-28 03:16:08,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=109, PETRI_TRANSITIONS=90} [2024-06-28 03:16:08,398 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 77 predicate places. [2024-06-28 03:16:08,398 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 90 transitions, 724 flow [2024-06-28 03:16:08,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:08,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:08,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:08,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:16:08,398 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:08,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:08,399 INFO L85 PathProgramCache]: Analyzing trace with hash 37478582, now seen corresponding path program 4 times [2024-06-28 03:16:08,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:08,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126934233] [2024-06-28 03:16:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:08,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:08,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:08,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126934233] [2024-06-28 03:16:08,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126934233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:08,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:08,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:08,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607023665] [2024-06-28 03:16:08,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:08,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:08,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:08,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:09,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:09,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 90 transitions, 724 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:09,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:09,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:09,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:09,265 INFO L124 PetriNetUnfolderBase]: 319/575 cut-off events. [2024-06-28 03:16:09,265 INFO L125 PetriNetUnfolderBase]: For 20644/20644 co-relation queries the response was YES. [2024-06-28 03:16:09,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3490 conditions, 575 events. 319/575 cut-off events. For 20644/20644 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2206 event pairs, 124 based on Foata normal form. 1/576 useless extension candidates. Maximal degree in co-relation 3439. Up to 516 conditions per place. [2024-06-28 03:16:09,267 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 71 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2024-06-28 03:16:09,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 97 transitions, 908 flow [2024-06-28 03:16:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:09,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:16:09,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:16:09,268 INFO L175 Difference]: Start difference. First operand has 109 places, 90 transitions, 724 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:16:09,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 97 transitions, 908 flow [2024-06-28 03:16:09,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 97 transitions, 830 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:09,282 INFO L231 Difference]: Finished difference. Result has 110 places, 90 transitions, 677 flow [2024-06-28 03:16:09,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=677, PETRI_PLACES=110, PETRI_TRANSITIONS=90} [2024-06-28 03:16:09,285 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 78 predicate places. [2024-06-28 03:16:09,285 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 90 transitions, 677 flow [2024-06-28 03:16:09,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:09,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:09,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:09,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:16:09,285 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:09,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:09,286 INFO L85 PathProgramCache]: Analyzing trace with hash 46683288, now seen corresponding path program 4 times [2024-06-28 03:16:09,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:09,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142285822] [2024-06-28 03:16:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:09,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:09,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:09,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142285822] [2024-06-28 03:16:09,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142285822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:09,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:09,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:09,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370598249] [2024-06-28 03:16:09,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:09,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:09,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:09,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:09,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:09,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:09,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 90 transitions, 677 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:09,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:09,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:09,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:10,202 INFO L124 PetriNetUnfolderBase]: 314/563 cut-off events. [2024-06-28 03:16:10,202 INFO L125 PetriNetUnfolderBase]: For 21601/21602 co-relation queries the response was YES. [2024-06-28 03:16:10,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3332 conditions, 563 events. 314/563 cut-off events. For 21601/21602 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2167 event pairs, 126 based on Foata normal form. 4/564 useless extension candidates. Maximal degree in co-relation 3280. Up to 497 conditions per place. [2024-06-28 03:16:10,205 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 72 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-28 03:16:10,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 101 transitions, 881 flow [2024-06-28 03:16:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:10,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 03:16:10,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:16:10,206 INFO L175 Difference]: Start difference. First operand has 110 places, 90 transitions, 677 flow. Second operand 8 states and 102 transitions. [2024-06-28 03:16:10,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 101 transitions, 881 flow [2024-06-28 03:16:10,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 101 transitions, 814 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:16:10,221 INFO L231 Difference]: Finished difference. Result has 108 places, 90 transitions, 647 flow [2024-06-28 03:16:10,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=647, PETRI_PLACES=108, PETRI_TRANSITIONS=90} [2024-06-28 03:16:10,222 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 76 predicate places. [2024-06-28 03:16:10,222 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 90 transitions, 647 flow [2024-06-28 03:16:10,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:10,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:10,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:10,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:16:10,222 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:10,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:10,223 INFO L85 PathProgramCache]: Analyzing trace with hash -36249865, now seen corresponding path program 6 times [2024-06-28 03:16:10,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:10,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525528469] [2024-06-28 03:16:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:10,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:10,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:10,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525528469] [2024-06-28 03:16:10,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525528469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:10,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:10,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:10,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002706544] [2024-06-28 03:16:10,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:10,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:10,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:10,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:10,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 90 transitions, 647 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:10,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:10,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:10,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:11,155 INFO L124 PetriNetUnfolderBase]: 329/581 cut-off events. [2024-06-28 03:16:11,155 INFO L125 PetriNetUnfolderBase]: For 21247/21247 co-relation queries the response was YES. [2024-06-28 03:16:11,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3435 conditions, 581 events. 329/581 cut-off events. For 21247/21247 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2189 event pairs, 131 based on Foata normal form. 1/582 useless extension candidates. Maximal degree in co-relation 3383. Up to 543 conditions per place. [2024-06-28 03:16:11,158 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 74 selfloop transitions, 21 changer transitions 0/97 dead transitions. [2024-06-28 03:16:11,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 97 transitions, 853 flow [2024-06-28 03:16:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 03:16:11,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-28 03:16:11,168 INFO L175 Difference]: Start difference. First operand has 108 places, 90 transitions, 647 flow. Second operand 9 states and 100 transitions. [2024-06-28 03:16:11,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 97 transitions, 853 flow [2024-06-28 03:16:11,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 97 transitions, 802 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:11,185 INFO L231 Difference]: Finished difference. Result has 110 places, 90 transitions, 643 flow [2024-06-28 03:16:11,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=643, PETRI_PLACES=110, PETRI_TRANSITIONS=90} [2024-06-28 03:16:11,186 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 78 predicate places. [2024-06-28 03:16:11,186 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 90 transitions, 643 flow [2024-06-28 03:16:11,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:11,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:11,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:11,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:16:11,186 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:11,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:11,187 INFO L85 PathProgramCache]: Analyzing trace with hash -534105144, now seen corresponding path program 1 times [2024-06-28 03:16:11,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:11,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485589171] [2024-06-28 03:16:11,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:11,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:11,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:11,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485589171] [2024-06-28 03:16:11,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485589171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:11,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:11,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:11,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252599858] [2024-06-28 03:16:11,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:11,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:11,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:11,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:11,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:11,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 90 transitions, 643 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:11,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:11,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:11,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:12,261 INFO L124 PetriNetUnfolderBase]: 334/604 cut-off events. [2024-06-28 03:16:12,261 INFO L125 PetriNetUnfolderBase]: For 22781/22783 co-relation queries the response was YES. [2024-06-28 03:16:12,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3534 conditions, 604 events. 334/604 cut-off events. For 22781/22783 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2405 event pairs, 57 based on Foata normal form. 3/607 useless extension candidates. Maximal degree in co-relation 3481. Up to 499 conditions per place. [2024-06-28 03:16:12,264 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 84 selfloop transitions, 23 changer transitions 0/120 dead transitions. [2024-06-28 03:16:12,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 120 transitions, 979 flow [2024-06-28 03:16:12,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 03:16:12,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-28 03:16:12,265 INFO L175 Difference]: Start difference. First operand has 110 places, 90 transitions, 643 flow. Second operand 10 states and 129 transitions. [2024-06-28 03:16:12,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 120 transitions, 979 flow [2024-06-28 03:16:12,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 120 transitions, 925 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:16:12,280 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 734 flow [2024-06-28 03:16:12,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=734, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-06-28 03:16:12,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2024-06-28 03:16:12,280 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 734 flow [2024-06-28 03:16:12,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:12,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:12,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:12,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:16:12,281 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:12,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:12,281 INFO L85 PathProgramCache]: Analyzing trace with hash 798130058, now seen corresponding path program 2 times [2024-06-28 03:16:12,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:12,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085346873] [2024-06-28 03:16:12,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:12,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:12,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:12,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085346873] [2024-06-28 03:16:12,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085346873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:12,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:12,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:12,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013255772] [2024-06-28 03:16:12,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:12,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:12,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:12,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:12,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:13,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:13,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 734 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:13,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:13,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:13,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:13,477 INFO L124 PetriNetUnfolderBase]: 353/637 cut-off events. [2024-06-28 03:16:13,477 INFO L125 PetriNetUnfolderBase]: For 24296/24296 co-relation queries the response was YES. [2024-06-28 03:16:13,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3842 conditions, 637 events. 353/637 cut-off events. For 24296/24296 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2575 event pairs, 61 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 3785. Up to 515 conditions per place. [2024-06-28 03:16:13,481 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 87 selfloop transitions, 29 changer transitions 0/129 dead transitions. [2024-06-28 03:16:13,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 129 transitions, 1110 flow [2024-06-28 03:16:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:13,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 03:16:13,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-28 03:16:13,482 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 734 flow. Second operand 10 states and 129 transitions. [2024-06-28 03:16:13,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 129 transitions, 1110 flow [2024-06-28 03:16:13,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 129 transitions, 1066 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:13,502 INFO L231 Difference]: Finished difference. Result has 125 places, 113 transitions, 886 flow [2024-06-28 03:16:13,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=886, PETRI_PLACES=125, PETRI_TRANSITIONS=113} [2024-06-28 03:16:13,503 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 93 predicate places. [2024-06-28 03:16:13,503 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 113 transitions, 886 flow [2024-06-28 03:16:13,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:13,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:13,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:13,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:16:13,503 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:13,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1071015424, now seen corresponding path program 3 times [2024-06-28 03:16:13,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:13,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302123556] [2024-06-28 03:16:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:13,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:14,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:14,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302123556] [2024-06-28 03:16:14,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302123556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:14,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:14,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:14,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261922435] [2024-06-28 03:16:14,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:14,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:14,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:14,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:14,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:14,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:14,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 113 transitions, 886 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:14,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:14,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:14,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:14,440 INFO L124 PetriNetUnfolderBase]: 364/655 cut-off events. [2024-06-28 03:16:14,440 INFO L125 PetriNetUnfolderBase]: For 26640/26641 co-relation queries the response was YES. [2024-06-28 03:16:14,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4132 conditions, 655 events. 364/655 cut-off events. For 26640/26641 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2692 event pairs, 92 based on Foata normal form. 1/655 useless extension candidates. Maximal degree in co-relation 4070. Up to 520 conditions per place. [2024-06-28 03:16:14,444 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 87 selfloop transitions, 41 changer transitions 0/141 dead transitions. [2024-06-28 03:16:14,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 141 transitions, 1344 flow [2024-06-28 03:16:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:16:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:16:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:16:14,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-28 03:16:14,449 INFO L175 Difference]: Start difference. First operand has 125 places, 113 transitions, 886 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:16:14,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 141 transitions, 1344 flow [2024-06-28 03:16:14,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 141 transitions, 1296 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:14,478 INFO L231 Difference]: Finished difference. Result has 134 places, 120 transitions, 1017 flow [2024-06-28 03:16:14,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1017, PETRI_PLACES=134, PETRI_TRANSITIONS=120} [2024-06-28 03:16:14,478 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 102 predicate places. [2024-06-28 03:16:14,478 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 120 transitions, 1017 flow [2024-06-28 03:16:14,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:14,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:14,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:14,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:16:14,479 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:14,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:14,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1340065950, now seen corresponding path program 4 times [2024-06-28 03:16:14,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:14,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797441019] [2024-06-28 03:16:14,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:14,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:15,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:15,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797441019] [2024-06-28 03:16:15,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797441019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:15,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:15,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:15,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080126024] [2024-06-28 03:16:15,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:15,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:15,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:15,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:15,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 120 transitions, 1017 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:15,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:15,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:15,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:15,500 INFO L124 PetriNetUnfolderBase]: 368/665 cut-off events. [2024-06-28 03:16:15,500 INFO L125 PetriNetUnfolderBase]: For 28353/28353 co-relation queries the response was YES. [2024-06-28 03:16:15,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4318 conditions, 665 events. 368/665 cut-off events. For 28353/28353 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2749 event pairs, 97 based on Foata normal form. 1/666 useless extension candidates. Maximal degree in co-relation 4254. Up to 538 conditions per place. [2024-06-28 03:16:15,504 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 94 selfloop transitions, 34 changer transitions 0/141 dead transitions. [2024-06-28 03:16:15,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 141 transitions, 1369 flow [2024-06-28 03:16:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 03:16:15,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-28 03:16:15,518 INFO L175 Difference]: Start difference. First operand has 134 places, 120 transitions, 1017 flow. Second operand 10 states and 129 transitions. [2024-06-28 03:16:15,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 141 transitions, 1369 flow [2024-06-28 03:16:15,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 141 transitions, 1294 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:15,547 INFO L231 Difference]: Finished difference. Result has 140 places, 124 transitions, 1093 flow [2024-06-28 03:16:15,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1093, PETRI_PLACES=140, PETRI_TRANSITIONS=124} [2024-06-28 03:16:15,547 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2024-06-28 03:16:15,548 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 124 transitions, 1093 flow [2024-06-28 03:16:15,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:15,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:15,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:15,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:16:15,548 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:15,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:15,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1070204328, now seen corresponding path program 5 times [2024-06-28 03:16:15,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:15,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522936475] [2024-06-28 03:16:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:15,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:16,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:16,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522936475] [2024-06-28 03:16:16,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522936475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:16,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:16,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:16,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209294321] [2024-06-28 03:16:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:16,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:16,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:16,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:16,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 124 transitions, 1093 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:16,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:16,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:16,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:16,559 INFO L124 PetriNetUnfolderBase]: 376/677 cut-off events. [2024-06-28 03:16:16,559 INFO L125 PetriNetUnfolderBase]: For 31548/31550 co-relation queries the response was YES. [2024-06-28 03:16:16,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4550 conditions, 677 events. 376/677 cut-off events. For 31548/31550 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2834 event pairs, 93 based on Foata normal form. 1/676 useless extension candidates. Maximal degree in co-relation 4482. Up to 483 conditions per place. [2024-06-28 03:16:16,564 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 83 selfloop transitions, 51 changer transitions 0/147 dead transitions. [2024-06-28 03:16:16,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 147 transitions, 1537 flow [2024-06-28 03:16:16,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:16,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 03:16:16,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-28 03:16:16,565 INFO L175 Difference]: Start difference. First operand has 140 places, 124 transitions, 1093 flow. Second operand 10 states and 134 transitions. [2024-06-28 03:16:16,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 147 transitions, 1537 flow [2024-06-28 03:16:16,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 147 transitions, 1479 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:16,598 INFO L231 Difference]: Finished difference. Result has 146 places, 130 transitions, 1219 flow [2024-06-28 03:16:16,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1219, PETRI_PLACES=146, PETRI_TRANSITIONS=130} [2024-06-28 03:16:16,599 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2024-06-28 03:16:16,599 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 130 transitions, 1219 flow [2024-06-28 03:16:16,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:16,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:16,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:16,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:16:16,599 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:16,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:16,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1070224974, now seen corresponding path program 1 times [2024-06-28 03:16:16,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:16,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615889941] [2024-06-28 03:16:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:16,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:17,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:17,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615889941] [2024-06-28 03:16:17,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615889941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:17,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:17,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:17,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117252572] [2024-06-28 03:16:17,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:17,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:17,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:17,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:17,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 130 transitions, 1219 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:17,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:17,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:17,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:17,549 INFO L124 PetriNetUnfolderBase]: 395/697 cut-off events. [2024-06-28 03:16:17,549 INFO L125 PetriNetUnfolderBase]: For 31886/31886 co-relation queries the response was YES. [2024-06-28 03:16:17,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4708 conditions, 697 events. 395/697 cut-off events. For 31886/31886 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2859 event pairs, 97 based on Foata normal form. 1/698 useless extension candidates. Maximal degree in co-relation 4638. Up to 537 conditions per place. [2024-06-28 03:16:17,553 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 98 selfloop transitions, 51 changer transitions 0/151 dead transitions. [2024-06-28 03:16:17,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 151 transitions, 1657 flow [2024-06-28 03:16:17,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 03:16:17,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-28 03:16:17,557 INFO L175 Difference]: Start difference. First operand has 146 places, 130 transitions, 1219 flow. Second operand 10 states and 126 transitions. [2024-06-28 03:16:17,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 151 transitions, 1657 flow [2024-06-28 03:16:17,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 151 transitions, 1591 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:17,599 INFO L231 Difference]: Finished difference. Result has 151 places, 134 transitions, 1288 flow [2024-06-28 03:16:17,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1288, PETRI_PLACES=151, PETRI_TRANSITIONS=134} [2024-06-28 03:16:17,599 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2024-06-28 03:16:17,599 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 134 transitions, 1288 flow [2024-06-28 03:16:17,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:17,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:17,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:17,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:16:17,600 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:17,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:17,600 INFO L85 PathProgramCache]: Analyzing trace with hash -106778526, now seen corresponding path program 2 times [2024-06-28 03:16:17,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:17,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13346526] [2024-06-28 03:16:17,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:17,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:18,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:18,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13346526] [2024-06-28 03:16:18,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13346526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:18,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:18,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:18,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290365060] [2024-06-28 03:16:18,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:18,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:18,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:18,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:18,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:18,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:18,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 134 transitions, 1288 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:18,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:18,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:18,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:18,620 INFO L124 PetriNetUnfolderBase]: 415/730 cut-off events. [2024-06-28 03:16:18,620 INFO L125 PetriNetUnfolderBase]: For 34128/34128 co-relation queries the response was YES. [2024-06-28 03:16:18,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 730 events. 415/730 cut-off events. For 34128/34128 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3021 event pairs, 99 based on Foata normal form. 1/731 useless extension candidates. Maximal degree in co-relation 4947. Up to 553 conditions per place. [2024-06-28 03:16:18,626 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 111 selfloop transitions, 50 changer transitions 0/163 dead transitions. [2024-06-28 03:16:18,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 163 transitions, 1898 flow [2024-06-28 03:16:18,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 03:16:18,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-28 03:16:18,627 INFO L175 Difference]: Start difference. First operand has 151 places, 134 transitions, 1288 flow. Second operand 10 states and 129 transitions. [2024-06-28 03:16:18,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 163 transitions, 1898 flow [2024-06-28 03:16:18,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 163 transitions, 1790 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:16:18,673 INFO L231 Difference]: Finished difference. Result has 155 places, 144 transitions, 1384 flow [2024-06-28 03:16:18,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1384, PETRI_PLACES=155, PETRI_TRANSITIONS=144} [2024-06-28 03:16:18,673 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 123 predicate places. [2024-06-28 03:16:18,673 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 144 transitions, 1384 flow [2024-06-28 03:16:18,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:18,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:18,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:18,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:16:18,674 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:18,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:18,674 INFO L85 PathProgramCache]: Analyzing trace with hash -106778712, now seen corresponding path program 6 times [2024-06-28 03:16:18,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:18,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687132248] [2024-06-28 03:16:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:18,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:19,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:19,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687132248] [2024-06-28 03:16:19,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687132248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:19,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:19,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:19,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829215073] [2024-06-28 03:16:19,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:19,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:19,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:19,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:19,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:19,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:19,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 144 transitions, 1384 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:19,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:19,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:19,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:19,737 INFO L124 PetriNetUnfolderBase]: 407/725 cut-off events. [2024-06-28 03:16:19,737 INFO L125 PetriNetUnfolderBase]: For 36910/36910 co-relation queries the response was YES. [2024-06-28 03:16:19,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5150 conditions, 725 events. 407/725 cut-off events. For 36910/36910 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3062 event pairs, 66 based on Foata normal form. 1/726 useless extension candidates. Maximal degree in co-relation 5076. Up to 511 conditions per place. [2024-06-28 03:16:19,741 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 95 selfloop transitions, 54 changer transitions 0/167 dead transitions. [2024-06-28 03:16:19,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 167 transitions, 1946 flow [2024-06-28 03:16:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 03:16:19,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-28 03:16:19,742 INFO L175 Difference]: Start difference. First operand has 155 places, 144 transitions, 1384 flow. Second operand 10 states and 137 transitions. [2024-06-28 03:16:19,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 167 transitions, 1946 flow [2024-06-28 03:16:19,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 167 transitions, 1869 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:19,790 INFO L231 Difference]: Finished difference. Result has 159 places, 150 transitions, 1488 flow [2024-06-28 03:16:19,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1488, PETRI_PLACES=159, PETRI_TRANSITIONS=150} [2024-06-28 03:16:19,791 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 127 predicate places. [2024-06-28 03:16:19,791 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 150 transitions, 1488 flow [2024-06-28 03:16:19,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:19,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:19,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:19,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:16:19,791 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:19,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash 470744034, now seen corresponding path program 3 times [2024-06-28 03:16:19,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:19,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576136356] [2024-06-28 03:16:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:19,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:20,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:20,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576136356] [2024-06-28 03:16:20,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576136356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:20,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:20,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:20,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953283915] [2024-06-28 03:16:20,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:20,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:20,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:20,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:20,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:20,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 150 transitions, 1488 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:20,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:20,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:20,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:20,777 INFO L124 PetriNetUnfolderBase]: 426/749 cut-off events. [2024-06-28 03:16:20,777 INFO L125 PetriNetUnfolderBase]: For 38779/38779 co-relation queries the response was YES. [2024-06-28 03:16:20,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5311 conditions, 749 events. 426/749 cut-off events. For 38779/38779 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3131 event pairs, 97 based on Foata normal form. 1/750 useless extension candidates. Maximal degree in co-relation 5238. Up to 570 conditions per place. [2024-06-28 03:16:20,784 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 113 selfloop transitions, 53 changer transitions 0/168 dead transitions. [2024-06-28 03:16:20,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 168 transitions, 2030 flow [2024-06-28 03:16:20,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:20,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 03:16:20,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-28 03:16:20,786 INFO L175 Difference]: Start difference. First operand has 159 places, 150 transitions, 1488 flow. Second operand 10 states and 127 transitions. [2024-06-28 03:16:20,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 168 transitions, 2030 flow [2024-06-28 03:16:20,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 168 transitions, 1947 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:20,835 INFO L231 Difference]: Finished difference. Result has 163 places, 152 transitions, 1530 flow [2024-06-28 03:16:20,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1530, PETRI_PLACES=163, PETRI_TRANSITIONS=152} [2024-06-28 03:16:20,836 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 131 predicate places. [2024-06-28 03:16:20,836 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 152 transitions, 1530 flow [2024-06-28 03:16:20,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:20,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:20,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:20,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:16:20,836 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:20,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash -102137082, now seen corresponding path program 7 times [2024-06-28 03:16:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:20,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649783753] [2024-06-28 03:16:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:20,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:21,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:21,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649783753] [2024-06-28 03:16:21,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649783753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:21,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:21,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:21,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049867257] [2024-06-28 03:16:21,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:21,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:21,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:21,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:21,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:21,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 152 transitions, 1530 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:21,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:21,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:21,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:21,885 INFO L124 PetriNetUnfolderBase]: 408/728 cut-off events. [2024-06-28 03:16:21,885 INFO L125 PetriNetUnfolderBase]: For 40255/40255 co-relation queries the response was YES. [2024-06-28 03:16:21,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5209 conditions, 728 events. 408/728 cut-off events. For 40255/40255 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3069 event pairs, 65 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 5136. Up to 512 conditions per place. [2024-06-28 03:16:21,890 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 91 selfloop transitions, 57 changer transitions 0/167 dead transitions. [2024-06-28 03:16:21,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 167 transitions, 1944 flow [2024-06-28 03:16:21,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:21,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 03:16:21,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-28 03:16:21,892 INFO L175 Difference]: Start difference. First operand has 163 places, 152 transitions, 1530 flow. Second operand 10 states and 133 transitions. [2024-06-28 03:16:21,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 167 transitions, 1944 flow [2024-06-28 03:16:21,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 167 transitions, 1842 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:21,942 INFO L231 Difference]: Finished difference. Result has 167 places, 152 transitions, 1547 flow [2024-06-28 03:16:21,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1547, PETRI_PLACES=167, PETRI_TRANSITIONS=152} [2024-06-28 03:16:21,943 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2024-06-28 03:16:21,943 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 152 transitions, 1547 flow [2024-06-28 03:16:21,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:21,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:21,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:21,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:16:21,944 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:21,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:21,944 INFO L85 PathProgramCache]: Analyzing trace with hash 451982214, now seen corresponding path program 4 times [2024-06-28 03:16:21,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:21,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872267608] [2024-06-28 03:16:21,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:21,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:22,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:22,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872267608] [2024-06-28 03:16:22,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872267608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:22,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:22,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:22,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529128220] [2024-06-28 03:16:22,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:22,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:22,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:22,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:22,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 152 transitions, 1547 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:22,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:22,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:22,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:23,009 INFO L124 PetriNetUnfolderBase]: 422/743 cut-off events. [2024-06-28 03:16:23,009 INFO L125 PetriNetUnfolderBase]: For 41221/41221 co-relation queries the response was YES. [2024-06-28 03:16:23,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5301 conditions, 743 events. 422/743 cut-off events. For 41221/41221 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3109 event pairs, 97 based on Foata normal form. 1/744 useless extension candidates. Maximal degree in co-relation 5227. Up to 565 conditions per place. [2024-06-28 03:16:23,014 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 110 selfloop transitions, 55 changer transitions 0/167 dead transitions. [2024-06-28 03:16:23,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 167 transitions, 1997 flow [2024-06-28 03:16:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:23,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 03:16:23,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:16:23,015 INFO L175 Difference]: Start difference. First operand has 167 places, 152 transitions, 1547 flow. Second operand 10 states and 125 transitions. [2024-06-28 03:16:23,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 167 transitions, 1997 flow [2024-06-28 03:16:23,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 167 transitions, 1891 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:23,063 INFO L231 Difference]: Finished difference. Result has 170 places, 152 transitions, 1556 flow [2024-06-28 03:16:23,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1556, PETRI_PLACES=170, PETRI_TRANSITIONS=152} [2024-06-28 03:16:23,064 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 138 predicate places. [2024-06-28 03:16:23,064 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 152 transitions, 1556 flow [2024-06-28 03:16:23,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:23,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:23,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:23,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:16:23,065 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:23,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:23,066 INFO L85 PathProgramCache]: Analyzing trace with hash 451982462, now seen corresponding path program 1 times [2024-06-28 03:16:23,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:23,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827777713] [2024-06-28 03:16:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:23,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:23,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:23,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827777713] [2024-06-28 03:16:23,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827777713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:23,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:23,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:23,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323523286] [2024-06-28 03:16:23,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:23,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:23,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:23,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:23,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:23,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:23,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 152 transitions, 1556 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:23,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:23,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:23,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:24,077 INFO L124 PetriNetUnfolderBase]: 431/758 cut-off events. [2024-06-28 03:16:24,078 INFO L125 PetriNetUnfolderBase]: For 44893/44893 co-relation queries the response was YES. [2024-06-28 03:16:24,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5401 conditions, 758 events. 431/758 cut-off events. For 44893/44893 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3199 event pairs, 106 based on Foata normal form. 3/761 useless extension candidates. Maximal degree in co-relation 5326. Up to 612 conditions per place. [2024-06-28 03:16:24,083 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 134 selfloop transitions, 42 changer transitions 0/178 dead transitions. [2024-06-28 03:16:24,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 178 transitions, 2086 flow [2024-06-28 03:16:24,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 03:16:24,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-28 03:16:24,084 INFO L175 Difference]: Start difference. First operand has 170 places, 152 transitions, 1556 flow. Second operand 10 states and 126 transitions. [2024-06-28 03:16:24,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 178 transitions, 2086 flow [2024-06-28 03:16:24,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 178 transitions, 1993 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:24,137 INFO L231 Difference]: Finished difference. Result has 175 places, 161 transitions, 1660 flow [2024-06-28 03:16:24,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1660, PETRI_PLACES=175, PETRI_TRANSITIONS=161} [2024-06-28 03:16:24,138 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 143 predicate places. [2024-06-28 03:16:24,138 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 161 transitions, 1660 flow [2024-06-28 03:16:24,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:24,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:24,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:24,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:16:24,138 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:24,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:24,139 INFO L85 PathProgramCache]: Analyzing trace with hash 798250214, now seen corresponding path program 5 times [2024-06-28 03:16:24,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:24,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655467647] [2024-06-28 03:16:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:24,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:24,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:24,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655467647] [2024-06-28 03:16:24,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655467647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:24,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:24,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:24,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375149368] [2024-06-28 03:16:24,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:24,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:24,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:24,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:24,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:24,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:24,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 161 transitions, 1660 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:24,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:24,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:24,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:25,238 INFO L124 PetriNetUnfolderBase]: 469/818 cut-off events. [2024-06-28 03:16:25,238 INFO L125 PetriNetUnfolderBase]: For 45966/45966 co-relation queries the response was YES. [2024-06-28 03:16:25,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 818 events. 469/818 cut-off events. For 45966/45966 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3483 event pairs, 74 based on Foata normal form. 1/819 useless extension candidates. Maximal degree in co-relation 5904. Up to 604 conditions per place. [2024-06-28 03:16:25,243 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 136 selfloop transitions, 63 changer transitions 0/201 dead transitions. [2024-06-28 03:16:25,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 201 transitions, 2493 flow [2024-06-28 03:16:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:25,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:25,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 03:16:25,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-28 03:16:25,244 INFO L175 Difference]: Start difference. First operand has 175 places, 161 transitions, 1660 flow. Second operand 10 states and 129 transitions. [2024-06-28 03:16:25,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 201 transitions, 2493 flow [2024-06-28 03:16:25,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 201 transitions, 2328 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-28 03:16:25,306 INFO L231 Difference]: Finished difference. Result has 175 places, 180 transitions, 1853 flow [2024-06-28 03:16:25,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1853, PETRI_PLACES=175, PETRI_TRANSITIONS=180} [2024-06-28 03:16:25,306 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 143 predicate places. [2024-06-28 03:16:25,306 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 180 transitions, 1853 flow [2024-06-28 03:16:25,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:25,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:25,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:25,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:16:25,307 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:25,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1255035496, now seen corresponding path program 8 times [2024-06-28 03:16:25,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:25,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163967946] [2024-06-28 03:16:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:25,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:25,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:25,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163967946] [2024-06-28 03:16:25,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163967946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:25,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:25,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:25,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493703858] [2024-06-28 03:16:25,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:25,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:25,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:25,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:25,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:26,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:26,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 180 transitions, 1853 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:26,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:26,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:26,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:26,516 INFO L124 PetriNetUnfolderBase]: 460/814 cut-off events. [2024-06-28 03:16:26,516 INFO L125 PetriNetUnfolderBase]: For 49358/49358 co-relation queries the response was YES. [2024-06-28 03:16:26,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6119 conditions, 814 events. 460/814 cut-off events. For 49358/49358 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3550 event pairs, 74 based on Foata normal form. 1/815 useless extension candidates. Maximal degree in co-relation 6039. Up to 566 conditions per place. [2024-06-28 03:16:26,522 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 116 selfloop transitions, 64 changer transitions 0/205 dead transitions. [2024-06-28 03:16:26,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 205 transitions, 2533 flow [2024-06-28 03:16:26,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:26,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 03:16:26,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-28 03:16:26,523 INFO L175 Difference]: Start difference. First operand has 175 places, 180 transitions, 1853 flow. Second operand 10 states and 137 transitions. [2024-06-28 03:16:26,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 205 transitions, 2533 flow [2024-06-28 03:16:26,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 205 transitions, 2472 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:26,613 INFO L231 Difference]: Finished difference. Result has 181 places, 189 transitions, 2027 flow [2024-06-28 03:16:26,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2027, PETRI_PLACES=181, PETRI_TRANSITIONS=189} [2024-06-28 03:16:26,614 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2024-06-28 03:16:26,614 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 189 transitions, 2027 flow [2024-06-28 03:16:26,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:26,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:26,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:26,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:16:26,614 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:26,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:26,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1091353280, now seen corresponding path program 9 times [2024-06-28 03:16:26,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:26,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888740959] [2024-06-28 03:16:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:26,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:27,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:27,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888740959] [2024-06-28 03:16:27,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888740959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:27,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:27,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:27,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863201795] [2024-06-28 03:16:27,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:27,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:27,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:27,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:27,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:27,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:27,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 189 transitions, 2027 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:27,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:27,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:27,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:27,772 INFO L124 PetriNetUnfolderBase]: 463/819 cut-off events. [2024-06-28 03:16:27,772 INFO L125 PetriNetUnfolderBase]: For 51922/51922 co-relation queries the response was YES. [2024-06-28 03:16:27,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6233 conditions, 819 events. 463/819 cut-off events. For 51922/51922 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3567 event pairs, 74 based on Foata normal form. 1/820 useless extension candidates. Maximal degree in co-relation 6153. Up to 570 conditions per place. [2024-06-28 03:16:27,777 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 116 selfloop transitions, 65 changer transitions 0/206 dead transitions. [2024-06-28 03:16:27,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 206 transitions, 2639 flow [2024-06-28 03:16:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 03:16:27,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-28 03:16:27,778 INFO L175 Difference]: Start difference. First operand has 181 places, 189 transitions, 2027 flow. Second operand 10 states and 137 transitions. [2024-06-28 03:16:27,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 206 transitions, 2639 flow [2024-06-28 03:16:27,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 206 transitions, 2553 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:27,850 INFO L231 Difference]: Finished difference. Result has 186 places, 191 transitions, 2108 flow [2024-06-28 03:16:27,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2108, PETRI_PLACES=186, PETRI_TRANSITIONS=191} [2024-06-28 03:16:27,850 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2024-06-28 03:16:27,850 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 191 transitions, 2108 flow [2024-06-28 03:16:27,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:27,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:27,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:27,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:16:27,851 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:27,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:27,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1091359976, now seen corresponding path program 6 times [2024-06-28 03:16:27,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:27,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358173007] [2024-06-28 03:16:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:27,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:28,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:28,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358173007] [2024-06-28 03:16:28,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358173007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:28,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:28,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:28,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846786849] [2024-06-28 03:16:28,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:28,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:28,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:28,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:28,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:28,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:28,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 191 transitions, 2108 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:28,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:28,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:28,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:28,993 INFO L124 PetriNetUnfolderBase]: 488/849 cut-off events. [2024-06-28 03:16:28,993 INFO L125 PetriNetUnfolderBase]: For 55240/55240 co-relation queries the response was YES. [2024-06-28 03:16:28,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6477 conditions, 849 events. 488/849 cut-off events. For 55240/55240 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3670 event pairs, 74 based on Foata normal form. 1/850 useless extension candidates. Maximal degree in co-relation 6397. Up to 632 conditions per place. [2024-06-28 03:16:28,998 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 144 selfloop transitions, 65 changer transitions 0/211 dead transitions. [2024-06-28 03:16:28,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 211 transitions, 2874 flow [2024-06-28 03:16:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:29,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:29,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:16:29,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 03:16:29,001 INFO L175 Difference]: Start difference. First operand has 186 places, 191 transitions, 2108 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:16:29,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 211 transitions, 2874 flow [2024-06-28 03:16:29,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 211 transitions, 2752 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:29,090 INFO L231 Difference]: Finished difference. Result has 191 places, 195 transitions, 2153 flow [2024-06-28 03:16:29,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2153, PETRI_PLACES=191, PETRI_TRANSITIONS=195} [2024-06-28 03:16:29,091 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 159 predicate places. [2024-06-28 03:16:29,091 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 195 transitions, 2153 flow [2024-06-28 03:16:29,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:29,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:29,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:29,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:16:29,091 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:29,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:29,091 INFO L85 PathProgramCache]: Analyzing trace with hash 802891844, now seen corresponding path program 7 times [2024-06-28 03:16:29,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:29,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954710815] [2024-06-28 03:16:29,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:29,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:29,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:29,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954710815] [2024-06-28 03:16:29,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954710815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:29,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:29,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:29,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238962894] [2024-06-28 03:16:29,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:29,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:29,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:29,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:29,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:29,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:29,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 195 transitions, 2153 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:29,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:29,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:29,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:30,203 INFO L124 PetriNetUnfolderBase]: 486/846 cut-off events. [2024-06-28 03:16:30,203 INFO L125 PetriNetUnfolderBase]: For 56315/56315 co-relation queries the response was YES. [2024-06-28 03:16:30,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6469 conditions, 846 events. 486/846 cut-off events. For 56315/56315 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3662 event pairs, 74 based on Foata normal form. 1/847 useless extension candidates. Maximal degree in co-relation 6388. Up to 630 conditions per place. [2024-06-28 03:16:30,209 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 144 selfloop transitions, 64 changer transitions 0/210 dead transitions. [2024-06-28 03:16:30,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 210 transitions, 2795 flow [2024-06-28 03:16:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:16:30,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 03:16:30,210 INFO L175 Difference]: Start difference. First operand has 191 places, 195 transitions, 2153 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:16:30,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 210 transitions, 2795 flow [2024-06-28 03:16:30,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 210 transitions, 2687 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:30,303 INFO L231 Difference]: Finished difference. Result has 196 places, 195 transitions, 2178 flow [2024-06-28 03:16:30,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2178, PETRI_PLACES=196, PETRI_TRANSITIONS=195} [2024-06-28 03:16:30,304 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 164 predicate places. [2024-06-28 03:16:30,304 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 195 transitions, 2178 flow [2024-06-28 03:16:30,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:30,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:30,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:30,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:16:30,304 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:30,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash 802898602, now seen corresponding path program 2 times [2024-06-28 03:16:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:30,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423745778] [2024-06-28 03:16:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:30,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:30,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:30,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423745778] [2024-06-28 03:16:30,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423745778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:30,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:30,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:30,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429211145] [2024-06-28 03:16:30,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:30,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:30,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:30,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:30,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:30,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:30,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 195 transitions, 2178 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:30,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:30,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:30,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:31,434 INFO L124 PetriNetUnfolderBase]: 519/903 cut-off events. [2024-06-28 03:16:31,434 INFO L125 PetriNetUnfolderBase]: For 64776/64776 co-relation queries the response was YES. [2024-06-28 03:16:31,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6904 conditions, 903 events. 519/903 cut-off events. For 64776/64776 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3996 event pairs, 115 based on Foata normal form. 3/906 useless extension candidates. Maximal degree in co-relation 6822. Up to 700 conditions per place. [2024-06-28 03:16:31,441 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 175 selfloop transitions, 49 changer transitions 0/226 dead transitions. [2024-06-28 03:16:31,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 226 transitions, 2964 flow [2024-06-28 03:16:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:31,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 03:16:31,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-28 03:16:31,442 INFO L175 Difference]: Start difference. First operand has 196 places, 195 transitions, 2178 flow. Second operand 10 states and 134 transitions. [2024-06-28 03:16:31,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 226 transitions, 2964 flow [2024-06-28 03:16:31,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 226 transitions, 2847 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:31,529 INFO L231 Difference]: Finished difference. Result has 201 places, 206 transitions, 2301 flow [2024-06-28 03:16:31,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2301, PETRI_PLACES=201, PETRI_TRANSITIONS=206} [2024-06-28 03:16:31,529 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 169 predicate places. [2024-06-28 03:16:31,529 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 206 transitions, 2301 flow [2024-06-28 03:16:31,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:31,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:31,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:31,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:16:31,530 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:31,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:31,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1843520400, now seen corresponding path program 3 times [2024-06-28 03:16:31,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:31,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132791715] [2024-06-28 03:16:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:31,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:32,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:32,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132791715] [2024-06-28 03:16:32,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132791715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:32,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:32,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:32,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082858609] [2024-06-28 03:16:32,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:32,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:32,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:32,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:32,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:32,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:32,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 206 transitions, 2301 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:32,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:32,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:32,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:32,726 INFO L124 PetriNetUnfolderBase]: 543/943 cut-off events. [2024-06-28 03:16:32,726 INFO L125 PetriNetUnfolderBase]: For 71443/71443 co-relation queries the response was YES. [2024-06-28 03:16:32,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7418 conditions, 943 events. 543/943 cut-off events. For 71443/71443 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4187 event pairs, 109 based on Foata normal form. 3/946 useless extension candidates. Maximal degree in co-relation 7333. Up to 720 conditions per place. [2024-06-28 03:16:32,733 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 173 selfloop transitions, 58 changer transitions 0/233 dead transitions. [2024-06-28 03:16:32,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 233 transitions, 3191 flow [2024-06-28 03:16:32,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:16:32,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:16:32,734 INFO L175 Difference]: Start difference. First operand has 201 places, 206 transitions, 2301 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:16:32,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 233 transitions, 3191 flow [2024-06-28 03:16:32,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 233 transitions, 3095 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:16:32,844 INFO L231 Difference]: Finished difference. Result has 203 places, 212 transitions, 2397 flow [2024-06-28 03:16:32,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2397, PETRI_PLACES=203, PETRI_TRANSITIONS=212} [2024-06-28 03:16:32,844 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2024-06-28 03:16:32,844 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 212 transitions, 2397 flow [2024-06-28 03:16:32,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:32,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:32,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:32,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:16:32,845 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:32,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:32,845 INFO L85 PathProgramCache]: Analyzing trace with hash 973248918, now seen corresponding path program 4 times [2024-06-28 03:16:32,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:32,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723438810] [2024-06-28 03:16:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:32,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:33,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:33,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723438810] [2024-06-28 03:16:33,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723438810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:33,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:33,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:33,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803400044] [2024-06-28 03:16:33,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:33,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:33,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:33,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:33,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:33,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 212 transitions, 2397 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:33,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:33,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:33,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:34,028 INFO L124 PetriNetUnfolderBase]: 537/934 cut-off events. [2024-06-28 03:16:34,028 INFO L125 PetriNetUnfolderBase]: For 70487/70487 co-relation queries the response was YES. [2024-06-28 03:16:34,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7329 conditions, 934 events. 537/934 cut-off events. For 70487/70487 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4155 event pairs, 107 based on Foata normal form. 3/937 useless extension candidates. Maximal degree in co-relation 7244. Up to 716 conditions per place. [2024-06-28 03:16:34,034 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 167 selfloop transitions, 61 changer transitions 0/230 dead transitions. [2024-06-28 03:16:34,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 230 transitions, 3106 flow [2024-06-28 03:16:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:34,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 03:16:34,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-28 03:16:34,035 INFO L175 Difference]: Start difference. First operand has 203 places, 212 transitions, 2397 flow. Second operand 10 states and 128 transitions. [2024-06-28 03:16:34,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 230 transitions, 3106 flow [2024-06-28 03:16:34,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 230 transitions, 3006 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:34,143 INFO L231 Difference]: Finished difference. Result has 209 places, 212 transitions, 2426 flow [2024-06-28 03:16:34,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2426, PETRI_PLACES=209, PETRI_TRANSITIONS=212} [2024-06-28 03:16:34,144 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 177 predicate places. [2024-06-28 03:16:34,144 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 212 transitions, 2426 flow [2024-06-28 03:16:34,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:34,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:34,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:34,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:16:34,144 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:34,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:34,144 INFO L85 PathProgramCache]: Analyzing trace with hash 973240300, now seen corresponding path program 8 times [2024-06-28 03:16:34,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:34,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785334841] [2024-06-28 03:16:34,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:34,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:34,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:34,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785334841] [2024-06-28 03:16:34,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785334841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:34,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:34,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:34,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680548244] [2024-06-28 03:16:34,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:34,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:34,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:34,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:34,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:34,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:34,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 212 transitions, 2426 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:34,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:34,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:34,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:35,294 INFO L124 PetriNetUnfolderBase]: 540/936 cut-off events. [2024-06-28 03:16:35,294 INFO L125 PetriNetUnfolderBase]: For 70600/70600 co-relation queries the response was YES. [2024-06-28 03:16:35,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7389 conditions, 936 events. 540/936 cut-off events. For 70600/70600 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4136 event pairs, 69 based on Foata normal form. 1/937 useless extension candidates. Maximal degree in co-relation 7303. Up to 718 conditions per place. [2024-06-28 03:16:35,301 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 150 selfloop transitions, 76 changer transitions 0/228 dead transitions. [2024-06-28 03:16:35,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 228 transitions, 3134 flow [2024-06-28 03:16:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 03:16:35,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:16:35,303 INFO L175 Difference]: Start difference. First operand has 209 places, 212 transitions, 2426 flow. Second operand 10 states and 125 transitions. [2024-06-28 03:16:35,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 228 transitions, 3134 flow [2024-06-28 03:16:35,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 228 transitions, 3041 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:35,435 INFO L231 Difference]: Finished difference. Result has 213 places, 214 transitions, 2508 flow [2024-06-28 03:16:35,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2508, PETRI_PLACES=213, PETRI_TRANSITIONS=214} [2024-06-28 03:16:35,436 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 181 predicate places. [2024-06-28 03:16:35,436 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 214 transitions, 2508 flow [2024-06-28 03:16:35,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:35,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:35,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:35,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:16:35,437 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:35,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash 973002964, now seen corresponding path program 10 times [2024-06-28 03:16:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:35,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274477759] [2024-06-28 03:16:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:35,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:36,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:36,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274477759] [2024-06-28 03:16:36,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274477759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:36,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:36,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:36,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401789877] [2024-06-28 03:16:36,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:36,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:36,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:36,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:36,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:36,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:36,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 214 transitions, 2508 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:36,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:36,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:36,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:36,651 INFO L124 PetriNetUnfolderBase]: 517/912 cut-off events. [2024-06-28 03:16:36,651 INFO L125 PetriNetUnfolderBase]: For 72418/72418 co-relation queries the response was YES. [2024-06-28 03:16:36,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7277 conditions, 912 events. 517/912 cut-off events. For 72418/72418 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4101 event pairs, 71 based on Foata normal form. 1/913 useless extension candidates. Maximal degree in co-relation 7190. Up to 657 conditions per place. [2024-06-28 03:16:36,657 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 128 selfloop transitions, 71 changer transitions 0/227 dead transitions. [2024-06-28 03:16:36,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 227 transitions, 3042 flow [2024-06-28 03:16:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:16:36,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:16:36,658 INFO L175 Difference]: Start difference. First operand has 213 places, 214 transitions, 2508 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:16:36,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 227 transitions, 3042 flow [2024-06-28 03:16:36,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 227 transitions, 2925 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:36,786 INFO L231 Difference]: Finished difference. Result has 217 places, 214 transitions, 2538 flow [2024-06-28 03:16:36,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2538, PETRI_PLACES=217, PETRI_TRANSITIONS=214} [2024-06-28 03:16:36,786 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 185 predicate places. [2024-06-28 03:16:36,786 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 214 transitions, 2538 flow [2024-06-28 03:16:36,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:36,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:36,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:36,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:16:36,787 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:36,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash 973003150, now seen corresponding path program 9 times [2024-06-28 03:16:36,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:36,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595309410] [2024-06-28 03:16:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:36,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:37,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:37,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595309410] [2024-06-28 03:16:37,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595309410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:37,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:37,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:37,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516802518] [2024-06-28 03:16:37,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:37,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:37,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:37,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:37,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:37,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:37,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 214 transitions, 2538 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:37,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:37,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:37,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:37,891 INFO L124 PetriNetUnfolderBase]: 541/938 cut-off events. [2024-06-28 03:16:37,891 INFO L125 PetriNetUnfolderBase]: For 74734/74734 co-relation queries the response was YES. [2024-06-28 03:16:37,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7465 conditions, 938 events. 541/938 cut-off events. For 74734/74734 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4143 event pairs, 69 based on Foata normal form. 1/939 useless extension candidates. Maximal degree in co-relation 7377. Up to 719 conditions per place. [2024-06-28 03:16:37,897 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 156 selfloop transitions, 72 changer transitions 0/230 dead transitions. [2024-06-28 03:16:37,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 230 transitions, 3258 flow [2024-06-28 03:16:37,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:37,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 03:16:37,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-28 03:16:37,905 INFO L175 Difference]: Start difference. First operand has 217 places, 214 transitions, 2538 flow. Second operand 10 states and 126 transitions. [2024-06-28 03:16:37,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 230 transitions, 3258 flow [2024-06-28 03:16:38,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 230 transitions, 3103 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:16:38,044 INFO L231 Difference]: Finished difference. Result has 218 places, 216 transitions, 2550 flow [2024-06-28 03:16:38,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2550, PETRI_PLACES=218, PETRI_TRANSITIONS=216} [2024-06-28 03:16:38,045 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2024-06-28 03:16:38,045 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 216 transitions, 2550 flow [2024-06-28 03:16:38,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:38,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:38,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:38,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:16:38,045 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:38,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:38,045 INFO L85 PathProgramCache]: Analyzing trace with hash 973009660, now seen corresponding path program 10 times [2024-06-28 03:16:38,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:38,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853167771] [2024-06-28 03:16:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:38,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:38,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:38,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853167771] [2024-06-28 03:16:38,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853167771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:38,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:38,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:38,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155344625] [2024-06-28 03:16:38,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:38,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:38,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:38,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:38,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:38,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:38,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 216 transitions, 2550 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:38,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:38,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:38,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:39,186 INFO L124 PetriNetUnfolderBase]: 539/935 cut-off events. [2024-06-28 03:16:39,186 INFO L125 PetriNetUnfolderBase]: For 75738/75738 co-relation queries the response was YES. [2024-06-28 03:16:39,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 935 events. 539/935 cut-off events. For 75738/75738 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4156 event pairs, 69 based on Foata normal form. 1/936 useless extension candidates. Maximal degree in co-relation 7357. Up to 717 conditions per place. [2024-06-28 03:16:39,195 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 156 selfloop transitions, 71 changer transitions 0/229 dead transitions. [2024-06-28 03:16:39,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 229 transitions, 3144 flow [2024-06-28 03:16:39,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 03:16:39,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-28 03:16:39,196 INFO L175 Difference]: Start difference. First operand has 218 places, 216 transitions, 2550 flow. Second operand 10 states and 126 transitions. [2024-06-28 03:16:39,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 229 transitions, 3144 flow [2024-06-28 03:16:39,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 229 transitions, 2998 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:16:39,345 INFO L231 Difference]: Finished difference. Result has 220 places, 216 transitions, 2551 flow [2024-06-28 03:16:39,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2404, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2551, PETRI_PLACES=220, PETRI_TRANSITIONS=216} [2024-06-28 03:16:39,345 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 188 predicate places. [2024-06-28 03:16:39,345 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 216 transitions, 2551 flow [2024-06-28 03:16:39,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:39,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:39,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:39,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:16:39,345 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:39,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:39,346 INFO L85 PathProgramCache]: Analyzing trace with hash 973009908, now seen corresponding path program 5 times [2024-06-28 03:16:39,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:39,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724477675] [2024-06-28 03:16:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:39,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:39,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:39,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724477675] [2024-06-28 03:16:39,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724477675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:39,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:39,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:39,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121653283] [2024-06-28 03:16:39,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:39,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:39,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:39,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:39,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:40,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:40,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 216 transitions, 2551 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:40,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:40,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:40,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:40,486 INFO L124 PetriNetUnfolderBase]: 533/929 cut-off events. [2024-06-28 03:16:40,486 INFO L125 PetriNetUnfolderBase]: For 77036/77036 co-relation queries the response was YES. [2024-06-28 03:16:40,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7295 conditions, 929 events. 533/929 cut-off events. For 77036/77036 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4151 event pairs, 105 based on Foata normal form. 3/932 useless extension candidates. Maximal degree in co-relation 7205. Up to 716 conditions per place. [2024-06-28 03:16:40,492 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 177 selfloop transitions, 56 changer transitions 0/235 dead transitions. [2024-06-28 03:16:40,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 235 transitions, 3187 flow [2024-06-28 03:16:40,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 03:16:40,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-28 03:16:40,493 INFO L175 Difference]: Start difference. First operand has 220 places, 216 transitions, 2551 flow. Second operand 10 states and 131 transitions. [2024-06-28 03:16:40,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 235 transitions, 3187 flow [2024-06-28 03:16:40,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 235 transitions, 3037 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:16:40,629 INFO L231 Difference]: Finished difference. Result has 222 places, 216 transitions, 2519 flow [2024-06-28 03:16:40,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2519, PETRI_PLACES=222, PETRI_TRANSITIONS=216} [2024-06-28 03:16:40,630 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 190 predicate places. [2024-06-28 03:16:40,630 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 216 transitions, 2519 flow [2024-06-28 03:16:40,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:40,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:40,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:40,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:16:40,631 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:40,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1456719168, now seen corresponding path program 11 times [2024-06-28 03:16:40,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:40,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940375158] [2024-06-28 03:16:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:40,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:41,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:41,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940375158] [2024-06-28 03:16:41,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940375158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:41,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:41,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:41,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561016572] [2024-06-28 03:16:41,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:41,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:41,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:41,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:41,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:41,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:41,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 216 transitions, 2519 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:41,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:41,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:41,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:41,708 INFO L124 PetriNetUnfolderBase]: 511/905 cut-off events. [2024-06-28 03:16:41,708 INFO L125 PetriNetUnfolderBase]: For 76936/76937 co-relation queries the response was YES. [2024-06-28 03:16:41,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7196 conditions, 905 events. 511/905 cut-off events. For 76936/76937 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4128 event pairs, 99 based on Foata normal form. 1/905 useless extension candidates. Maximal degree in co-relation 7105. Up to 737 conditions per place. [2024-06-28 03:16:41,714 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 160 selfloop transitions, 43 changer transitions 0/232 dead transitions. [2024-06-28 03:16:41,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 232 transitions, 2967 flow [2024-06-28 03:16:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 03:16:41,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-28 03:16:41,714 INFO L175 Difference]: Start difference. First operand has 222 places, 216 transitions, 2519 flow. Second operand 9 states and 118 transitions. [2024-06-28 03:16:41,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 232 transitions, 2967 flow [2024-06-28 03:16:41,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 232 transitions, 2843 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:16:41,845 INFO L231 Difference]: Finished difference. Result has 222 places, 216 transitions, 2498 flow [2024-06-28 03:16:41,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2395, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2498, PETRI_PLACES=222, PETRI_TRANSITIONS=216} [2024-06-28 03:16:41,846 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 190 predicate places. [2024-06-28 03:16:41,846 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 216 transitions, 2498 flow [2024-06-28 03:16:41,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:41,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:41,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:41,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:16:41,846 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:41,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:41,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1456839138, now seen corresponding path program 12 times [2024-06-28 03:16:41,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:41,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154746586] [2024-06-28 03:16:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:41,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:42,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:42,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154746586] [2024-06-28 03:16:42,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154746586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:42,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:42,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:42,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418906361] [2024-06-28 03:16:42,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:42,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:42,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:42,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:42,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:42,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:42,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 216 transitions, 2498 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:42,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:42,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:42,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:42,784 INFO L124 PetriNetUnfolderBase]: 516/913 cut-off events. [2024-06-28 03:16:42,784 INFO L125 PetriNetUnfolderBase]: For 81234/81236 co-relation queries the response was YES. [2024-06-28 03:16:42,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7316 conditions, 913 events. 516/913 cut-off events. For 81234/81236 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4199 event pairs, 91 based on Foata normal form. 1/911 useless extension candidates. Maximal degree in co-relation 7224. Up to 656 conditions per place. [2024-06-28 03:16:42,791 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 121 selfloop transitions, 83 changer transitions 0/233 dead transitions. [2024-06-28 03:16:42,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 233 transitions, 3088 flow [2024-06-28 03:16:42,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:42,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 03:16:42,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-28 03:16:42,792 INFO L175 Difference]: Start difference. First operand has 222 places, 216 transitions, 2498 flow. Second operand 9 states and 122 transitions. [2024-06-28 03:16:42,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 233 transitions, 3088 flow [2024-06-28 03:16:42,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 233 transitions, 2991 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:16:42,954 INFO L231 Difference]: Finished difference. Result has 222 places, 218 transitions, 2615 flow [2024-06-28 03:16:42,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2405, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2615, PETRI_PLACES=222, PETRI_TRANSITIONS=218} [2024-06-28 03:16:42,955 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 190 predicate places. [2024-06-28 03:16:42,955 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 218 transitions, 2615 flow [2024-06-28 03:16:42,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:42,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:42,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:42,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:16:42,955 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:42,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:42,955 INFO L85 PathProgramCache]: Analyzing trace with hash 984833841, now seen corresponding path program 1 times [2024-06-28 03:16:42,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:42,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554691210] [2024-06-28 03:16:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:42,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:43,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:43,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554691210] [2024-06-28 03:16:43,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554691210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:43,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:43,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:16:43,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137176423] [2024-06-28 03:16:43,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:43,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:16:43,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:43,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:16:43,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:16:43,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:43,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 218 transitions, 2615 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:43,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:43,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:43,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:44,241 INFO L124 PetriNetUnfolderBase]: 573/992 cut-off events. [2024-06-28 03:16:44,242 INFO L125 PetriNetUnfolderBase]: For 87936/87936 co-relation queries the response was YES. [2024-06-28 03:16:44,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7917 conditions, 992 events. 573/992 cut-off events. For 87936/87936 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4525 event pairs, 105 based on Foata normal form. 3/995 useless extension candidates. Maximal degree in co-relation 7825. Up to 639 conditions per place. [2024-06-28 03:16:44,248 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 180 selfloop transitions, 69 changer transitions 0/251 dead transitions. [2024-06-28 03:16:44,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 251 transitions, 3589 flow [2024-06-28 03:16:44,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:16:44,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:16:44,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-28 03:16:44,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-28 03:16:44,249 INFO L175 Difference]: Start difference. First operand has 222 places, 218 transitions, 2615 flow. Second operand 11 states and 150 transitions. [2024-06-28 03:16:44,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 251 transitions, 3589 flow [2024-06-28 03:16:44,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 251 transitions, 3414 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 03:16:44,375 INFO L231 Difference]: Finished difference. Result has 224 places, 226 transitions, 2705 flow [2024-06-28 03:16:44,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2705, PETRI_PLACES=224, PETRI_TRANSITIONS=226} [2024-06-28 03:16:44,376 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 192 predicate places. [2024-06-28 03:16:44,376 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 226 transitions, 2705 flow [2024-06-28 03:16:44,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:44,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:44,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:44,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:16:44,376 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:44,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:44,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1456839324, now seen corresponding path program 11 times [2024-06-28 03:16:44,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:44,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970470565] [2024-06-28 03:16:44,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:44,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:45,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970470565] [2024-06-28 03:16:45,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970470565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:45,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:45,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:45,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879850879] [2024-06-28 03:16:45,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:45,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:45,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:45,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:45,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:45,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:45,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 226 transitions, 2705 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:45,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:45,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:45,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:45,305 INFO L124 PetriNetUnfolderBase]: 576/997 cut-off events. [2024-06-28 03:16:45,305 INFO L125 PetriNetUnfolderBase]: For 79558/79558 co-relation queries the response was YES. [2024-06-28 03:16:45,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7950 conditions, 997 events. 576/997 cut-off events. For 79558/79558 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4543 event pairs, 102 based on Foata normal form. 1/998 useless extension candidates. Maximal degree in co-relation 7860. Up to 777 conditions per place. [2024-06-28 03:16:45,313 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 146 selfloop transitions, 95 changer transitions 0/243 dead transitions. [2024-06-28 03:16:45,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 243 transitions, 3352 flow [2024-06-28 03:16:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 03:16:45,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-28 03:16:45,314 INFO L175 Difference]: Start difference. First operand has 224 places, 226 transitions, 2705 flow. Second operand 9 states and 116 transitions. [2024-06-28 03:16:45,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 243 transitions, 3352 flow [2024-06-28 03:16:45,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 243 transitions, 3292 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:45,480 INFO L231 Difference]: Finished difference. Result has 228 places, 228 transitions, 2868 flow [2024-06-28 03:16:45,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2868, PETRI_PLACES=228, PETRI_TRANSITIONS=228} [2024-06-28 03:16:45,480 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 196 predicate places. [2024-06-28 03:16:45,481 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 228 transitions, 2868 flow [2024-06-28 03:16:45,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:45,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:45,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:45,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:16:45,481 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:45,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:45,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1658092514, now seen corresponding path program 13 times [2024-06-28 03:16:45,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:45,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605220617] [2024-06-28 03:16:45,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:45,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:46,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:46,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605220617] [2024-06-28 03:16:46,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605220617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:46,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:46,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:46,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22481390] [2024-06-28 03:16:46,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:46,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:46,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:46,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:46,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:46,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:46,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 228 transitions, 2868 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:46,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:46,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:46,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:46,540 INFO L124 PetriNetUnfolderBase]: 555/979 cut-off events. [2024-06-28 03:16:46,540 INFO L125 PetriNetUnfolderBase]: For 83316/83316 co-relation queries the response was YES. [2024-06-28 03:16:46,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8059 conditions, 979 events. 555/979 cut-off events. For 83316/83316 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4527 event pairs, 164 based on Foata normal form. 1/980 useless extension candidates. Maximal degree in co-relation 7967. Up to 832 conditions per place. [2024-06-28 03:16:46,548 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 182 selfloop transitions, 33 changer transitions 0/245 dead transitions. [2024-06-28 03:16:46,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 245 transitions, 3542 flow [2024-06-28 03:16:46,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 03:16:46,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-28 03:16:46,549 INFO L175 Difference]: Start difference. First operand has 228 places, 228 transitions, 2868 flow. Second operand 10 states and 124 transitions. [2024-06-28 03:16:46,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 245 transitions, 3542 flow [2024-06-28 03:16:46,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 245 transitions, 3384 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 03:16:46,686 INFO L231 Difference]: Finished difference. Result has 231 places, 232 transitions, 2885 flow [2024-06-28 03:16:46,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2720, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2885, PETRI_PLACES=231, PETRI_TRANSITIONS=232} [2024-06-28 03:16:46,686 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 199 predicate places. [2024-06-28 03:16:46,686 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 232 transitions, 2885 flow [2024-06-28 03:16:46,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:46,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:46,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:46,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:16:46,687 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:46,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:46,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1824333238, now seen corresponding path program 6 times [2024-06-28 03:16:46,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:46,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072170216] [2024-06-28 03:16:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:46,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:47,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:47,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:47,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072170216] [2024-06-28 03:16:47,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072170216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:47,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:47,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:47,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906609869] [2024-06-28 03:16:47,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:47,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:47,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:47,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:47,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:47,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:47,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 232 transitions, 2885 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:47,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:47,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:47,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:47,671 INFO L124 PetriNetUnfolderBase]: 598/1034 cut-off events. [2024-06-28 03:16:47,672 INFO L125 PetriNetUnfolderBase]: For 82773/82773 co-relation queries the response was YES. [2024-06-28 03:16:47,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8280 conditions, 1034 events. 598/1034 cut-off events. For 82773/82773 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4743 event pairs, 118 based on Foata normal form. 3/1037 useless extension candidates. Maximal degree in co-relation 8188. Up to 765 conditions per place. [2024-06-28 03:16:47,680 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 173 selfloop transitions, 81 changer transitions 0/256 dead transitions. [2024-06-28 03:16:47,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 256 transitions, 3624 flow [2024-06-28 03:16:47,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 03:16:47,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-28 03:16:47,681 INFO L175 Difference]: Start difference. First operand has 231 places, 232 transitions, 2885 flow. Second operand 9 states and 120 transitions. [2024-06-28 03:16:47,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 256 transitions, 3624 flow [2024-06-28 03:16:47,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 256 transitions, 3489 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:47,835 INFO L231 Difference]: Finished difference. Result has 233 places, 237 transitions, 2987 flow [2024-06-28 03:16:47,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2750, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2987, PETRI_PLACES=233, PETRI_TRANSITIONS=237} [2024-06-28 03:16:47,835 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 201 predicate places. [2024-06-28 03:16:47,836 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 237 transitions, 2987 flow [2024-06-28 03:16:47,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:47,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:47,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:47,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:16:47,836 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:47,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:47,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1658092700, now seen corresponding path program 12 times [2024-06-28 03:16:47,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:47,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264360497] [2024-06-28 03:16:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:47,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:48,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:48,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264360497] [2024-06-28 03:16:48,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264360497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:48,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:48,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247397575] [2024-06-28 03:16:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:48,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:48,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:48,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:48,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:48,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:48,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 237 transitions, 2987 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:48,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:48,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:48,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:48,755 INFO L124 PetriNetUnfolderBase]: 606/1047 cut-off events. [2024-06-28 03:16:48,755 INFO L125 PetriNetUnfolderBase]: For 84346/84346 co-relation queries the response was YES. [2024-06-28 03:16:48,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8595 conditions, 1047 events. 606/1047 cut-off events. For 84346/84346 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4797 event pairs, 107 based on Foata normal form. 1/1048 useless extension candidates. Maximal degree in co-relation 8502. Up to 823 conditions per place. [2024-06-28 03:16:48,763 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 164 selfloop transitions, 89 changer transitions 0/255 dead transitions. [2024-06-28 03:16:48,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 255 transitions, 3785 flow [2024-06-28 03:16:48,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 03:16:48,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-28 03:16:48,764 INFO L175 Difference]: Start difference. First operand has 233 places, 237 transitions, 2987 flow. Second operand 9 states and 116 transitions. [2024-06-28 03:16:48,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 255 transitions, 3785 flow [2024-06-28 03:16:48,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 255 transitions, 3700 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:48,919 INFO L231 Difference]: Finished difference. Result has 236 places, 241 transitions, 3137 flow [2024-06-28 03:16:48,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3137, PETRI_PLACES=236, PETRI_TRANSITIONS=241} [2024-06-28 03:16:48,919 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 204 predicate places. [2024-06-28 03:16:48,920 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 241 transitions, 3137 flow [2024-06-28 03:16:48,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:48,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:48,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:48,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:16:48,920 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:48,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:48,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1658099210, now seen corresponding path program 13 times [2024-06-28 03:16:48,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:48,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910886507] [2024-06-28 03:16:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:48,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:49,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:49,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910886507] [2024-06-28 03:16:49,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910886507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:49,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:49,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:49,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197255416] [2024-06-28 03:16:49,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:49,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:49,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:49,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:49,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:49,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:49,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 241 transitions, 3137 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:49,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:49,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:49,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:49,876 INFO L124 PetriNetUnfolderBase]: 604/1044 cut-off events. [2024-06-28 03:16:49,876 INFO L125 PetriNetUnfolderBase]: For 82754/82754 co-relation queries the response was YES. [2024-06-28 03:16:49,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8671 conditions, 1044 events. 604/1044 cut-off events. For 82754/82754 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4789 event pairs, 108 based on Foata normal form. 1/1045 useless extension candidates. Maximal degree in co-relation 8577. Up to 821 conditions per place. [2024-06-28 03:16:49,883 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 159 selfloop transitions, 93 changer transitions 0/254 dead transitions. [2024-06-28 03:16:49,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 254 transitions, 3781 flow [2024-06-28 03:16:49,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 03:16:49,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-28 03:16:49,884 INFO L175 Difference]: Start difference. First operand has 236 places, 241 transitions, 3137 flow. Second operand 9 states and 114 transitions. [2024-06-28 03:16:49,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 254 transitions, 3781 flow [2024-06-28 03:16:50,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 254 transitions, 3649 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:50,024 INFO L231 Difference]: Finished difference. Result has 238 places, 241 transitions, 3206 flow [2024-06-28 03:16:50,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3206, PETRI_PLACES=238, PETRI_TRANSITIONS=241} [2024-06-28 03:16:50,025 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 206 predicate places. [2024-06-28 03:16:50,025 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 241 transitions, 3206 flow [2024-06-28 03:16:50,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:50,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:50,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:50,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:16:50,026 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:50,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1830828358, now seen corresponding path program 7 times [2024-06-28 03:16:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:50,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489121042] [2024-06-28 03:16:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:50,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:50,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489121042] [2024-06-28 03:16:50,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489121042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:50,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:50,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:50,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276567924] [2024-06-28 03:16:50,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:50,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:50,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:50,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:50,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:50,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:50,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 241 transitions, 3206 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:50,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:50,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:50,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:51,010 INFO L124 PetriNetUnfolderBase]: 628/1084 cut-off events. [2024-06-28 03:16:51,011 INFO L125 PetriNetUnfolderBase]: For 87545/87545 co-relation queries the response was YES. [2024-06-28 03:16:51,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9046 conditions, 1084 events. 628/1084 cut-off events. For 87545/87545 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5018 event pairs, 117 based on Foata normal form. 3/1087 useless extension candidates. Maximal degree in co-relation 8953. Up to 795 conditions per place. [2024-06-28 03:16:51,020 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 182 selfloop transitions, 83 changer transitions 0/267 dead transitions. [2024-06-28 03:16:51,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 267 transitions, 4111 flow [2024-06-28 03:16:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 03:16:51,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-28 03:16:51,021 INFO L175 Difference]: Start difference. First operand has 238 places, 241 transitions, 3206 flow. Second operand 9 states and 119 transitions. [2024-06-28 03:16:51,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 267 transitions, 4111 flow [2024-06-28 03:16:51,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 267 transitions, 3896 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 03:16:51,175 INFO L231 Difference]: Finished difference. Result has 237 places, 247 transitions, 3257 flow [2024-06-28 03:16:51,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3257, PETRI_PLACES=237, PETRI_TRANSITIONS=247} [2024-06-28 03:16:51,176 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 205 predicate places. [2024-06-28 03:16:51,176 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 247 transitions, 3257 flow [2024-06-28 03:16:51,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:51,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:51,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:51,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:16:51,176 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:51,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1830819988, now seen corresponding path program 8 times [2024-06-28 03:16:51,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:51,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982243695] [2024-06-28 03:16:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:51,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:51,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982243695] [2024-06-28 03:16:51,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982243695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:51,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:51,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:51,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303135891] [2024-06-28 03:16:51,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:51,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:51,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:51,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:51,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:51,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:51,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 247 transitions, 3257 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:51,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:51,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:51,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:52,184 INFO L124 PetriNetUnfolderBase]: 637/1099 cut-off events. [2024-06-28 03:16:52,184 INFO L125 PetriNetUnfolderBase]: For 84774/84774 co-relation queries the response was YES. [2024-06-28 03:16:52,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9092 conditions, 1099 events. 637/1099 cut-off events. For 84774/84774 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5107 event pairs, 118 based on Foata normal form. 3/1102 useless extension candidates. Maximal degree in co-relation 9000. Up to 803 conditions per place. [2024-06-28 03:16:52,194 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 190 selfloop transitions, 81 changer transitions 0/273 dead transitions. [2024-06-28 03:16:52,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 273 transitions, 4159 flow [2024-06-28 03:16:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:52,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 03:16:52,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-28 03:16:52,194 INFO L175 Difference]: Start difference. First operand has 237 places, 247 transitions, 3257 flow. Second operand 9 states and 122 transitions. [2024-06-28 03:16:52,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 273 transitions, 4159 flow [2024-06-28 03:16:52,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 273 transitions, 4012 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:52,358 INFO L231 Difference]: Finished difference. Result has 240 places, 250 transitions, 3332 flow [2024-06-28 03:16:52,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3125, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3332, PETRI_PLACES=240, PETRI_TRANSITIONS=250} [2024-06-28 03:16:52,358 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2024-06-28 03:16:52,358 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 250 transitions, 3332 flow [2024-06-28 03:16:52,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:52,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:52,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:52,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:16:52,359 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:52,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:52,359 INFO L85 PathProgramCache]: Analyzing trace with hash -485556822, now seen corresponding path program 9 times [2024-06-28 03:16:52,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:52,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139558531] [2024-06-28 03:16:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:52,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:52,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:52,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139558531] [2024-06-28 03:16:52,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139558531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:52,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:52,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:52,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314413025] [2024-06-28 03:16:52,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:52,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:52,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:52,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:52,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:53,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:53,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 250 transitions, 3332 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:53,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:53,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:53,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:53,335 INFO L124 PetriNetUnfolderBase]: 631/1090 cut-off events. [2024-06-28 03:16:53,335 INFO L125 PetriNetUnfolderBase]: For 80988/80988 co-relation queries the response was YES. [2024-06-28 03:16:53,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8878 conditions, 1090 events. 631/1090 cut-off events. For 80988/80988 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5049 event pairs, 116 based on Foata normal form. 3/1093 useless extension candidates. Maximal degree in co-relation 8786. Up to 799 conditions per place. [2024-06-28 03:16:53,343 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 192 selfloop transitions, 78 changer transitions 0/272 dead transitions. [2024-06-28 03:16:53,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 272 transitions, 4080 flow [2024-06-28 03:16:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 03:16:53,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-28 03:16:53,344 INFO L175 Difference]: Start difference. First operand has 240 places, 250 transitions, 3332 flow. Second operand 9 states and 122 transitions. [2024-06-28 03:16:53,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 272 transitions, 4080 flow [2024-06-28 03:16:53,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 272 transitions, 3938 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:53,490 INFO L231 Difference]: Finished difference. Result has 242 places, 250 transitions, 3358 flow [2024-06-28 03:16:53,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3192, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3358, PETRI_PLACES=242, PETRI_TRANSITIONS=250} [2024-06-28 03:16:53,490 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 210 predicate places. [2024-06-28 03:16:53,490 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 250 transitions, 3358 flow [2024-06-28 03:16:53,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:53,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:53,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:53,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:16:53,491 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:53,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:53,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1830589100, now seen corresponding path program 14 times [2024-06-28 03:16:53,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:53,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851272706] [2024-06-28 03:16:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:53,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:54,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:54,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851272706] [2024-06-28 03:16:54,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851272706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:54,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:54,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:54,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118130540] [2024-06-28 03:16:54,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:54,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:54,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:54,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:54,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:54,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 250 transitions, 3358 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:54,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:54,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:54,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:54,468 INFO L124 PetriNetUnfolderBase]: 644/1108 cut-off events. [2024-06-28 03:16:54,468 INFO L125 PetriNetUnfolderBase]: For 81540/81540 co-relation queries the response was YES. [2024-06-28 03:16:54,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9071 conditions, 1108 events. 644/1108 cut-off events. For 81540/81540 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5120 event pairs, 80 based on Foata normal form. 1/1109 useless extension candidates. Maximal degree in co-relation 8979. Up to 882 conditions per place. [2024-06-28 03:16:54,475 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 179 selfloop transitions, 88 changer transitions 0/269 dead transitions. [2024-06-28 03:16:54,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 269 transitions, 4303 flow [2024-06-28 03:16:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 03:16:54,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-28 03:16:54,477 INFO L175 Difference]: Start difference. First operand has 242 places, 250 transitions, 3358 flow. Second operand 9 states and 116 transitions. [2024-06-28 03:16:54,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 269 transitions, 4303 flow [2024-06-28 03:16:54,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 269 transitions, 4072 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:16:54,642 INFO L231 Difference]: Finished difference. Result has 241 places, 256 transitions, 3386 flow [2024-06-28 03:16:54,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3386, PETRI_PLACES=241, PETRI_TRANSITIONS=256} [2024-06-28 03:16:54,643 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2024-06-28 03:16:54,643 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 256 transitions, 3386 flow [2024-06-28 03:16:54,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:54,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:54,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:54,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:16:54,643 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:54,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1830819740, now seen corresponding path program 15 times [2024-06-28 03:16:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:54,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876875124] [2024-06-28 03:16:54,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:54,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:55,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:55,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876875124] [2024-06-28 03:16:55,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876875124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:55,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:55,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:55,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169266198] [2024-06-28 03:16:55,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:55,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:55,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:55,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:55,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:55,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:55,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 256 transitions, 3386 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:55,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:55,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:55,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:55,587 INFO L124 PetriNetUnfolderBase]: 642/1105 cut-off events. [2024-06-28 03:16:55,587 INFO L125 PetriNetUnfolderBase]: For 79505/79505 co-relation queries the response was YES. [2024-06-28 03:16:55,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8972 conditions, 1105 events. 642/1105 cut-off events. For 79505/79505 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5121 event pairs, 78 based on Foata normal form. 1/1106 useless extension candidates. Maximal degree in co-relation 8880. Up to 880 conditions per place. [2024-06-28 03:16:55,596 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 168 selfloop transitions, 98 changer transitions 0/268 dead transitions. [2024-06-28 03:16:55,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 268 transitions, 4154 flow [2024-06-28 03:16:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 03:16:55,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-28 03:16:55,597 INFO L175 Difference]: Start difference. First operand has 241 places, 256 transitions, 3386 flow. Second operand 9 states and 113 transitions. [2024-06-28 03:16:55,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 268 transitions, 4154 flow [2024-06-28 03:16:55,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 268 transitions, 4020 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:55,778 INFO L231 Difference]: Finished difference. Result has 245 places, 256 transitions, 3460 flow [2024-06-28 03:16:55,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3256, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3460, PETRI_PLACES=245, PETRI_TRANSITIONS=256} [2024-06-28 03:16:55,778 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 213 predicate places. [2024-06-28 03:16:55,779 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 256 transitions, 3460 flow [2024-06-28 03:16:55,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:55,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:55,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:55,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:16:55,779 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:55,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:55,780 INFO L85 PathProgramCache]: Analyzing trace with hash -485563766, now seen corresponding path program 14 times [2024-06-28 03:16:55,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:55,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120800606] [2024-06-28 03:16:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:55,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:56,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:56,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120800606] [2024-06-28 03:16:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120800606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:56,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610115620] [2024-06-28 03:16:56,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:56,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:56,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:56,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:56,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:56,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:16:56,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 256 transitions, 3460 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:56,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:56,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:16:56,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:56,721 INFO L124 PetriNetUnfolderBase]: 618/1083 cut-off events. [2024-06-28 03:16:56,722 INFO L125 PetriNetUnfolderBase]: For 80408/80408 co-relation queries the response was YES. [2024-06-28 03:16:56,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8910 conditions, 1083 events. 618/1083 cut-off events. For 80408/80408 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5126 event pairs, 80 based on Foata normal form. 1/1084 useless extension candidates. Maximal degree in co-relation 8818. Up to 812 conditions per place. [2024-06-28 03:16:56,729 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 153 selfloop transitions, 81 changer transitions 0/269 dead transitions. [2024-06-28 03:16:56,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 269 transitions, 4090 flow [2024-06-28 03:16:56,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 03:16:56,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-28 03:16:56,730 INFO L175 Difference]: Start difference. First operand has 245 places, 256 transitions, 3460 flow. Second operand 9 states and 118 transitions. [2024-06-28 03:16:56,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 269 transitions, 4090 flow [2024-06-28 03:16:56,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 269 transitions, 3875 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:16:56,877 INFO L231 Difference]: Finished difference. Result has 245 places, 258 transitions, 3449 flow [2024-06-28 03:16:56,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3247, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3449, PETRI_PLACES=245, PETRI_TRANSITIONS=258} [2024-06-28 03:16:56,877 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 213 predicate places. [2024-06-28 03:16:56,877 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 258 transitions, 3449 flow [2024-06-28 03:16:56,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:56,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:56,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:56,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:16:56,878 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:56,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:56,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1830582590, now seen corresponding path program 16 times [2024-06-28 03:16:56,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:56,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604075132] [2024-06-28 03:16:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:56,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:57,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:57,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604075132] [2024-06-28 03:16:57,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604075132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:57,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:57,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:57,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854104021] [2024-06-28 03:16:57,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:57,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:57,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:57,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:57,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:57,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:57,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 258 transitions, 3449 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:57,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:57,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:57,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:57,842 INFO L124 PetriNetUnfolderBase]: 643/1107 cut-off events. [2024-06-28 03:16:57,842 INFO L125 PetriNetUnfolderBase]: For 78282/78282 co-relation queries the response was YES. [2024-06-28 03:16:57,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8950 conditions, 1107 events. 643/1107 cut-off events. For 78282/78282 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5147 event pairs, 82 based on Foata normal form. 1/1108 useless extension candidates. Maximal degree in co-relation 8858. Up to 883 conditions per place. [2024-06-28 03:16:57,850 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 177 selfloop transitions, 90 changer transitions 0/269 dead transitions. [2024-06-28 03:16:57,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 269 transitions, 4113 flow [2024-06-28 03:16:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:57,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 03:16:57,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-28 03:16:57,851 INFO L175 Difference]: Start difference. First operand has 245 places, 258 transitions, 3449 flow. Second operand 9 states and 113 transitions. [2024-06-28 03:16:57,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 269 transitions, 4113 flow [2024-06-28 03:16:57,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 269 transitions, 3958 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:57,990 INFO L231 Difference]: Finished difference. Result has 247 places, 258 transitions, 3484 flow [2024-06-28 03:16:57,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3296, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3484, PETRI_PLACES=247, PETRI_TRANSITIONS=258} [2024-06-28 03:16:57,991 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 215 predicate places. [2024-06-28 03:16:57,991 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 258 transitions, 3484 flow [2024-06-28 03:16:57,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:57,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:57,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:57,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:16:57,991 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:57,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash -57074544, now seen corresponding path program 10 times [2024-06-28 03:16:57,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:57,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106547481] [2024-06-28 03:16:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:57,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:58,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:58,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106547481] [2024-06-28 03:16:58,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106547481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:58,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:58,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:58,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658072011] [2024-06-28 03:16:58,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:58,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:58,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:58,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:58,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:58,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:58,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 258 transitions, 3484 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:58,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:58,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:58,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:59,000 INFO L124 PetriNetUnfolderBase]: 667/1148 cut-off events. [2024-06-28 03:16:59,000 INFO L125 PetriNetUnfolderBase]: For 86008/86008 co-relation queries the response was YES. [2024-06-28 03:16:59,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9345 conditions, 1148 events. 667/1148 cut-off events. For 86008/86008 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5399 event pairs, 183 based on Foata normal form. 3/1151 useless extension candidates. Maximal degree in co-relation 9253. Up to 1067 conditions per place. [2024-06-28 03:16:59,009 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 252 selfloop transitions, 25 changer transitions 0/279 dead transitions. [2024-06-28 03:16:59,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 279 transitions, 4285 flow [2024-06-28 03:16:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 03:16:59,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:16:59,010 INFO L175 Difference]: Start difference. First operand has 247 places, 258 transitions, 3484 flow. Second operand 9 states and 108 transitions. [2024-06-28 03:16:59,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 279 transitions, 4285 flow [2024-06-28 03:16:59,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 279 transitions, 4092 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:16:59,177 INFO L231 Difference]: Finished difference. Result has 247 places, 264 transitions, 3441 flow [2024-06-28 03:16:59,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3441, PETRI_PLACES=247, PETRI_TRANSITIONS=264} [2024-06-28 03:16:59,178 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 215 predicate places. [2024-06-28 03:16:59,178 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 264 transitions, 3441 flow [2024-06-28 03:16:59,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:59,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:59,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:59,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:16:59,178 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:16:59,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:59,179 INFO L85 PathProgramCache]: Analyzing trace with hash -838645342, now seen corresponding path program 17 times [2024-06-28 03:16:59,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:59,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120439803] [2024-06-28 03:16:59,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:59,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:59,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:59,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120439803] [2024-06-28 03:16:59,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120439803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:59,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:59,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:59,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653772030] [2024-06-28 03:16:59,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:59,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:59,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:59,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:59,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:16:59,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 264 transitions, 3441 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:59,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:59,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:16:59,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:00,152 INFO L124 PetriNetUnfolderBase]: 670/1153 cut-off events. [2024-06-28 03:17:00,152 INFO L125 PetriNetUnfolderBase]: For 82879/82879 co-relation queries the response was YES. [2024-06-28 03:17:00,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9253 conditions, 1153 events. 670/1153 cut-off events. For 82879/82879 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5445 event pairs, 190 based on Foata normal form. 1/1154 useless extension candidates. Maximal degree in co-relation 9161. Up to 1123 conditions per place. [2024-06-28 03:17:00,160 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 257 selfloop transitions, 15 changer transitions 0/274 dead transitions. [2024-06-28 03:17:00,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 274 transitions, 4028 flow [2024-06-28 03:17:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:00,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:17:00,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-28 03:17:00,161 INFO L175 Difference]: Start difference. First operand has 247 places, 264 transitions, 3441 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:17:00,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 274 transitions, 4028 flow [2024-06-28 03:17:00,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 274 transitions, 3986 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:00,326 INFO L231 Difference]: Finished difference. Result has 251 places, 266 transitions, 3463 flow [2024-06-28 03:17:00,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3399, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3463, PETRI_PLACES=251, PETRI_TRANSITIONS=266} [2024-06-28 03:17:00,326 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2024-06-28 03:17:00,327 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 266 transitions, 3463 flow [2024-06-28 03:17:00,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:00,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:00,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:00,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:17:00,327 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:00,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:00,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1123982548, now seen corresponding path program 15 times [2024-06-28 03:17:00,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:00,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463158754] [2024-06-28 03:17:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:00,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:01,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:01,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463158754] [2024-06-28 03:17:01,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463158754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:01,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:01,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:01,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695366600] [2024-06-28 03:17:01,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:01,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:01,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:01,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:01,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:01,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:17:01,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 266 transitions, 3463 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:01,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:01,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:17:01,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:01,364 INFO L124 PetriNetUnfolderBase]: 641/1123 cut-off events. [2024-06-28 03:17:01,364 INFO L125 PetriNetUnfolderBase]: For 84883/84883 co-relation queries the response was YES. [2024-06-28 03:17:01,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9094 conditions, 1123 events. 641/1123 cut-off events. For 84883/84883 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5401 event pairs, 176 based on Foata normal form. 1/1124 useless extension candidates. Maximal degree in co-relation 9000. Up to 1014 conditions per place. [2024-06-28 03:17:01,373 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 222 selfloop transitions, 16 changer transitions 0/274 dead transitions. [2024-06-28 03:17:01,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 274 transitions, 3957 flow [2024-06-28 03:17:01,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:17:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:17:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:17:01,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-28 03:17:01,375 INFO L175 Difference]: Start difference. First operand has 251 places, 266 transitions, 3463 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:17:01,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 274 transitions, 3957 flow [2024-06-28 03:17:01,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 274 transitions, 3916 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:01,573 INFO L231 Difference]: Finished difference. Result has 254 places, 266 transitions, 3459 flow [2024-06-28 03:17:01,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3422, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3459, PETRI_PLACES=254, PETRI_TRANSITIONS=266} [2024-06-28 03:17:01,573 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 222 predicate places. [2024-06-28 03:17:01,573 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 266 transitions, 3459 flow [2024-06-28 03:17:01,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:01,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:01,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:01,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:17:01,574 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:01,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:01,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1123982362, now seen corresponding path program 18 times [2024-06-28 03:17:01,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:01,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161425444] [2024-06-28 03:17:01,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:01,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:02,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:02,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161425444] [2024-06-28 03:17:02,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161425444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:02,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:02,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:02,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988956597] [2024-06-28 03:17:02,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:02,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:02,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:02,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:02,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:02,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 266 transitions, 3459 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:02,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:02,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:02,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:02,531 INFO L124 PetriNetUnfolderBase]: 671/1155 cut-off events. [2024-06-28 03:17:02,531 INFO L125 PetriNetUnfolderBase]: For 87259/87259 co-relation queries the response was YES. [2024-06-28 03:17:02,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9312 conditions, 1155 events. 671/1155 cut-off events. For 87259/87259 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5462 event pairs, 190 based on Foata normal form. 1/1156 useless extension candidates. Maximal degree in co-relation 9217. Up to 1098 conditions per place. [2024-06-28 03:17:02,541 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 247 selfloop transitions, 28 changer transitions 0/277 dead transitions. [2024-06-28 03:17:02,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 277 transitions, 4166 flow [2024-06-28 03:17:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:17:02,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-28 03:17:02,542 INFO L175 Difference]: Start difference. First operand has 254 places, 266 transitions, 3459 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:17:02,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 277 transitions, 4166 flow [2024-06-28 03:17:02,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 277 transitions, 4032 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:17:02,709 INFO L231 Difference]: Finished difference. Result has 252 places, 268 transitions, 3415 flow [2024-06-28 03:17:02,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3325, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3415, PETRI_PLACES=252, PETRI_TRANSITIONS=268} [2024-06-28 03:17:02,709 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 220 predicate places. [2024-06-28 03:17:02,709 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 268 transitions, 3415 flow [2024-06-28 03:17:02,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:02,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:02,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:02,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:17:02,710 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:02,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:02,710 INFO L85 PathProgramCache]: Analyzing trace with hash -828160894, now seen corresponding path program 1 times [2024-06-28 03:17:02,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:02,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393800831] [2024-06-28 03:17:02,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:02,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:03,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:03,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393800831] [2024-06-28 03:17:03,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393800831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:03,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:03,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:03,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841546922] [2024-06-28 03:17:03,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:03,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:03,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:03,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:03,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:03,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:17:03,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 268 transitions, 3415 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:03,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:03,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:17:03,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:03,978 INFO L124 PetriNetUnfolderBase]: 625/1102 cut-off events. [2024-06-28 03:17:03,978 INFO L125 PetriNetUnfolderBase]: For 90792/90800 co-relation queries the response was YES. [2024-06-28 03:17:03,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8868 conditions, 1102 events. 625/1102 cut-off events. For 90792/90800 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5387 event pairs, 166 based on Foata normal form. 10/1106 useless extension candidates. Maximal degree in co-relation 8773. Up to 962 conditions per place. [2024-06-28 03:17:03,987 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 221 selfloop transitions, 15 changer transitions 0/281 dead transitions. [2024-06-28 03:17:03,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 281 transitions, 3939 flow [2024-06-28 03:17:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 03:17:03,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-28 03:17:03,988 INFO L175 Difference]: Start difference. First operand has 252 places, 268 transitions, 3415 flow. Second operand 9 states and 107 transitions. [2024-06-28 03:17:03,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 281 transitions, 3939 flow [2024-06-28 03:17:04,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 281 transitions, 3747 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:04,164 INFO L231 Difference]: Finished difference. Result has 253 places, 272 transitions, 3301 flow [2024-06-28 03:17:04,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3301, PETRI_PLACES=253, PETRI_TRANSITIONS=272} [2024-06-28 03:17:04,165 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 221 predicate places. [2024-06-28 03:17:04,165 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 272 transitions, 3301 flow [2024-06-28 03:17:04,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:04,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:04,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:04,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:17:04,165 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:04,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:04,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1447182500, now seen corresponding path program 11 times [2024-06-28 03:17:04,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:04,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450748685] [2024-06-28 03:17:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:04,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:04,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:04,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450748685] [2024-06-28 03:17:04,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450748685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:04,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:04,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409495645] [2024-06-28 03:17:04,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:04,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:04,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:04,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:04,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:04,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:04,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 272 transitions, 3301 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:04,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:04,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:04,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:05,258 INFO L124 PetriNetUnfolderBase]: 681/1172 cut-off events. [2024-06-28 03:17:05,258 INFO L125 PetriNetUnfolderBase]: For 93654/93654 co-relation queries the response was YES. [2024-06-28 03:17:05,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9426 conditions, 1172 events. 681/1172 cut-off events. For 93654/93654 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5558 event pairs, 185 based on Foata normal form. 3/1175 useless extension candidates. Maximal degree in co-relation 9329. Up to 1084 conditions per place. [2024-06-28 03:17:05,267 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 264 selfloop transitions, 26 changer transitions 0/292 dead transitions. [2024-06-28 03:17:05,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 292 transitions, 4121 flow [2024-06-28 03:17:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 03:17:05,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-28 03:17:05,268 INFO L175 Difference]: Start difference. First operand has 253 places, 272 transitions, 3301 flow. Second operand 9 states and 109 transitions. [2024-06-28 03:17:05,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 292 transitions, 4121 flow [2024-06-28 03:17:05,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 292 transitions, 4075 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:05,450 INFO L231 Difference]: Finished difference. Result has 256 places, 275 transitions, 3359 flow [2024-06-28 03:17:05,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3255, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3359, PETRI_PLACES=256, PETRI_TRANSITIONS=275} [2024-06-28 03:17:05,450 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 224 predicate places. [2024-06-28 03:17:05,450 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 275 transitions, 3359 flow [2024-06-28 03:17:05,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:05,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:05,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:05,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:17:05,451 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:05,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash -828517394, now seen corresponding path program 12 times [2024-06-28 03:17:05,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:05,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351039615] [2024-06-28 03:17:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:05,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:06,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351039615] [2024-06-28 03:17:06,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351039615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:06,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:06,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:06,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044979096] [2024-06-28 03:17:06,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:06,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:06,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:06,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:06,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:06,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:06,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 275 transitions, 3359 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:06,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:06,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:06,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:06,489 INFO L124 PetriNetUnfolderBase]: 675/1163 cut-off events. [2024-06-28 03:17:06,489 INFO L125 PetriNetUnfolderBase]: For 91998/91998 co-relation queries the response was YES. [2024-06-28 03:17:06,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9271 conditions, 1163 events. 675/1163 cut-off events. For 91998/91998 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5529 event pairs, 182 based on Foata normal form. 3/1166 useless extension candidates. Maximal degree in co-relation 9173. Up to 1117 conditions per place. [2024-06-28 03:17:06,499 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 268 selfloop transitions, 17 changer transitions 0/287 dead transitions. [2024-06-28 03:17:06,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 287 transitions, 3975 flow [2024-06-28 03:17:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 03:17:06,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-28 03:17:06,499 INFO L175 Difference]: Start difference. First operand has 256 places, 275 transitions, 3359 flow. Second operand 9 states and 102 transitions. [2024-06-28 03:17:06,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 287 transitions, 3975 flow [2024-06-28 03:17:06,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 287 transitions, 3917 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:06,677 INFO L231 Difference]: Finished difference. Result has 259 places, 275 transitions, 3342 flow [2024-06-28 03:17:06,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3342, PETRI_PLACES=259, PETRI_TRANSITIONS=275} [2024-06-28 03:17:06,677 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 227 predicate places. [2024-06-28 03:17:06,677 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 275 transitions, 3342 flow [2024-06-28 03:17:06,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:06,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:06,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:06,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:17:06,677 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:06,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:06,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1123744964, now seen corresponding path program 13 times [2024-06-28 03:17:06,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:06,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649932473] [2024-06-28 03:17:06,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:06,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:07,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:07,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649932473] [2024-06-28 03:17:07,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649932473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:07,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:07,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:07,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817897119] [2024-06-28 03:17:07,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:07,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:07,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:07,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:07,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:07,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:07,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 275 transitions, 3342 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:07,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:07,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:07,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:07,723 INFO L124 PetriNetUnfolderBase]: 699/1202 cut-off events. [2024-06-28 03:17:07,723 INFO L125 PetriNetUnfolderBase]: For 100472/100472 co-relation queries the response was YES. [2024-06-28 03:17:07,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9715 conditions, 1202 events. 699/1202 cut-off events. For 100472/100472 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5721 event pairs, 184 based on Foata normal form. 3/1205 useless extension candidates. Maximal degree in co-relation 9616. Up to 1054 conditions per place. [2024-06-28 03:17:07,733 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 259 selfloop transitions, 40 changer transitions 0/301 dead transitions. [2024-06-28 03:17:07,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 301 transitions, 4370 flow [2024-06-28 03:17:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 03:17:07,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-28 03:17:07,735 INFO L175 Difference]: Start difference. First operand has 259 places, 275 transitions, 3342 flow. Second operand 9 states and 116 transitions. [2024-06-28 03:17:07,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 301 transitions, 4370 flow [2024-06-28 03:17:07,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 301 transitions, 4315 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:07,943 INFO L231 Difference]: Finished difference. Result has 259 places, 281 transitions, 3471 flow [2024-06-28 03:17:07,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3287, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3471, PETRI_PLACES=259, PETRI_TRANSITIONS=281} [2024-06-28 03:17:07,943 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 227 predicate places. [2024-06-28 03:17:07,943 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 281 transitions, 3471 flow [2024-06-28 03:17:07,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:07,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:07,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:07,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:17:07,943 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:07,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:07,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1162074012, now seen corresponding path program 19 times [2024-06-28 03:17:07,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:07,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755873183] [2024-06-28 03:17:07,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:07,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:08,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:08,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755873183] [2024-06-28 03:17:08,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755873183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:08,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:08,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:08,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631347212] [2024-06-28 03:17:08,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:08,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:08,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:08,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:08,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:08,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:08,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 281 transitions, 3471 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:08,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:08,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:08,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:09,007 INFO L124 PetriNetUnfolderBase]: 702/1207 cut-off events. [2024-06-28 03:17:09,007 INFO L125 PetriNetUnfolderBase]: For 100519/100519 co-relation queries the response was YES. [2024-06-28 03:17:09,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9850 conditions, 1207 events. 702/1207 cut-off events. For 100519/100519 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5774 event pairs, 187 based on Foata normal form. 1/1208 useless extension candidates. Maximal degree in co-relation 9750. Up to 1149 conditions per place. [2024-06-28 03:17:09,016 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 263 selfloop transitions, 27 changer transitions 0/292 dead transitions. [2024-06-28 03:17:09,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 292 transitions, 4214 flow [2024-06-28 03:17:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:17:09,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-28 03:17:09,016 INFO L175 Difference]: Start difference. First operand has 259 places, 281 transitions, 3471 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:17:09,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 292 transitions, 4214 flow [2024-06-28 03:17:09,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 292 transitions, 4059 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:09,244 INFO L231 Difference]: Finished difference. Result has 261 places, 283 transitions, 3400 flow [2024-06-28 03:17:09,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3400, PETRI_PLACES=261, PETRI_TRANSITIONS=283} [2024-06-28 03:17:09,244 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 229 predicate places. [2024-06-28 03:17:09,244 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 283 transitions, 3400 flow [2024-06-28 03:17:09,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:09,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:09,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:09,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:17:09,245 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:09,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:09,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1123975604, now seen corresponding path program 14 times [2024-06-28 03:17:09,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:09,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954787867] [2024-06-28 03:17:09,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:09,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:09,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:09,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954787867] [2024-06-28 03:17:09,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954787867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:09,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:09,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:09,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496534765] [2024-06-28 03:17:09,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:09,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:09,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:09,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:09,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:09,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 283 transitions, 3400 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:09,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:09,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:09,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:10,225 INFO L124 PetriNetUnfolderBase]: 696/1198 cut-off events. [2024-06-28 03:17:10,225 INFO L125 PetriNetUnfolderBase]: For 101165/101165 co-relation queries the response was YES. [2024-06-28 03:17:10,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9529 conditions, 1198 events. 696/1198 cut-off events. For 101165/101165 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5714 event pairs, 178 based on Foata normal form. 3/1201 useless extension candidates. Maximal degree in co-relation 9429. Up to 1055 conditions per place. [2024-06-28 03:17:10,235 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 251 selfloop transitions, 45 changer transitions 0/298 dead transitions. [2024-06-28 03:17:10,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 298 transitions, 4175 flow [2024-06-28 03:17:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:10,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 03:17:10,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-28 03:17:10,236 INFO L175 Difference]: Start difference. First operand has 261 places, 283 transitions, 3400 flow. Second operand 9 states and 111 transitions. [2024-06-28 03:17:10,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 298 transitions, 4175 flow [2024-06-28 03:17:10,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 298 transitions, 4116 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:10,411 INFO L231 Difference]: Finished difference. Result has 264 places, 283 transitions, 3437 flow [2024-06-28 03:17:10,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3341, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3437, PETRI_PLACES=264, PETRI_TRANSITIONS=283} [2024-06-28 03:17:10,412 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 232 predicate places. [2024-06-28 03:17:10,412 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 283 transitions, 3437 flow [2024-06-28 03:17:10,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:10,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:10,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:10,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:17:10,412 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:10,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:10,412 INFO L85 PathProgramCache]: Analyzing trace with hash -252445724, now seen corresponding path program 20 times [2024-06-28 03:17:10,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:10,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605509230] [2024-06-28 03:17:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:10,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:11,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:11,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605509230] [2024-06-28 03:17:11,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605509230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:11,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:11,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:11,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694416380] [2024-06-28 03:17:11,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:11,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:11,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:11,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:11,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:11,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:11,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 283 transitions, 3437 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:11,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:11,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:11,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:11,409 INFO L124 PetriNetUnfolderBase]: 694/1195 cut-off events. [2024-06-28 03:17:11,409 INFO L125 PetriNetUnfolderBase]: For 98836/98836 co-relation queries the response was YES. [2024-06-28 03:17:11,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9558 conditions, 1195 events. 694/1195 cut-off events. For 98836/98836 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5698 event pairs, 185 based on Foata normal form. 1/1196 useless extension candidates. Maximal degree in co-relation 9457. Up to 1138 conditions per place. [2024-06-28 03:17:11,420 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 261 selfloop transitions, 28 changer transitions 0/291 dead transitions. [2024-06-28 03:17:11,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 291 transitions, 4033 flow [2024-06-28 03:17:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:17:11,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-28 03:17:11,421 INFO L175 Difference]: Start difference. First operand has 264 places, 283 transitions, 3437 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:17:11,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 291 transitions, 4033 flow [2024-06-28 03:17:11,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 291 transitions, 3855 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:11,617 INFO L231 Difference]: Finished difference. Result has 264 places, 283 transitions, 3320 flow [2024-06-28 03:17:11,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3259, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3320, PETRI_PLACES=264, PETRI_TRANSITIONS=283} [2024-06-28 03:17:11,618 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 232 predicate places. [2024-06-28 03:17:11,618 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 283 transitions, 3320 flow [2024-06-28 03:17:11,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:11,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:11,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:11,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:17:11,618 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:11,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:11,618 INFO L85 PathProgramCache]: Analyzing trace with hash -252206466, now seen corresponding path program 15 times [2024-06-28 03:17:11,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:11,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562786382] [2024-06-28 03:17:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:11,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:12,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:12,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562786382] [2024-06-28 03:17:12,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562786382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:12,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:12,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:12,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997484408] [2024-06-28 03:17:12,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:12,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:12,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:12,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:12,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 283 transitions, 3320 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:12,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:12,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:12,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:12,657 INFO L124 PetriNetUnfolderBase]: 688/1186 cut-off events. [2024-06-28 03:17:12,657 INFO L125 PetriNetUnfolderBase]: For 99514/99514 co-relation queries the response was YES. [2024-06-28 03:17:12,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9260 conditions, 1186 events. 688/1186 cut-off events. For 99514/99514 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5660 event pairs, 182 based on Foata normal form. 3/1189 useless extension candidates. Maximal degree in co-relation 9158. Up to 1048 conditions per place. [2024-06-28 03:17:12,667 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 256 selfloop transitions, 41 changer transitions 0/299 dead transitions. [2024-06-28 03:17:12,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 299 transitions, 3995 flow [2024-06-28 03:17:12,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 03:17:12,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-28 03:17:12,668 INFO L175 Difference]: Start difference. First operand has 264 places, 283 transitions, 3320 flow. Second operand 9 states and 111 transitions. [2024-06-28 03:17:12,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 299 transitions, 3995 flow [2024-06-28 03:17:12,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 299 transitions, 3912 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:12,906 INFO L231 Difference]: Finished difference. Result has 264 places, 283 transitions, 3326 flow [2024-06-28 03:17:12,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3326, PETRI_PLACES=264, PETRI_TRANSITIONS=283} [2024-06-28 03:17:12,906 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 232 predicate places. [2024-06-28 03:17:12,906 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 283 transitions, 3326 flow [2024-06-28 03:17:12,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:12,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:12,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:12,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:17:12,907 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:12,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash -828147998, now seen corresponding path program 1 times [2024-06-28 03:17:12,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:12,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624805095] [2024-06-28 03:17:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:12,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:13,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:13,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624805095] [2024-06-28 03:17:13,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624805095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:13,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:13,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:13,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349342258] [2024-06-28 03:17:13,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:13,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:13,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:13,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:13,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:14,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:17:14,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 283 transitions, 3326 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:14,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:14,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:17:14,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:14,472 INFO L124 PetriNetUnfolderBase]: 632/1120 cut-off events. [2024-06-28 03:17:14,472 INFO L125 PetriNetUnfolderBase]: For 98037/98045 co-relation queries the response was YES. [2024-06-28 03:17:14,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8752 conditions, 1120 events. 632/1120 cut-off events. For 98037/98045 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5568 event pairs, 165 based on Foata normal form. 10/1124 useless extension candidates. Maximal degree in co-relation 8649. Up to 970 conditions per place. [2024-06-28 03:17:14,482 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 226 selfloop transitions, 15 changer transitions 0/292 dead transitions. [2024-06-28 03:17:14,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 292 transitions, 3828 flow [2024-06-28 03:17:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 03:17:14,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2024-06-28 03:17:14,483 INFO L175 Difference]: Start difference. First operand has 264 places, 283 transitions, 3326 flow. Second operand 9 states and 106 transitions. [2024-06-28 03:17:14,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 292 transitions, 3828 flow [2024-06-28 03:17:14,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 292 transitions, 3739 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:14,646 INFO L231 Difference]: Finished difference. Result has 265 places, 283 transitions, 3271 flow [2024-06-28 03:17:14,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3271, PETRI_PLACES=265, PETRI_TRANSITIONS=283} [2024-06-28 03:17:14,646 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 233 predicate places. [2024-06-28 03:17:14,646 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 283 transitions, 3271 flow [2024-06-28 03:17:14,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:14,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:14,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:14,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:17:14,647 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:14,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:14,647 INFO L85 PathProgramCache]: Analyzing trace with hash -94830253, now seen corresponding path program 1 times [2024-06-28 03:17:14,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:14,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244822304] [2024-06-28 03:17:14,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:14,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:15,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:15,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244822304] [2024-06-28 03:17:15,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244822304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:15,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:15,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:15,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564314872] [2024-06-28 03:17:15,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:15,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:15,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:15,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:15,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:15,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:17:15,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 283 transitions, 3271 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:15,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:15,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:17:15,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:15,759 INFO L124 PetriNetUnfolderBase]: 671/1175 cut-off events. [2024-06-28 03:17:15,759 INFO L125 PetriNetUnfolderBase]: For 104222/104224 co-relation queries the response was YES. [2024-06-28 03:17:15,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9306 conditions, 1175 events. 671/1175 cut-off events. For 104222/104224 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5783 event pairs, 110 based on Foata normal form. 1/1174 useless extension candidates. Maximal degree in co-relation 9202. Up to 951 conditions per place. [2024-06-28 03:17:15,769 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 228 selfloop transitions, 44 changer transitions 0/310 dead transitions. [2024-06-28 03:17:15,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 310 transitions, 4053 flow [2024-06-28 03:17:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:17:15,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-28 03:17:15,770 INFO L175 Difference]: Start difference. First operand has 265 places, 283 transitions, 3271 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:17:15,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 310 transitions, 4053 flow [2024-06-28 03:17:16,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 310 transitions, 4014 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:16,067 INFO L231 Difference]: Finished difference. Result has 270 places, 290 transitions, 3403 flow [2024-06-28 03:17:16,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3403, PETRI_PLACES=270, PETRI_TRANSITIONS=290} [2024-06-28 03:17:16,068 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 238 predicate places. [2024-06-28 03:17:16,068 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 290 transitions, 3403 flow [2024-06-28 03:17:16,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:16,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:16,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:16,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:17:16,068 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:16,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1158886934, now seen corresponding path program 1 times [2024-06-28 03:17:16,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:16,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831479075] [2024-06-28 03:17:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:16,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:16,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:16,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831479075] [2024-06-28 03:17:16,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831479075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:16,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:16,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:16,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016006368] [2024-06-28 03:17:16,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:16,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:16,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:16,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:16,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:16,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:16,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 290 transitions, 3403 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:16,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:16,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:16,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:17,221 INFO L124 PetriNetUnfolderBase]: 705/1214 cut-off events. [2024-06-28 03:17:17,221 INFO L125 PetriNetUnfolderBase]: For 104696/104696 co-relation queries the response was YES. [2024-06-28 03:17:17,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9613 conditions, 1214 events. 705/1214 cut-off events. For 104696/104696 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5825 event pairs, 121 based on Foata normal form. 1/1215 useless extension candidates. Maximal degree in co-relation 9507. Up to 1097 conditions per place. [2024-06-28 03:17:17,231 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 267 selfloop transitions, 46 changer transitions 0/315 dead transitions. [2024-06-28 03:17:17,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 315 transitions, 4253 flow [2024-06-28 03:17:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:17:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:17:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 03:17:17,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-28 03:17:17,232 INFO L175 Difference]: Start difference. First operand has 270 places, 290 transitions, 3403 flow. Second operand 12 states and 140 transitions. [2024-06-28 03:17:17,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 315 transitions, 4253 flow [2024-06-28 03:17:17,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 315 transitions, 4198 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:17,493 INFO L231 Difference]: Finished difference. Result has 277 places, 294 transitions, 3489 flow [2024-06-28 03:17:17,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3348, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3489, PETRI_PLACES=277, PETRI_TRANSITIONS=294} [2024-06-28 03:17:17,494 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 245 predicate places. [2024-06-28 03:17:17,494 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 294 transitions, 3489 flow [2024-06-28 03:17:17,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:17,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:17,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:17,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:17:17,495 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:17,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:17,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1301033655, now seen corresponding path program 2 times [2024-06-28 03:17:17,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:17,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21114027] [2024-06-28 03:17:17,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:17,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:18,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:18,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21114027] [2024-06-28 03:17:18,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21114027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:18,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:18,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:18,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870807697] [2024-06-28 03:17:18,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:18,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:18,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:18,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:18,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:18,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:17:18,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 294 transitions, 3489 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:18,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:18,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:17:18,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:18,972 INFO L124 PetriNetUnfolderBase]: 685/1199 cut-off events. [2024-06-28 03:17:18,972 INFO L125 PetriNetUnfolderBase]: For 108790/108790 co-relation queries the response was YES. [2024-06-28 03:17:18,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9665 conditions, 1199 events. 685/1199 cut-off events. For 108790/108790 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5894 event pairs, 114 based on Foata normal form. 1/1200 useless extension candidates. Maximal degree in co-relation 9557. Up to 1011 conditions per place. [2024-06-28 03:17:18,982 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 238 selfloop transitions, 40 changer transitions 0/318 dead transitions. [2024-06-28 03:17:18,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 318 transitions, 4133 flow [2024-06-28 03:17:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:17:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:17:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:17:18,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:17:18,983 INFO L175 Difference]: Start difference. First operand has 277 places, 294 transitions, 3489 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:17:18,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 318 transitions, 4133 flow [2024-06-28 03:17:19,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 318 transitions, 4058 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:19,255 INFO L231 Difference]: Finished difference. Result has 282 places, 298 transitions, 3545 flow [2024-06-28 03:17:19,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3545, PETRI_PLACES=282, PETRI_TRANSITIONS=298} [2024-06-28 03:17:19,255 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 250 predicate places. [2024-06-28 03:17:19,255 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 298 transitions, 3545 flow [2024-06-28 03:17:19,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:19,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:19,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:19,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:17:19,256 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:19,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:19,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1298212810, now seen corresponding path program 2 times [2024-06-28 03:17:19,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:19,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352565794] [2024-06-28 03:17:19,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:19,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:19,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:19,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352565794] [2024-06-28 03:17:19,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352565794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:19,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:19,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:19,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405087926] [2024-06-28 03:17:19,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:19,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:19,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:19,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:19,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:20,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:20,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 298 transitions, 3545 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:20,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:20,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:20,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:20,420 INFO L124 PetriNetUnfolderBase]: 715/1231 cut-off events. [2024-06-28 03:17:20,420 INFO L125 PetriNetUnfolderBase]: For 111421/111421 co-relation queries the response was YES. [2024-06-28 03:17:20,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9933 conditions, 1231 events. 715/1231 cut-off events. For 111421/111421 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5966 event pairs, 125 based on Foata normal form. 1/1232 useless extension candidates. Maximal degree in co-relation 9822. Up to 1136 conditions per place. [2024-06-28 03:17:20,431 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 278 selfloop transitions, 38 changer transitions 0/318 dead transitions. [2024-06-28 03:17:20,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 318 transitions, 4243 flow [2024-06-28 03:17:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:17:20,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-28 03:17:20,432 INFO L175 Difference]: Start difference. First operand has 282 places, 298 transitions, 3545 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:17:20,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 318 transitions, 4243 flow [2024-06-28 03:17:20,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 318 transitions, 4160 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:20,733 INFO L231 Difference]: Finished difference. Result has 284 places, 300 transitions, 3565 flow [2024-06-28 03:17:20,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3462, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3565, PETRI_PLACES=284, PETRI_TRANSITIONS=300} [2024-06-28 03:17:20,734 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 252 predicate places. [2024-06-28 03:17:20,734 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 300 transitions, 3565 flow [2024-06-28 03:17:20,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:20,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:20,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:20,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:17:20,734 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:20,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:20,735 INFO L85 PathProgramCache]: Analyzing trace with hash -831022110, now seen corresponding path program 3 times [2024-06-28 03:17:20,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:20,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935854557] [2024-06-28 03:17:20,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:20,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:21,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:21,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935854557] [2024-06-28 03:17:21,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935854557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:21,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:21,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:21,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440177730] [2024-06-28 03:17:21,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:21,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:21,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:21,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 300 transitions, 3565 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:21,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:21,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:21,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:21,912 INFO L124 PetriNetUnfolderBase]: 723/1245 cut-off events. [2024-06-28 03:17:21,913 INFO L125 PetriNetUnfolderBase]: For 117009/117009 co-relation queries the response was YES. [2024-06-28 03:17:21,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10128 conditions, 1245 events. 723/1245 cut-off events. For 117009/117009 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6053 event pairs, 97 based on Foata normal form. 1/1246 useless extension candidates. Maximal degree in co-relation 10016. Up to 866 conditions per place. [2024-06-28 03:17:21,925 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 210 selfloop transitions, 113 changer transitions 0/325 dead transitions. [2024-06-28 03:17:21,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 325 transitions, 4603 flow [2024-06-28 03:17:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:17:21,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-28 03:17:21,926 INFO L175 Difference]: Start difference. First operand has 284 places, 300 transitions, 3565 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:17:21,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 325 transitions, 4603 flow [2024-06-28 03:17:22,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 325 transitions, 4520 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:22,262 INFO L231 Difference]: Finished difference. Result has 286 places, 306 transitions, 3789 flow [2024-06-28 03:17:22,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3482, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3789, PETRI_PLACES=286, PETRI_TRANSITIONS=306} [2024-06-28 03:17:22,263 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-28 03:17:22,263 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 306 transitions, 3789 flow [2024-06-28 03:17:22,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:22,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:22,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:22,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:17:22,263 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:22,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:22,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1756278513, now seen corresponding path program 2 times [2024-06-28 03:17:22,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:22,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664708600] [2024-06-28 03:17:22,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:22,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:22,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664708600] [2024-06-28 03:17:22,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664708600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:22,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:22,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:22,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985113436] [2024-06-28 03:17:22,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:22,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:22,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:22,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:22,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:22,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:22,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 306 transitions, 3789 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:22,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:22,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:22,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:23,479 INFO L124 PetriNetUnfolderBase]: 717/1235 cut-off events. [2024-06-28 03:17:23,479 INFO L125 PetriNetUnfolderBase]: For 118421/118421 co-relation queries the response was YES. [2024-06-28 03:17:23,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10109 conditions, 1235 events. 717/1235 cut-off events. For 118421/118421 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5985 event pairs, 96 based on Foata normal form. 3/1238 useless extension candidates. Maximal degree in co-relation 9996. Up to 862 conditions per place. [2024-06-28 03:17:23,490 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 222 selfloop transitions, 107 changer transitions 0/331 dead transitions. [2024-06-28 03:17:23,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 331 transitions, 4688 flow [2024-06-28 03:17:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:17:23,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-28 03:17:23,490 INFO L175 Difference]: Start difference. First operand has 286 places, 306 transitions, 3789 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:17:23,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 331 transitions, 4688 flow [2024-06-28 03:17:23,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 331 transitions, 4570 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:23,803 INFO L231 Difference]: Finished difference. Result has 293 places, 311 transitions, 4068 flow [2024-06-28 03:17:23,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3671, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4068, PETRI_PLACES=293, PETRI_TRANSITIONS=311} [2024-06-28 03:17:23,803 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-28 03:17:23,804 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 311 transitions, 4068 flow [2024-06-28 03:17:23,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:23,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:23,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:23,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:17:23,804 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:23,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:23,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1756284310, now seen corresponding path program 4 times [2024-06-28 03:17:23,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:23,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258962208] [2024-06-28 03:17:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:23,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:24,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:24,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258962208] [2024-06-28 03:17:24,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258962208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:24,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:24,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:24,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176110801] [2024-06-28 03:17:24,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:24,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:24,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:24,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:24,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:24,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:24,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 311 transitions, 4068 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:24,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:24,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:24,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:25,058 INFO L124 PetriNetUnfolderBase]: 715/1233 cut-off events. [2024-06-28 03:17:25,058 INFO L125 PetriNetUnfolderBase]: For 115053/115053 co-relation queries the response was YES. [2024-06-28 03:17:25,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10474 conditions, 1233 events. 715/1233 cut-off events. For 115053/115053 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5961 event pairs, 90 based on Foata normal form. 1/1234 useless extension candidates. Maximal degree in co-relation 10357. Up to 855 conditions per place. [2024-06-28 03:17:25,069 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 216 selfloop transitions, 111 changer transitions 0/329 dead transitions. [2024-06-28 03:17:25,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 329 transitions, 4908 flow [2024-06-28 03:17:25,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:17:25,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-28 03:17:25,070 INFO L175 Difference]: Start difference. First operand has 293 places, 311 transitions, 4068 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:17:25,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 329 transitions, 4908 flow [2024-06-28 03:17:25,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 329 transitions, 4733 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:25,417 INFO L231 Difference]: Finished difference. Result has 295 places, 311 transitions, 4120 flow [2024-06-28 03:17:25,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3893, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4120, PETRI_PLACES=295, PETRI_TRANSITIONS=311} [2024-06-28 03:17:25,418 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 263 predicate places. [2024-06-28 03:17:25,418 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 311 transitions, 4120 flow [2024-06-28 03:17:25,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:25,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:25,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:25,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:17:25,418 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:25,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:25,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1756284465, now seen corresponding path program 3 times [2024-06-28 03:17:25,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:25,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653774585] [2024-06-28 03:17:25,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:25,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:26,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:26,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653774585] [2024-06-28 03:17:26,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653774585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:26,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:26,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:26,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917645361] [2024-06-28 03:17:26,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:26,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:26,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:26,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:26,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:26,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:17:26,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 311 transitions, 4120 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:26,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:26,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:17:26,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:26,865 INFO L124 PetriNetUnfolderBase]: 691/1210 cut-off events. [2024-06-28 03:17:26,866 INFO L125 PetriNetUnfolderBase]: For 121749/121750 co-relation queries the response was YES. [2024-06-28 03:17:26,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10406 conditions, 1210 events. 691/1210 cut-off events. For 121749/121750 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6008 event pairs, 92 based on Foata normal form. 1/1207 useless extension candidates. Maximal degree in co-relation 10289. Up to 923 conditions per place. [2024-06-28 03:17:26,878 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 202 selfloop transitions, 84 changer transitions 0/330 dead transitions. [2024-06-28 03:17:26,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 330 transitions, 4760 flow [2024-06-28 03:17:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:17:26,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 03:17:26,878 INFO L175 Difference]: Start difference. First operand has 295 places, 311 transitions, 4120 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:17:26,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 330 transitions, 4760 flow [2024-06-28 03:17:27,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 330 transitions, 4519 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:17:27,218 INFO L231 Difference]: Finished difference. Result has 296 places, 313 transitions, 4080 flow [2024-06-28 03:17:27,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4080, PETRI_PLACES=296, PETRI_TRANSITIONS=313} [2024-06-28 03:17:27,219 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 264 predicate places. [2024-06-28 03:17:27,219 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 313 transitions, 4080 flow [2024-06-28 03:17:27,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:27,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:27,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:27,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:17:27,219 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:27,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:27,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1989036775, now seen corresponding path program 1 times [2024-06-28 03:17:27,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:27,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214480878] [2024-06-28 03:17:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:27,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:27,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:27,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214480878] [2024-06-28 03:17:27,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214480878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:27,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:27,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:17:27,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364821262] [2024-06-28 03:17:27,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:27,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:17:27,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:17:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:17:27,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:27,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 313 transitions, 4080 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:27,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:27,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:27,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:28,597 INFO L124 PetriNetUnfolderBase]: 757/1301 cut-off events. [2024-06-28 03:17:28,597 INFO L125 PetriNetUnfolderBase]: For 141884/141884 co-relation queries the response was YES. [2024-06-28 03:17:28,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11243 conditions, 1301 events. 757/1301 cut-off events. For 141884/141884 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6371 event pairs, 94 based on Foata normal form. 3/1304 useless extension candidates. Maximal degree in co-relation 11125. Up to 717 conditions per place. [2024-06-28 03:17:28,609 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 234 selfloop transitions, 112 changer transitions 0/348 dead transitions. [2024-06-28 03:17:28,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 348 transitions, 5406 flow [2024-06-28 03:17:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:17:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:17:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-28 03:17:28,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:17:28,610 INFO L175 Difference]: Start difference. First operand has 296 places, 313 transitions, 4080 flow. Second operand 12 states and 162 transitions. [2024-06-28 03:17:28,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 348 transitions, 5406 flow [2024-06-28 03:17:29,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 348 transitions, 5221 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:29,013 INFO L231 Difference]: Finished difference. Result has 300 places, 321 transitions, 4290 flow [2024-06-28 03:17:29,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3895, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4290, PETRI_PLACES=300, PETRI_TRANSITIONS=321} [2024-06-28 03:17:29,013 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2024-06-28 03:17:29,013 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 321 transitions, 4290 flow [2024-06-28 03:17:29,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:29,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:29,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:29,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:17:29,014 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:29,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:29,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1120829585, now seen corresponding path program 4 times [2024-06-28 03:17:29,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:29,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135158875] [2024-06-28 03:17:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:29,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:29,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:29,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135158875] [2024-06-28 03:17:29,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135158875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:29,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:29,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:29,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920999195] [2024-06-28 03:17:29,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:29,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:29,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:29,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:29,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:29,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:17:29,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 321 transitions, 4290 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:29,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:29,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:17:29,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:30,598 INFO L124 PetriNetUnfolderBase]: 737/1282 cut-off events. [2024-06-28 03:17:30,598 INFO L125 PetriNetUnfolderBase]: For 145852/145853 co-relation queries the response was YES. [2024-06-28 03:17:30,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11506 conditions, 1282 events. 737/1282 cut-off events. For 145852/145853 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6362 event pairs, 130 based on Foata normal form. 1/1281 useless extension candidates. Maximal degree in co-relation 11386. Up to 1091 conditions per place. [2024-06-28 03:17:30,610 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 261 selfloop transitions, 39 changer transitions 0/344 dead transitions. [2024-06-28 03:17:30,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 344 transitions, 4984 flow [2024-06-28 03:17:30,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:17:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:17:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:17:30,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:17:30,611 INFO L175 Difference]: Start difference. First operand has 300 places, 321 transitions, 4290 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:17:30,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 344 transitions, 4984 flow [2024-06-28 03:17:31,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 344 transitions, 4842 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:31,013 INFO L231 Difference]: Finished difference. Result has 307 places, 325 transitions, 4285 flow [2024-06-28 03:17:31,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4148, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4285, PETRI_PLACES=307, PETRI_TRANSITIONS=325} [2024-06-28 03:17:31,013 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 275 predicate places. [2024-06-28 03:17:31,013 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 325 transitions, 4285 flow [2024-06-28 03:17:31,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:31,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:31,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:31,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:17:31,014 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:31,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:31,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1441115606, now seen corresponding path program 5 times [2024-06-28 03:17:31,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:31,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348691745] [2024-06-28 03:17:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:31,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:31,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:31,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348691745] [2024-06-28 03:17:31,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348691745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:31,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:31,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:31,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729575320] [2024-06-28 03:17:31,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:31,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:31,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:31,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:31,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:31,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:31,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 325 transitions, 4285 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:31,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:31,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:31,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:32,222 INFO L124 PetriNetUnfolderBase]: 767/1314 cut-off events. [2024-06-28 03:17:32,222 INFO L125 PetriNetUnfolderBase]: For 145072/145072 co-relation queries the response was YES. [2024-06-28 03:17:32,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11633 conditions, 1314 events. 767/1314 cut-off events. For 145072/145072 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6431 event pairs, 139 based on Foata normal form. 1/1315 useless extension candidates. Maximal degree in co-relation 11510. Up to 1222 conditions per place. [2024-06-28 03:17:32,235 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 305 selfloop transitions, 37 changer transitions 0/344 dead transitions. [2024-06-28 03:17:32,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 344 transitions, 5044 flow [2024-06-28 03:17:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:32,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:17:32,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-28 03:17:32,237 INFO L175 Difference]: Start difference. First operand has 307 places, 325 transitions, 4285 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:17:32,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 344 transitions, 5044 flow [2024-06-28 03:17:32,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 344 transitions, 4955 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:32,628 INFO L231 Difference]: Finished difference. Result has 309 places, 327 transitions, 4308 flow [2024-06-28 03:17:32,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4196, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4308, PETRI_PLACES=309, PETRI_TRANSITIONS=327} [2024-06-28 03:17:32,629 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-28 03:17:32,629 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 327 transitions, 4308 flow [2024-06-28 03:17:32,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:32,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:32,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:32,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:17:32,629 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:32,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1555930616, now seen corresponding path program 6 times [2024-06-28 03:17:32,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:32,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600080370] [2024-06-28 03:17:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:32,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:33,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:33,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600080370] [2024-06-28 03:17:33,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600080370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:33,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:33,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:33,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590164597] [2024-06-28 03:17:33,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:33,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:33,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:33,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:33,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:33,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:33,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 327 transitions, 4308 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:33,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:33,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:33,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:33,892 INFO L124 PetriNetUnfolderBase]: 780/1335 cut-off events. [2024-06-28 03:17:33,892 INFO L125 PetriNetUnfolderBase]: For 154411/154411 co-relation queries the response was YES. [2024-06-28 03:17:33,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11965 conditions, 1335 events. 780/1335 cut-off events. For 154411/154411 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6533 event pairs, 84 based on Foata normal form. 1/1336 useless extension candidates. Maximal degree in co-relation 11841. Up to 955 conditions per place. [2024-06-28 03:17:33,905 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 246 selfloop transitions, 104 changer transitions 0/352 dead transitions. [2024-06-28 03:17:33,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 352 transitions, 5587 flow [2024-06-28 03:17:33,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:17:33,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-28 03:17:33,906 INFO L175 Difference]: Start difference. First operand has 309 places, 327 transitions, 4308 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:17:33,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 352 transitions, 5587 flow [2024-06-28 03:17:34,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 352 transitions, 5502 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:34,371 INFO L231 Difference]: Finished difference. Result has 311 places, 333 transitions, 4517 flow [2024-06-28 03:17:34,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4223, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4517, PETRI_PLACES=311, PETRI_TRANSITIONS=333} [2024-06-28 03:17:34,372 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-28 03:17:34,372 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 333 transitions, 4517 flow [2024-06-28 03:17:34,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:34,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:34,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:34,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:17:34,372 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:34,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:34,372 INFO L85 PathProgramCache]: Analyzing trace with hash 984828044, now seen corresponding path program 7 times [2024-06-28 03:17:34,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:34,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467526810] [2024-06-28 03:17:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:34,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:35,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:35,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467526810] [2024-06-28 03:17:35,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467526810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:35,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:35,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:35,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551034859] [2024-06-28 03:17:35,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:35,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:35,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:35,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:35,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:35,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:35,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 333 transitions, 4517 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:35,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:35,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:35,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:35,686 INFO L124 PetriNetUnfolderBase]: 778/1332 cut-off events. [2024-06-28 03:17:35,686 INFO L125 PetriNetUnfolderBase]: For 156189/156189 co-relation queries the response was YES. [2024-06-28 03:17:35,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12055 conditions, 1332 events. 778/1332 cut-off events. For 156189/156189 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6524 event pairs, 84 based on Foata normal form. 1/1333 useless extension candidates. Maximal degree in co-relation 11930. Up to 953 conditions per place. [2024-06-28 03:17:35,700 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 246 selfloop transitions, 103 changer transitions 0/351 dead transitions. [2024-06-28 03:17:35,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 351 transitions, 5565 flow [2024-06-28 03:17:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:17:35,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-28 03:17:35,701 INFO L175 Difference]: Start difference. First operand has 311 places, 333 transitions, 4517 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:17:35,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 351 transitions, 5565 flow [2024-06-28 03:17:36,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 351 transitions, 5408 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:36,192 INFO L231 Difference]: Finished difference. Result has 316 places, 333 transitions, 4571 flow [2024-06-28 03:17:36,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4571, PETRI_PLACES=316, PETRI_TRANSITIONS=333} [2024-06-28 03:17:36,193 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-28 03:17:36,193 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 333 transitions, 4571 flow [2024-06-28 03:17:36,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:36,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:36,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:36,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:17:36,193 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:36,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:36,193 INFO L85 PathProgramCache]: Analyzing trace with hash 984827889, now seen corresponding path program 5 times [2024-06-28 03:17:36,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:36,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140307612] [2024-06-28 03:17:36,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:36,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:37,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:37,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140307612] [2024-06-28 03:17:37,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140307612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:37,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:37,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:37,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531249018] [2024-06-28 03:17:37,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:37,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:37,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:37,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:37,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:17:37,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 333 transitions, 4571 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:37,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:37,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:17:37,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:37,831 INFO L124 PetriNetUnfolderBase]: 752/1308 cut-off events. [2024-06-28 03:17:37,831 INFO L125 PetriNetUnfolderBase]: For 161629/161629 co-relation queries the response was YES. [2024-06-28 03:17:37,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11988 conditions, 1308 events. 752/1308 cut-off events. For 161629/161629 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6535 event pairs, 74 based on Foata normal form. 1/1309 useless extension candidates. Maximal degree in co-relation 11862. Up to 1012 conditions per place. [2024-06-28 03:17:37,846 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 226 selfloop transitions, 77 changer transitions 0/351 dead transitions. [2024-06-28 03:17:37,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 351 transitions, 5247 flow [2024-06-28 03:17:37,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:37,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:17:37,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-28 03:17:37,848 INFO L175 Difference]: Start difference. First operand has 316 places, 333 transitions, 4571 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:17:37,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 351 transitions, 5247 flow [2024-06-28 03:17:38,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 351 transitions, 5029 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:17:38,376 INFO L231 Difference]: Finished difference. Result has 317 places, 335 transitions, 4544 flow [2024-06-28 03:17:38,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4353, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4544, PETRI_PLACES=317, PETRI_TRANSITIONS=335} [2024-06-28 03:17:38,376 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-28 03:17:38,377 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 335 transitions, 4544 flow [2024-06-28 03:17:38,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:38,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:38,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:38,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:17:38,377 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:38,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:38,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2060539490, now seen corresponding path program 8 times [2024-06-28 03:17:38,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:38,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684365310] [2024-06-28 03:17:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:38,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:39,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:39,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684365310] [2024-06-28 03:17:39,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684365310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:39,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:39,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:39,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164147575] [2024-06-28 03:17:39,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:39,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:39,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:39,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:39,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 335 transitions, 4544 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:39,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:39,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:39,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:39,670 INFO L124 PetriNetUnfolderBase]: 789/1351 cut-off events. [2024-06-28 03:17:39,670 INFO L125 PetriNetUnfolderBase]: For 167503/167503 co-relation queries the response was YES. [2024-06-28 03:17:39,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12337 conditions, 1351 events. 789/1351 cut-off events. For 167503/167503 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6624 event pairs, 77 based on Foata normal form. 1/1352 useless extension candidates. Maximal degree in co-relation 12210. Up to 968 conditions per place. [2024-06-28 03:17:39,684 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 245 selfloop transitions, 110 changer transitions 0/357 dead transitions. [2024-06-28 03:17:39,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 357 transitions, 5824 flow [2024-06-28 03:17:39,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:39,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:39,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:17:39,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-28 03:17:39,685 INFO L175 Difference]: Start difference. First operand has 317 places, 335 transitions, 4544 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:17:39,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 357 transitions, 5824 flow [2024-06-28 03:17:40,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 357 transitions, 5649 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:40,227 INFO L231 Difference]: Finished difference. Result has 319 places, 339 transitions, 4652 flow [2024-06-28 03:17:40,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4369, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4652, PETRI_PLACES=319, PETRI_TRANSITIONS=339} [2024-06-28 03:17:40,228 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-28 03:17:40,228 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 339 transitions, 4652 flow [2024-06-28 03:17:40,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:40,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:40,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:40,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:17:40,228 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:40,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:40,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1478930727, now seen corresponding path program 3 times [2024-06-28 03:17:40,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:40,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797380147] [2024-06-28 03:17:40,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:40,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:40,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:40,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797380147] [2024-06-28 03:17:40,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797380147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:40,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:40,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:40,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923765122] [2024-06-28 03:17:40,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:40,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:40,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:40,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:40,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:40,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:40,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 339 transitions, 4652 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:40,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:40,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:40,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:41,532 INFO L124 PetriNetUnfolderBase]: 798/1369 cut-off events. [2024-06-28 03:17:41,532 INFO L125 PetriNetUnfolderBase]: For 178172/178172 co-relation queries the response was YES. [2024-06-28 03:17:41,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12518 conditions, 1369 events. 798/1369 cut-off events. For 178172/178172 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6777 event pairs, 99 based on Foata normal form. 3/1372 useless extension candidates. Maximal degree in co-relation 12390. Up to 962 conditions per place. [2024-06-28 03:17:41,546 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 270 selfloop transitions, 91 changer transitions 0/363 dead transitions. [2024-06-28 03:17:41,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 363 transitions, 5791 flow [2024-06-28 03:17:41,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:41,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:17:41,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 03:17:41,547 INFO L175 Difference]: Start difference. First operand has 319 places, 339 transitions, 4652 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:17:41,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 363 transitions, 5791 flow [2024-06-28 03:17:42,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 363 transitions, 5547 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:42,086 INFO L231 Difference]: Finished difference. Result has 322 places, 342 transitions, 4625 flow [2024-06-28 03:17:42,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4408, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4625, PETRI_PLACES=322, PETRI_TRANSITIONS=342} [2024-06-28 03:17:42,086 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-28 03:17:42,086 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 342 transitions, 4625 flow [2024-06-28 03:17:42,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:42,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:42,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:42,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:17:42,087 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:42,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:42,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1126345787, now seen corresponding path program 4 times [2024-06-28 03:17:42,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:42,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819259883] [2024-06-28 03:17:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:42,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:42,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:42,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819259883] [2024-06-28 03:17:42,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819259883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:42,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:42,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:42,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011007997] [2024-06-28 03:17:42,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:42,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:42,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:42,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:42,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:42,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 342 transitions, 4625 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:42,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:42,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:42,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:43,401 INFO L124 PetriNetUnfolderBase]: 807/1384 cut-off events. [2024-06-28 03:17:43,401 INFO L125 PetriNetUnfolderBase]: For 182375/182375 co-relation queries the response was YES. [2024-06-28 03:17:43,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12633 conditions, 1384 events. 807/1384 cut-off events. For 182375/182375 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6873 event pairs, 99 based on Foata normal form. 3/1387 useless extension candidates. Maximal degree in co-relation 12504. Up to 970 conditions per place. [2024-06-28 03:17:43,416 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 277 selfloop transitions, 89 changer transitions 0/368 dead transitions. [2024-06-28 03:17:43,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 368 transitions, 5797 flow [2024-06-28 03:17:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 03:17:43,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-28 03:17:43,417 INFO L175 Difference]: Start difference. First operand has 322 places, 342 transitions, 4625 flow. Second operand 11 states and 147 transitions. [2024-06-28 03:17:43,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 368 transitions, 5797 flow [2024-06-28 03:17:43,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 368 transitions, 5605 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:43,977 INFO L231 Difference]: Finished difference. Result has 325 places, 345 transitions, 4651 flow [2024-06-28 03:17:43,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4444, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4651, PETRI_PLACES=325, PETRI_TRANSITIONS=345} [2024-06-28 03:17:43,978 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-28 03:17:43,978 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 345 transitions, 4651 flow [2024-06-28 03:17:43,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:43,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:43,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:43,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:17:43,978 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:43,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:43,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1126547380, now seen corresponding path program 9 times [2024-06-28 03:17:43,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:43,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954249518] [2024-06-28 03:17:43,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:43,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:44,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:44,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954249518] [2024-06-28 03:17:44,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954249518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:44,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:44,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:44,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392963685] [2024-06-28 03:17:44,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:44,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:44,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:44,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:44,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:44,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:44,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 345 transitions, 4651 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:44,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:44,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:44,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:45,264 INFO L124 PetriNetUnfolderBase]: 805/1378 cut-off events. [2024-06-28 03:17:45,264 INFO L125 PetriNetUnfolderBase]: For 176897/176897 co-relation queries the response was YES. [2024-06-28 03:17:45,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12554 conditions, 1378 events. 805/1378 cut-off events. For 176897/176897 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6818 event pairs, 79 based on Foata normal form. 1/1379 useless extension candidates. Maximal degree in co-relation 12424. Up to 996 conditions per place. [2024-06-28 03:17:45,278 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 243 selfloop transitions, 117 changer transitions 0/362 dead transitions. [2024-06-28 03:17:45,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 362 transitions, 5737 flow [2024-06-28 03:17:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 03:17:45,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-28 03:17:45,280 INFO L175 Difference]: Start difference. First operand has 325 places, 345 transitions, 4651 flow. Second operand 11 states and 139 transitions. [2024-06-28 03:17:45,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 362 transitions, 5737 flow [2024-06-28 03:17:45,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 362 transitions, 5545 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:45,919 INFO L231 Difference]: Finished difference. Result has 327 places, 345 transitions, 4698 flow [2024-06-28 03:17:45,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4459, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4698, PETRI_PLACES=327, PETRI_TRANSITIONS=345} [2024-06-28 03:17:45,919 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-28 03:17:45,919 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 345 transitions, 4698 flow [2024-06-28 03:17:45,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:45,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:45,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:45,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:17:45,920 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:45,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:45,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1126339990, now seen corresponding path program 10 times [2024-06-28 03:17:45,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:45,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902518417] [2024-06-28 03:17:45,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:45,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902518417] [2024-06-28 03:17:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902518417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:46,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352427009] [2024-06-28 03:17:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:46,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:46,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:46,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:46,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:46,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 345 transitions, 4698 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:46,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:46,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:46,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:47,233 INFO L124 PetriNetUnfolderBase]: 803/1375 cut-off events. [2024-06-28 03:17:47,233 INFO L125 PetriNetUnfolderBase]: For 177837/177837 co-relation queries the response was YES. [2024-06-28 03:17:47,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12508 conditions, 1375 events. 803/1375 cut-off events. For 177837/177837 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6778 event pairs, 79 based on Foata normal form. 1/1376 useless extension candidates. Maximal degree in co-relation 12377. Up to 994 conditions per place. [2024-06-28 03:17:47,246 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 248 selfloop transitions, 111 changer transitions 0/361 dead transitions. [2024-06-28 03:17:47,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 361 transitions, 5620 flow [2024-06-28 03:17:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:47,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 03:17:47,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-28 03:17:47,247 INFO L175 Difference]: Start difference. First operand has 327 places, 345 transitions, 4698 flow. Second operand 11 states and 139 transitions. [2024-06-28 03:17:47,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 361 transitions, 5620 flow [2024-06-28 03:17:47,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 361 transitions, 5369 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:17:47,930 INFO L231 Difference]: Finished difference. Result has 328 places, 345 transitions, 4674 flow [2024-06-28 03:17:47,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4447, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4674, PETRI_PLACES=328, PETRI_TRANSITIONS=345} [2024-06-28 03:17:47,931 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2024-06-28 03:17:47,931 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 345 transitions, 4674 flow [2024-06-28 03:17:47,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:47,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:47,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:47,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:17:47,931 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:47,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:47,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1478923287, now seen corresponding path program 5 times [2024-06-28 03:17:47,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:47,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768783797] [2024-06-28 03:17:47,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:47,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:48,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:48,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768783797] [2024-06-28 03:17:48,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768783797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:48,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:48,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:48,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610514675] [2024-06-28 03:17:48,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:48,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:48,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:48,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:48,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:48,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:48,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 345 transitions, 4674 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:48,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:48,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:48,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:49,259 INFO L124 PetriNetUnfolderBase]: 797/1369 cut-off events. [2024-06-28 03:17:49,259 INFO L125 PetriNetUnfolderBase]: For 178456/178456 co-relation queries the response was YES. [2024-06-28 03:17:49,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12259 conditions, 1369 events. 797/1369 cut-off events. For 178456/178456 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6800 event pairs, 97 based on Foata normal form. 3/1372 useless extension candidates. Maximal degree in co-relation 12127. Up to 960 conditions per place. [2024-06-28 03:17:49,270 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 274 selfloop transitions, 91 changer transitions 0/367 dead transitions. [2024-06-28 03:17:49,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 367 transitions, 5654 flow [2024-06-28 03:17:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:49,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:17:49,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-28 03:17:49,271 INFO L175 Difference]: Start difference. First operand has 328 places, 345 transitions, 4674 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:17:49,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 367 transitions, 5654 flow [2024-06-28 03:17:49,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 367 transitions, 5423 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:17:49,915 INFO L231 Difference]: Finished difference. Result has 329 places, 345 transitions, 4631 flow [2024-06-28 03:17:49,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4443, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4631, PETRI_PLACES=329, PETRI_TRANSITIONS=345} [2024-06-28 03:17:49,916 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-28 03:17:49,916 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 345 transitions, 4631 flow [2024-06-28 03:17:49,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:49,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:49,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:49,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:17:49,916 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:49,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:49,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1126339835, now seen corresponding path program 6 times [2024-06-28 03:17:49,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:49,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318260172] [2024-06-28 03:17:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:49,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:50,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:50,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318260172] [2024-06-28 03:17:50,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318260172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:50,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:50,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:50,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192482937] [2024-06-28 03:17:50,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:50,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:50,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:50,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:50,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:50,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:17:50,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 345 transitions, 4631 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:50,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:50,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:17:50,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:51,491 INFO L124 PetriNetUnfolderBase]: 770/1341 cut-off events. [2024-06-28 03:17:51,491 INFO L125 PetriNetUnfolderBase]: For 176644/176644 co-relation queries the response was YES. [2024-06-28 03:17:51,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12173 conditions, 1341 events. 770/1341 cut-off events. For 176644/176644 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6736 event pairs, 69 based on Foata normal form. 1/1342 useless extension candidates. Maximal degree in co-relation 12040. Up to 1041 conditions per place. [2024-06-28 03:17:51,505 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 232 selfloop transitions, 80 changer transitions 0/362 dead transitions. [2024-06-28 03:17:51,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 362 transitions, 5325 flow [2024-06-28 03:17:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:51,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:17:51,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-28 03:17:51,506 INFO L175 Difference]: Start difference. First operand has 329 places, 345 transitions, 4631 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:17:51,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 362 transitions, 5325 flow [2024-06-28 03:17:52,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 362 transitions, 5115 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 03:17:52,132 INFO L231 Difference]: Finished difference. Result has 329 places, 347 transitions, 4622 flow [2024-06-28 03:17:52,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4421, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4622, PETRI_PLACES=329, PETRI_TRANSITIONS=347} [2024-06-28 03:17:52,133 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-28 03:17:52,133 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 347 transitions, 4622 flow [2024-06-28 03:17:52,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:52,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:52,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:52,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:17:52,133 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:52,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:52,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1027861523, now seen corresponding path program 7 times [2024-06-28 03:17:52,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:52,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269567221] [2024-06-28 03:17:52,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:52,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:53,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:53,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:53,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269567221] [2024-06-28 03:17:53,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269567221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:53,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:53,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:53,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347243396] [2024-06-28 03:17:53,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:53,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:53,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:53,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:53,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:53,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:17:53,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 347 transitions, 4622 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:53,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:53,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:17:53,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:53,813 INFO L124 PetriNetUnfolderBase]: 777/1352 cut-off events. [2024-06-28 03:17:53,813 INFO L125 PetriNetUnfolderBase]: For 180073/180073 co-relation queries the response was YES. [2024-06-28 03:17:53,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12240 conditions, 1352 events. 777/1352 cut-off events. For 180073/180073 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6817 event pairs, 69 based on Foata normal form. 1/1353 useless extension candidates. Maximal degree in co-relation 12106. Up to 1148 conditions per place. [2024-06-28 03:17:53,828 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 281 selfloop transitions, 38 changer transitions 0/369 dead transitions. [2024-06-28 03:17:53,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 369 transitions, 5360 flow [2024-06-28 03:17:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:17:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:17:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:17:53,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:17:53,829 INFO L175 Difference]: Start difference. First operand has 329 places, 347 transitions, 4622 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:17:53,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 369 transitions, 5360 flow [2024-06-28 03:17:54,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 369 transitions, 5175 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:54,499 INFO L231 Difference]: Finished difference. Result has 333 places, 351 transitions, 4580 flow [2024-06-28 03:17:54,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4580, PETRI_PLACES=333, PETRI_TRANSITIONS=351} [2024-06-28 03:17:54,499 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-28 03:17:54,499 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 351 transitions, 4580 flow [2024-06-28 03:17:54,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:54,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:54,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:54,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:17:54,500 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:54,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash -885668088, now seen corresponding path program 11 times [2024-06-28 03:17:54,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:54,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263153900] [2024-06-28 03:17:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:54,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:55,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:55,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263153900] [2024-06-28 03:17:55,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263153900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:55,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:55,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:55,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161360745] [2024-06-28 03:17:55,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:55,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:55,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:55,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:55,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:55,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:55,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 351 transitions, 4580 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:55,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:55,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:55,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:55,813 INFO L124 PetriNetUnfolderBase]: 810/1387 cut-off events. [2024-06-28 03:17:55,813 INFO L125 PetriNetUnfolderBase]: For 183123/183123 co-relation queries the response was YES. [2024-06-28 03:17:55,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12417 conditions, 1387 events. 810/1387 cut-off events. For 183123/183123 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6897 event pairs, 71 based on Foata normal form. 1/1388 useless extension candidates. Maximal degree in co-relation 12281. Up to 1295 conditions per place. [2024-06-28 03:17:55,827 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 331 selfloop transitions, 36 changer transitions 0/369 dead transitions. [2024-06-28 03:17:55,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 369 transitions, 5393 flow [2024-06-28 03:17:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:17:55,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-28 03:17:55,828 INFO L175 Difference]: Start difference. First operand has 333 places, 351 transitions, 4580 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:17:55,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 369 transitions, 5393 flow [2024-06-28 03:17:56,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 369 transitions, 5298 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:56,512 INFO L231 Difference]: Finished difference. Result has 335 places, 353 transitions, 4601 flow [2024-06-28 03:17:56,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4485, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4601, PETRI_PLACES=335, PETRI_TRANSITIONS=353} [2024-06-28 03:17:56,513 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 303 predicate places. [2024-06-28 03:17:56,513 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 353 transitions, 4601 flow [2024-06-28 03:17:56,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:56,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:56,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:56,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:17:56,513 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:56,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:56,514 INFO L85 PathProgramCache]: Analyzing trace with hash -100980313, now seen corresponding path program 8 times [2024-06-28 03:17:56,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:56,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572917102] [2024-06-28 03:17:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:56,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:57,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572917102] [2024-06-28 03:17:57,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572917102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:57,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:57,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:57,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885146700] [2024-06-28 03:17:57,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:57,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:57,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:57,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:57,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:57,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:17:57,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 353 transitions, 4601 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:57,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:57,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:17:57,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:58,236 INFO L124 PetriNetUnfolderBase]: 783/1362 cut-off events. [2024-06-28 03:17:58,236 INFO L125 PetriNetUnfolderBase]: For 188507/188507 co-relation queries the response was YES. [2024-06-28 03:17:58,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12314 conditions, 1362 events. 783/1362 cut-off events. For 188507/188507 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6900 event pairs, 81 based on Foata normal form. 1/1363 useless extension candidates. Maximal degree in co-relation 12177. Up to 1061 conditions per place. [2024-06-28 03:17:58,249 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 244 selfloop transitions, 75 changer transitions 0/370 dead transitions. [2024-06-28 03:17:58,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 370 transitions, 5315 flow [2024-06-28 03:17:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:17:58,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-28 03:17:58,249 INFO L175 Difference]: Start difference. First operand has 335 places, 353 transitions, 4601 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:17:58,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 370 transitions, 5315 flow [2024-06-28 03:17:58,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 370 transitions, 5228 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:58,919 INFO L231 Difference]: Finished difference. Result has 337 places, 355 transitions, 4709 flow [2024-06-28 03:17:58,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4514, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4709, PETRI_PLACES=337, PETRI_TRANSITIONS=355} [2024-06-28 03:17:58,920 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 305 predicate places. [2024-06-28 03:17:58,920 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 355 transitions, 4709 flow [2024-06-28 03:17:58,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:58,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:58,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:58,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:17:58,920 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:17:58,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:58,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1024052088, now seen corresponding path program 12 times [2024-06-28 03:17:58,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:58,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564444611] [2024-06-28 03:17:58,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:58,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:59,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:59,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564444611] [2024-06-28 03:17:59,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564444611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:59,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:59,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:59,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934654618] [2024-06-28 03:17:59,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:59,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:59,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:59,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:59,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:59,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:17:59,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 355 transitions, 4709 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:59,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:59,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:17:59,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:00,322 INFO L124 PetriNetUnfolderBase]: 826/1413 cut-off events. [2024-06-28 03:18:00,322 INFO L125 PetriNetUnfolderBase]: For 199871/199871 co-relation queries the response was YES. [2024-06-28 03:18:00,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12948 conditions, 1413 events. 826/1413 cut-off events. For 199871/199871 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7084 event pairs, 100 based on Foata normal form. 1/1414 useless extension candidates. Maximal degree in co-relation 12810. Up to 1027 conditions per place. [2024-06-28 03:18:00,339 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 265 selfloop transitions, 112 changer transitions 0/379 dead transitions. [2024-06-28 03:18:00,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 379 transitions, 6124 flow [2024-06-28 03:18:00,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:18:00,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-28 03:18:00,340 INFO L175 Difference]: Start difference. First operand has 337 places, 355 transitions, 4709 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:18:00,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 379 transitions, 6124 flow [2024-06-28 03:18:01,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 379 transitions, 5945 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:18:01,162 INFO L231 Difference]: Finished difference. Result has 339 places, 361 transitions, 4846 flow [2024-06-28 03:18:01,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4530, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4846, PETRI_PLACES=339, PETRI_TRANSITIONS=361} [2024-06-28 03:18:01,163 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 307 predicate places. [2024-06-28 03:18:01,163 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 361 transitions, 4846 flow [2024-06-28 03:18:01,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:01,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:01,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:01,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:18:01,163 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:01,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:01,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1024046291, now seen corresponding path program 6 times [2024-06-28 03:18:01,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:01,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487246401] [2024-06-28 03:18:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:01,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:01,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:01,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487246401] [2024-06-28 03:18:01,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487246401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:01,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:01,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:01,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339670286] [2024-06-28 03:18:01,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:01,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:01,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:01,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:01,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:01,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:01,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 361 transitions, 4846 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:01,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:01,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:01,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:02,544 INFO L124 PetriNetUnfolderBase]: 850/1453 cut-off events. [2024-06-28 03:18:02,544 INFO L125 PetriNetUnfolderBase]: For 224452/224452 co-relation queries the response was YES. [2024-06-28 03:18:02,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13520 conditions, 1453 events. 850/1453 cut-off events. For 224452/224452 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7303 event pairs, 100 based on Foata normal form. 3/1456 useless extension candidates. Maximal degree in co-relation 13381. Up to 978 conditions per place. [2024-06-28 03:18:02,560 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 292 selfloop transitions, 97 changer transitions 0/391 dead transitions. [2024-06-28 03:18:02,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 391 transitions, 6144 flow [2024-06-28 03:18:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 03:18:02,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597796143250687 [2024-06-28 03:18:02,561 INFO L175 Difference]: Start difference. First operand has 339 places, 361 transitions, 4846 flow. Second operand 11 states and 151 transitions. [2024-06-28 03:18:02,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 391 transitions, 6144 flow [2024-06-28 03:18:03,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 391 transitions, 5963 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:03,386 INFO L231 Difference]: Finished difference. Result has 345 places, 368 transitions, 4978 flow [2024-06-28 03:18:03,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4665, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4978, PETRI_PLACES=345, PETRI_TRANSITIONS=368} [2024-06-28 03:18:03,386 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 313 predicate places. [2024-06-28 03:18:03,386 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 368 transitions, 4978 flow [2024-06-28 03:18:03,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:03,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:03,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:03,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:18:03,387 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:03,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:03,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1024046508, now seen corresponding path program 13 times [2024-06-28 03:18:03,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:03,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978999215] [2024-06-28 03:18:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:03,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:04,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:04,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978999215] [2024-06-28 03:18:04,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978999215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:04,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:04,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:04,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27362988] [2024-06-28 03:18:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:04,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:04,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:04,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:04,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 368 transitions, 4978 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:04,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:04,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:04,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:04,733 INFO L124 PetriNetUnfolderBase]: 848/1449 cut-off events. [2024-06-28 03:18:04,733 INFO L125 PetriNetUnfolderBase]: For 217945/217945 co-relation queries the response was YES. [2024-06-28 03:18:04,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13607 conditions, 1449 events. 848/1449 cut-off events. For 217945/217945 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7292 event pairs, 102 based on Foata normal form. 1/1450 useless extension candidates. Maximal degree in co-relation 13466. Up to 1064 conditions per place. [2024-06-28 03:18:04,747 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 270 selfloop transitions, 113 changer transitions 0/385 dead transitions. [2024-06-28 03:18:04,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 385 transitions, 6148 flow [2024-06-28 03:18:04,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:18:04,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 03:18:04,748 INFO L175 Difference]: Start difference. First operand has 345 places, 368 transitions, 4978 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:18:04,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 385 transitions, 6148 flow [2024-06-28 03:18:05,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 385 transitions, 6047 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:05,573 INFO L231 Difference]: Finished difference. Result has 350 places, 368 transitions, 5108 flow [2024-06-28 03:18:05,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4877, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5108, PETRI_PLACES=350, PETRI_TRANSITIONS=368} [2024-06-28 03:18:05,573 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 318 predicate places. [2024-06-28 03:18:05,573 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 368 transitions, 5108 flow [2024-06-28 03:18:05,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:05,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:05,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:05,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:18:05,574 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:05,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:05,574 INFO L85 PathProgramCache]: Analyzing trace with hash -879954168, now seen corresponding path program 14 times [2024-06-28 03:18:05,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:05,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904645186] [2024-06-28 03:18:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:05,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:06,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:06,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904645186] [2024-06-28 03:18:06,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904645186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:06,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:06,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:06,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468704294] [2024-06-28 03:18:06,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:06,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:06,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:06,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:06,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:06,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:06,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 368 transitions, 5108 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:06,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:06,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:06,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:07,008 INFO L124 PetriNetUnfolderBase]: 856/1462 cut-off events. [2024-06-28 03:18:07,008 INFO L125 PetriNetUnfolderBase]: For 227279/227279 co-relation queries the response was YES. [2024-06-28 03:18:07,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14027 conditions, 1462 events. 856/1462 cut-off events. For 227279/227279 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7353 event pairs, 100 based on Foata normal form. 1/1463 useless extension candidates. Maximal degree in co-relation 13884. Up to 1074 conditions per place. [2024-06-28 03:18:07,023 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 271 selfloop transitions, 116 changer transitions 0/389 dead transitions. [2024-06-28 03:18:07,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 389 transitions, 6540 flow [2024-06-28 03:18:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:07,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:18:07,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-28 03:18:07,024 INFO L175 Difference]: Start difference. First operand has 350 places, 368 transitions, 5108 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:18:07,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 389 transitions, 6540 flow [2024-06-28 03:18:07,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 389 transitions, 6301 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:18:07,857 INFO L231 Difference]: Finished difference. Result has 351 places, 372 transitions, 5176 flow [2024-06-28 03:18:07,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4877, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5176, PETRI_PLACES=351, PETRI_TRANSITIONS=372} [2024-06-28 03:18:07,857 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 319 predicate places. [2024-06-28 03:18:07,858 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 372 transitions, 5176 flow [2024-06-28 03:18:07,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:07,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:07,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:07,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:18:07,858 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:07,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash -527570821, now seen corresponding path program 7 times [2024-06-28 03:18:07,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:07,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290409888] [2024-06-28 03:18:07,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:07,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:08,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:08,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290409888] [2024-06-28 03:18:08,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290409888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:08,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:08,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:08,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289355663] [2024-06-28 03:18:08,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:08,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:08,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:08,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:08,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:08,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 372 transitions, 5176 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:08,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:08,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:08,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:09,325 INFO L124 PetriNetUnfolderBase]: 880/1502 cut-off events. [2024-06-28 03:18:09,325 INFO L125 PetriNetUnfolderBase]: For 253381/253381 co-relation queries the response was YES. [2024-06-28 03:18:09,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14567 conditions, 1502 events. 880/1502 cut-off events. For 253381/253381 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7599 event pairs, 100 based on Foata normal form. 3/1505 useless extension candidates. Maximal degree in co-relation 14423. Up to 1008 conditions per place. [2024-06-28 03:18:09,340 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 304 selfloop transitions, 97 changer transitions 0/403 dead transitions. [2024-06-28 03:18:09,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 403 transitions, 6712 flow [2024-06-28 03:18:09,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:09,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-28 03:18:09,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-28 03:18:09,340 INFO L175 Difference]: Start difference. First operand has 351 places, 372 transitions, 5176 flow. Second operand 11 states and 152 transitions. [2024-06-28 03:18:09,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 403 transitions, 6712 flow [2024-06-28 03:18:10,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 403 transitions, 6536 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:10,205 INFO L231 Difference]: Finished difference. Result has 356 places, 378 transitions, 5275 flow [2024-06-28 03:18:10,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5000, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5275, PETRI_PLACES=356, PETRI_TRANSITIONS=378} [2024-06-28 03:18:10,206 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 324 predicate places. [2024-06-28 03:18:10,206 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 378 transitions, 5275 flow [2024-06-28 03:18:10,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:10,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:10,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:10,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:18:10,206 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:10,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash -880155978, now seen corresponding path program 15 times [2024-06-28 03:18:10,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:10,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747025096] [2024-06-28 03:18:10,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:10,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:10,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:10,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747025096] [2024-06-28 03:18:10,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747025096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:10,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:10,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:10,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469663553] [2024-06-28 03:18:10,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:10,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:10,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:10,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:10,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 378 transitions, 5275 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:10,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:10,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:10,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:11,644 INFO L124 PetriNetUnfolderBase]: 883/1506 cut-off events. [2024-06-28 03:18:11,645 INFO L125 PetriNetUnfolderBase]: For 250621/250621 co-relation queries the response was YES. [2024-06-28 03:18:11,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14687 conditions, 1506 events. 883/1506 cut-off events. For 250621/250621 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7621 event pairs, 102 based on Foata normal form. 1/1507 useless extension candidates. Maximal degree in co-relation 14542. Up to 1117 conditions per place. [2024-06-28 03:18:11,659 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 280 selfloop transitions, 115 changer transitions 0/397 dead transitions. [2024-06-28 03:18:11,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 397 transitions, 6696 flow [2024-06-28 03:18:11,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:11,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:18:11,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-28 03:18:11,660 INFO L175 Difference]: Start difference. First operand has 356 places, 378 transitions, 5275 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:18:11,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 397 transitions, 6696 flow [2024-06-28 03:18:12,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 397 transitions, 6516 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:12,527 INFO L231 Difference]: Finished difference. Result has 360 places, 380 transitions, 5361 flow [2024-06-28 03:18:12,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5095, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5361, PETRI_PLACES=360, PETRI_TRANSITIONS=380} [2024-06-28 03:18:12,528 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 328 predicate places. [2024-06-28 03:18:12,528 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 380 transitions, 5361 flow [2024-06-28 03:18:12,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:12,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:12,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:12,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:18:12,528 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:12,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash -880161713, now seen corresponding path program 9 times [2024-06-28 03:18:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:12,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157343097] [2024-06-28 03:18:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:12,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:13,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157343097] [2024-06-28 03:18:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157343097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:13,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:13,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:13,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380782273] [2024-06-28 03:18:13,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:13,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:13,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:13,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:18:13,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 380 transitions, 5361 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:13,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:13,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:18:13,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:14,227 INFO L124 PetriNetUnfolderBase]: 853/1478 cut-off events. [2024-06-28 03:18:14,227 INFO L125 PetriNetUnfolderBase]: For 257675/257675 co-relation queries the response was YES. [2024-06-28 03:18:14,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14569 conditions, 1478 events. 853/1478 cut-off events. For 257675/257675 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7616 event pairs, 83 based on Foata normal form. 1/1479 useless extension candidates. Maximal degree in co-relation 14423. Up to 1163 conditions per place. [2024-06-28 03:18:14,243 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 265 selfloop transitions, 74 changer transitions 0/396 dead transitions. [2024-06-28 03:18:14,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 396 transitions, 6115 flow [2024-06-28 03:18:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:18:14,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-28 03:18:14,244 INFO L175 Difference]: Start difference. First operand has 360 places, 380 transitions, 5361 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:18:14,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 396 transitions, 6115 flow [2024-06-28 03:18:15,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 396 transitions, 5856 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:18:15,212 INFO L231 Difference]: Finished difference. Result has 362 places, 382 transitions, 5299 flow [2024-06-28 03:18:15,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5102, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5299, PETRI_PLACES=362, PETRI_TRANSITIONS=382} [2024-06-28 03:18:15,212 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 330 predicate places. [2024-06-28 03:18:15,212 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 382 transitions, 5299 flow [2024-06-28 03:18:15,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:15,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:15,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:15,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:18:15,213 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:15,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash -880155761, now seen corresponding path program 8 times [2024-06-28 03:18:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:15,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597585315] [2024-06-28 03:18:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:15,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:15,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:15,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597585315] [2024-06-28 03:18:15,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597585315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:15,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:15,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:15,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57868607] [2024-06-28 03:18:15,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:15,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:15,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:15,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:15,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:15,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:15,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 382 transitions, 5299 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:15,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:15,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:15,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:16,655 INFO L124 PetriNetUnfolderBase]: 895/1527 cut-off events. [2024-06-28 03:18:16,655 INFO L125 PetriNetUnfolderBase]: For 269854/269854 co-relation queries the response was YES. [2024-06-28 03:18:16,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14815 conditions, 1527 events. 895/1527 cut-off events. For 269854/269854 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7760 event pairs, 101 based on Foata normal form. 3/1530 useless extension candidates. Maximal degree in co-relation 14668. Up to 1026 conditions per place. [2024-06-28 03:18:16,672 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 313 selfloop transitions, 97 changer transitions 0/412 dead transitions. [2024-06-28 03:18:16,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 412 transitions, 6845 flow [2024-06-28 03:18:16,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:16,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:16,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-28 03:18:16,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297520661157025 [2024-06-28 03:18:16,673 INFO L175 Difference]: Start difference. First operand has 362 places, 382 transitions, 5299 flow. Second operand 11 states and 156 transitions. [2024-06-28 03:18:16,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 412 transitions, 6845 flow [2024-06-28 03:18:17,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 412 transitions, 6664 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 03:18:17,774 INFO L231 Difference]: Finished difference. Result has 364 places, 385 transitions, 5350 flow [2024-06-28 03:18:17,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5118, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5350, PETRI_PLACES=364, PETRI_TRANSITIONS=385} [2024-06-28 03:18:17,774 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 332 predicate places. [2024-06-28 03:18:17,775 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 385 transitions, 5350 flow [2024-06-28 03:18:17,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:17,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:17,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:17,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:18:17,775 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:17,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash -880161558, now seen corresponding path program 16 times [2024-06-28 03:18:17,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:17,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547291828] [2024-06-28 03:18:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:17,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:18,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:18,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547291828] [2024-06-28 03:18:18,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547291828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:18,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:18,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286599661] [2024-06-28 03:18:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:18,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:18,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:18,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:18,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 385 transitions, 5350 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:18,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:18,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:18,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:19,150 INFO L124 PetriNetUnfolderBase]: 893/1523 cut-off events. [2024-06-28 03:18:19,150 INFO L125 PetriNetUnfolderBase]: For 261707/261707 co-relation queries the response was YES. [2024-06-28 03:18:19,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14841 conditions, 1523 events. 893/1523 cut-off events. For 261707/261707 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7738 event pairs, 105 based on Foata normal form. 1/1524 useless extension candidates. Maximal degree in co-relation 14693. Up to 1135 conditions per place. [2024-06-28 03:18:19,166 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 283 selfloop transitions, 116 changer transitions 0/401 dead transitions. [2024-06-28 03:18:19,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 401 transitions, 6572 flow [2024-06-28 03:18:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:19,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:18:19,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-28 03:18:19,167 INFO L175 Difference]: Start difference. First operand has 364 places, 385 transitions, 5350 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:18:19,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 401 transitions, 6572 flow [2024-06-28 03:18:20,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 401 transitions, 6381 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:20,065 INFO L231 Difference]: Finished difference. Result has 367 places, 385 transitions, 5396 flow [2024-06-28 03:18:20,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5159, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5396, PETRI_PLACES=367, PETRI_TRANSITIONS=385} [2024-06-28 03:18:20,065 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 335 predicate places. [2024-06-28 03:18:20,065 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 385 transitions, 5396 flow [2024-06-28 03:18:20,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:20,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:20,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:20,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:18:20,066 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:20,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:20,066 INFO L85 PathProgramCache]: Analyzing trace with hash -879953951, now seen corresponding path program 9 times [2024-06-28 03:18:20,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:20,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104969441] [2024-06-28 03:18:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:20,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:20,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:20,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104969441] [2024-06-28 03:18:20,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104969441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:20,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:20,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:20,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342640636] [2024-06-28 03:18:20,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:20,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:20,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:20,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:20,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:20,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:20,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 385 transitions, 5396 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:20,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:20,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:20,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:21,490 INFO L124 PetriNetUnfolderBase]: 887/1515 cut-off events. [2024-06-28 03:18:21,490 INFO L125 PetriNetUnfolderBase]: For 262599/262599 co-relation queries the response was YES. [2024-06-28 03:18:21,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14551 conditions, 1515 events. 887/1515 cut-off events. For 262599/262599 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7707 event pairs, 98 based on Foata normal form. 3/1518 useless extension candidates. Maximal degree in co-relation 14402. Up to 1019 conditions per place. [2024-06-28 03:18:21,507 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 311 selfloop transitions, 98 changer transitions 0/411 dead transitions. [2024-06-28 03:18:21,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 411 transitions, 6724 flow [2024-06-28 03:18:21,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-28 03:18:21,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 03:18:21,508 INFO L175 Difference]: Start difference. First operand has 367 places, 385 transitions, 5396 flow. Second operand 11 states and 154 transitions. [2024-06-28 03:18:21,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 411 transitions, 6724 flow [2024-06-28 03:18:22,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 411 transitions, 6481 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:18:22,584 INFO L231 Difference]: Finished difference. Result has 368 places, 385 transitions, 5355 flow [2024-06-28 03:18:22,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5153, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5355, PETRI_PLACES=368, PETRI_TRANSITIONS=385} [2024-06-28 03:18:22,584 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 336 predicate places. [2024-06-28 03:18:22,584 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 385 transitions, 5355 flow [2024-06-28 03:18:22,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:22,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:22,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:22,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:18:22,584 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:22,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:22,585 INFO L85 PathProgramCache]: Analyzing trace with hash 962441935, now seen corresponding path program 10 times [2024-06-28 03:18:22,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:22,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801414151] [2024-06-28 03:18:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:22,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:23,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:23,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801414151] [2024-06-28 03:18:23,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801414151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:23,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:23,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11434155] [2024-06-28 03:18:23,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:23,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:23,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:23,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:23,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:23,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:23,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 385 transitions, 5355 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:23,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:23,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:23,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:24,023 INFO L124 PetriNetUnfolderBase]: 896/1531 cut-off events. [2024-06-28 03:18:24,023 INFO L125 PetriNetUnfolderBase]: For 267768/267768 co-relation queries the response was YES. [2024-06-28 03:18:24,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14710 conditions, 1531 events. 896/1531 cut-off events. For 267768/267768 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7786 event pairs, 71 based on Foata normal form. 3/1534 useless extension candidates. Maximal degree in co-relation 14560. Up to 1027 conditions per place. [2024-06-28 03:18:24,039 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 285 selfloop transitions, 122 changer transitions 0/409 dead transitions. [2024-06-28 03:18:24,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 409 transitions, 6693 flow [2024-06-28 03:18:24,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:18:24,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-28 03:18:24,040 INFO L175 Difference]: Start difference. First operand has 368 places, 385 transitions, 5355 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:18:24,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 409 transitions, 6693 flow [2024-06-28 03:18:25,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 409 transitions, 6466 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 03:18:25,245 INFO L231 Difference]: Finished difference. Result has 368 places, 388 transitions, 5425 flow [2024-06-28 03:18:25,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5134, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5425, PETRI_PLACES=368, PETRI_TRANSITIONS=388} [2024-06-28 03:18:25,245 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 336 predicate places. [2024-06-28 03:18:25,246 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 388 transitions, 5425 flow [2024-06-28 03:18:25,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:25,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:25,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:25,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:18:25,246 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:25,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash 105686519, now seen corresponding path program 11 times [2024-06-28 03:18:25,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:25,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077562743] [2024-06-28 03:18:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:25,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:25,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:25,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077562743] [2024-06-28 03:18:25,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077562743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:25,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:25,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:25,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591699340] [2024-06-28 03:18:25,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:25,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:25,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:25,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:25,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:26,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:26,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 388 transitions, 5425 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:26,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:26,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:26,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:26,707 INFO L124 PetriNetUnfolderBase]: 920/1570 cut-off events. [2024-06-28 03:18:26,708 INFO L125 PetriNetUnfolderBase]: For 288019/288019 co-relation queries the response was YES. [2024-06-28 03:18:26,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15325 conditions, 1570 events. 920/1570 cut-off events. For 288019/288019 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 8010 event pairs, 72 based on Foata normal form. 3/1573 useless extension candidates. Maximal degree in co-relation 15174. Up to 1047 conditions per place. [2024-06-28 03:18:26,725 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 302 selfloop transitions, 116 changer transitions 0/420 dead transitions. [2024-06-28 03:18:26,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 420 transitions, 7075 flow [2024-06-28 03:18:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-28 03:18:26,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41046831955922863 [2024-06-28 03:18:26,726 INFO L175 Difference]: Start difference. First operand has 368 places, 388 transitions, 5425 flow. Second operand 11 states and 149 transitions. [2024-06-28 03:18:26,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 420 transitions, 7075 flow [2024-06-28 03:18:27,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 420 transitions, 6843 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:27,690 INFO L231 Difference]: Finished difference. Result has 371 places, 394 transitions, 5524 flow [2024-06-28 03:18:27,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5215, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5524, PETRI_PLACES=371, PETRI_TRANSITIONS=394} [2024-06-28 03:18:27,690 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 339 predicate places. [2024-06-28 03:18:27,690 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 394 transitions, 5524 flow [2024-06-28 03:18:27,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:27,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:27,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:27,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:18:27,691 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:27,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash 98321477, now seen corresponding path program 10 times [2024-06-28 03:18:27,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:27,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333277375] [2024-06-28 03:18:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:27,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:28,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:28,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333277375] [2024-06-28 03:18:28,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333277375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:28,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:28,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:28,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489677289] [2024-06-28 03:18:28,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:28,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:28,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:28,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:28,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:18:28,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 394 transitions, 5524 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:28,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:28,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:18:28,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:29,432 INFO L124 PetriNetUnfolderBase]: 889/1540 cut-off events. [2024-06-28 03:18:29,432 INFO L125 PetriNetUnfolderBase]: For 285032/285032 co-relation queries the response was YES. [2024-06-28 03:18:29,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15181 conditions, 1540 events. 889/1540 cut-off events. For 285032/285032 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8008 event pairs, 83 based on Foata normal form. 1/1541 useless extension candidates. Maximal degree in co-relation 15029. Up to 1225 conditions per place. [2024-06-28 03:18:29,450 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 272 selfloop transitions, 80 changer transitions 0/409 dead transitions. [2024-06-28 03:18:29,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 409 transitions, 6304 flow [2024-06-28 03:18:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:29,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:18:29,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-28 03:18:29,451 INFO L175 Difference]: Start difference. First operand has 371 places, 394 transitions, 5524 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:18:29,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 409 transitions, 6304 flow [2024-06-28 03:18:30,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 409 transitions, 6134 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:30,666 INFO L231 Difference]: Finished difference. Result has 375 places, 396 transitions, 5567 flow [2024-06-28 03:18:30,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5354, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5567, PETRI_PLACES=375, PETRI_TRANSITIONS=396} [2024-06-28 03:18:30,666 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 343 predicate places. [2024-06-28 03:18:30,666 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 396 transitions, 5567 flow [2024-06-28 03:18:30,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:30,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:30,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:30,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:18:30,667 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:30,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:30,667 INFO L85 PathProgramCache]: Analyzing trace with hash 98536679, now seen corresponding path program 12 times [2024-06-28 03:18:30,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:30,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616347366] [2024-06-28 03:18:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:30,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:31,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:31,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616347366] [2024-06-28 03:18:31,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616347366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:31,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:31,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:31,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996454349] [2024-06-28 03:18:31,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:31,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:31,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:31,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:31,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:31,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 396 transitions, 5567 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:31,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:31,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:31,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:32,144 INFO L124 PetriNetUnfolderBase]: 932/1590 cut-off events. [2024-06-28 03:18:32,144 INFO L125 PetriNetUnfolderBase]: For 299793/299793 co-relation queries the response was YES. [2024-06-28 03:18:32,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15429 conditions, 1590 events. 932/1590 cut-off events. For 299793/299793 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8167 event pairs, 76 based on Foata normal form. 3/1593 useless extension candidates. Maximal degree in co-relation 15276. Up to 1060 conditions per place. [2024-06-28 03:18:32,163 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 310 selfloop transitions, 113 changer transitions 0/425 dead transitions. [2024-06-28 03:18:32,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 425 transitions, 7185 flow [2024-06-28 03:18:32,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:32,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:32,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-28 03:18:32,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-28 03:18:32,164 INFO L175 Difference]: Start difference. First operand has 375 places, 396 transitions, 5567 flow. Second operand 11 states and 150 transitions. [2024-06-28 03:18:32,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 425 transitions, 7185 flow [2024-06-28 03:18:33,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 425 transitions, 6988 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 03:18:33,389 INFO L231 Difference]: Finished difference. Result has 377 places, 399 transitions, 5641 flow [2024-06-28 03:18:33,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5370, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5641, PETRI_PLACES=377, PETRI_TRANSITIONS=399} [2024-06-28 03:18:33,390 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 345 predicate places. [2024-06-28 03:18:33,390 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 399 transitions, 5641 flow [2024-06-28 03:18:33,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:33,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:33,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:33,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:18:33,390 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:33,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:33,390 INFO L85 PathProgramCache]: Analyzing trace with hash 98529022, now seen corresponding path program 17 times [2024-06-28 03:18:33,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:33,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991871630] [2024-06-28 03:18:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:33,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:34,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:34,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991871630] [2024-06-28 03:18:34,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991871630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:34,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:34,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:34,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448885981] [2024-06-28 03:18:34,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:34,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:34,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:34,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:34,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:34,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:34,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 399 transitions, 5641 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:34,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:34,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:34,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:34,766 INFO L124 PetriNetUnfolderBase]: 940/1602 cut-off events. [2024-06-28 03:18:34,767 INFO L125 PetriNetUnfolderBase]: For 301245/301245 co-relation queries the response was YES. [2024-06-28 03:18:34,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15777 conditions, 1602 events. 940/1602 cut-off events. For 301245/301245 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8245 event pairs, 89 based on Foata normal form. 1/1603 useless extension candidates. Maximal degree in co-relation 15623. Up to 1210 conditions per place. [2024-06-28 03:18:34,786 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 292 selfloop transitions, 125 changer transitions 0/419 dead transitions. [2024-06-28 03:18:34,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 419 transitions, 7191 flow [2024-06-28 03:18:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:18:34,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-28 03:18:34,787 INFO L175 Difference]: Start difference. First operand has 377 places, 399 transitions, 5641 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:18:34,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 419 transitions, 7191 flow [2024-06-28 03:18:35,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 419 transitions, 6825 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:18:35,771 INFO L231 Difference]: Finished difference. Result has 377 places, 403 transitions, 5596 flow [2024-06-28 03:18:35,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5275, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5596, PETRI_PLACES=377, PETRI_TRANSITIONS=403} [2024-06-28 03:18:35,771 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 345 predicate places. [2024-06-28 03:18:35,771 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 403 transitions, 5596 flow [2024-06-28 03:18:35,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:35,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:35,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:35,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:18:35,771 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:35,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:35,772 INFO L85 PathProgramCache]: Analyzing trace with hash 105679079, now seen corresponding path program 13 times [2024-06-28 03:18:35,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:35,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149056352] [2024-06-28 03:18:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:35,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:36,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149056352] [2024-06-28 03:18:36,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149056352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:36,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:36,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:36,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536613770] [2024-06-28 03:18:36,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:36,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:36,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:36,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:36,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:36,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:36,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 403 transitions, 5596 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:36,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:36,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:36,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:37,235 INFO L124 PetriNetUnfolderBase]: 934/1594 cut-off events. [2024-06-28 03:18:37,235 INFO L125 PetriNetUnfolderBase]: For 300527/300527 co-relation queries the response was YES. [2024-06-28 03:18:37,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15395 conditions, 1594 events. 934/1594 cut-off events. For 300527/300527 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8201 event pairs, 72 based on Foata normal form. 3/1597 useless extension candidates. Maximal degree in co-relation 15240. Up to 1069 conditions per place. [2024-06-28 03:18:37,253 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 303 selfloop transitions, 121 changer transitions 0/426 dead transitions. [2024-06-28 03:18:37,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 426 transitions, 6958 flow [2024-06-28 03:18:37,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:37,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 03:18:37,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-28 03:18:37,254 INFO L175 Difference]: Start difference. First operand has 377 places, 403 transitions, 5596 flow. Second operand 11 states and 147 transitions. [2024-06-28 03:18:37,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 426 transitions, 6958 flow [2024-06-28 03:18:38,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 426 transitions, 6678 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:38,279 INFO L231 Difference]: Finished difference. Result has 380 places, 403 transitions, 5564 flow [2024-06-28 03:18:38,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5316, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5564, PETRI_PLACES=380, PETRI_TRANSITIONS=403} [2024-06-28 03:18:38,279 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 348 predicate places. [2024-06-28 03:18:38,279 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 403 transitions, 5564 flow [2024-06-28 03:18:38,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:38,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:38,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:38,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:18:38,280 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:38,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:38,280 INFO L85 PathProgramCache]: Analyzing trace with hash 98327429, now seen corresponding path program 14 times [2024-06-28 03:18:38,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:38,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332918581] [2024-06-28 03:18:38,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:38,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:38,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:38,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332918581] [2024-06-28 03:18:38,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332918581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:38,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:38,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:38,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915872356] [2024-06-28 03:18:38,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:38,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:38,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:38,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:38,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:39,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:39,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 403 transitions, 5564 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:39,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:39,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:39,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:39,729 INFO L124 PetriNetUnfolderBase]: 943/1609 cut-off events. [2024-06-28 03:18:39,730 INFO L125 PetriNetUnfolderBase]: For 305855/305855 co-relation queries the response was YES. [2024-06-28 03:18:39,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15556 conditions, 1609 events. 943/1609 cut-off events. For 305855/305855 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8294 event pairs, 72 based on Foata normal form. 3/1612 useless extension candidates. Maximal degree in co-relation 15400. Up to 1077 conditions per place. [2024-06-28 03:18:39,748 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 307 selfloop transitions, 120 changer transitions 0/429 dead transitions. [2024-06-28 03:18:39,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 429 transitions, 6974 flow [2024-06-28 03:18:39,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 03:18:39,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-28 03:18:39,749 INFO L175 Difference]: Start difference. First operand has 380 places, 403 transitions, 5564 flow. Second operand 11 states and 148 transitions. [2024-06-28 03:18:39,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 429 transitions, 6974 flow [2024-06-28 03:18:40,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 429 transitions, 6722 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 03:18:40,953 INFO L231 Difference]: Finished difference. Result has 381 places, 406 transitions, 5596 flow [2024-06-28 03:18:40,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5318, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5596, PETRI_PLACES=381, PETRI_TRANSITIONS=406} [2024-06-28 03:18:40,954 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 349 predicate places. [2024-06-28 03:18:40,954 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 406 transitions, 5596 flow [2024-06-28 03:18:40,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:40,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:40,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:40,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:18:40,954 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:40,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash 98529239, now seen corresponding path program 15 times [2024-06-28 03:18:40,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:40,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586317372] [2024-06-28 03:18:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:40,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:41,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:41,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586317372] [2024-06-28 03:18:41,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586317372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:41,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:41,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:41,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314654706] [2024-06-28 03:18:41,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:41,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:41,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:41,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:41,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:41,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:41,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 406 transitions, 5596 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:41,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:41,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:41,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:42,412 INFO L124 PetriNetUnfolderBase]: 937/1600 cut-off events. [2024-06-28 03:18:42,412 INFO L125 PetriNetUnfolderBase]: For 295032/295032 co-relation queries the response was YES. [2024-06-28 03:18:42,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15251 conditions, 1600 events. 937/1600 cut-off events. For 295032/295032 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8265 event pairs, 70 based on Foata normal form. 3/1603 useless extension candidates. Maximal degree in co-relation 15094. Up to 1073 conditions per place. [2024-06-28 03:18:42,432 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 315 selfloop transitions, 115 changer transitions 0/432 dead transitions. [2024-06-28 03:18:42,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 432 transitions, 6806 flow [2024-06-28 03:18:42,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:42,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 03:18:42,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597796143250687 [2024-06-28 03:18:42,432 INFO L175 Difference]: Start difference. First operand has 381 places, 406 transitions, 5596 flow. Second operand 11 states and 151 transitions. [2024-06-28 03:18:42,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 432 transitions, 6806 flow [2024-06-28 03:18:43,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 432 transitions, 6536 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:18:43,721 INFO L231 Difference]: Finished difference. Result has 383 places, 406 transitions, 5562 flow [2024-06-28 03:18:43,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5326, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5562, PETRI_PLACES=383, PETRI_TRANSITIONS=406} [2024-06-28 03:18:43,721 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 351 predicate places. [2024-06-28 03:18:43,721 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 406 transitions, 5562 flow [2024-06-28 03:18:43,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:43,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:43,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:43,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:18:43,722 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:43,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:43,722 INFO L85 PathProgramCache]: Analyzing trace with hash 105678862, now seen corresponding path program 18 times [2024-06-28 03:18:43,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:43,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713253969] [2024-06-28 03:18:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:43,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:44,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:44,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:44,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713253969] [2024-06-28 03:18:44,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713253969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:44,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:44,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:44,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791828486] [2024-06-28 03:18:44,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:44,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:44,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:44,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:44,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:44,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:44,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 406 transitions, 5562 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:44,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:44,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:44,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:45,128 INFO L124 PetriNetUnfolderBase]: 935/1596 cut-off events. [2024-06-28 03:18:45,129 INFO L125 PetriNetUnfolderBase]: For 283442/283442 co-relation queries the response was YES. [2024-06-28 03:18:45,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15149 conditions, 1596 events. 935/1596 cut-off events. For 283442/283442 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8226 event pairs, 83 based on Foata normal form. 1/1597 useless extension candidates. Maximal degree in co-relation 14991. Up to 1205 conditions per place. [2024-06-28 03:18:45,148 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 278 selfloop transitions, 141 changer transitions 0/421 dead transitions. [2024-06-28 03:18:45,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 421 transitions, 6860 flow [2024-06-28 03:18:45,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 03:18:45,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-28 03:18:45,149 INFO L175 Difference]: Start difference. First operand has 383 places, 406 transitions, 5562 flow. Second operand 11 states and 138 transitions. [2024-06-28 03:18:45,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 421 transitions, 6860 flow [2024-06-28 03:18:46,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 421 transitions, 6586 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:18:46,267 INFO L231 Difference]: Finished difference. Result has 383 places, 406 transitions, 5575 flow [2024-06-28 03:18:46,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5288, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5575, PETRI_PLACES=383, PETRI_TRANSITIONS=406} [2024-06-28 03:18:46,267 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 351 predicate places. [2024-06-28 03:18:46,267 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 406 transitions, 5575 flow [2024-06-28 03:18:46,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:46,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:46,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:46,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:18:46,268 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:46,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash 450702902, now seen corresponding path program 19 times [2024-06-28 03:18:46,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:46,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874456002] [2024-06-28 03:18:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:46,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:46,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:46,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874456002] [2024-06-28 03:18:46,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874456002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:46,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:46,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:46,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659261053] [2024-06-28 03:18:46,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:46,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:46,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:46,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:46,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:47,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:47,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 406 transitions, 5575 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:47,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:47,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:47,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:47,692 INFO L124 PetriNetUnfolderBase]: 938/1601 cut-off events. [2024-06-28 03:18:47,692 INFO L125 PetriNetUnfolderBase]: For 288548/288548 co-relation queries the response was YES. [2024-06-28 03:18:47,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15192 conditions, 1601 events. 938/1601 cut-off events. For 288548/288548 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8265 event pairs, 83 based on Foata normal form. 1/1602 useless extension candidates. Maximal degree in co-relation 15033. Up to 1209 conditions per place. [2024-06-28 03:18:47,708 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 293 selfloop transitions, 128 changer transitions 0/423 dead transitions. [2024-06-28 03:18:47,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 423 transitions, 6912 flow [2024-06-28 03:18:47,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:18:47,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-28 03:18:47,709 INFO L175 Difference]: Start difference. First operand has 383 places, 406 transitions, 5575 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:18:47,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 423 transitions, 6912 flow [2024-06-28 03:18:48,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 423 transitions, 6615 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:18:48,836 INFO L231 Difference]: Finished difference. Result has 384 places, 408 transitions, 5570 flow [2024-06-28 03:18:48,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5282, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5570, PETRI_PLACES=384, PETRI_TRANSITIONS=408} [2024-06-28 03:18:48,837 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 352 predicate places. [2024-06-28 03:18:48,837 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 408 transitions, 5570 flow [2024-06-28 03:18:48,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:48,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:48,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:48,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:18:48,837 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:48,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash 450697322, now seen corresponding path program 20 times [2024-06-28 03:18:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:48,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337058062] [2024-06-28 03:18:48,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:48,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:49,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337058062] [2024-06-28 03:18:49,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337058062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:49,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:49,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:49,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915102878] [2024-06-28 03:18:49,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:49,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:49,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:49,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:49,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:49,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 408 transitions, 5570 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:49,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:49,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:49,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:50,269 INFO L124 PetriNetUnfolderBase]: 936/1598 cut-off events. [2024-06-28 03:18:50,269 INFO L125 PetriNetUnfolderBase]: For 288018/288018 co-relation queries the response was YES. [2024-06-28 03:18:50,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15084 conditions, 1598 events. 936/1598 cut-off events. For 288018/288018 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8245 event pairs, 83 based on Foata normal form. 1/1599 useless extension candidates. Maximal degree in co-relation 14924. Up to 1207 conditions per place. [2024-06-28 03:18:50,287 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 290 selfloop transitions, 130 changer transitions 0/422 dead transitions. [2024-06-28 03:18:50,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 422 transitions, 6660 flow [2024-06-28 03:18:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:50,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 03:18:50,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-28 03:18:50,289 INFO L175 Difference]: Start difference. First operand has 384 places, 408 transitions, 5570 flow. Second operand 11 states and 138 transitions. [2024-06-28 03:18:50,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 422 transitions, 6660 flow [2024-06-28 03:18:51,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 422 transitions, 6355 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 03:18:51,446 INFO L231 Difference]: Finished difference. Result has 385 places, 408 transitions, 5530 flow [2024-06-28 03:18:51,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5265, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5530, PETRI_PLACES=385, PETRI_TRANSITIONS=408} [2024-06-28 03:18:51,446 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 353 predicate places. [2024-06-28 03:18:51,446 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 408 transitions, 5530 flow [2024-06-28 03:18:51,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:51,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:51,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:51,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:18:51,447 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:51,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:51,447 INFO L85 PathProgramCache]: Analyzing trace with hash -286438763, now seen corresponding path program 11 times [2024-06-28 03:18:51,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:51,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336125302] [2024-06-28 03:18:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:51,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:52,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:52,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336125302] [2024-06-28 03:18:52,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336125302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:52,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:52,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:52,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575388557] [2024-06-28 03:18:52,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:52,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:52,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:52,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:52,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:52,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:18:52,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 408 transitions, 5530 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:52,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:52,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:18:52,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:52,988 INFO L124 PetriNetUnfolderBase]: 902/1565 cut-off events. [2024-06-28 03:18:52,988 INFO L125 PetriNetUnfolderBase]: For 305872/305875 co-relation queries the response was YES. [2024-06-28 03:18:53,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15120 conditions, 1565 events. 902/1565 cut-off events. For 305872/305875 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8322 event pairs, 132 based on Foata normal form. 1/1561 useless extension candidates. Maximal degree in co-relation 14959. Up to 1286 conditions per place. [2024-06-28 03:18:53,006 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 303 selfloop transitions, 65 changer transitions 0/428 dead transitions. [2024-06-28 03:18:53,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 428 transitions, 6318 flow [2024-06-28 03:18:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:53,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:18:53,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-28 03:18:53,007 INFO L175 Difference]: Start difference. First operand has 385 places, 408 transitions, 5530 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:18:53,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 428 transitions, 6318 flow [2024-06-28 03:18:54,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 428 transitions, 6049 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:18:54,155 INFO L231 Difference]: Finished difference. Result has 386 places, 408 transitions, 5413 flow [2024-06-28 03:18:54,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5261, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5413, PETRI_PLACES=386, PETRI_TRANSITIONS=408} [2024-06-28 03:18:54,155 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 354 predicate places. [2024-06-28 03:18:54,155 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 408 transitions, 5413 flow [2024-06-28 03:18:54,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:54,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:54,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:54,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:18:54,156 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:54,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:54,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1969201735, now seen corresponding path program 2 times [2024-06-28 03:18:54,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:54,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532501493] [2024-06-28 03:18:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:54,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:54,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:54,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532501493] [2024-06-28 03:18:54,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532501493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:54,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:54,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:18:54,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115544461] [2024-06-28 03:18:54,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:54,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:18:54,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:18:54,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:18:54,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:54,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 408 transitions, 5413 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:54,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:54,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:54,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:55,644 INFO L124 PetriNetUnfolderBase]: 943/1613 cut-off events. [2024-06-28 03:18:55,645 INFO L125 PetriNetUnfolderBase]: For 303560/303560 co-relation queries the response was YES. [2024-06-28 03:18:55,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15017 conditions, 1613 events. 943/1613 cut-off events. For 303560/303560 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8395 event pairs, 92 based on Foata normal form. 3/1616 useless extension candidates. Maximal degree in co-relation 14855. Up to 940 conditions per place. [2024-06-28 03:18:55,660 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 306 selfloop transitions, 129 changer transitions 0/437 dead transitions. [2024-06-28 03:18:55,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 437 transitions, 7073 flow [2024-06-28 03:18:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:18:55,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:18:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-28 03:18:55,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-28 03:18:55,661 INFO L175 Difference]: Start difference. First operand has 386 places, 408 transitions, 5413 flow. Second operand 12 states and 163 transitions. [2024-06-28 03:18:55,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 437 transitions, 7073 flow [2024-06-28 03:18:56,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 437 transitions, 6931 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:18:56,523 INFO L231 Difference]: Finished difference. Result has 389 places, 410 transitions, 5576 flow [2024-06-28 03:18:56,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5289, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5576, PETRI_PLACES=389, PETRI_TRANSITIONS=410} [2024-06-28 03:18:56,523 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 357 predicate places. [2024-06-28 03:18:56,523 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 410 transitions, 5576 flow [2024-06-28 03:18:56,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:56,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:56,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:56,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:18:56,523 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:56,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:56,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2018762862, now seen corresponding path program 21 times [2024-06-28 03:18:56,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:56,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813503847] [2024-06-28 03:18:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:56,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:57,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:57,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813503847] [2024-06-28 03:18:57,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813503847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:57,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:57,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:57,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049783440] [2024-06-28 03:18:57,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:57,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:57,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:57,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:57,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:57,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:18:57,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 410 transitions, 5576 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:57,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:57,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:18:57,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:57,790 INFO L124 PetriNetUnfolderBase]: 941/1609 cut-off events. [2024-06-28 03:18:57,791 INFO L125 PetriNetUnfolderBase]: For 276536/276536 co-relation queries the response was YES. [2024-06-28 03:18:57,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15013 conditions, 1609 events. 941/1609 cut-off events. For 276536/276536 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8386 event pairs, 152 based on Foata normal form. 1/1610 useless extension candidates. Maximal degree in co-relation 14850. Up to 1490 conditions per place. [2024-06-28 03:18:57,812 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 370 selfloop transitions, 55 changer transitions 0/427 dead transitions. [2024-06-28 03:18:57,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 427 transitions, 6470 flow [2024-06-28 03:18:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:57,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:18:57,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-28 03:18:57,813 INFO L175 Difference]: Start difference. First operand has 389 places, 410 transitions, 5576 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:18:57,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 427 transitions, 6470 flow [2024-06-28 03:18:59,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 427 transitions, 6208 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:18:59,009 INFO L231 Difference]: Finished difference. Result has 390 places, 410 transitions, 5441 flow [2024-06-28 03:18:59,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5314, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5441, PETRI_PLACES=390, PETRI_TRANSITIONS=410} [2024-06-28 03:18:59,010 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 358 predicate places. [2024-06-28 03:18:59,010 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 410 transitions, 5441 flow [2024-06-28 03:18:59,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:59,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:59,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:59,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:18:59,010 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:18:59,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:59,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1880378707, now seen corresponding path program 12 times [2024-06-28 03:18:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:59,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847351820] [2024-06-28 03:18:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:59,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:59,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:59,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847351820] [2024-06-28 03:18:59,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847351820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:59,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:59,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:59,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887105572] [2024-06-28 03:18:59,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:59,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:59,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:59,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:59,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:59,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:18:59,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 410 transitions, 5441 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:59,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:59,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:18:59,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:00,339 INFO L124 PetriNetUnfolderBase]: 906/1574 cut-off events. [2024-06-28 03:19:00,339 INFO L125 PetriNetUnfolderBase]: For 281522/281523 co-relation queries the response was YES. [2024-06-28 03:19:00,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14644 conditions, 1574 events. 906/1574 cut-off events. For 281522/281523 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8360 event pairs, 109 based on Foata normal form. 1/1569 useless extension candidates. Maximal degree in co-relation 14480. Up to 1247 conditions per place. [2024-06-28 03:19:00,358 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 270 selfloop transitions, 97 changer transitions 0/427 dead transitions. [2024-06-28 03:19:00,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 427 transitions, 6261 flow [2024-06-28 03:19:00,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:00,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:00,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 03:19:00,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-28 03:19:00,359 INFO L175 Difference]: Start difference. First operand has 390 places, 410 transitions, 5441 flow. Second operand 10 states and 131 transitions. [2024-06-28 03:19:00,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 427 transitions, 6261 flow [2024-06-28 03:19:01,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 427 transitions, 6149 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:19:01,398 INFO L231 Difference]: Finished difference. Result has 391 places, 412 transitions, 5589 flow [2024-06-28 03:19:01,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5329, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5589, PETRI_PLACES=391, PETRI_TRANSITIONS=412} [2024-06-28 03:19:01,399 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 359 predicate places. [2024-06-28 03:19:01,399 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 412 transitions, 5589 flow [2024-06-28 03:19:01,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:01,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:01,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:01,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:19:01,399 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:01,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2082626158, now seen corresponding path program 22 times [2024-06-28 03:19:01,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:01,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788538564] [2024-06-28 03:19:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:02,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:02,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788538564] [2024-06-28 03:19:02,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788538564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:02,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:02,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:02,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005550787] [2024-06-28 03:19:02,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:02,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:02,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:02,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:02,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:02,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:02,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 412 transitions, 5589 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:02,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:02,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:02,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:02,676 INFO L124 PetriNetUnfolderBase]: 952/1628 cut-off events. [2024-06-28 03:19:02,676 INFO L125 PetriNetUnfolderBase]: For 272267/272267 co-relation queries the response was YES. [2024-06-28 03:19:02,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15061 conditions, 1628 events. 952/1628 cut-off events. For 272267/272267 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8500 event pairs, 262 based on Foata normal form. 1/1629 useless extension candidates. Maximal degree in co-relation 14897. Up to 1451 conditions per place. [2024-06-28 03:19:02,696 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 368 selfloop transitions, 62 changer transitions 0/432 dead transitions. [2024-06-28 03:19:02,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 432 transitions, 7020 flow [2024-06-28 03:19:02,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:19:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:19:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:19:02,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-28 03:19:02,697 INFO L175 Difference]: Start difference. First operand has 391 places, 412 transitions, 5589 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:19:02,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 432 transitions, 7020 flow [2024-06-28 03:19:03,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 432 transitions, 6711 flow, removed 37 selfloop flow, removed 12 redundant places. [2024-06-28 03:19:03,730 INFO L231 Difference]: Finished difference. Result has 391 places, 417 transitions, 5537 flow [2024-06-28 03:19:03,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5298, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5537, PETRI_PLACES=391, PETRI_TRANSITIONS=417} [2024-06-28 03:19:03,731 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 359 predicate places. [2024-06-28 03:19:03,731 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 417 transitions, 5537 flow [2024-06-28 03:19:03,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:03,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:03,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:03,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:19:03,731 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:03,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:03,731 INFO L85 PathProgramCache]: Analyzing trace with hash -282623531, now seen corresponding path program 16 times [2024-06-28 03:19:03,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:03,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133409087] [2024-06-28 03:19:03,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:03,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:04,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:04,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133409087] [2024-06-28 03:19:04,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133409087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:04,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:04,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687711705] [2024-06-28 03:19:04,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:04,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:04,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:04,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:04,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:04,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 417 transitions, 5537 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:04,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:04,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:04,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:04,969 INFO L124 PetriNetUnfolderBase]: 971/1658 cut-off events. [2024-06-28 03:19:04,969 INFO L125 PetriNetUnfolderBase]: For 283120/283120 co-relation queries the response was YES. [2024-06-28 03:19:04,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15166 conditions, 1658 events. 971/1658 cut-off events. For 283120/283120 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8641 event pairs, 97 based on Foata normal form. 3/1661 useless extension candidates. Maximal degree in co-relation 15003. Up to 973 conditions per place. [2024-06-28 03:19:04,990 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 250 selfloop transitions, 194 changer transitions 0/446 dead transitions. [2024-06-28 03:19:04,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 446 transitions, 6807 flow [2024-06-28 03:19:04,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 03:19:04,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-28 03:19:04,991 INFO L175 Difference]: Start difference. First operand has 391 places, 417 transitions, 5537 flow. Second operand 10 states and 137 transitions. [2024-06-28 03:19:04,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 446 transitions, 6807 flow [2024-06-28 03:19:06,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 446 transitions, 6499 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:06,392 INFO L231 Difference]: Finished difference. Result has 393 places, 422 transitions, 5708 flow [2024-06-28 03:19:06,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5229, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5708, PETRI_PLACES=393, PETRI_TRANSITIONS=422} [2024-06-28 03:19:06,392 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 361 predicate places. [2024-06-28 03:19:06,393 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 422 transitions, 5708 flow [2024-06-28 03:19:06,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:06,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:06,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:06,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:19:06,393 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:06,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:06,393 INFO L85 PathProgramCache]: Analyzing trace with hash -282623748, now seen corresponding path program 23 times [2024-06-28 03:19:06,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:06,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905459913] [2024-06-28 03:19:06,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:06,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:07,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:07,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905459913] [2024-06-28 03:19:07,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905459913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:07,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:07,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:07,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498867999] [2024-06-28 03:19:07,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:07,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:07,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:07,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:07,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:07,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:07,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 422 transitions, 5708 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:07,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:07,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:07,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:07,572 INFO L124 PetriNetUnfolderBase]: 969/1656 cut-off events. [2024-06-28 03:19:07,572 INFO L125 PetriNetUnfolderBase]: For 271812/271812 co-relation queries the response was YES. [2024-06-28 03:19:07,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15420 conditions, 1656 events. 969/1656 cut-off events. For 271812/271812 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8655 event pairs, 104 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 15257. Up to 1261 conditions per place. [2024-06-28 03:19:07,593 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 270 selfloop transitions, 166 changer transitions 0/438 dead transitions. [2024-06-28 03:19:07,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 438 transitions, 6830 flow [2024-06-28 03:19:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:07,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 03:19:07,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-28 03:19:07,594 INFO L175 Difference]: Start difference. First operand has 393 places, 422 transitions, 5708 flow. Second operand 10 states and 128 transitions. [2024-06-28 03:19:07,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 438 transitions, 6830 flow [2024-06-28 03:19:08,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 438 transitions, 6625 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 03:19:08,814 INFO L231 Difference]: Finished difference. Result has 394 places, 422 transitions, 5855 flow [2024-06-28 03:19:08,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5509, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5855, PETRI_PLACES=394, PETRI_TRANSITIONS=422} [2024-06-28 03:19:08,815 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 362 predicate places. [2024-06-28 03:19:08,815 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 422 transitions, 5855 flow [2024-06-28 03:19:08,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:08,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:08,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:08,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:19:08,815 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:08,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:08,816 INFO L85 PathProgramCache]: Analyzing trace with hash -220386633, now seen corresponding path program 17 times [2024-06-28 03:19:08,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:08,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345643068] [2024-06-28 03:19:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:08,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:09,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:09,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345643068] [2024-06-28 03:19:09,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345643068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:09,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:09,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:09,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488600253] [2024-06-28 03:19:09,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:09,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:09,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:09,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:09,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:09,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:09,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 422 transitions, 5855 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:09,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:09,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:09,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:10,071 INFO L124 PetriNetUnfolderBase]: 1008/1719 cut-off events. [2024-06-28 03:19:10,071 INFO L125 PetriNetUnfolderBase]: For 304718/304718 co-relation queries the response was YES. [2024-06-28 03:19:10,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16518 conditions, 1719 events. 1008/1719 cut-off events. For 304718/304718 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9011 event pairs, 104 based on Foata normal form. 3/1722 useless extension candidates. Maximal degree in co-relation 16356. Up to 1002 conditions per place. [2024-06-28 03:19:10,093 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 291 selfloop transitions, 170 changer transitions 0/463 dead transitions. [2024-06-28 03:19:10,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 463 transitions, 7720 flow [2024-06-28 03:19:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:10,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 03:19:10,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 03:19:10,094 INFO L175 Difference]: Start difference. First operand has 394 places, 422 transitions, 5855 flow. Second operand 10 states and 140 transitions. [2024-06-28 03:19:10,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 463 transitions, 7720 flow [2024-06-28 03:19:11,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 463 transitions, 7365 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 03:19:11,224 INFO L231 Difference]: Finished difference. Result has 393 places, 431 transitions, 6004 flow [2024-06-28 03:19:11,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5518, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6004, PETRI_PLACES=393, PETRI_TRANSITIONS=431} [2024-06-28 03:19:11,224 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 361 predicate places. [2024-06-28 03:19:11,224 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 431 transitions, 6004 flow [2024-06-28 03:19:11,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:11,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:11,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:11,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:19:11,225 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:11,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:11,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2014803017, now seen corresponding path program 18 times [2024-06-28 03:19:11,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:11,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272049434] [2024-06-28 03:19:11,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:11,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:11,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:11,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272049434] [2024-06-28 03:19:11,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272049434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:11,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:11,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:11,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257555183] [2024-06-28 03:19:11,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:11,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:11,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:11,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:11,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:11,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:11,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 431 transitions, 6004 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:11,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:11,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:11,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:12,489 INFO L124 PetriNetUnfolderBase]: 1002/1710 cut-off events. [2024-06-28 03:19:12,489 INFO L125 PetriNetUnfolderBase]: For 278446/278446 co-relation queries the response was YES. [2024-06-28 03:19:12,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16144 conditions, 1710 events. 1002/1710 cut-off events. For 278446/278446 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8984 event pairs, 102 based on Foata normal form. 3/1713 useless extension candidates. Maximal degree in co-relation 15984. Up to 998 conditions per place. [2024-06-28 03:19:12,507 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 279 selfloop transitions, 177 changer transitions 0/458 dead transitions. [2024-06-28 03:19:12,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 458 transitions, 7473 flow [2024-06-28 03:19:12,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:12,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:12,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-28 03:19:12,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-28 03:19:12,508 INFO L175 Difference]: Start difference. First operand has 393 places, 431 transitions, 6004 flow. Second operand 10 states and 136 transitions. [2024-06-28 03:19:12,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 458 transitions, 7473 flow [2024-06-28 03:19:13,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 458 transitions, 7247 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:13,606 INFO L231 Difference]: Finished difference. Result has 396 places, 431 transitions, 6157 flow [2024-06-28 03:19:13,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5786, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6157, PETRI_PLACES=396, PETRI_TRANSITIONS=431} [2024-06-28 03:19:13,606 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 364 predicate places. [2024-06-28 03:19:13,606 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 431 transitions, 6157 flow [2024-06-28 03:19:13,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:13,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:13,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:13,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:19:13,608 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:13,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:13,608 INFO L85 PathProgramCache]: Analyzing trace with hash -138531408, now seen corresponding path program 24 times [2024-06-28 03:19:13,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:13,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818753489] [2024-06-28 03:19:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:13,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:14,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:14,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818753489] [2024-06-28 03:19:14,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818753489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:14,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:14,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:14,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747768893] [2024-06-28 03:19:14,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:14,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:14,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:14,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:14,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:14,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:14,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 431 transitions, 6157 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:14,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:14,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:14,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:14,781 INFO L124 PetriNetUnfolderBase]: 1010/1720 cut-off events. [2024-06-28 03:19:14,781 INFO L125 PetriNetUnfolderBase]: For 269156/269156 co-relation queries the response was YES. [2024-06-28 03:19:14,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16361 conditions, 1720 events. 1010/1720 cut-off events. For 269156/269156 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9009 event pairs, 84 based on Foata normal form. 1/1721 useless extension candidates. Maximal degree in co-relation 16202. Up to 1325 conditions per place. [2024-06-28 03:19:14,803 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 284 selfloop transitions, 164 changer transitions 0/450 dead transitions. [2024-06-28 03:19:14,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 450 transitions, 7543 flow [2024-06-28 03:19:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:14,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:14,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 03:19:14,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-28 03:19:14,805 INFO L175 Difference]: Start difference. First operand has 396 places, 431 transitions, 6157 flow. Second operand 10 states and 127 transitions. [2024-06-28 03:19:14,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 450 transitions, 7543 flow [2024-06-28 03:19:15,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 450 transitions, 7201 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 03:19:15,842 INFO L231 Difference]: Finished difference. Result has 396 places, 435 transitions, 6216 flow [2024-06-28 03:19:15,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5823, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6216, PETRI_PLACES=396, PETRI_TRANSITIONS=435} [2024-06-28 03:19:15,842 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 364 predicate places. [2024-06-28 03:19:15,842 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 435 transitions, 6216 flow [2024-06-28 03:19:15,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:15,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:15,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:15,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:19:15,842 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:15,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:15,843 INFO L85 PathProgramCache]: Analyzing trace with hash -138733218, now seen corresponding path program 25 times [2024-06-28 03:19:15,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:15,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884263227] [2024-06-28 03:19:15,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:15,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:16,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:16,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884263227] [2024-06-28 03:19:16,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884263227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:16,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:16,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:16,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290755343] [2024-06-28 03:19:16,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:16,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:16,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:16,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:16,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 435 transitions, 6216 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:16,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:16,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:16,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:17,016 INFO L124 PetriNetUnfolderBase]: 1013/1725 cut-off events. [2024-06-28 03:19:17,016 INFO L125 PetriNetUnfolderBase]: For 263544/263544 co-relation queries the response was YES. [2024-06-28 03:19:17,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16259 conditions, 1725 events. 1013/1725 cut-off events. For 263544/263544 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9049 event pairs, 84 based on Foata normal form. 1/1726 useless extension candidates. Maximal degree in co-relation 16101. Up to 1329 conditions per place. [2024-06-28 03:19:17,038 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 297 selfloop transitions, 153 changer transitions 0/452 dead transitions. [2024-06-28 03:19:17,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 452 transitions, 7579 flow [2024-06-28 03:19:17,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:17,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 03:19:17,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-28 03:19:17,039 INFO L175 Difference]: Start difference. First operand has 396 places, 435 transitions, 6216 flow. Second operand 10 states and 129 transitions. [2024-06-28 03:19:17,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 452 transitions, 7579 flow [2024-06-28 03:19:18,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 452 transitions, 7349 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:18,012 INFO L231 Difference]: Finished difference. Result has 398 places, 437 transitions, 6342 flow [2024-06-28 03:19:18,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5998, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6342, PETRI_PLACES=398, PETRI_TRANSITIONS=437} [2024-06-28 03:19:18,012 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 366 predicate places. [2024-06-28 03:19:18,012 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 437 transitions, 6342 flow [2024-06-28 03:19:18,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:18,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:18,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:18,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:19:18,013 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:18,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash 719540931, now seen corresponding path program 13 times [2024-06-28 03:19:18,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:18,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137358564] [2024-06-28 03:19:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:18,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:18,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:18,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137358564] [2024-06-28 03:19:18,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137358564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:18,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:18,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:18,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688810963] [2024-06-28 03:19:18,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:18,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:18,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:18,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:18,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:19,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:19:19,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 437 transitions, 6342 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:19,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:19,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:19:19,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:19,460 INFO L124 PetriNetUnfolderBase]: 976/1690 cut-off events. [2024-06-28 03:19:19,460 INFO L125 PetriNetUnfolderBase]: For 260750/260750 co-relation queries the response was YES. [2024-06-28 03:19:19,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16055 conditions, 1690 events. 976/1690 cut-off events. For 260750/260750 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9041 event pairs, 79 based on Foata normal form. 1/1691 useless extension candidates. Maximal degree in co-relation 15898. Up to 1354 conditions per place. [2024-06-28 03:19:19,481 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 296 selfloop transitions, 91 changer transitions 0/452 dead transitions. [2024-06-28 03:19:19,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 452 transitions, 7188 flow [2024-06-28 03:19:19,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:19,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 03:19:19,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-28 03:19:19,482 INFO L175 Difference]: Start difference. First operand has 398 places, 437 transitions, 6342 flow. Second operand 10 states and 129 transitions. [2024-06-28 03:19:19,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 452 transitions, 7188 flow [2024-06-28 03:19:20,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 452 transitions, 6808 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 03:19:20,529 INFO L231 Difference]: Finished difference. Result has 398 places, 439 transitions, 6199 flow [2024-06-28 03:19:20,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5962, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6199, PETRI_PLACES=398, PETRI_TRANSITIONS=439} [2024-06-28 03:19:20,529 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 366 predicate places. [2024-06-28 03:19:20,529 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 439 transitions, 6199 flow [2024-06-28 03:19:20,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:20,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:20,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:20,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:19:20,529 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:20,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash -138738798, now seen corresponding path program 26 times [2024-06-28 03:19:20,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:20,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518060870] [2024-06-28 03:19:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:20,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:21,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:21,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518060870] [2024-06-28 03:19:21,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518060870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:21,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:21,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:21,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192553571] [2024-06-28 03:19:21,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:21,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:21,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:21,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:21,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:21,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:21,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 439 transitions, 6199 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:21,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:21,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:21,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:21,701 INFO L124 PetriNetUnfolderBase]: 1014/1727 cut-off events. [2024-06-28 03:19:21,701 INFO L125 PetriNetUnfolderBase]: For 249179/249179 co-relation queries the response was YES. [2024-06-28 03:19:21,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15978 conditions, 1727 events. 1014/1727 cut-off events. For 249179/249179 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9073 event pairs, 83 based on Foata normal form. 1/1728 useless extension candidates. Maximal degree in co-relation 15822. Up to 1332 conditions per place. [2024-06-28 03:19:21,722 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 295 selfloop transitions, 156 changer transitions 0/453 dead transitions. [2024-06-28 03:19:21,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 453 transitions, 7329 flow [2024-06-28 03:19:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 03:19:21,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-28 03:19:21,723 INFO L175 Difference]: Start difference. First operand has 398 places, 439 transitions, 6199 flow. Second operand 10 states and 127 transitions. [2024-06-28 03:19:21,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 453 transitions, 7329 flow [2024-06-28 03:19:22,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 453 transitions, 7104 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:22,664 INFO L231 Difference]: Finished difference. Result has 400 places, 439 transitions, 6301 flow [2024-06-28 03:19:22,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5978, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6301, PETRI_PLACES=400, PETRI_TRANSITIONS=439} [2024-06-28 03:19:22,664 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 368 predicate places. [2024-06-28 03:19:22,664 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 439 transitions, 6301 flow [2024-06-28 03:19:22,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:22,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:22,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:22,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:19:22,665 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:22,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:22,665 INFO L85 PathProgramCache]: Analyzing trace with hash -138733001, now seen corresponding path program 19 times [2024-06-28 03:19:22,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:22,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369746871] [2024-06-28 03:19:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:22,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:23,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:23,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369746871] [2024-06-28 03:19:23,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369746871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:23,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:23,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:23,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828213219] [2024-06-28 03:19:23,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:23,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:23,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:23,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:23,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:23,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:23,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 439 transitions, 6301 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:23,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:23,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:23,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:23,938 INFO L124 PetriNetUnfolderBase]: 1008/1721 cut-off events. [2024-06-28 03:19:23,938 INFO L125 PetriNetUnfolderBase]: For 239852/239852 co-relation queries the response was YES. [2024-06-28 03:19:23,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15653 conditions, 1721 events. 1008/1721 cut-off events. For 239852/239852 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9057 event pairs, 98 based on Foata normal form. 3/1724 useless extension candidates. Maximal degree in co-relation 15496. Up to 1014 conditions per place. [2024-06-28 03:19:23,960 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 301 selfloop transitions, 166 changer transitions 0/469 dead transitions. [2024-06-28 03:19:23,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 469 transitions, 7616 flow [2024-06-28 03:19:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-28 03:19:23,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-28 03:19:23,961 INFO L175 Difference]: Start difference. First operand has 400 places, 439 transitions, 6301 flow. Second operand 10 states and 139 transitions. [2024-06-28 03:19:23,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 469 transitions, 7616 flow [2024-06-28 03:19:25,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 469 transitions, 7275 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 03:19:25,030 INFO L231 Difference]: Finished difference. Result has 399 places, 439 transitions, 6310 flow [2024-06-28 03:19:25,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5964, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6310, PETRI_PLACES=399, PETRI_TRANSITIONS=439} [2024-06-28 03:19:25,030 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 367 predicate places. [2024-06-28 03:19:25,030 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 439 transitions, 6310 flow [2024-06-28 03:19:25,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:25,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:25,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:25,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:19:25,030 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:25,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:25,031 INFO L85 PathProgramCache]: Analyzing trace with hash -19297600, now seen corresponding path program 27 times [2024-06-28 03:19:25,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:25,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577874993] [2024-06-28 03:19:25,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:25,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:25,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:25,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577874993] [2024-06-28 03:19:25,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577874993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:25,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:25,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:25,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442621767] [2024-06-28 03:19:25,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:25,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:25,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:25,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 439 transitions, 6310 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:25,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:25,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:25,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:26,168 INFO L124 PetriNetUnfolderBase]: 1016/1731 cut-off events. [2024-06-28 03:19:26,168 INFO L125 PetriNetUnfolderBase]: For 231471/231471 co-relation queries the response was YES. [2024-06-28 03:19:26,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15868 conditions, 1731 events. 1016/1731 cut-off events. For 231471/231471 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9113 event pairs, 85 based on Foata normal form. 1/1732 useless extension candidates. Maximal degree in co-relation 15712. Up to 1333 conditions per place. [2024-06-28 03:19:26,189 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 284 selfloop transitions, 170 changer transitions 0/456 dead transitions. [2024-06-28 03:19:26,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 456 transitions, 7686 flow [2024-06-28 03:19:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 03:19:26,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:19:26,190 INFO L175 Difference]: Start difference. First operand has 399 places, 439 transitions, 6310 flow. Second operand 10 states and 125 transitions. [2024-06-28 03:19:26,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 456 transitions, 7686 flow [2024-06-28 03:19:27,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 456 transitions, 7244 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 03:19:27,180 INFO L231 Difference]: Finished difference. Result has 397 places, 443 transitions, 6282 flow [2024-06-28 03:19:27,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5876, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6282, PETRI_PLACES=397, PETRI_TRANSITIONS=443} [2024-06-28 03:19:27,180 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 365 predicate places. [2024-06-28 03:19:27,180 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 443 transitions, 6282 flow [2024-06-28 03:19:27,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:27,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:27,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:27,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:19:27,181 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:27,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash 920837943, now seen corresponding path program 20 times [2024-06-28 03:19:27,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:27,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719808285] [2024-06-28 03:19:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:27,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:27,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:27,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719808285] [2024-06-28 03:19:27,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719808285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:27,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:27,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:27,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242585453] [2024-06-28 03:19:27,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:27,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:27,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:27,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:27,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:27,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:27,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 443 transitions, 6282 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:27,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:27,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:27,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:28,431 INFO L124 PetriNetUnfolderBase]: 1055/1795 cut-off events. [2024-06-28 03:19:28,432 INFO L125 PetriNetUnfolderBase]: For 261164/261164 co-relation queries the response was YES. [2024-06-28 03:19:28,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16671 conditions, 1795 events. 1055/1795 cut-off events. For 261164/261164 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9487 event pairs, 78 based on Foata normal form. 3/1798 useless extension candidates. Maximal degree in co-relation 16516. Up to 1059 conditions per place. [2024-06-28 03:19:28,453 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 306 selfloop transitions, 173 changer transitions 0/481 dead transitions. [2024-06-28 03:19:28,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 481 transitions, 8131 flow [2024-06-28 03:19:28,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:28,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 03:19:28,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-28 03:19:28,454 INFO L175 Difference]: Start difference. First operand has 397 places, 443 transitions, 6282 flow. Second operand 10 states and 138 transitions. [2024-06-28 03:19:28,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 481 transitions, 8131 flow [2024-06-28 03:19:29,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 481 transitions, 7909 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:29,590 INFO L231 Difference]: Finished difference. Result has 400 places, 452 transitions, 6563 flow [2024-06-28 03:19:29,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6066, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6563, PETRI_PLACES=400, PETRI_TRANSITIONS=452} [2024-06-28 03:19:29,590 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 368 predicate places. [2024-06-28 03:19:29,590 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 452 transitions, 6563 flow [2024-06-28 03:19:29,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:29,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:29,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:29,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:19:29,591 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:29,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:29,591 INFO L85 PathProgramCache]: Analyzing trace with hash 921104853, now seen corresponding path program 21 times [2024-06-28 03:19:29,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:29,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888698743] [2024-06-28 03:19:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:29,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:30,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:30,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888698743] [2024-06-28 03:19:30,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888698743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:30,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:30,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:30,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897939700] [2024-06-28 03:19:30,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:30,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:30,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:30,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:30,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:30,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:30,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 452 transitions, 6563 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:30,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:30,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:30,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:30,877 INFO L124 PetriNetUnfolderBase]: 1064/1810 cut-off events. [2024-06-28 03:19:30,877 INFO L125 PetriNetUnfolderBase]: For 262092/262092 co-relation queries the response was YES. [2024-06-28 03:19:30,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16916 conditions, 1810 events. 1064/1810 cut-off events. For 262092/262092 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9591 event pairs, 82 based on Foata normal form. 3/1813 useless extension candidates. Maximal degree in co-relation 16761. Up to 1067 conditions per place. [2024-06-28 03:19:30,897 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 287 selfloop transitions, 191 changer transitions 0/480 dead transitions. [2024-06-28 03:19:30,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 480 transitions, 8103 flow [2024-06-28 03:19:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 03:19:30,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-28 03:19:30,897 INFO L175 Difference]: Start difference. First operand has 400 places, 452 transitions, 6563 flow. Second operand 10 states and 134 transitions. [2024-06-28 03:19:30,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 480 transitions, 8103 flow [2024-06-28 03:19:32,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 480 transitions, 7877 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:32,014 INFO L231 Difference]: Finished difference. Result has 404 places, 455 transitions, 6788 flow [2024-06-28 03:19:32,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6348, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6788, PETRI_PLACES=404, PETRI_TRANSITIONS=455} [2024-06-28 03:19:32,014 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places. [2024-06-28 03:19:32,014 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 455 transitions, 6788 flow [2024-06-28 03:19:32,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:32,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:32,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:32,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:19:32,015 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:32,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:32,015 INFO L85 PathProgramCache]: Analyzing trace with hash 920845383, now seen corresponding path program 22 times [2024-06-28 03:19:32,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:32,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334911028] [2024-06-28 03:19:32,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:32,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:32,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:32,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334911028] [2024-06-28 03:19:32,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334911028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:32,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:32,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:32,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127984961] [2024-06-28 03:19:32,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:32,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:32,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:32,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:32,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:32,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:32,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 455 transitions, 6788 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:32,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:32,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:32,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:33,246 INFO L124 PetriNetUnfolderBase]: 1058/1801 cut-off events. [2024-06-28 03:19:33,246 INFO L125 PetriNetUnfolderBase]: For 250014/250014 co-relation queries the response was YES. [2024-06-28 03:19:33,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16649 conditions, 1801 events. 1058/1801 cut-off events. For 250014/250014 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9546 event pairs, 77 based on Foata normal form. 3/1804 useless extension candidates. Maximal degree in co-relation 16494. Up to 1063 conditions per place. [2024-06-28 03:19:33,269 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 313 selfloop transitions, 172 changer transitions 0/487 dead transitions. [2024-06-28 03:19:33,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 487 transitions, 8371 flow [2024-06-28 03:19:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 03:19:33,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-28 03:19:33,270 INFO L175 Difference]: Start difference. First operand has 404 places, 455 transitions, 6788 flow. Second operand 10 states and 138 transitions. [2024-06-28 03:19:33,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 487 transitions, 8371 flow [2024-06-28 03:19:34,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 487 transitions, 8064 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:34,406 INFO L231 Difference]: Finished difference. Result has 406 places, 455 transitions, 6841 flow [2024-06-28 03:19:34,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6485, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6841, PETRI_PLACES=406, PETRI_TRANSITIONS=455} [2024-06-28 03:19:34,407 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-28 03:19:34,407 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 455 transitions, 6841 flow [2024-06-28 03:19:34,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:34,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:34,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:34,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:19:34,407 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:34,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:34,408 INFO L85 PathProgramCache]: Analyzing trace with hash 913695543, now seen corresponding path program 23 times [2024-06-28 03:19:34,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:34,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471480933] [2024-06-28 03:19:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:34,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:35,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:35,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471480933] [2024-06-28 03:19:35,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471480933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:35,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:35,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:35,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839405601] [2024-06-28 03:19:35,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:35,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:35,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:35,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:35,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:35,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:35,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 455 transitions, 6841 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:35,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:35,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:35,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:35,626 INFO L124 PetriNetUnfolderBase]: 1067/1816 cut-off events. [2024-06-28 03:19:35,627 INFO L125 PetriNetUnfolderBase]: For 251810/251810 co-relation queries the response was YES. [2024-06-28 03:19:35,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16740 conditions, 1816 events. 1067/1816 cut-off events. For 251810/251810 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9660 event pairs, 77 based on Foata normal form. 3/1819 useless extension candidates. Maximal degree in co-relation 16585. Up to 1071 conditions per place. [2024-06-28 03:19:35,648 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 321 selfloop transitions, 167 changer transitions 0/490 dead transitions. [2024-06-28 03:19:35,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 490 transitions, 8481 flow [2024-06-28 03:19:35,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-28 03:19:35,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-28 03:19:35,649 INFO L175 Difference]: Start difference. First operand has 406 places, 455 transitions, 6841 flow. Second operand 10 states and 139 transitions. [2024-06-28 03:19:35,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 490 transitions, 8481 flow [2024-06-28 03:19:36,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 490 transitions, 8104 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:19:36,711 INFO L231 Difference]: Finished difference. Result has 406 places, 458 transitions, 6865 flow [2024-06-28 03:19:36,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6474, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6865, PETRI_PLACES=406, PETRI_TRANSITIONS=458} [2024-06-28 03:19:36,712 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-28 03:19:36,712 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 458 transitions, 6865 flow [2024-06-28 03:19:36,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:36,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:36,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:36,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:19:36,712 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:36,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:36,712 INFO L85 PathProgramCache]: Analyzing trace with hash 913688103, now seen corresponding path program 24 times [2024-06-28 03:19:36,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:36,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624637338] [2024-06-28 03:19:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:36,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:37,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:37,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624637338] [2024-06-28 03:19:37,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624637338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:37,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:37,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:37,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841409816] [2024-06-28 03:19:37,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:37,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:37,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:37,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:37,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:37,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 458 transitions, 6865 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:37,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:37,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:37,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:37,975 INFO L124 PetriNetUnfolderBase]: 1076/1831 cut-off events. [2024-06-28 03:19:37,975 INFO L125 PetriNetUnfolderBase]: For 251968/251968 co-relation queries the response was YES. [2024-06-28 03:19:37,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16808 conditions, 1831 events. 1076/1831 cut-off events. For 251968/251968 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9741 event pairs, 78 based on Foata normal form. 3/1834 useless extension candidates. Maximal degree in co-relation 16653. Up to 1079 conditions per place. [2024-06-28 03:19:37,999 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 326 selfloop transitions, 168 changer transitions 0/496 dead transitions. [2024-06-28 03:19:37,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 496 transitions, 8546 flow [2024-06-28 03:19:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:37,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:38,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-28 03:19:38,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-28 03:19:38,000 INFO L175 Difference]: Start difference. First operand has 406 places, 458 transitions, 6865 flow. Second operand 10 states and 142 transitions. [2024-06-28 03:19:38,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 496 transitions, 8546 flow [2024-06-28 03:19:39,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 496 transitions, 8018 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:19:39,022 INFO L231 Difference]: Finished difference. Result has 406 places, 461 transitions, 6738 flow [2024-06-28 03:19:39,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6350, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6738, PETRI_PLACES=406, PETRI_TRANSITIONS=461} [2024-06-28 03:19:39,022 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-28 03:19:39,022 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 461 transitions, 6738 flow [2024-06-28 03:19:39,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:39,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:39,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:39,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:19:39,022 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:39,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:39,022 INFO L85 PathProgramCache]: Analyzing trace with hash 913687886, now seen corresponding path program 28 times [2024-06-28 03:19:39,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:39,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046036367] [2024-06-28 03:19:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:39,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:39,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:39,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046036367] [2024-06-28 03:19:39,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046036367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:39,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:39,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:39,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424912158] [2024-06-28 03:19:39,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:39,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:39,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:39,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:39,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:39,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 461 transitions, 6738 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:39,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:39,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:39,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:40,221 INFO L124 PetriNetUnfolderBase]: 1079/1835 cut-off events. [2024-06-28 03:19:40,221 INFO L125 PetriNetUnfolderBase]: For 240853/240853 co-relation queries the response was YES. [2024-06-28 03:19:40,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16779 conditions, 1835 events. 1079/1835 cut-off events. For 240853/240853 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9781 event pairs, 94 based on Foata normal form. 1/1836 useless extension candidates. Maximal degree in co-relation 16624. Up to 1436 conditions per place. [2024-06-28 03:19:40,245 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 324 selfloop transitions, 150 changer transitions 0/476 dead transitions. [2024-06-28 03:19:40,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 476 transitions, 8121 flow [2024-06-28 03:19:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 03:19:40,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-28 03:19:40,246 INFO L175 Difference]: Start difference. First operand has 406 places, 461 transitions, 6738 flow. Second operand 10 states and 128 transitions. [2024-06-28 03:19:40,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 476 transitions, 8121 flow [2024-06-28 03:19:41,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 476 transitions, 7797 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:41,363 INFO L231 Difference]: Finished difference. Result has 408 places, 463 transitions, 6755 flow [2024-06-28 03:19:41,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6418, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6755, PETRI_PLACES=408, PETRI_TRANSITIONS=463} [2024-06-28 03:19:41,364 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 376 predicate places. [2024-06-28 03:19:41,364 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 463 transitions, 6755 flow [2024-06-28 03:19:41,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:41,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:41,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:41,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:19:41,365 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:41,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:41,365 INFO L85 PathProgramCache]: Analyzing trace with hash 913486076, now seen corresponding path program 29 times [2024-06-28 03:19:41,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:41,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901498203] [2024-06-28 03:19:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:41,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:42,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:42,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901498203] [2024-06-28 03:19:42,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901498203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:42,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:42,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:42,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579927328] [2024-06-28 03:19:42,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:42,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:42,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:42,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:42,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:42,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 463 transitions, 6755 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:42,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:42,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:42,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:42,591 INFO L124 PetriNetUnfolderBase]: 1082/1840 cut-off events. [2024-06-28 03:19:42,591 INFO L125 PetriNetUnfolderBase]: For 240669/240669 co-relation queries the response was YES. [2024-06-28 03:19:42,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16718 conditions, 1840 events. 1082/1840 cut-off events. For 240669/240669 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9815 event pairs, 94 based on Foata normal form. 1/1841 useless extension candidates. Maximal degree in co-relation 16563. Up to 1440 conditions per place. [2024-06-28 03:19:42,614 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 322 selfloop transitions, 154 changer transitions 0/478 dead transitions. [2024-06-28 03:19:42,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 478 transitions, 8146 flow [2024-06-28 03:19:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:42,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:42,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 03:19:42,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-28 03:19:42,615 INFO L175 Difference]: Start difference. First operand has 408 places, 463 transitions, 6755 flow. Second operand 10 states and 127 transitions. [2024-06-28 03:19:42,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 478 transitions, 8146 flow [2024-06-28 03:19:43,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 478 transitions, 7728 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 03:19:43,674 INFO L231 Difference]: Finished difference. Result has 409 places, 465 transitions, 6690 flow [2024-06-28 03:19:43,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6349, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6690, PETRI_PLACES=409, PETRI_TRANSITIONS=465} [2024-06-28 03:19:43,675 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 377 predicate places. [2024-06-28 03:19:43,675 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 465 transitions, 6690 flow [2024-06-28 03:19:43,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:43,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:43,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:43,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:19:43,676 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:43,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:43,676 INFO L85 PathProgramCache]: Analyzing trace with hash 913486293, now seen corresponding path program 25 times [2024-06-28 03:19:43,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:43,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137681942] [2024-06-28 03:19:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:43,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:44,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:44,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137681942] [2024-06-28 03:19:44,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137681942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:44,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:44,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:44,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894348522] [2024-06-28 03:19:44,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:44,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:44,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:44,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:44,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 465 transitions, 6690 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:44,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:44,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:44,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:44,970 INFO L124 PetriNetUnfolderBase]: 1076/1832 cut-off events. [2024-06-28 03:19:44,970 INFO L125 PetriNetUnfolderBase]: For 236166/236166 co-relation queries the response was YES. [2024-06-28 03:19:44,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16332 conditions, 1832 events. 1076/1832 cut-off events. For 236166/236166 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9773 event pairs, 71 based on Foata normal form. 3/1835 useless extension candidates. Maximal degree in co-relation 16177. Up to 1085 conditions per place. [2024-06-28 03:19:44,992 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 312 selfloop transitions, 178 changer transitions 0/492 dead transitions. [2024-06-28 03:19:44,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 492 transitions, 8040 flow [2024-06-28 03:19:44,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 03:19:44,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-28 03:19:44,993 INFO L175 Difference]: Start difference. First operand has 409 places, 465 transitions, 6690 flow. Second operand 10 states and 137 transitions. [2024-06-28 03:19:44,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 492 transitions, 8040 flow [2024-06-28 03:19:45,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 492 transitions, 7707 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:19:45,970 INFO L231 Difference]: Finished difference. Result has 410 places, 465 transitions, 6725 flow [2024-06-28 03:19:45,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6359, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6725, PETRI_PLACES=410, PETRI_TRANSITIONS=465} [2024-06-28 03:19:45,970 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 378 predicate places. [2024-06-28 03:19:45,970 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 465 transitions, 6725 flow [2024-06-28 03:19:45,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:45,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:45,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:45,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:19:45,971 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:45,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash 913480341, now seen corresponding path program 14 times [2024-06-28 03:19:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:45,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643093788] [2024-06-28 03:19:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:45,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:46,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:46,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:46,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643093788] [2024-06-28 03:19:46,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643093788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:46,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:46,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:46,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304852580] [2024-06-28 03:19:46,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:46,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:46,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:46,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:46,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:19:46,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 465 transitions, 6725 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:46,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:46,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:19:46,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:47,388 INFO L124 PetriNetUnfolderBase]: 1037/1794 cut-off events. [2024-06-28 03:19:47,388 INFO L125 PetriNetUnfolderBase]: For 228955/228955 co-relation queries the response was YES. [2024-06-28 03:19:47,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16251 conditions, 1794 events. 1037/1794 cut-off events. For 228955/228955 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9765 event pairs, 89 based on Foata normal form. 1/1795 useless extension candidates. Maximal degree in co-relation 16096. Up to 1453 conditions per place. [2024-06-28 03:19:47,409 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 324 selfloop transitions, 85 changer transitions 0/478 dead transitions. [2024-06-28 03:19:47,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 478 transitions, 7605 flow [2024-06-28 03:19:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 03:19:47,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-28 03:19:47,410 INFO L175 Difference]: Start difference. First operand has 410 places, 465 transitions, 6725 flow. Second operand 10 states and 127 transitions. [2024-06-28 03:19:47,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 478 transitions, 7605 flow [2024-06-28 03:19:48,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 478 transitions, 7207 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 03:19:48,489 INFO L231 Difference]: Finished difference. Result has 409 places, 467 transitions, 6545 flow [2024-06-28 03:19:48,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6327, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6545, PETRI_PLACES=409, PETRI_TRANSITIONS=467} [2024-06-28 03:19:48,490 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 377 predicate places. [2024-06-28 03:19:48,490 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 467 transitions, 6545 flow [2024-06-28 03:19:48,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:48,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:48,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:48,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:19:48,490 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:48,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash 913480496, now seen corresponding path program 30 times [2024-06-28 03:19:48,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:48,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613997377] [2024-06-28 03:19:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:48,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:49,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:49,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613997377] [2024-06-28 03:19:49,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613997377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:49,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:49,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:49,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088033682] [2024-06-28 03:19:49,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:49,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:49,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:49,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:49,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:49,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:49,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 467 transitions, 6545 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:49,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:49,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:49,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:49,676 INFO L124 PetriNetUnfolderBase]: 1077/1833 cut-off events. [2024-06-28 03:19:49,676 INFO L125 PetriNetUnfolderBase]: For 221869/221869 co-relation queries the response was YES. [2024-06-28 03:19:49,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16132 conditions, 1833 events. 1077/1833 cut-off events. For 221869/221869 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9779 event pairs, 92 based on Foata normal form. 1/1834 useless extension candidates. Maximal degree in co-relation 15977. Up to 1434 conditions per place. [2024-06-28 03:19:49,698 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 319 selfloop transitions, 158 changer transitions 0/479 dead transitions. [2024-06-28 03:19:49,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 479 transitions, 7715 flow [2024-06-28 03:19:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:49,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 03:19:49,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:19:49,699 INFO L175 Difference]: Start difference. First operand has 409 places, 467 transitions, 6545 flow. Second operand 10 states and 125 transitions. [2024-06-28 03:19:49,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 479 transitions, 7715 flow [2024-06-28 03:19:50,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 479 transitions, 7507 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:50,704 INFO L231 Difference]: Finished difference. Result has 411 places, 467 transitions, 6663 flow [2024-06-28 03:19:50,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6339, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6663, PETRI_PLACES=411, PETRI_TRANSITIONS=467} [2024-06-28 03:19:50,704 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 379 predicate places. [2024-06-28 03:19:50,704 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 467 transitions, 6663 flow [2024-06-28 03:19:50,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:50,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:50,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:50,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:19:50,704 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:50,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:50,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1455351561, now seen corresponding path program 26 times [2024-06-28 03:19:50,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:50,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525300893] [2024-06-28 03:19:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:50,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:51,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:51,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525300893] [2024-06-28 03:19:51,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525300893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:51,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:51,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:51,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797078369] [2024-06-28 03:19:51,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:51,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:51,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:51,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:51,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:51,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:51,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 467 transitions, 6663 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:51,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:51,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:51,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:51,928 INFO L124 PetriNetUnfolderBase]: 1086/1851 cut-off events. [2024-06-28 03:19:51,928 INFO L125 PetriNetUnfolderBase]: For 231329/231329 co-relation queries the response was YES. [2024-06-28 03:19:51,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16326 conditions, 1851 events. 1086/1851 cut-off events. For 231329/231329 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9925 event pairs, 267 based on Foata normal form. 3/1854 useless extension candidates. Maximal degree in co-relation 16170. Up to 1791 conditions per place. [2024-06-28 03:19:51,951 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 463 selfloop transitions, 20 changer transitions 0/485 dead transitions. [2024-06-28 03:19:51,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 485 transitions, 7753 flow [2024-06-28 03:19:51,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:19:51,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-28 03:19:51,951 INFO L175 Difference]: Start difference. First operand has 411 places, 467 transitions, 6663 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:19:51,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 485 transitions, 7753 flow [2024-06-28 03:19:52,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 485 transitions, 7424 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:19:52,990 INFO L231 Difference]: Finished difference. Result has 411 places, 470 transitions, 6437 flow [2024-06-28 03:19:52,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6334, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6437, PETRI_PLACES=411, PETRI_TRANSITIONS=470} [2024-06-28 03:19:52,990 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 379 predicate places. [2024-06-28 03:19:52,990 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 470 transitions, 6437 flow [2024-06-28 03:19:52,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:52,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:52,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:52,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:19:52,992 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:52,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:52,993 INFO L85 PathProgramCache]: Analyzing trace with hash -227934065, now seen corresponding path program 27 times [2024-06-28 03:19:52,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:52,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839266824] [2024-06-28 03:19:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:52,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:53,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:53,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839266824] [2024-06-28 03:19:53,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839266824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:53,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:53,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:53,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495442445] [2024-06-28 03:19:53,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:53,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:53,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:53,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:53,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 470 transitions, 6437 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:53,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:53,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:53,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:54,222 INFO L124 PetriNetUnfolderBase]: 1110/1890 cut-off events. [2024-06-28 03:19:54,222 INFO L125 PetriNetUnfolderBase]: For 244692/244692 co-relation queries the response was YES. [2024-06-28 03:19:54,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16604 conditions, 1890 events. 1110/1890 cut-off events. For 244692/244692 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10169 event pairs, 267 based on Foata normal form. 3/1893 useless extension candidates. Maximal degree in co-relation 16448. Up to 1757 conditions per place. [2024-06-28 03:19:54,244 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 464 selfloop transitions, 32 changer transitions 0/498 dead transitions. [2024-06-28 03:19:54,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 498 transitions, 7880 flow [2024-06-28 03:19:54,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:54,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:19:54,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-28 03:19:54,245 INFO L175 Difference]: Start difference. First operand has 411 places, 470 transitions, 6437 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:19:54,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 498 transitions, 7880 flow [2024-06-28 03:19:55,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 498 transitions, 7831 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:55,277 INFO L231 Difference]: Finished difference. Result has 413 places, 476 transitions, 6577 flow [2024-06-28 03:19:55,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6388, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6577, PETRI_PLACES=413, PETRI_TRANSITIONS=476} [2024-06-28 03:19:55,277 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 381 predicate places. [2024-06-28 03:19:55,278 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 476 transitions, 6577 flow [2024-06-28 03:19:55,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:55,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:55,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:55,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:19:55,278 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:55,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash -476095443, now seen corresponding path program 28 times [2024-06-28 03:19:55,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:55,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973639291] [2024-06-28 03:19:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:55,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:55,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:55,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973639291] [2024-06-28 03:19:55,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973639291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:55,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:55,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:55,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003040684] [2024-06-28 03:19:55,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:55,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:55,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:55,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:55,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:56,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:56,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 476 transitions, 6577 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:56,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:56,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:56,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:56,491 INFO L124 PetriNetUnfolderBase]: 1119/1905 cut-off events. [2024-06-28 03:19:56,491 INFO L125 PetriNetUnfolderBase]: For 249842/249842 co-relation queries the response was YES. [2024-06-28 03:19:56,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16807 conditions, 1905 events. 1119/1905 cut-off events. For 249842/249842 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10290 event pairs, 273 based on Foata normal form. 3/1908 useless extension candidates. Maximal degree in co-relation 16650. Up to 1662 conditions per place. [2024-06-28 03:19:56,514 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 449 selfloop transitions, 51 changer transitions 0/502 dead transitions. [2024-06-28 03:19:56,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 502 transitions, 8172 flow [2024-06-28 03:19:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 03:19:56,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-28 03:19:56,515 INFO L175 Difference]: Start difference. First operand has 413 places, 476 transitions, 6577 flow. Second operand 10 states and 127 transitions. [2024-06-28 03:19:56,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 502 transitions, 8172 flow [2024-06-28 03:19:57,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 502 transitions, 8115 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:57,632 INFO L231 Difference]: Finished difference. Result has 417 places, 479 transitions, 6691 flow [2024-06-28 03:19:57,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6520, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6691, PETRI_PLACES=417, PETRI_TRANSITIONS=479} [2024-06-28 03:19:57,632 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 385 predicate places. [2024-06-28 03:19:57,632 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 479 transitions, 6691 flow [2024-06-28 03:19:57,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:57,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:57,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:57,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:19:57,633 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:19:57,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash -476354913, now seen corresponding path program 29 times [2024-06-28 03:19:57,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:57,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002668705] [2024-06-28 03:19:57,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:57,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:58,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:58,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002668705] [2024-06-28 03:19:58,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002668705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:58,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:58,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:58,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883225946] [2024-06-28 03:19:58,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:58,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:58,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:58,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:58,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:58,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:19:58,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 479 transitions, 6691 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:58,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:58,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:19:58,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:58,915 INFO L124 PetriNetUnfolderBase]: 1143/1944 cut-off events. [2024-06-28 03:19:58,915 INFO L125 PetriNetUnfolderBase]: For 270066/270066 co-relation queries the response was YES. [2024-06-28 03:19:58,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17521 conditions, 1944 events. 1143/1944 cut-off events. For 270066/270066 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10502 event pairs, 275 based on Foata normal form. 3/1947 useless extension candidates. Maximal degree in co-relation 17362. Up to 1682 conditions per place. [2024-06-28 03:19:58,939 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 457 selfloop transitions, 54 changer transitions 0/513 dead transitions. [2024-06-28 03:19:58,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 513 transitions, 8626 flow [2024-06-28 03:19:58,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:19:58,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:19:58,940 INFO L175 Difference]: Start difference. First operand has 417 places, 479 transitions, 6691 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:19:58,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 513 transitions, 8626 flow [2024-06-28 03:20:00,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 513 transitions, 8396 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 03:20:00,078 INFO L231 Difference]: Finished difference. Result has 418 places, 485 transitions, 6712 flow [2024-06-28 03:20:00,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6501, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6712, PETRI_PLACES=418, PETRI_TRANSITIONS=485} [2024-06-28 03:20:00,079 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 386 predicate places. [2024-06-28 03:20:00,079 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 485 transitions, 6712 flow [2024-06-28 03:20:00,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:00,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:00,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:00,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:20:00,080 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:00,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:00,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2056845163, now seen corresponding path program 1 times [2024-06-28 03:20:00,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:00,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774603379] [2024-06-28 03:20:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:00,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:00,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:00,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774603379] [2024-06-28 03:20:00,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774603379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:00,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:00,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:00,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074364772] [2024-06-28 03:20:00,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:00,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:00,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:00,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:00,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:01,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:20:01,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 485 transitions, 6712 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:01,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:01,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:20:01,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:01,596 INFO L124 PetriNetUnfolderBase]: 1046/1826 cut-off events. [2024-06-28 03:20:01,596 INFO L125 PetriNetUnfolderBase]: For 267354/267372 co-relation queries the response was YES. [2024-06-28 03:20:01,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16690 conditions, 1826 events. 1046/1826 cut-off events. For 267354/267372 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10219 event pairs, 236 based on Foata normal form. 3/1806 useless extension candidates. Maximal degree in co-relation 16531. Up to 1671 conditions per place. [2024-06-28 03:20:01,618 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 425 selfloop transitions, 18 changer transitions 0/496 dead transitions. [2024-06-28 03:20:01,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 496 transitions, 7650 flow [2024-06-28 03:20:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 03:20:01,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:20:01,619 INFO L175 Difference]: Start difference. First operand has 418 places, 485 transitions, 6712 flow. Second operand 9 states and 108 transitions. [2024-06-28 03:20:01,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 496 transitions, 7650 flow [2024-06-28 03:20:02,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 496 transitions, 7556 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:20:02,698 INFO L231 Difference]: Finished difference. Result has 421 places, 487 transitions, 6696 flow [2024-06-28 03:20:02,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6618, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6696, PETRI_PLACES=421, PETRI_TRANSITIONS=487} [2024-06-28 03:20:02,698 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 389 predicate places. [2024-06-28 03:20:02,698 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 487 transitions, 6696 flow [2024-06-28 03:20:02,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:02,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:02,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:02,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:20:02,699 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:02,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:02,699 INFO L85 PathProgramCache]: Analyzing trace with hash -476362353, now seen corresponding path program 30 times [2024-06-28 03:20:02,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:02,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895894957] [2024-06-28 03:20:02,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:02,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:03,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:03,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895894957] [2024-06-28 03:20:03,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895894957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:03,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:03,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:03,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110468920] [2024-06-28 03:20:03,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:03,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:03,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:03,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:03,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 487 transitions, 6696 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:03,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:03,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:03,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:03,953 INFO L124 PetriNetUnfolderBase]: 1135/1932 cut-off events. [2024-06-28 03:20:03,953 INFO L125 PetriNetUnfolderBase]: For 259784/259784 co-relation queries the response was YES. [2024-06-28 03:20:03,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16950 conditions, 1932 events. 1135/1932 cut-off events. For 259784/259784 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10465 event pairs, 269 based on Foata normal form. 3/1935 useless extension candidates. Maximal degree in co-relation 16790. Up to 1675 conditions per place. [2024-06-28 03:20:03,976 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 454 selfloop transitions, 56 changer transitions 0/512 dead transitions. [2024-06-28 03:20:03,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 512 transitions, 8278 flow [2024-06-28 03:20:03,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:03,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:20:03,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 03:20:03,977 INFO L175 Difference]: Start difference. First operand has 421 places, 487 transitions, 6696 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:20:03,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 512 transitions, 8278 flow [2024-06-28 03:20:04,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 512 transitions, 8214 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:04,865 INFO L231 Difference]: Finished difference. Result has 424 places, 487 transitions, 6750 flow [2024-06-28 03:20:04,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6632, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6750, PETRI_PLACES=424, PETRI_TRANSITIONS=487} [2024-06-28 03:20:04,865 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 392 predicate places. [2024-06-28 03:20:04,865 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 487 transitions, 6750 flow [2024-06-28 03:20:04,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:04,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:04,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:04,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:20:04,866 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:04,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:04,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1912725673, now seen corresponding path program 31 times [2024-06-28 03:20:04,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:04,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228357428] [2024-06-28 03:20:04,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:04,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:05,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228357428] [2024-06-28 03:20:05,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228357428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:05,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:05,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:05,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566055455] [2024-06-28 03:20:05,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:05,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:05,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:05,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:05,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:05,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:05,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 487 transitions, 6750 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:05,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:05,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:05,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:06,283 INFO L124 PetriNetUnfolderBase]: 1144/1947 cut-off events. [2024-06-28 03:20:06,283 INFO L125 PetriNetUnfolderBase]: For 265462/265462 co-relation queries the response was YES. [2024-06-28 03:20:06,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17178 conditions, 1947 events. 1144/1947 cut-off events. For 265462/265462 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10568 event pairs, 275 based on Foata normal form. 3/1950 useless extension candidates. Maximal degree in co-relation 17017. Up to 1807 conditions per place. [2024-06-28 03:20:06,304 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 471 selfloop transitions, 37 changer transitions 0/510 dead transitions. [2024-06-28 03:20:06,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 510 transitions, 8140 flow [2024-06-28 03:20:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 03:20:06,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:20:06,305 INFO L175 Difference]: Start difference. First operand has 424 places, 487 transitions, 6750 flow. Second operand 10 states and 121 transitions. [2024-06-28 03:20:06,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 510 transitions, 8140 flow [2024-06-28 03:20:07,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 510 transitions, 8031 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:07,482 INFO L231 Difference]: Finished difference. Result has 426 places, 490 transitions, 6776 flow [2024-06-28 03:20:07,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6647, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6776, PETRI_PLACES=426, PETRI_TRANSITIONS=490} [2024-06-28 03:20:07,482 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 394 predicate places. [2024-06-28 03:20:07,482 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 490 transitions, 6776 flow [2024-06-28 03:20:07,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:07,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:07,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:07,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 03:20:07,482 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:07,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:07,483 INFO L85 PathProgramCache]: Analyzing trace with hash 763915972, now seen corresponding path program 31 times [2024-06-28 03:20:07,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:07,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472725761] [2024-06-28 03:20:07,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:07,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:08,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:08,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:08,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472725761] [2024-06-28 03:20:08,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472725761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:08,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:08,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:08,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545809627] [2024-06-28 03:20:08,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:08,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:08,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:08,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:08,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:08,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:08,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 490 transitions, 6776 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:08,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:08,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:08,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:08,776 INFO L124 PetriNetUnfolderBase]: 1152/1960 cut-off events. [2024-06-28 03:20:08,776 INFO L125 PetriNetUnfolderBase]: For 265550/265550 co-relation queries the response was YES. [2024-06-28 03:20:08,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17370 conditions, 1960 events. 1152/1960 cut-off events. For 265550/265550 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10633 event pairs, 285 based on Foata normal form. 1/1961 useless extension candidates. Maximal degree in co-relation 17208. Up to 1884 conditions per place. [2024-06-28 03:20:08,801 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 468 selfloop transitions, 35 changer transitions 0/505 dead transitions. [2024-06-28 03:20:08,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 505 transitions, 8268 flow [2024-06-28 03:20:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:20:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:20:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:20:08,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-28 03:20:08,802 INFO L175 Difference]: Start difference. First operand has 426 places, 490 transitions, 6776 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:20:08,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 505 transitions, 8268 flow [2024-06-28 03:20:10,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 505 transitions, 8182 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:10,018 INFO L231 Difference]: Finished difference. Result has 429 places, 494 transitions, 6827 flow [2024-06-28 03:20:10,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6690, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6827, PETRI_PLACES=429, PETRI_TRANSITIONS=494} [2024-06-28 03:20:10,018 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 397 predicate places. [2024-06-28 03:20:10,018 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 494 transitions, 6827 flow [2024-06-28 03:20:10,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:10,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:10,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:10,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 03:20:10,019 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:10,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash 771267622, now seen corresponding path program 32 times [2024-06-28 03:20:10,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:10,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543822701] [2024-06-28 03:20:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:10,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:10,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:10,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543822701] [2024-06-28 03:20:10,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543822701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:10,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:10,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:10,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744373128] [2024-06-28 03:20:10,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:10,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:10,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:10,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:10,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:10,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:10,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 494 transitions, 6827 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:10,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:10,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:10,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:11,299 INFO L124 PetriNetUnfolderBase]: 1160/1973 cut-off events. [2024-06-28 03:20:11,299 INFO L125 PetriNetUnfolderBase]: For 275815/275815 co-relation queries the response was YES. [2024-06-28 03:20:11,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17593 conditions, 1973 events. 1160/1973 cut-off events. For 275815/275815 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10752 event pairs, 285 based on Foata normal form. 1/1974 useless extension candidates. Maximal degree in co-relation 17430. Up to 1894 conditions per place. [2024-06-28 03:20:11,324 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 471 selfloop transitions, 36 changer transitions 0/509 dead transitions. [2024-06-28 03:20:11,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 509 transitions, 8339 flow [2024-06-28 03:20:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:20:11,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:20:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 03:20:11,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-28 03:20:11,325 INFO L175 Difference]: Start difference. First operand has 429 places, 494 transitions, 6827 flow. Second operand 11 states and 124 transitions. [2024-06-28 03:20:11,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 509 transitions, 8339 flow [2024-06-28 03:20:12,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 509 transitions, 8102 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:20:12,557 INFO L231 Difference]: Finished difference. Result has 430 places, 498 transitions, 6737 flow [2024-06-28 03:20:12,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6610, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6737, PETRI_PLACES=430, PETRI_TRANSITIONS=498} [2024-06-28 03:20:12,557 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 398 predicate places. [2024-06-28 03:20:12,557 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 498 transitions, 6737 flow [2024-06-28 03:20:12,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:12,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:12,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:12,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 03:20:12,557 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:12,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:12,557 INFO L85 PathProgramCache]: Analyzing trace with hash 764117782, now seen corresponding path program 33 times [2024-06-28 03:20:12,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047009721] [2024-06-28 03:20:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:12,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:13,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:13,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047009721] [2024-06-28 03:20:13,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047009721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:13,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:13,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:13,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172905273] [2024-06-28 03:20:13,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:13,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:13,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:13,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:13,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:13,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:13,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 498 transitions, 6737 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:13,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:13,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:13,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:13,821 INFO L124 PetriNetUnfolderBase]: 1158/1970 cut-off events. [2024-06-28 03:20:13,821 INFO L125 PetriNetUnfolderBase]: For 274709/274709 co-relation queries the response was YES. [2024-06-28 03:20:13,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17397 conditions, 1970 events. 1158/1970 cut-off events. For 274709/274709 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10728 event pairs, 285 based on Foata normal form. 1/1971 useless extension candidates. Maximal degree in co-relation 17234. Up to 1892 conditions per place. [2024-06-28 03:20:13,846 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 470 selfloop transitions, 37 changer transitions 0/509 dead transitions. [2024-06-28 03:20:13,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 509 transitions, 8183 flow [2024-06-28 03:20:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:20:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:20:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:20:13,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-28 03:20:13,847 INFO L175 Difference]: Start difference. First operand has 430 places, 498 transitions, 6737 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:20:13,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 509 transitions, 8183 flow [2024-06-28 03:20:15,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 509 transitions, 8127 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:15,237 INFO L231 Difference]: Finished difference. Result has 434 places, 498 transitions, 6760 flow [2024-06-28 03:20:15,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6681, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6760, PETRI_PLACES=434, PETRI_TRANSITIONS=498} [2024-06-28 03:20:15,238 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 402 predicate places. [2024-06-28 03:20:15,238 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 498 transitions, 6760 flow [2024-06-28 03:20:15,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:15,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:15,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:15,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 03:20:15,238 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:15,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:15,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1912718016, now seen corresponding path program 34 times [2024-06-28 03:20:15,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:15,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680385891] [2024-06-28 03:20:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:15,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:15,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:15,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680385891] [2024-06-28 03:20:15,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680385891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:15,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:15,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:15,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890538641] [2024-06-28 03:20:15,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:15,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:15,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:15,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:15,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:15,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:15,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 498 transitions, 6760 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:15,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:15,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:15,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:16,515 INFO L124 PetriNetUnfolderBase]: 1156/1967 cut-off events. [2024-06-28 03:20:16,515 INFO L125 PetriNetUnfolderBase]: For 274715/274715 co-relation queries the response was YES. [2024-06-28 03:20:16,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17333 conditions, 1967 events. 1156/1967 cut-off events. For 274715/274715 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10691 event pairs, 285 based on Foata normal form. 1/1968 useless extension candidates. Maximal degree in co-relation 17169. Up to 1933 conditions per place. [2024-06-28 03:20:16,535 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 488 selfloop transitions, 17 changer transitions 0/507 dead transitions. [2024-06-28 03:20:16,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 507 transitions, 7790 flow [2024-06-28 03:20:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:16,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:20:16,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-28 03:20:16,536 INFO L175 Difference]: Start difference. First operand has 434 places, 498 transitions, 6760 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:20:16,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 507 transitions, 7790 flow [2024-06-28 03:20:17,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 507 transitions, 7701 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:20:17,800 INFO L231 Difference]: Finished difference. Result has 435 places, 498 transitions, 6710 flow [2024-06-28 03:20:17,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6671, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6710, PETRI_PLACES=435, PETRI_TRANSITIONS=498} [2024-06-28 03:20:17,800 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 403 predicate places. [2024-06-28 03:20:17,800 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 498 transitions, 6710 flow [2024-06-28 03:20:17,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:17,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:17,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:17,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 03:20:17,801 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:17,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1912718233, now seen corresponding path program 32 times [2024-06-28 03:20:17,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:17,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916676679] [2024-06-28 03:20:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:17,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:18,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:18,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916676679] [2024-06-28 03:20:18,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916676679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:18,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:18,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:18,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823887719] [2024-06-28 03:20:18,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:18,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:18,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:18,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:18,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:18,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:18,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 498 transitions, 6710 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:18,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:18,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:18,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:19,084 INFO L124 PetriNetUnfolderBase]: 1150/1958 cut-off events. [2024-06-28 03:20:19,084 INFO L125 PetriNetUnfolderBase]: For 274318/274318 co-relation queries the response was YES. [2024-06-28 03:20:19,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16967 conditions, 1958 events. 1150/1958 cut-off events. For 274318/274318 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10646 event pairs, 273 based on Foata normal form. 3/1961 useless extension candidates. Maximal degree in co-relation 16802. Up to 1823 conditions per place. [2024-06-28 03:20:19,109 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 472 selfloop transitions, 41 changer transitions 0/515 dead transitions. [2024-06-28 03:20:19,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 515 transitions, 7827 flow [2024-06-28 03:20:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:19,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:20:19,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-28 03:20:19,110 INFO L175 Difference]: Start difference. First operand has 435 places, 498 transitions, 6710 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:20:19,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 515 transitions, 7827 flow [2024-06-28 03:20:20,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 515 transitions, 7737 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 03:20:20,303 INFO L231 Difference]: Finished difference. Result has 434 places, 498 transitions, 6708 flow [2024-06-28 03:20:20,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6620, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6708, PETRI_PLACES=434, PETRI_TRANSITIONS=498} [2024-06-28 03:20:20,304 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 402 predicate places. [2024-06-28 03:20:20,304 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 498 transitions, 6708 flow [2024-06-28 03:20:20,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:20,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:20,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:20,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 03:20:20,304 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:20,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2057231454, now seen corresponding path program 1 times [2024-06-28 03:20:20,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:20,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238182325] [2024-06-28 03:20:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:20,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:21,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:21,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238182325] [2024-06-28 03:20:21,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238182325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:21,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:21,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:21,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015861442] [2024-06-28 03:20:21,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:21,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:21,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:21,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:21,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:21,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:21,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 498 transitions, 6708 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:21,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:21,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:21,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:21,842 INFO L124 PetriNetUnfolderBase]: 1146/1952 cut-off events. [2024-06-28 03:20:21,842 INFO L125 PetriNetUnfolderBase]: For 262719/262719 co-relation queries the response was YES. [2024-06-28 03:20:21,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16814 conditions, 1952 events. 1146/1952 cut-off events. For 262719/262719 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10630 event pairs, 276 based on Foata normal form. 2/1954 useless extension candidates. Maximal degree in co-relation 16648. Up to 1902 conditions per place. [2024-06-28 03:20:21,868 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 488 selfloop transitions, 21 changer transitions 0/511 dead transitions. [2024-06-28 03:20:21,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 511 transitions, 7784 flow [2024-06-28 03:20:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:20:21,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:20:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:20:21,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-28 03:20:21,869 INFO L175 Difference]: Start difference. First operand has 434 places, 498 transitions, 6708 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:20:21,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 511 transitions, 7784 flow [2024-06-28 03:20:23,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 511 transitions, 7698 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:20:23,053 INFO L231 Difference]: Finished difference. Result has 436 places, 500 transitions, 6704 flow [2024-06-28 03:20:23,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6622, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6704, PETRI_PLACES=436, PETRI_TRANSITIONS=500} [2024-06-28 03:20:23,053 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 404 predicate places. [2024-06-28 03:20:23,053 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 500 transitions, 6704 flow [2024-06-28 03:20:23,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:23,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:23,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:23,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 03:20:23,054 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:23,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1657205205, now seen corresponding path program 33 times [2024-06-28 03:20:23,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:23,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222168910] [2024-06-28 03:20:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:23,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:23,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:23,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222168910] [2024-06-28 03:20:23,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222168910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:23,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:23,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:23,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452059773] [2024-06-28 03:20:23,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:23,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:23,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:23,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:23,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:23,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:23,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 500 transitions, 6704 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:23,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:23,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:23,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:24,355 INFO L124 PetriNetUnfolderBase]: 1155/1967 cut-off events. [2024-06-28 03:20:24,355 INFO L125 PetriNetUnfolderBase]: For 273283/273283 co-relation queries the response was YES. [2024-06-28 03:20:24,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16921 conditions, 1967 events. 1155/1967 cut-off events. For 273283/273283 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10745 event pairs, 264 based on Foata normal form. 3/1970 useless extension candidates. Maximal degree in co-relation 16754. Up to 1701 conditions per place. [2024-06-28 03:20:24,381 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 442 selfloop transitions, 77 changer transitions 0/521 dead transitions. [2024-06-28 03:20:24,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 521 transitions, 8101 flow [2024-06-28 03:20:24,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 03:20:24,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-28 03:20:24,381 INFO L175 Difference]: Start difference. First operand has 436 places, 500 transitions, 6704 flow. Second operand 10 states and 124 transitions. [2024-06-28 03:20:24,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 521 transitions, 8101 flow [2024-06-28 03:20:25,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 521 transitions, 8037 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 03:20:25,630 INFO L231 Difference]: Finished difference. Result has 437 places, 503 transitions, 6854 flow [2024-06-28 03:20:25,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6640, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6854, PETRI_PLACES=437, PETRI_TRANSITIONS=503} [2024-06-28 03:20:25,631 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 405 predicate places. [2024-06-28 03:20:25,631 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 503 transitions, 6854 flow [2024-06-28 03:20:25,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:25,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:25,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:25,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 03:20:25,632 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:25,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:25,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1657199408, now seen corresponding path program 35 times [2024-06-28 03:20:25,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:25,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071469500] [2024-06-28 03:20:25,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:25,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:26,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:26,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071469500] [2024-06-28 03:20:26,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071469500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:26,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:26,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:26,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581672730] [2024-06-28 03:20:26,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:26,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:26,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:26,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:26,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:26,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:26,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 503 transitions, 6854 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:26,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:26,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:26,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:26,937 INFO L124 PetriNetUnfolderBase]: 1153/1964 cut-off events. [2024-06-28 03:20:26,937 INFO L125 PetriNetUnfolderBase]: For 261587/261587 co-relation queries the response was YES. [2024-06-28 03:20:26,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16973 conditions, 1964 events. 1153/1964 cut-off events. For 261587/261587 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10721 event pairs, 280 based on Foata normal form. 1/1965 useless extension candidates. Maximal degree in co-relation 16805. Up to 1888 conditions per place. [2024-06-28 03:20:26,961 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 469 selfloop transitions, 41 changer transitions 0/512 dead transitions. [2024-06-28 03:20:26,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 512 transitions, 7894 flow [2024-06-28 03:20:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 03:20:26,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-28 03:20:26,962 INFO L175 Difference]: Start difference. First operand has 437 places, 503 transitions, 6854 flow. Second operand 10 states and 112 transitions. [2024-06-28 03:20:26,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 512 transitions, 7894 flow [2024-06-28 03:20:28,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 512 transitions, 7480 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:20:28,315 INFO L231 Difference]: Finished difference. Result has 438 places, 503 transitions, 6527 flow [2024-06-28 03:20:28,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6440, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6527, PETRI_PLACES=438, PETRI_TRANSITIONS=503} [2024-06-28 03:20:28,315 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 406 predicate places. [2024-06-28 03:20:28,316 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 503 transitions, 6527 flow [2024-06-28 03:20:28,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:28,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:28,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:28,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 03:20:28,316 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:28,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:28,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1657199253, now seen corresponding path program 15 times [2024-06-28 03:20:28,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:28,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100955516] [2024-06-28 03:20:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:28,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:29,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:29,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100955516] [2024-06-28 03:20:29,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100955516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:29,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:29,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:29,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374947438] [2024-06-28 03:20:29,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:29,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:29,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:29,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:29,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:29,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:20:29,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 503 transitions, 6527 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:29,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:29,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:20:29,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:29,783 INFO L124 PetriNetUnfolderBase]: 1105/1915 cut-off events. [2024-06-28 03:20:29,783 INFO L125 PetriNetUnfolderBase]: For 259756/259756 co-relation queries the response was YES. [2024-06-28 03:20:29,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16367 conditions, 1915 events. 1105/1915 cut-off events. For 259756/259756 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10664 event pairs, 256 based on Foata normal form. 1/1916 useless extension candidates. Maximal degree in co-relation 16198. Up to 1732 conditions per place. [2024-06-28 03:20:29,803 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 424 selfloop transitions, 17 changer transitions 0/514 dead transitions. [2024-06-28 03:20:29,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 514 transitions, 7465 flow [2024-06-28 03:20:29,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:29,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 03:20:29,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-28 03:20:29,804 INFO L175 Difference]: Start difference. First operand has 438 places, 503 transitions, 6527 flow. Second operand 10 states and 116 transitions. [2024-06-28 03:20:29,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 514 transitions, 7465 flow [2024-06-28 03:20:30,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 514 transitions, 7378 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:20:30,934 INFO L231 Difference]: Finished difference. Result has 439 places, 505 transitions, 6519 flow [2024-06-28 03:20:30,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6440, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6519, PETRI_PLACES=439, PETRI_TRANSITIONS=505} [2024-06-28 03:20:30,934 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 407 predicate places. [2024-06-28 03:20:30,934 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 505 transitions, 6519 flow [2024-06-28 03:20:30,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:30,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:30,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:30,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 03:20:30,934 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:30,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:30,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1657407015, now seen corresponding path program 34 times [2024-06-28 03:20:30,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:30,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800450604] [2024-06-28 03:20:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:30,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:31,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:31,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800450604] [2024-06-28 03:20:31,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800450604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:31,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:31,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:31,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203771828] [2024-06-28 03:20:31,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:31,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:31,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:31,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:31,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:31,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:31,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 505 transitions, 6519 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:31,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:31,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:31,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:32,275 INFO L124 PetriNetUnfolderBase]: 1160/1976 cut-off events. [2024-06-28 03:20:32,276 INFO L125 PetriNetUnfolderBase]: For 275149/275149 co-relation queries the response was YES. [2024-06-28 03:20:32,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16729 conditions, 1976 events. 1160/1976 cut-off events. For 275149/275149 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10767 event pairs, 268 based on Foata normal form. 3/1979 useless extension candidates. Maximal degree in co-relation 16559. Up to 1703 conditions per place. [2024-06-28 03:20:32,302 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 460 selfloop transitions, 68 changer transitions 0/530 dead transitions. [2024-06-28 03:20:32,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 530 transitions, 7983 flow [2024-06-28 03:20:32,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:32,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 03:20:32,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-28 03:20:32,303 INFO L175 Difference]: Start difference. First operand has 439 places, 505 transitions, 6519 flow. Second operand 10 states and 128 transitions. [2024-06-28 03:20:32,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 530 transitions, 7983 flow [2024-06-28 03:20:33,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 530 transitions, 7920 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:33,641 INFO L231 Difference]: Finished difference. Result has 441 places, 508 transitions, 6649 flow [2024-06-28 03:20:33,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6456, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6649, PETRI_PLACES=441, PETRI_TRANSITIONS=508} [2024-06-28 03:20:33,641 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 409 predicate places. [2024-06-28 03:20:33,641 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 508 transitions, 6649 flow [2024-06-28 03:20:33,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:33,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:33,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:33,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 03:20:33,642 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:33,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash -483504753, now seen corresponding path program 35 times [2024-06-28 03:20:33,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:33,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608393197] [2024-06-28 03:20:33,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:33,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:34,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:34,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608393197] [2024-06-28 03:20:34,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608393197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:34,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:34,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:34,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932505916] [2024-06-28 03:20:34,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:34,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:34,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:34,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:34,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:34,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:34,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 508 transitions, 6649 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:34,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:34,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:34,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:34,921 INFO L124 PetriNetUnfolderBase]: 1154/1967 cut-off events. [2024-06-28 03:20:34,921 INFO L125 PetriNetUnfolderBase]: For 262179/262179 co-relation queries the response was YES. [2024-06-28 03:20:34,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16501 conditions, 1967 events. 1154/1967 cut-off events. For 262179/262179 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10766 event pairs, 266 based on Foata normal form. 3/1970 useless extension candidates. Maximal degree in co-relation 16330. Up to 1699 conditions per place. [2024-06-28 03:20:34,947 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 456 selfloop transitions, 69 changer transitions 0/527 dead transitions. [2024-06-28 03:20:34,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 527 transitions, 7819 flow [2024-06-28 03:20:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:34,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 03:20:34,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-28 03:20:34,948 INFO L175 Difference]: Start difference. First operand has 441 places, 508 transitions, 6649 flow. Second operand 10 states and 124 transitions. [2024-06-28 03:20:34,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 527 transitions, 7819 flow [2024-06-28 03:20:36,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 527 transitions, 7585 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:20:36,026 INFO L231 Difference]: Finished difference. Result has 441 places, 508 transitions, 6560 flow [2024-06-28 03:20:36,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6415, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6560, PETRI_PLACES=441, PETRI_TRANSITIONS=508} [2024-06-28 03:20:36,026 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 409 predicate places. [2024-06-28 03:20:36,026 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 508 transitions, 6560 flow [2024-06-28 03:20:36,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:36,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:36,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:36,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 03:20:36,026 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:36,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:36,027 INFO L85 PathProgramCache]: Analyzing trace with hash 989037227, now seen corresponding path program 1 times [2024-06-28 03:20:36,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:36,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071155705] [2024-06-28 03:20:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:36,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:36,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:36,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071155705] [2024-06-28 03:20:36,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071155705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:36,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:36,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:36,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626868276] [2024-06-28 03:20:36,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:36,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:36,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:36,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:36,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:20:36,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 508 transitions, 6560 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:36,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:36,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:20:36,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:37,349 INFO L124 PetriNetUnfolderBase]: 1128/1955 cut-off events. [2024-06-28 03:20:37,350 INFO L125 PetriNetUnfolderBase]: For 298917/298922 co-relation queries the response was YES. [2024-06-28 03:20:37,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17101 conditions, 1955 events. 1128/1955 cut-off events. For 298917/298922 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11050 event pairs, 132 based on Foata normal form. 2/1950 useless extension candidates. Maximal degree in co-relation 16929. Up to 1588 conditions per place. [2024-06-28 03:20:37,375 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 403 selfloop transitions, 59 changer transitions 0/535 dead transitions. [2024-06-28 03:20:37,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 535 transitions, 7822 flow [2024-06-28 03:20:37,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:20:37,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:20:37,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 03:20:37,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-28 03:20:37,376 INFO L175 Difference]: Start difference. First operand has 441 places, 508 transitions, 6560 flow. Second operand 12 states and 152 transitions. [2024-06-28 03:20:37,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 535 transitions, 7822 flow [2024-06-28 03:20:38,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 535 transitions, 7655 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 03:20:38,233 INFO L231 Difference]: Finished difference. Result has 444 places, 511 transitions, 6577 flow [2024-06-28 03:20:38,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6393, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6577, PETRI_PLACES=444, PETRI_TRANSITIONS=511} [2024-06-28 03:20:38,233 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 412 predicate places. [2024-06-28 03:20:38,233 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 511 transitions, 6577 flow [2024-06-28 03:20:38,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:38,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:38,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:38,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 03:20:38,234 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:38,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash 989209691, now seen corresponding path program 3 times [2024-06-28 03:20:38,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:38,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932073545] [2024-06-28 03:20:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:38,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:38,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932073545] [2024-06-28 03:20:38,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932073545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:38,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:38,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:20:38,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130932731] [2024-06-28 03:20:38,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:38,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:20:38,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:38,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:20:38,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:20:39,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:39,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 511 transitions, 6577 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:39,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:39,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:39,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:39,931 INFO L124 PetriNetUnfolderBase]: 1224/2084 cut-off events. [2024-06-28 03:20:39,931 INFO L125 PetriNetUnfolderBase]: For 341131/341131 co-relation queries the response was YES. [2024-06-28 03:20:39,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18470 conditions, 2084 events. 1224/2084 cut-off events. For 341131/341131 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11531 event pairs, 137 based on Foata normal form. 3/2087 useless extension candidates. Maximal degree in co-relation 18296. Up to 1230 conditions per place. [2024-06-28 03:20:39,955 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 424 selfloop transitions, 130 changer transitions 0/556 dead transitions. [2024-06-28 03:20:39,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 556 transitions, 9142 flow [2024-06-28 03:20:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:20:39,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:20:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 172 transitions. [2024-06-28 03:20:39,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-28 03:20:39,955 INFO L175 Difference]: Start difference. First operand has 444 places, 511 transitions, 6577 flow. Second operand 12 states and 172 transitions. [2024-06-28 03:20:39,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 556 transitions, 9142 flow [2024-06-28 03:20:41,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 556 transitions, 9000 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 03:20:41,090 INFO L231 Difference]: Finished difference. Result has 448 places, 524 transitions, 6981 flow [2024-06-28 03:20:41,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6435, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6981, PETRI_PLACES=448, PETRI_TRANSITIONS=524} [2024-06-28 03:20:41,090 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 416 predicate places. [2024-06-28 03:20:41,090 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 524 transitions, 6981 flow [2024-06-28 03:20:41,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:41,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:41,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:41,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 03:20:41,090 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:41,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:41,091 INFO L85 PathProgramCache]: Analyzing trace with hash -971875171, now seen corresponding path program 2 times [2024-06-28 03:20:41,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:41,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926604465] [2024-06-28 03:20:41,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:41,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:41,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:41,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926604465] [2024-06-28 03:20:41,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926604465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:41,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:41,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:20:41,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653681927] [2024-06-28 03:20:41,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:41,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:20:41,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:41,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:20:41,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:20:42,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:20:42,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 524 transitions, 6981 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:42,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:42,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:20:42,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:42,918 INFO L124 PetriNetUnfolderBase]: 1200/2083 cut-off events. [2024-06-28 03:20:42,918 INFO L125 PetriNetUnfolderBase]: For 363402/363404 co-relation queries the response was YES. [2024-06-28 03:20:42,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19270 conditions, 2083 events. 1200/2083 cut-off events. For 363402/363404 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11944 event pairs, 189 based on Foata normal form. 2/2081 useless extension candidates. Maximal degree in co-relation 19095. Up to 1794 conditions per place. [2024-06-28 03:20:42,941 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 432 selfloop transitions, 53 changer transitions 0/558 dead transitions. [2024-06-28 03:20:42,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 558 transitions, 8323 flow [2024-06-28 03:20:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:20:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:20:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-06-28 03:20:42,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37662337662337664 [2024-06-28 03:20:42,942 INFO L175 Difference]: Start difference. First operand has 448 places, 524 transitions, 6981 flow. Second operand 14 states and 174 transitions. [2024-06-28 03:20:42,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 558 transitions, 8323 flow [2024-06-28 03:20:44,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 558 transitions, 8196 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 03:20:44,248 INFO L231 Difference]: Finished difference. Result has 459 places, 530 transitions, 7050 flow [2024-06-28 03:20:44,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6854, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7050, PETRI_PLACES=459, PETRI_TRANSITIONS=530} [2024-06-28 03:20:44,248 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 427 predicate places. [2024-06-28 03:20:44,249 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 530 transitions, 7050 flow [2024-06-28 03:20:44,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:44,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:44,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:44,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 03:20:44,249 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:44,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:44,249 INFO L85 PathProgramCache]: Analyzing trace with hash -972218787, now seen corresponding path program 4 times [2024-06-28 03:20:44,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:44,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722865955] [2024-06-28 03:20:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:44,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:44,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:44,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722865955] [2024-06-28 03:20:44,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722865955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:44,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:44,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:20:44,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470632556] [2024-06-28 03:20:44,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:44,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:20:44,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:44,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:20:44,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:20:45,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:45,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 530 transitions, 7050 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:45,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:45,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:45,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:45,961 INFO L124 PetriNetUnfolderBase]: 1256/2146 cut-off events. [2024-06-28 03:20:45,961 INFO L125 PetriNetUnfolderBase]: For 366482/366482 co-relation queries the response was YES. [2024-06-28 03:20:45,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19615 conditions, 2146 events. 1256/2146 cut-off events. For 366482/366482 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12044 event pairs, 149 based on Foata normal form. 3/2149 useless extension candidates. Maximal degree in co-relation 19436. Up to 1282 conditions per place. [2024-06-28 03:20:45,991 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 431 selfloop transitions, 132 changer transitions 0/565 dead transitions. [2024-06-28 03:20:45,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 565 transitions, 9495 flow [2024-06-28 03:20:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:20:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:20:45,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 173 transitions. [2024-06-28 03:20:45,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-28 03:20:45,992 INFO L175 Difference]: Start difference. First operand has 459 places, 530 transitions, 7050 flow. Second operand 12 states and 173 transitions. [2024-06-28 03:20:45,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 565 transitions, 9495 flow [2024-06-28 03:20:47,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 565 transitions, 9412 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 03:20:47,304 INFO L231 Difference]: Finished difference. Result has 462 places, 533 transitions, 7286 flow [2024-06-28 03:20:47,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6967, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7286, PETRI_PLACES=462, PETRI_TRANSITIONS=533} [2024-06-28 03:20:47,305 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 430 predicate places. [2024-06-28 03:20:47,305 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 533 transitions, 7286 flow [2024-06-28 03:20:47,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:47,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:47,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:47,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 03:20:47,305 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:47,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:47,305 INFO L85 PathProgramCache]: Analyzing trace with hash 992121967, now seen corresponding path program 3 times [2024-06-28 03:20:47,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:47,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606464439] [2024-06-28 03:20:47,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:47,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:48,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:48,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606464439] [2024-06-28 03:20:48,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606464439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:48,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:48,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:20:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125696376] [2024-06-28 03:20:48,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:48,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:20:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:20:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:20:48,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:20:48,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 533 transitions, 7286 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:48,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:48,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:20:48,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:49,089 INFO L124 PetriNetUnfolderBase]: 1203/2089 cut-off events. [2024-06-28 03:20:49,089 INFO L125 PetriNetUnfolderBase]: For 356933/356935 co-relation queries the response was YES. [2024-06-28 03:20:49,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19472 conditions, 2089 events. 1203/2089 cut-off events. For 356933/356935 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11992 event pairs, 197 based on Foata normal form. 2/2087 useless extension candidates. Maximal degree in co-relation 19291. Up to 1821 conditions per place. [2024-06-28 03:20:49,117 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 433 selfloop transitions, 52 changer transitions 0/558 dead transitions. [2024-06-28 03:20:49,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 558 transitions, 8327 flow [2024-06-28 03:20:49,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:20:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:20:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 170 transitions. [2024-06-28 03:20:49,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36796536796536794 [2024-06-28 03:20:49,118 INFO L175 Difference]: Start difference. First operand has 462 places, 533 transitions, 7286 flow. Second operand 14 states and 170 transitions. [2024-06-28 03:20:49,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 558 transitions, 8327 flow [2024-06-28 03:20:50,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 558 transitions, 8035 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 03:20:50,598 INFO L231 Difference]: Finished difference. Result has 468 places, 534 transitions, 7116 flow [2024-06-28 03:20:50,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6994, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7116, PETRI_PLACES=468, PETRI_TRANSITIONS=534} [2024-06-28 03:20:50,598 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 436 predicate places. [2024-06-28 03:20:50,598 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 534 transitions, 7116 flow [2024-06-28 03:20:50,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:50,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:50,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:50,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 03:20:50,599 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:50,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:50,599 INFO L85 PathProgramCache]: Analyzing trace with hash 993199749, now seen corresponding path program 4 times [2024-06-28 03:20:50,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:50,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863705206] [2024-06-28 03:20:50,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:50,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:51,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863705206] [2024-06-28 03:20:51,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863705206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:51,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:51,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:51,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225763059] [2024-06-28 03:20:51,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:51,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:51,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:51,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:51,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:51,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:20:51,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 534 transitions, 7116 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:51,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:51,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:20:51,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:52,043 INFO L124 PetriNetUnfolderBase]: 1220/2121 cut-off events. [2024-06-28 03:20:52,043 INFO L125 PetriNetUnfolderBase]: For 381425/381428 co-relation queries the response was YES. [2024-06-28 03:20:52,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19711 conditions, 2121 events. 1220/2121 cut-off events. For 381425/381428 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 12265 event pairs, 184 based on Foata normal form. 2/2118 useless extension candidates. Maximal degree in co-relation 19528. Up to 1761 conditions per place. [2024-06-28 03:20:52,075 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 422 selfloop transitions, 67 changer transitions 0/562 dead transitions. [2024-06-28 03:20:52,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 562 transitions, 8438 flow [2024-06-28 03:20:52,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:20:52,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:20:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-28 03:20:52,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-06-28 03:20:52,076 INFO L175 Difference]: Start difference. First operand has 468 places, 534 transitions, 7116 flow. Second operand 13 states and 166 transitions. [2024-06-28 03:20:52,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 562 transitions, 8438 flow [2024-06-28 03:20:53,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 562 transitions, 8338 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 03:20:53,577 INFO L231 Difference]: Finished difference. Result has 471 places, 537 transitions, 7216 flow [2024-06-28 03:20:53,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7016, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7216, PETRI_PLACES=471, PETRI_TRANSITIONS=537} [2024-06-28 03:20:53,577 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-28 03:20:53,577 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 537 transitions, 7216 flow [2024-06-28 03:20:53,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:53,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:53,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:53,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 03:20:53,578 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:53,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:53,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1355250733, now seen corresponding path program 1 times [2024-06-28 03:20:53,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:53,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13759078] [2024-06-28 03:20:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:53,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:54,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:54,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13759078] [2024-06-28 03:20:54,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13759078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:54,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:54,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598751898] [2024-06-28 03:20:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:54,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:54,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:54,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:54,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:54,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:20:54,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 537 transitions, 7216 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:54,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:54,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:20:54,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:55,025 INFO L124 PetriNetUnfolderBase]: 1277/2184 cut-off events. [2024-06-28 03:20:55,025 INFO L125 PetriNetUnfolderBase]: For 380153/380153 co-relation queries the response was YES. [2024-06-28 03:20:55,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20193 conditions, 2184 events. 1277/2184 cut-off events. For 380153/380153 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12379 event pairs, 209 based on Foata normal form. 1/2185 useless extension candidates. Maximal degree in co-relation 20008. Up to 1981 conditions per place. [2024-06-28 03:20:55,057 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 498 selfloop transitions, 62 changer transitions 0/562 dead transitions. [2024-06-28 03:20:55,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 562 transitions, 8676 flow [2024-06-28 03:20:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:20:55,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:20:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 03:20:55,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-28 03:20:55,058 INFO L175 Difference]: Start difference. First operand has 471 places, 537 transitions, 7216 flow. Second operand 12 states and 145 transitions. [2024-06-28 03:20:55,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 562 transitions, 8676 flow [2024-06-28 03:20:56,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 562 transitions, 8562 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:20:56,576 INFO L231 Difference]: Finished difference. Result has 473 places, 541 transitions, 7292 flow [2024-06-28 03:20:56,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7104, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7292, PETRI_PLACES=473, PETRI_TRANSITIONS=541} [2024-06-28 03:20:56,577 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 441 predicate places. [2024-06-28 03:20:56,577 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 541 transitions, 7292 flow [2024-06-28 03:20:56,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:56,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:56,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:56,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 03:20:56,577 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:56,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:56,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1355246889, now seen corresponding path program 5 times [2024-06-28 03:20:56,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:56,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588638206] [2024-06-28 03:20:56,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:56,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:57,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:57,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588638206] [2024-06-28 03:20:57,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588638206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:57,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:57,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:57,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505514057] [2024-06-28 03:20:57,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:57,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:57,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:57,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:57,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:57,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:20:57,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 541 transitions, 7292 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:57,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:57,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:20:57,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:58,004 INFO L124 PetriNetUnfolderBase]: 1226/2129 cut-off events. [2024-06-28 03:20:58,004 INFO L125 PetriNetUnfolderBase]: For 381166/381169 co-relation queries the response was YES. [2024-06-28 03:20:58,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19851 conditions, 2129 events. 1226/2129 cut-off events. For 381166/381169 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12325 event pairs, 192 based on Foata normal form. 2/2125 useless extension candidates. Maximal degree in co-relation 19665. Up to 1805 conditions per place. [2024-06-28 03:20:58,034 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 424 selfloop transitions, 63 changer transitions 0/562 dead transitions. [2024-06-28 03:20:58,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 562 transitions, 8320 flow [2024-06-28 03:20:58,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:20:58,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:20:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 03:20:58,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:20:58,035 INFO L175 Difference]: Start difference. First operand has 473 places, 541 transitions, 7292 flow. Second operand 12 states and 153 transitions. [2024-06-28 03:20:58,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 562 transitions, 8320 flow [2024-06-28 03:20:59,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 562 transitions, 8212 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:59,435 INFO L231 Difference]: Finished difference. Result has 477 places, 541 transitions, 7316 flow [2024-06-28 03:20:59,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7184, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7316, PETRI_PLACES=477, PETRI_TRANSITIONS=541} [2024-06-28 03:20:59,436 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 445 predicate places. [2024-06-28 03:20:59,436 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 541 transitions, 7316 flow [2024-06-28 03:20:59,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:59,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:59,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:59,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 03:20:59,436 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:20:59,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1565757437, now seen corresponding path program 5 times [2024-06-28 03:20:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:59,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242267161] [2024-06-28 03:20:59,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:59,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:00,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:00,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242267161] [2024-06-28 03:21:00,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242267161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:00,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:00,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:00,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258951960] [2024-06-28 03:21:00,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:00,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:00,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:00,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:00,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:21:00,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 541 transitions, 7316 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:00,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:00,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:21:00,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:00,988 INFO L124 PetriNetUnfolderBase]: 1288/2204 cut-off events. [2024-06-28 03:21:00,988 INFO L125 PetriNetUnfolderBase]: For 393481/393481 co-relation queries the response was YES. [2024-06-28 03:21:01,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20368 conditions, 2204 events. 1288/2204 cut-off events. For 393481/393481 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 12558 event pairs, 213 based on Foata normal form. 3/2207 useless extension candidates. Maximal degree in co-relation 20180. Up to 2060 conditions per place. [2024-06-28 03:21:01,018 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 513 selfloop transitions, 57 changer transitions 0/572 dead transitions. [2024-06-28 03:21:01,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 572 transitions, 8863 flow [2024-06-28 03:21:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:21:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:21:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-28 03:21:01,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3543123543123543 [2024-06-28 03:21:01,019 INFO L175 Difference]: Start difference. First operand has 477 places, 541 transitions, 7316 flow. Second operand 13 states and 152 transitions. [2024-06-28 03:21:01,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 572 transitions, 8863 flow [2024-06-28 03:21:02,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 572 transitions, 8735 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:21:02,780 INFO L231 Difference]: Finished difference. Result has 480 places, 548 transitions, 7436 flow [2024-06-28 03:21:02,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7190, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7436, PETRI_PLACES=480, PETRI_TRANSITIONS=548} [2024-06-28 03:21:02,780 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 448 predicate places. [2024-06-28 03:21:02,780 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 548 transitions, 7436 flow [2024-06-28 03:21:02,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:02,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:02,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:02,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 03:21:02,781 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:02,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1695271995, now seen corresponding path program 6 times [2024-06-28 03:21:02,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:02,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056743726] [2024-06-28 03:21:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:02,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:03,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:03,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056743726] [2024-06-28 03:21:03,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056743726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:03,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:03,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:03,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140060380] [2024-06-28 03:21:03,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:03,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:03,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:03,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:03,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:03,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:21:03,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 548 transitions, 7436 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:03,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:03,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:21:03,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:04,571 INFO L124 PetriNetUnfolderBase]: 1253/2184 cut-off events. [2024-06-28 03:21:04,571 INFO L125 PetriNetUnfolderBase]: For 402900/402901 co-relation queries the response was YES. [2024-06-28 03:21:04,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20592 conditions, 2184 events. 1253/2184 cut-off events. For 402900/402901 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 12773 event pairs, 207 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 20403. Up to 1901 conditions per place. [2024-06-28 03:21:04,602 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 458 selfloop transitions, 43 changer transitions 0/576 dead transitions. [2024-06-28 03:21:04,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 576 transitions, 8788 flow [2024-06-28 03:21:04,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:21:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:21:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-28 03:21:04,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-28 03:21:04,603 INFO L175 Difference]: Start difference. First operand has 480 places, 548 transitions, 7436 flow. Second operand 13 states and 164 transitions. [2024-06-28 03:21:04,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 576 transitions, 8788 flow [2024-06-28 03:21:06,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 576 transitions, 8696 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:21:06,071 INFO L231 Difference]: Finished difference. Result has 485 places, 551 transitions, 7490 flow [2024-06-28 03:21:06,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7344, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7490, PETRI_PLACES=485, PETRI_TRANSITIONS=551} [2024-06-28 03:21:06,071 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 453 predicate places. [2024-06-28 03:21:06,071 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 551 transitions, 7490 flow [2024-06-28 03:21:06,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:06,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:06,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:06,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 03:21:06,072 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:06,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:06,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1841904079, now seen corresponding path program 2 times [2024-06-28 03:21:06,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:06,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077913608] [2024-06-28 03:21:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:06,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:06,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:06,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077913608] [2024-06-28 03:21:06,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077913608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:06,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:06,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:06,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263886805] [2024-06-28 03:21:06,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:06,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:06,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:06,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:06,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:07,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:21:07,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 551 transitions, 7490 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:07,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:07,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:21:07,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:07,957 INFO L124 PetriNetUnfolderBase]: 1307/2241 cut-off events. [2024-06-28 03:21:07,957 INFO L125 PetriNetUnfolderBase]: For 400991/400991 co-relation queries the response was YES. [2024-06-28 03:21:07,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20964 conditions, 2241 events. 1307/2241 cut-off events. For 400991/400991 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 12855 event pairs, 231 based on Foata normal form. 1/2242 useless extension candidates. Maximal degree in co-relation 20772. Up to 2129 conditions per place. [2024-06-28 03:21:07,989 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 528 selfloop transitions, 45 changer transitions 0/575 dead transitions. [2024-06-28 03:21:07,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 575 transitions, 8718 flow [2024-06-28 03:21:07,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:21:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:21:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 157 transitions. [2024-06-28 03:21:07,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3398268398268398 [2024-06-28 03:21:07,990 INFO L175 Difference]: Start difference. First operand has 485 places, 551 transitions, 7490 flow. Second operand 14 states and 157 transitions. [2024-06-28 03:21:07,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 575 transitions, 8718 flow [2024-06-28 03:21:09,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 575 transitions, 8640 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 03:21:09,638 INFO L231 Difference]: Finished difference. Result has 490 places, 553 transitions, 7536 flow [2024-06-28 03:21:09,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7412, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7536, PETRI_PLACES=490, PETRI_TRANSITIONS=553} [2024-06-28 03:21:09,639 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-28 03:21:09,639 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 553 transitions, 7536 flow [2024-06-28 03:21:09,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:09,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:09,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:09,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 03:21:09,639 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:09,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:09,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1676714775, now seen corresponding path program 7 times [2024-06-28 03:21:09,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:09,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628494382] [2024-06-28 03:21:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:09,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:10,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:10,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628494382] [2024-06-28 03:21:10,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628494382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:10,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:10,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:10,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940397698] [2024-06-28 03:21:10,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:10,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:10,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:10,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:10,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:10,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:21:10,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 553 transitions, 7536 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:10,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:10,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:21:10,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:11,518 INFO L124 PetriNetUnfolderBase]: 1253/2184 cut-off events. [2024-06-28 03:21:11,518 INFO L125 PetriNetUnfolderBase]: For 402125/402126 co-relation queries the response was YES. [2024-06-28 03:21:11,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20508 conditions, 2184 events. 1253/2184 cut-off events. For 402125/402126 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 12753 event pairs, 212 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 20314. Up to 1920 conditions per place. [2024-06-28 03:21:11,549 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 457 selfloop transitions, 42 changer transitions 0/575 dead transitions. [2024-06-28 03:21:11,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 575 transitions, 8592 flow [2024-06-28 03:21:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:21:11,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:21:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-28 03:21:11,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.372960372960373 [2024-06-28 03:21:11,550 INFO L175 Difference]: Start difference. First operand has 490 places, 553 transitions, 7536 flow. Second operand 13 states and 160 transitions. [2024-06-28 03:21:11,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 575 transitions, 8592 flow [2024-06-28 03:21:13,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 575 transitions, 8476 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-28 03:21:13,025 INFO L231 Difference]: Finished difference. Result has 491 places, 553 transitions, 7508 flow [2024-06-28 03:21:13,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7420, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7508, PETRI_PLACES=491, PETRI_TRANSITIONS=553} [2024-06-28 03:21:13,026 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 459 predicate places. [2024-06-28 03:21:13,026 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 553 transitions, 7508 flow [2024-06-28 03:21:13,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:13,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:13,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:13,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 03:21:13,026 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:13,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1589869205, now seen corresponding path program 6 times [2024-06-28 03:21:13,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:13,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970023042] [2024-06-28 03:21:13,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:13,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:13,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:13,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970023042] [2024-06-28 03:21:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970023042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:13,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:13,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:13,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458488922] [2024-06-28 03:21:13,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:13,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:13,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:13,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:13,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:13,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:21:13,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 553 transitions, 7508 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:13,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:13,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:21:13,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:14,579 INFO L124 PetriNetUnfolderBase]: 1298/2227 cut-off events. [2024-06-28 03:21:14,579 INFO L125 PetriNetUnfolderBase]: For 391851/391851 co-relation queries the response was YES. [2024-06-28 03:21:14,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20374 conditions, 2227 events. 1298/2227 cut-off events. For 391851/391851 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 12732 event pairs, 230 based on Foata normal form. 3/2230 useless extension candidates. Maximal degree in co-relation 20179. Up to 2121 conditions per place. [2024-06-28 03:21:14,610 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 529 selfloop transitions, 42 changer transitions 0/573 dead transitions. [2024-06-28 03:21:14,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 573 transitions, 8704 flow [2024-06-28 03:21:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:21:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:21:14,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 03:21:14,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-28 03:21:14,611 INFO L175 Difference]: Start difference. First operand has 491 places, 553 transitions, 7508 flow. Second operand 12 states and 140 transitions. [2024-06-28 03:21:14,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 573 transitions, 8704 flow [2024-06-28 03:21:16,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 573 transitions, 8604 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 03:21:16,272 INFO L231 Difference]: Finished difference. Result has 492 places, 553 transitions, 7498 flow [2024-06-28 03:21:16,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7408, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7498, PETRI_PLACES=492, PETRI_TRANSITIONS=553} [2024-06-28 03:21:16,272 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 460 predicate places. [2024-06-28 03:21:16,272 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 553 transitions, 7498 flow [2024-06-28 03:21:16,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:16,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:16,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:16,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 03:21:16,273 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:16,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:16,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1969374529, now seen corresponding path program 3 times [2024-06-28 03:21:16,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:16,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857761889] [2024-06-28 03:21:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:16,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:17,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857761889] [2024-06-28 03:21:17,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857761889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:17,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:17,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:17,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16921254] [2024-06-28 03:21:17,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:17,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:17,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:17,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:21:17,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 553 transitions, 7498 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:17,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:17,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:21:17,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:18,125 INFO L124 PetriNetUnfolderBase]: 1301/2233 cut-off events. [2024-06-28 03:21:18,125 INFO L125 PetriNetUnfolderBase]: For 383017/383017 co-relation queries the response was YES. [2024-06-28 03:21:18,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20446 conditions, 2233 events. 1301/2233 cut-off events. For 383017/383017 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 12782 event pairs, 142 based on Foata normal form. 1/2234 useless extension candidates. Maximal degree in co-relation 20250. Up to 1823 conditions per place. [2024-06-28 03:21:18,157 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 397 selfloop transitions, 174 changer transitions 0/573 dead transitions. [2024-06-28 03:21:18,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 573 transitions, 8716 flow [2024-06-28 03:21:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:21:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:21:18,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 03:21:18,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-28 03:21:18,158 INFO L175 Difference]: Start difference. First operand has 492 places, 553 transitions, 7498 flow. Second operand 12 states and 147 transitions. [2024-06-28 03:21:18,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 573 transitions, 8716 flow [2024-06-28 03:21:19,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 573 transitions, 8595 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:21:19,866 INFO L231 Difference]: Finished difference. Result has 492 places, 555 transitions, 7764 flow [2024-06-28 03:21:19,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7377, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7764, PETRI_PLACES=492, PETRI_TRANSITIONS=555} [2024-06-28 03:21:19,866 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 460 predicate places. [2024-06-28 03:21:19,866 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 555 transitions, 7764 flow [2024-06-28 03:21:19,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:19,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:19,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:19,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 03:21:19,867 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:19,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:19,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1387562995, now seen corresponding path program 7 times [2024-06-28 03:21:19,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:19,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257978724] [2024-06-28 03:21:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:19,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:20,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:20,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257978724] [2024-06-28 03:21:20,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257978724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:20,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:20,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:20,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961112758] [2024-06-28 03:21:20,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:20,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:20,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:20,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:20,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:20,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:21:20,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 555 transitions, 7764 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:20,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:20,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:21:20,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:21,547 INFO L124 PetriNetUnfolderBase]: 1295/2224 cut-off events. [2024-06-28 03:21:21,547 INFO L125 PetriNetUnfolderBase]: For 382031/382031 co-relation queries the response was YES. [2024-06-28 03:21:21,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20348 conditions, 2224 events. 1295/2224 cut-off events. For 382031/382031 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 12769 event pairs, 134 based on Foata normal form. 3/2227 useless extension candidates. Maximal degree in co-relation 20151. Up to 1452 conditions per place. [2024-06-28 03:21:21,577 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 416 selfloop transitions, 160 changer transitions 0/578 dead transitions. [2024-06-28 03:21:21,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 578 transitions, 9250 flow [2024-06-28 03:21:21,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:21:21,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:21:21,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 03:21:21,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39646464646464646 [2024-06-28 03:21:21,578 INFO L175 Difference]: Start difference. First operand has 492 places, 555 transitions, 7764 flow. Second operand 12 states and 157 transitions. [2024-06-28 03:21:21,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 578 transitions, 9250 flow [2024-06-28 03:21:23,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 578 transitions, 8859 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 03:21:23,300 INFO L231 Difference]: Finished difference. Result has 494 places, 555 transitions, 7698 flow [2024-06-28 03:21:23,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7373, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7698, PETRI_PLACES=494, PETRI_TRANSITIONS=555} [2024-06-28 03:21:23,301 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 462 predicate places. [2024-06-28 03:21:23,301 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 555 transitions, 7698 flow [2024-06-28 03:21:23,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:23,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:23,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:23,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 03:21:23,301 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:23,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:23,301 INFO L85 PathProgramCache]: Analyzing trace with hash -573876953, now seen corresponding path program 8 times [2024-06-28 03:21:23,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:23,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016920877] [2024-06-28 03:21:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:23,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:24,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:24,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016920877] [2024-06-28 03:21:24,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016920877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:24,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:24,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:24,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59369956] [2024-06-28 03:21:24,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:24,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:24,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:24,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:24,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:24,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:21:24,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 555 transitions, 7698 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:24,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:24,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:21:24,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:25,116 INFO L124 PetriNetUnfolderBase]: 1249/2178 cut-off events. [2024-06-28 03:21:25,116 INFO L125 PetriNetUnfolderBase]: For 382695/382695 co-relation queries the response was YES. [2024-06-28 03:21:25,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20203 conditions, 2178 events. 1249/2178 cut-off events. For 382695/382695 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 12724 event pairs, 166 based on Foata normal form. 2/2172 useless extension candidates. Maximal degree in co-relation 20005. Up to 1819 conditions per place. [2024-06-28 03:21:25,145 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 412 selfloop transitions, 86 changer transitions 0/575 dead transitions. [2024-06-28 03:21:25,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 575 transitions, 8770 flow [2024-06-28 03:21:25,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:21:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:21:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 03:21:25,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:21:25,146 INFO L175 Difference]: Start difference. First operand has 494 places, 555 transitions, 7698 flow. Second operand 12 states and 153 transitions. [2024-06-28 03:21:25,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 575 transitions, 8770 flow [2024-06-28 03:21:26,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 575 transitions, 8433 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 03:21:26,903 INFO L231 Difference]: Finished difference. Result has 495 places, 556 transitions, 7567 flow [2024-06-28 03:21:26,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7361, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7567, PETRI_PLACES=495, PETRI_TRANSITIONS=556} [2024-06-28 03:21:26,904 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 463 predicate places. [2024-06-28 03:21:26,904 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 556 transitions, 7567 flow [2024-06-28 03:21:26,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:26,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:26,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:26,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 03:21:26,904 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:26,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash 22751651, now seen corresponding path program 4 times [2024-06-28 03:21:26,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:26,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302524208] [2024-06-28 03:21:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:26,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:27,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:27,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302524208] [2024-06-28 03:21:27,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302524208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:27,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:27,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:27,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223257873] [2024-06-28 03:21:27,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:27,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:27,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:27,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:27,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:27,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:21:27,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 556 transitions, 7567 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:27,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:27,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:21:27,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:28,862 INFO L124 PetriNetUnfolderBase]: 1302/2237 cut-off events. [2024-06-28 03:21:28,862 INFO L125 PetriNetUnfolderBase]: For 372525/372525 co-relation queries the response was YES. [2024-06-28 03:21:28,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20229 conditions, 2237 events. 1302/2237 cut-off events. For 372525/372525 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 12872 event pairs, 140 based on Foata normal form. 1/2238 useless extension candidates. Maximal degree in co-relation 20030. Up to 1819 conditions per place. [2024-06-28 03:21:28,894 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 399 selfloop transitions, 176 changer transitions 0/577 dead transitions. [2024-06-28 03:21:28,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 577 transitions, 8799 flow [2024-06-28 03:21:28,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:21:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:21:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-28 03:21:28,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682983682983683 [2024-06-28 03:21:28,905 INFO L175 Difference]: Start difference. First operand has 495 places, 556 transitions, 7567 flow. Second operand 13 states and 158 transitions. [2024-06-28 03:21:28,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 577 transitions, 8799 flow [2024-06-28 03:21:30,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 577 transitions, 8603 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 03:21:30,763 INFO L231 Difference]: Finished difference. Result has 498 places, 558 transitions, 7767 flow [2024-06-28 03:21:30,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7371, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7767, PETRI_PLACES=498, PETRI_TRANSITIONS=558} [2024-06-28 03:21:30,763 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 466 predicate places. [2024-06-28 03:21:30,764 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 558 transitions, 7767 flow [2024-06-28 03:21:30,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:30,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:30,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:30,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 03:21:30,764 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:30,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash 346746053, now seen corresponding path program 9 times [2024-06-28 03:21:30,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:30,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613185368] [2024-06-28 03:21:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:30,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:31,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:31,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613185368] [2024-06-28 03:21:31,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613185368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:31,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:31,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:31,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647693153] [2024-06-28 03:21:31,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:31,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:31,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:31,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:31,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:31,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:21:31,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 558 transitions, 7767 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:31,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:31,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:21:31,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:32,789 INFO L124 PetriNetUnfolderBase]: 1267/2216 cut-off events. [2024-06-28 03:21:32,789 INFO L125 PetriNetUnfolderBase]: For 403977/403978 co-relation queries the response was YES. [2024-06-28 03:21:32,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20598 conditions, 2216 events. 1267/2216 cut-off events. For 403977/403978 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 13106 event pairs, 214 based on Foata normal form. 2/2216 useless extension candidates. Maximal degree in co-relation 20398. Up to 1927 conditions per place. [2024-06-28 03:21:32,822 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 466 selfloop transitions, 41 changer transitions 0/585 dead transitions. [2024-06-28 03:21:32,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 585 transitions, 9149 flow [2024-06-28 03:21:32,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:21:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:21:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-28 03:21:32,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-28 03:21:32,822 INFO L175 Difference]: Start difference. First operand has 498 places, 558 transitions, 7767 flow. Second operand 13 states and 164 transitions. [2024-06-28 03:21:32,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 585 transitions, 9149 flow [2024-06-28 03:21:34,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 585 transitions, 8771 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-28 03:21:34,532 INFO L231 Difference]: Finished difference. Result has 501 places, 561 transitions, 7537 flow [2024-06-28 03:21:34,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7389, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7537, PETRI_PLACES=501, PETRI_TRANSITIONS=561} [2024-06-28 03:21:34,532 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 469 predicate places. [2024-06-28 03:21:34,532 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 561 transitions, 7537 flow [2024-06-28 03:21:34,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:34,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:34,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:34,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 03:21:34,533 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:34,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:34,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1638091341, now seen corresponding path program 5 times [2024-06-28 03:21:34,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:34,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859783237] [2024-06-28 03:21:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:34,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:35,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:35,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859783237] [2024-06-28 03:21:35,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859783237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:35,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:35,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:35,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825056776] [2024-06-28 03:21:35,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:35,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:35,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:35,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:35,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:35,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:21:35,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 561 transitions, 7537 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:35,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:35,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:21:35,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:36,548 INFO L124 PetriNetUnfolderBase]: 1321/2273 cut-off events. [2024-06-28 03:21:36,548 INFO L125 PetriNetUnfolderBase]: For 400018/400018 co-relation queries the response was YES. [2024-06-28 03:21:36,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20687 conditions, 2273 events. 1321/2273 cut-off events. For 400018/400018 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13159 event pairs, 237 based on Foata normal form. 1/2274 useless extension candidates. Maximal degree in co-relation 20485. Up to 2161 conditions per place. [2024-06-28 03:21:36,582 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 539 selfloop transitions, 43 changer transitions 0/584 dead transitions. [2024-06-28 03:21:36,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 584 transitions, 8785 flow [2024-06-28 03:21:36,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:21:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:21:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 157 transitions. [2024-06-28 03:21:36,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3398268398268398 [2024-06-28 03:21:36,582 INFO L175 Difference]: Start difference. First operand has 501 places, 561 transitions, 7537 flow. Second operand 14 states and 157 transitions. [2024-06-28 03:21:36,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 584 transitions, 8785 flow [2024-06-28 03:21:38,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 584 transitions, 8708 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:21:38,665 INFO L231 Difference]: Finished difference. Result has 507 places, 563 transitions, 7584 flow [2024-06-28 03:21:38,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7460, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7584, PETRI_PLACES=507, PETRI_TRANSITIONS=563} [2024-06-28 03:21:38,665 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-28 03:21:38,665 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 563 transitions, 7584 flow [2024-06-28 03:21:38,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:38,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:38,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:38,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 03:21:38,666 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:38,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1638087497, now seen corresponding path program 10 times [2024-06-28 03:21:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:38,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179523780] [2024-06-28 03:21:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:38,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:39,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:39,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179523780] [2024-06-28 03:21:39,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179523780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:39,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:39,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:39,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282466497] [2024-06-28 03:21:39,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:39,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:39,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:39,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:39,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:39,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:21:39,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 563 transitions, 7584 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:39,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:39,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:21:39,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:40,645 INFO L124 PetriNetUnfolderBase]: 1267/2216 cut-off events. [2024-06-28 03:21:40,645 INFO L125 PetriNetUnfolderBase]: For 399620/399621 co-relation queries the response was YES. [2024-06-28 03:21:40,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20192 conditions, 2216 events. 1267/2216 cut-off events. For 399620/399621 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13088 event pairs, 218 based on Foata normal form. 2/2216 useless extension candidates. Maximal degree in co-relation 19988. Up to 1946 conditions per place. [2024-06-28 03:21:40,679 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 465 selfloop transitions, 40 changer transitions 0/584 dead transitions. [2024-06-28 03:21:40,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 584 transitions, 8650 flow [2024-06-28 03:21:40,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:21:40,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:21:40,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-28 03:21:40,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.372960372960373 [2024-06-28 03:21:40,680 INFO L175 Difference]: Start difference. First operand has 507 places, 563 transitions, 7584 flow. Second operand 13 states and 160 transitions. [2024-06-28 03:21:40,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 584 transitions, 8650 flow [2024-06-28 03:21:42,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 584 transitions, 8534 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-28 03:21:42,192 INFO L231 Difference]: Finished difference. Result has 508 places, 563 transitions, 7552 flow [2024-06-28 03:21:42,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7468, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7552, PETRI_PLACES=508, PETRI_TRANSITIONS=563} [2024-06-28 03:21:42,192 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-28 03:21:42,192 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 563 transitions, 7552 flow [2024-06-28 03:21:42,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:42,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:42,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:42,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 03:21:42,193 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:42,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:42,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1724911677, now seen corresponding path program 8 times [2024-06-28 03:21:42,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:42,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849558196] [2024-06-28 03:21:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:42,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:42,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:42,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849558196] [2024-06-28 03:21:42,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849558196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:42,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:42,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:42,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244762794] [2024-06-28 03:21:42,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:42,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:42,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:42,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:42,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:43,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:21:43,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 563 transitions, 7552 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:43,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:43,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:21:43,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:43,821 INFO L124 PetriNetUnfolderBase]: 1312/2259 cut-off events. [2024-06-28 03:21:43,821 INFO L125 PetriNetUnfolderBase]: For 387374/387374 co-relation queries the response was YES. [2024-06-28 03:21:43,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20033 conditions, 2259 events. 1312/2259 cut-off events. For 387374/387374 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13076 event pairs, 236 based on Foata normal form. 3/2262 useless extension candidates. Maximal degree in co-relation 19828. Up to 2153 conditions per place. [2024-06-28 03:21:43,856 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 540 selfloop transitions, 40 changer transitions 0/582 dead transitions. [2024-06-28 03:21:43,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 582 transitions, 8764 flow [2024-06-28 03:21:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:21:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:21:43,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 03:21:43,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-28 03:21:43,857 INFO L175 Difference]: Start difference. First operand has 508 places, 563 transitions, 7552 flow. Second operand 12 states and 140 transitions. [2024-06-28 03:21:43,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 582 transitions, 8764 flow [2024-06-28 03:21:45,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 582 transitions, 8663 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-28 03:21:45,397 INFO L231 Difference]: Finished difference. Result has 508 places, 563 transitions, 7537 flow [2024-06-28 03:21:45,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7451, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7537, PETRI_PLACES=508, PETRI_TRANSITIONS=563} [2024-06-28 03:21:45,398 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-28 03:21:45,398 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 563 transitions, 7537 flow [2024-06-28 03:21:45,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:45,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:45,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:45,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 03:21:45,398 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:45,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:45,398 INFO L85 PathProgramCache]: Analyzing trace with hash 989209505, now seen corresponding path program 6 times [2024-06-28 03:21:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:45,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455642641] [2024-06-28 03:21:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:46,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:46,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455642641] [2024-06-28 03:21:46,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455642641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:46,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:46,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:46,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93142335] [2024-06-28 03:21:46,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:46,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:46,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:46,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:46,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:21:46,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 563 transitions, 7537 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:46,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:46,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:21:46,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:47,360 INFO L124 PetriNetUnfolderBase]: 1315/2264 cut-off events. [2024-06-28 03:21:47,360 INFO L125 PetriNetUnfolderBase]: For 376403/376403 co-relation queries the response was YES. [2024-06-28 03:21:47,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20102 conditions, 2264 events. 1315/2264 cut-off events. For 376403/376403 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13089 event pairs, 131 based on Foata normal form. 1/2265 useless extension candidates. Maximal degree in co-relation 19896. Up to 1855 conditions per place. [2024-06-28 03:21:47,395 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 424 selfloop transitions, 156 changer transitions 0/582 dead transitions. [2024-06-28 03:21:47,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 582 transitions, 8779 flow [2024-06-28 03:21:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:21:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:21:47,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:21:47,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:21:47,396 INFO L175 Difference]: Start difference. First operand has 508 places, 563 transitions, 7537 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:21:47,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 582 transitions, 8779 flow [2024-06-28 03:21:49,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 582 transitions, 8670 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:21:49,122 INFO L231 Difference]: Finished difference. Result has 508 places, 565 transitions, 7787 flow [2024-06-28 03:21:49,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7428, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7787, PETRI_PLACES=508, PETRI_TRANSITIONS=565} [2024-06-28 03:21:49,123 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-28 03:21:49,123 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 565 transitions, 7787 flow [2024-06-28 03:21:49,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:49,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:49,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:49,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 03:21:49,123 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:49,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:49,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1496176865, now seen corresponding path program 9 times [2024-06-28 03:21:49,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:49,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107343067] [2024-06-28 03:21:49,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:49,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:49,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:49,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:49,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107343067] [2024-06-28 03:21:49,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107343067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:49,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:49,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:49,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413149493] [2024-06-28 03:21:49,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:49,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:49,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:49,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:49,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:49,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:21:49,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 565 transitions, 7787 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:49,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:49,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:21:49,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:50,854 INFO L124 PetriNetUnfolderBase]: 1309/2255 cut-off events. [2024-06-28 03:21:50,854 INFO L125 PetriNetUnfolderBase]: For 374417/374417 co-relation queries the response was YES. [2024-06-28 03:21:50,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19950 conditions, 2255 events. 1309/2255 cut-off events. For 374417/374417 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13061 event pairs, 150 based on Foata normal form. 3/2258 useless extension candidates. Maximal degree in co-relation 19743. Up to 1402 conditions per place. [2024-06-28 03:21:50,889 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 450 selfloop transitions, 140 changer transitions 0/592 dead transitions. [2024-06-28 03:21:50,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 592 transitions, 9602 flow [2024-06-28 03:21:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:21:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:21:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-28 03:21:50,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 03:21:50,890 INFO L175 Difference]: Start difference. First operand has 508 places, 565 transitions, 7787 flow. Second operand 12 states and 166 transitions. [2024-06-28 03:21:50,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 592 transitions, 9602 flow [2024-06-28 03:21:52,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 592 transitions, 9239 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-28 03:21:52,551 INFO L231 Difference]: Finished difference. Result has 510 places, 565 transitions, 7711 flow [2024-06-28 03:21:52,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7424, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7711, PETRI_PLACES=510, PETRI_TRANSITIONS=565} [2024-06-28 03:21:52,551 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-28 03:21:52,551 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 565 transitions, 7711 flow [2024-06-28 03:21:52,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:52,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:52,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:52,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 03:21:52,552 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:52,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:52,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1496356541, now seen corresponding path program 7 times [2024-06-28 03:21:52,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:52,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841500005] [2024-06-28 03:21:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:52,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:53,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:53,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841500005] [2024-06-28 03:21:53,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841500005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:53,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:53,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:53,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723425] [2024-06-28 03:21:53,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:53,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:53,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:53,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:53,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:53,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:21:53,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 565 transitions, 7711 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:53,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:53,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:21:53,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:54,584 INFO L124 PetriNetUnfolderBase]: 1312/2260 cut-off events. [2024-06-28 03:21:54,584 INFO L125 PetriNetUnfolderBase]: For 362908/362908 co-relation queries the response was YES. [2024-06-28 03:21:54,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20083 conditions, 2260 events. 1312/2260 cut-off events. For 362908/362908 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13113 event pairs, 133 based on Foata normal form. 1/2261 useless extension candidates. Maximal degree in co-relation 19875. Up to 1851 conditions per place. [2024-06-28 03:21:54,618 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 427 selfloop transitions, 155 changer transitions 0/584 dead transitions. [2024-06-28 03:21:54,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 584 transitions, 8961 flow [2024-06-28 03:21:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:21:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:21:54,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 03:21:54,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-28 03:21:54,618 INFO L175 Difference]: Start difference. First operand has 510 places, 565 transitions, 7711 flow. Second operand 12 states and 151 transitions. [2024-06-28 03:21:54,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 584 transitions, 8961 flow [2024-06-28 03:21:56,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 584 transitions, 8674 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:21:56,389 INFO L231 Difference]: Finished difference. Result has 511 places, 567 transitions, 7785 flow [2024-06-28 03:21:56,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7424, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7785, PETRI_PLACES=511, PETRI_TRANSITIONS=567} [2024-06-28 03:21:56,390 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-28 03:21:56,390 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 567 transitions, 7785 flow [2024-06-28 03:21:56,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:56,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:56,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:56,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 03:21:56,390 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:21:56,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:56,390 INFO L85 PathProgramCache]: Analyzing trace with hash 464894183, now seen corresponding path program 11 times [2024-06-28 03:21:56,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:56,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378513896] [2024-06-28 03:21:56,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:57,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:57,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378513896] [2024-06-28 03:21:57,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378513896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:57,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:57,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:57,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350639379] [2024-06-28 03:21:57,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:57,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:57,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:57,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:57,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:57,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:21:57,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 567 transitions, 7785 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:57,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:57,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:21:57,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:58,434 INFO L124 PetriNetUnfolderBase]: 1267/2219 cut-off events. [2024-06-28 03:21:58,434 INFO L125 PetriNetUnfolderBase]: For 378416/378416 co-relation queries the response was YES. [2024-06-28 03:21:58,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19859 conditions, 2219 events. 1267/2219 cut-off events. For 378416/378416 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13132 event pairs, 119 based on Foata normal form. 2/2221 useless extension candidates. Maximal degree in co-relation 19650. Up to 1848 conditions per place. [2024-06-28 03:21:58,468 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 427 selfloop transitions, 78 changer transitions 0/586 dead transitions. [2024-06-28 03:21:58,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 586 transitions, 8871 flow [2024-06-28 03:21:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:21:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:21:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-28 03:21:58,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-28 03:21:58,469 INFO L175 Difference]: Start difference. First operand has 511 places, 567 transitions, 7785 flow. Second operand 12 states and 155 transitions. [2024-06-28 03:21:58,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 586 transitions, 8871 flow [2024-06-28 03:22:00,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 586 transitions, 8526 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 03:22:00,140 INFO L231 Difference]: Finished difference. Result has 513 places, 568 transitions, 7632 flow [2024-06-28 03:22:00,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7440, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7632, PETRI_PLACES=513, PETRI_TRANSITIONS=568} [2024-06-28 03:22:00,140 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 481 predicate places. [2024-06-28 03:22:00,140 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 568 transitions, 7632 flow [2024-06-28 03:22:00,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:00,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:00,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:00,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 03:22:00,141 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:00,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:00,141 INFO L85 PathProgramCache]: Analyzing trace with hash 464894307, now seen corresponding path program 8 times [2024-06-28 03:22:00,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:00,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017155276] [2024-06-28 03:22:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:00,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:01,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:01,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017155276] [2024-06-28 03:22:01,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017155276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:01,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:01,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:01,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924033095] [2024-06-28 03:22:01,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:01,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:01,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:01,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:01,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:01,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:22:01,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 568 transitions, 7632 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:01,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:01,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:22:01,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:02,105 INFO L124 PetriNetUnfolderBase]: 1319/2273 cut-off events. [2024-06-28 03:22:02,105 INFO L125 PetriNetUnfolderBase]: For 373503/373503 co-relation queries the response was YES. [2024-06-28 03:22:02,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20038 conditions, 2273 events. 1319/2273 cut-off events. For 373503/373503 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13217 event pairs, 128 based on Foata normal form. 1/2274 useless extension candidates. Maximal degree in co-relation 19828. Up to 1855 conditions per place. [2024-06-28 03:22:02,141 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 425 selfloop transitions, 161 changer transitions 0/588 dead transitions. [2024-06-28 03:22:02,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 588 transitions, 8896 flow [2024-06-28 03:22:02,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:22:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:22:02,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-28 03:22:02,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752913752913753 [2024-06-28 03:22:02,141 INFO L175 Difference]: Start difference. First operand has 513 places, 568 transitions, 7632 flow. Second operand 13 states and 161 transitions. [2024-06-28 03:22:02,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 588 transitions, 8896 flow [2024-06-28 03:22:03,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 588 transitions, 8714 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 03:22:04,005 INFO L231 Difference]: Finished difference. Result has 516 places, 570 transitions, 7830 flow [2024-06-28 03:22:04,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7450, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7830, PETRI_PLACES=516, PETRI_TRANSITIONS=570} [2024-06-28 03:22:04,006 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 484 predicate places. [2024-06-28 03:22:04,006 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 570 transitions, 7830 flow [2024-06-28 03:22:04,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:04,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:04,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:04,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 03:22:04,006 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:04,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:04,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1413293159, now seen corresponding path program 12 times [2024-06-28 03:22:04,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:04,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364480838] [2024-06-28 03:22:04,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:04,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:04,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364480838] [2024-06-28 03:22:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364480838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:04,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:04,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:04,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4822014] [2024-06-28 03:22:04,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:04,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:04,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:05,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:22:05,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 570 transitions, 7830 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:05,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:05,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:22:05,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:06,030 INFO L124 PetriNetUnfolderBase]: 1273/2232 cut-off events. [2024-06-28 03:22:06,030 INFO L125 PetriNetUnfolderBase]: For 390150/390150 co-relation queries the response was YES. [2024-06-28 03:22:06,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20033 conditions, 2232 events. 1273/2232 cut-off events. For 390150/390150 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13202 event pairs, 117 based on Foata normal form. 2/2234 useless extension candidates. Maximal degree in co-relation 19822. Up to 1858 conditions per place. [2024-06-28 03:22:06,065 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 425 selfloop transitions, 81 changer transitions 0/588 dead transitions. [2024-06-28 03:22:06,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 588 transitions, 8916 flow [2024-06-28 03:22:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:22:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:22:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 03:22:06,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-28 03:22:06,066 INFO L175 Difference]: Start difference. First operand has 516 places, 570 transitions, 7830 flow. Second operand 12 states and 152 transitions. [2024-06-28 03:22:06,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 588 transitions, 8916 flow [2024-06-28 03:22:07,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 588 transitions, 8556 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-28 03:22:07,740 INFO L231 Difference]: Finished difference. Result has 517 places, 571 transitions, 7670 flow [2024-06-28 03:22:07,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7470, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7670, PETRI_PLACES=517, PETRI_TRANSITIONS=571} [2024-06-28 03:22:07,740 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-28 03:22:07,740 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 571 transitions, 7670 flow [2024-06-28 03:22:07,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:07,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:07,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:07,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 03:22:07,741 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:07,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:07,741 INFO L85 PathProgramCache]: Analyzing trace with hash 556974967, now seen corresponding path program 9 times [2024-06-28 03:22:07,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:07,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364986528] [2024-06-28 03:22:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:07,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:08,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:08,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364986528] [2024-06-28 03:22:08,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364986528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:08,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:08,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:08,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164131832] [2024-06-28 03:22:08,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:08,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:08,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:08,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:08,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:08,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:22:08,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 571 transitions, 7670 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:08,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:08,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:22:08,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:09,666 INFO L124 PetriNetUnfolderBase]: 1326/2287 cut-off events. [2024-06-28 03:22:09,666 INFO L125 PetriNetUnfolderBase]: For 378804/378804 co-relation queries the response was YES. [2024-06-28 03:22:09,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20144 conditions, 2287 events. 1326/2287 cut-off events. For 378804/378804 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 13301 event pairs, 122 based on Foata normal form. 1/2288 useless extension candidates. Maximal degree in co-relation 19932. Up to 1877 conditions per place. [2024-06-28 03:22:09,700 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 429 selfloop transitions, 158 changer transitions 0/589 dead transitions. [2024-06-28 03:22:09,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 589 transitions, 8930 flow [2024-06-28 03:22:09,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:22:09,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:22:09,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 03:22:09,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-28 03:22:09,701 INFO L175 Difference]: Start difference. First operand has 517 places, 571 transitions, 7670 flow. Second operand 12 states and 148 transitions. [2024-06-28 03:22:09,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 589 transitions, 8930 flow [2024-06-28 03:22:11,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 589 transitions, 8740 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 03:22:11,489 INFO L231 Difference]: Finished difference. Result has 519 places, 573 transitions, 7851 flow [2024-06-28 03:22:11,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7480, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7851, PETRI_PLACES=519, PETRI_TRANSITIONS=573} [2024-06-28 03:22:11,489 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 487 predicate places. [2024-06-28 03:22:11,489 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 573 transitions, 7851 flow [2024-06-28 03:22:11,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:11,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:11,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:11,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 03:22:11,490 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:11,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:11,490 INFO L85 PathProgramCache]: Analyzing trace with hash 563468413, now seen corresponding path program 10 times [2024-06-28 03:22:11,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:11,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222208671] [2024-06-28 03:22:11,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:11,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:12,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:12,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222208671] [2024-06-28 03:22:12,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222208671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:12,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:12,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:12,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377126974] [2024-06-28 03:22:12,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:12,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:12,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:12,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:12,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:12,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:22:12,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 573 transitions, 7851 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:12,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:12,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:22:12,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:13,243 INFO L124 PetriNetUnfolderBase]: 1335/2302 cut-off events. [2024-06-28 03:22:13,243 INFO L125 PetriNetUnfolderBase]: For 403094/403094 co-relation queries the response was YES. [2024-06-28 03:22:13,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20412 conditions, 2302 events. 1335/2302 cut-off events. For 403094/403094 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13389 event pairs, 122 based on Foata normal form. 3/2305 useless extension candidates. Maximal degree in co-relation 20199. Up to 1441 conditions per place. [2024-06-28 03:22:13,280 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 436 selfloop transitions, 162 changer transitions 0/600 dead transitions. [2024-06-28 03:22:13,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 600 transitions, 9730 flow [2024-06-28 03:22:13,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:22:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:22:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-28 03:22:13,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-28 03:22:13,281 INFO L175 Difference]: Start difference. First operand has 519 places, 573 transitions, 7851 flow. Second operand 12 states and 159 transitions. [2024-06-28 03:22:13,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 600 transitions, 9730 flow [2024-06-28 03:22:15,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 600 transitions, 9375 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 03:22:15,169 INFO L231 Difference]: Finished difference. Result has 521 places, 576 transitions, 7876 flow [2024-06-28 03:22:15,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7496, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7876, PETRI_PLACES=521, PETRI_TRANSITIONS=576} [2024-06-28 03:22:15,170 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 489 predicate places. [2024-06-28 03:22:15,170 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 576 transitions, 7876 flow [2024-06-28 03:22:15,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:15,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:15,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:15,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 03:22:15,170 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:15,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:15,170 INFO L85 PathProgramCache]: Analyzing trace with hash 563231077, now seen corresponding path program 10 times [2024-06-28 03:22:15,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:15,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511572402] [2024-06-28 03:22:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:15,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:16,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:16,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511572402] [2024-06-28 03:22:16,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511572402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:16,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:16,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:16,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154302253] [2024-06-28 03:22:16,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:16,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:16,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:16,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:16,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:22:16,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 576 transitions, 7876 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:16,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:16,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:22:16,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:17,192 INFO L124 PetriNetUnfolderBase]: 1338/2307 cut-off events. [2024-06-28 03:22:17,192 INFO L125 PetriNetUnfolderBase]: For 390728/390728 co-relation queries the response was YES. [2024-06-28 03:22:17,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20613 conditions, 2307 events. 1338/2307 cut-off events. For 390728/390728 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13442 event pairs, 127 based on Foata normal form. 1/2308 useless extension candidates. Maximal degree in co-relation 20399. Up to 1897 conditions per place. [2024-06-28 03:22:17,228 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 427 selfloop transitions, 165 changer transitions 0/594 dead transitions. [2024-06-28 03:22:17,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 594 transitions, 9150 flow [2024-06-28 03:22:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:22:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:22:17,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:22:17,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-28 03:22:17,229 INFO L175 Difference]: Start difference. First operand has 521 places, 576 transitions, 7876 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:22:17,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 594 transitions, 9150 flow [2024-06-28 03:22:19,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 594 transitions, 8841 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 03:22:19,168 INFO L231 Difference]: Finished difference. Result has 524 places, 578 transitions, 7956 flow [2024-06-28 03:22:19,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7567, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7956, PETRI_PLACES=524, PETRI_TRANSITIONS=578} [2024-06-28 03:22:19,168 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 492 predicate places. [2024-06-28 03:22:19,168 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 578 transitions, 7956 flow [2024-06-28 03:22:19,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:19,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:19,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:19,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 03:22:19,169 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:19,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:19,169 INFO L85 PathProgramCache]: Analyzing trace with hash 563231263, now seen corresponding path program 11 times [2024-06-28 03:22:19,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:19,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099555533] [2024-06-28 03:22:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:19,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:19,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:19,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099555533] [2024-06-28 03:22:19,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099555533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:19,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:19,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:19,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143109428] [2024-06-28 03:22:19,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:19,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:19,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:19,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:19,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:19,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:22:19,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 578 transitions, 7956 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:19,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:19,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:22:19,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:20,913 INFO L124 PetriNetUnfolderBase]: 1362/2346 cut-off events. [2024-06-28 03:22:20,913 INFO L125 PetriNetUnfolderBase]: For 443046/443046 co-relation queries the response was YES. [2024-06-28 03:22:20,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21180 conditions, 2346 events. 1362/2346 cut-off events. For 443046/443046 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 13686 event pairs, 125 based on Foata normal form. 3/2349 useless extension candidates. Maximal degree in co-relation 20965. Up to 1466 conditions per place. [2024-06-28 03:22:20,950 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 451 selfloop transitions, 158 changer transitions 0/611 dead transitions. [2024-06-28 03:22:20,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 611 transitions, 10197 flow [2024-06-28 03:22:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:22:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:22:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-28 03:22:20,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-28 03:22:20,953 INFO L175 Difference]: Start difference. First operand has 524 places, 578 transitions, 7956 flow. Second operand 12 states and 163 transitions. [2024-06-28 03:22:20,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 611 transitions, 10197 flow [2024-06-28 03:22:23,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 611 transitions, 9824 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 03:22:23,125 INFO L231 Difference]: Finished difference. Result has 526 places, 584 transitions, 7993 flow [2024-06-28 03:22:23,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7583, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7993, PETRI_PLACES=526, PETRI_TRANSITIONS=584} [2024-06-28 03:22:23,126 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 494 predicate places. [2024-06-28 03:22:23,126 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 584 transitions, 7993 flow [2024-06-28 03:22:23,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:23,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:23,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:23,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 03:22:23,126 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:23,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash 563237773, now seen corresponding path program 12 times [2024-06-28 03:22:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:23,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321041493] [2024-06-28 03:22:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:23,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:23,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321041493] [2024-06-28 03:22:23,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321041493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:23,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:23,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:23,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962544270] [2024-06-28 03:22:23,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:23,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:23,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:23,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:23,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:23,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:22:23,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 584 transitions, 7993 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:23,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:23,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:22:23,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:24,924 INFO L124 PetriNetUnfolderBase]: 1356/2337 cut-off events. [2024-06-28 03:22:24,924 INFO L125 PetriNetUnfolderBase]: For 421159/421159 co-relation queries the response was YES. [2024-06-28 03:22:24,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20846 conditions, 2337 events. 1356/2337 cut-off events. For 421159/421159 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 13636 event pairs, 124 based on Foata normal form. 3/2340 useless extension candidates. Maximal degree in co-relation 20630. Up to 1462 conditions per place. [2024-06-28 03:22:24,961 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 454 selfloop transitions, 156 changer transitions 0/612 dead transitions. [2024-06-28 03:22:24,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 612 transitions, 9898 flow [2024-06-28 03:22:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:22:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:22:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-28 03:22:24,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-28 03:22:24,962 INFO L175 Difference]: Start difference. First operand has 526 places, 584 transitions, 7993 flow. Second operand 12 states and 163 transitions. [2024-06-28 03:22:24,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 612 transitions, 9898 flow [2024-06-28 03:22:27,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 612 transitions, 9607 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:27,020 INFO L231 Difference]: Finished difference. Result has 530 places, 584 transitions, 8021 flow [2024-06-28 03:22:27,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7702, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8021, PETRI_PLACES=530, PETRI_TRANSITIONS=584} [2024-06-28 03:22:27,020 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 498 predicate places. [2024-06-28 03:22:27,020 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 584 transitions, 8021 flow [2024-06-28 03:22:27,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:27,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:27,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:27,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 03:22:27,021 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:27,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:27,021 INFO L85 PathProgramCache]: Analyzing trace with hash 556797337, now seen corresponding path program 11 times [2024-06-28 03:22:27,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:27,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539626636] [2024-06-28 03:22:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:27,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:27,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:27,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539626636] [2024-06-28 03:22:27,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539626636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:27,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:27,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237357804] [2024-06-28 03:22:27,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:27,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:27,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:27,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:27,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:28,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:22:28,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 584 transitions, 8021 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:28,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:28,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:22:28,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:28,999 INFO L124 PetriNetUnfolderBase]: 1359/2342 cut-off events. [2024-06-28 03:22:29,000 INFO L125 PetriNetUnfolderBase]: For 408352/408352 co-relation queries the response was YES. [2024-06-28 03:22:29,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20929 conditions, 2342 events. 1359/2342 cut-off events. For 408352/408352 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13657 event pairs, 131 based on Foata normal form. 1/2343 useless extension candidates. Maximal degree in co-relation 20712. Up to 1921 conditions per place. [2024-06-28 03:22:29,038 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 436 selfloop transitions, 165 changer transitions 0/603 dead transitions. [2024-06-28 03:22:29,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 603 transitions, 9319 flow [2024-06-28 03:22:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:22:29,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:22:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-28 03:22:29,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36596736596736595 [2024-06-28 03:22:29,039 INFO L175 Difference]: Start difference. First operand has 530 places, 584 transitions, 8021 flow. Second operand 13 states and 157 transitions. [2024-06-28 03:22:29,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 603 transitions, 9319 flow [2024-06-28 03:22:31,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 603 transitions, 8999 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 03:22:31,037 INFO L231 Difference]: Finished difference. Result has 532 places, 586 transitions, 8095 flow [2024-06-28 03:22:31,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7701, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8095, PETRI_PLACES=532, PETRI_TRANSITIONS=586} [2024-06-28 03:22:31,037 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 500 predicate places. [2024-06-28 03:22:31,037 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 586 transitions, 8095 flow [2024-06-28 03:22:31,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:31,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:31,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:31,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 03:22:31,037 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:31,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash 556802173, now seen corresponding path program 13 times [2024-06-28 03:22:31,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:31,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734049450] [2024-06-28 03:22:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:31,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:31,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:31,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734049450] [2024-06-28 03:22:31,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734049450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:31,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:31,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:31,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480779314] [2024-06-28 03:22:31,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:31,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:31,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:31,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:31,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:31,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:22:31,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 586 transitions, 8095 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:31,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:31,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:22:31,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:32,814 INFO L124 PetriNetUnfolderBase]: 1368/2357 cut-off events. [2024-06-28 03:22:32,814 INFO L125 PetriNetUnfolderBase]: For 433383/433383 co-relation queries the response was YES. [2024-06-28 03:22:32,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20969 conditions, 2357 events. 1368/2357 cut-off events. For 433383/433383 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13756 event pairs, 122 based on Foata normal form. 3/2360 useless extension candidates. Maximal degree in co-relation 20751. Up to 1475 conditions per place. [2024-06-28 03:22:32,853 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 456 selfloop transitions, 157 changer transitions 0/615 dead transitions. [2024-06-28 03:22:32,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 615 transitions, 10039 flow [2024-06-28 03:22:32,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:22:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:22:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-28 03:22:32,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-28 03:22:32,853 INFO L175 Difference]: Start difference. First operand has 532 places, 586 transitions, 8095 flow. Second operand 12 states and 163 transitions. [2024-06-28 03:22:32,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 615 transitions, 10039 flow [2024-06-28 03:22:34,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 615 transitions, 9663 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-28 03:22:34,970 INFO L231 Difference]: Finished difference. Result has 533 places, 589 transitions, 8086 flow [2024-06-28 03:22:34,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7719, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8086, PETRI_PLACES=533, PETRI_TRANSITIONS=589} [2024-06-28 03:22:34,971 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 501 predicate places. [2024-06-28 03:22:34,971 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 589 transitions, 8086 flow [2024-06-28 03:22:34,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:34,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:34,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:34,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 03:22:34,971 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:34,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:34,971 INFO L85 PathProgramCache]: Analyzing trace with hash 630717767, now seen corresponding path program 14 times [2024-06-28 03:22:34,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:34,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218880834] [2024-06-28 03:22:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:34,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:35,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:35,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:35,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218880834] [2024-06-28 03:22:35,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218880834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:35,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:35,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:35,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232383603] [2024-06-28 03:22:35,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:35,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:35,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:35,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:35,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:35,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:22:35,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 589 transitions, 8086 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:35,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:35,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:22:35,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:36,747 INFO L124 PetriNetUnfolderBase]: 1377/2372 cut-off events. [2024-06-28 03:22:36,747 INFO L125 PetriNetUnfolderBase]: For 440145/440145 co-relation queries the response was YES. [2024-06-28 03:22:36,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21192 conditions, 2372 events. 1377/2372 cut-off events. For 440145/440145 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 13889 event pairs, 122 based on Foata normal form. 3/2375 useless extension candidates. Maximal degree in co-relation 20973. Up to 1483 conditions per place. [2024-06-28 03:22:36,786 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 462 selfloop transitions, 156 changer transitions 0/620 dead transitions. [2024-06-28 03:22:36,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 620 transitions, 10072 flow [2024-06-28 03:22:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:22:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:22:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-28 03:22:36,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-28 03:22:36,787 INFO L175 Difference]: Start difference. First operand has 533 places, 589 transitions, 8086 flow. Second operand 12 states and 164 transitions. [2024-06-28 03:22:36,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 620 transitions, 10072 flow [2024-06-28 03:22:38,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 620 transitions, 9725 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 03:22:38,862 INFO L231 Difference]: Finished difference. Result has 535 places, 592 transitions, 8111 flow [2024-06-28 03:22:38,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7747, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8111, PETRI_PLACES=535, PETRI_TRANSITIONS=592} [2024-06-28 03:22:38,862 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 503 predicate places. [2024-06-28 03:22:38,862 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 592 transitions, 8111 flow [2024-06-28 03:22:38,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:38,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:38,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:38,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 03:22:38,863 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:38,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash 630711257, now seen corresponding path program 15 times [2024-06-28 03:22:38,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:38,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209207270] [2024-06-28 03:22:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:39,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:39,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209207270] [2024-06-28 03:22:39,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209207270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:39,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:39,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:39,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107021888] [2024-06-28 03:22:39,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:39,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:39,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:39,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:39,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:39,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:22:39,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 592 transitions, 8111 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:39,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:39,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:22:39,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:40,676 INFO L124 PetriNetUnfolderBase]: 1371/2363 cut-off events. [2024-06-28 03:22:40,676 INFO L125 PetriNetUnfolderBase]: For 415471/415471 co-relation queries the response was YES. [2024-06-28 03:22:40,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20732 conditions, 2363 events. 1371/2363 cut-off events. For 415471/415471 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 13822 event pairs, 120 based on Foata normal form. 3/2366 useless extension candidates. Maximal degree in co-relation 20512. Up to 1479 conditions per place. [2024-06-28 03:22:40,713 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 464 selfloop transitions, 155 changer transitions 0/621 dead transitions. [2024-06-28 03:22:40,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 621 transitions, 9781 flow [2024-06-28 03:22:40,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:22:40,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:22:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-28 03:22:40,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 03:22:40,714 INFO L175 Difference]: Start difference. First operand has 535 places, 592 transitions, 8111 flow. Second operand 12 states and 166 transitions. [2024-06-28 03:22:40,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 621 transitions, 9781 flow [2024-06-28 03:22:42,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 621 transitions, 9328 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-28 03:22:42,829 INFO L231 Difference]: Finished difference. Result has 536 places, 592 transitions, 7974 flow [2024-06-28 03:22:42,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7658, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7974, PETRI_PLACES=536, PETRI_TRANSITIONS=592} [2024-06-28 03:22:42,830 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 504 predicate places. [2024-06-28 03:22:42,830 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 592 transitions, 7974 flow [2024-06-28 03:22:42,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:42,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:42,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:42,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 03:22:42,831 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:42,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:42,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1798995895, now seen corresponding path program 13 times [2024-06-28 03:22:42,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:42,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126374939] [2024-06-28 03:22:42,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:42,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:43,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:43,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126374939] [2024-06-28 03:22:43,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126374939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:43,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:43,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:43,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443878586] [2024-06-28 03:22:43,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:43,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:43,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:43,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:43,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:44,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:22:44,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 592 transitions, 7974 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:44,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:44,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:22:44,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:44,853 INFO L124 PetriNetUnfolderBase]: 1335/2342 cut-off events. [2024-06-28 03:22:44,853 INFO L125 PetriNetUnfolderBase]: For 432125/432125 co-relation queries the response was YES. [2024-06-28 03:22:44,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20891 conditions, 2342 events. 1335/2342 cut-off events. For 432125/432125 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 14014 event pairs, 122 based on Foata normal form. 2/2344 useless extension candidates. Maximal degree in co-relation 20670. Up to 2037 conditions per place. [2024-06-28 03:22:44,890 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 493 selfloop transitions, 40 changer transitions 0/618 dead transitions. [2024-06-28 03:22:44,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 618 transitions, 9448 flow [2024-06-28 03:22:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:22:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:22:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-28 03:22:44,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-28 03:22:44,891 INFO L175 Difference]: Start difference. First operand has 536 places, 592 transitions, 7974 flow. Second operand 13 states and 164 transitions. [2024-06-28 03:22:44,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 618 transitions, 9448 flow [2024-06-28 03:22:46,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 618 transitions, 9102 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 03:22:46,944 INFO L231 Difference]: Finished difference. Result has 538 places, 595 transitions, 7780 flow [2024-06-28 03:22:46,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7628, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7780, PETRI_PLACES=538, PETRI_TRANSITIONS=595} [2024-06-28 03:22:46,945 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 506 predicate places. [2024-06-28 03:22:46,945 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 595 transitions, 7780 flow [2024-06-28 03:22:46,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:46,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:46,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:46,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 03:22:46,945 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:46,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1798935321, now seen corresponding path program 12 times [2024-06-28 03:22:46,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:46,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648215554] [2024-06-28 03:22:46,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:46,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:47,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:47,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648215554] [2024-06-28 03:22:47,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648215554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:47,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:47,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:47,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798891474] [2024-06-28 03:22:47,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:47,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:47,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:47,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:48,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:22:48,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 595 transitions, 7780 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:48,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:48,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:22:48,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:49,004 INFO L124 PetriNetUnfolderBase]: 1390/2399 cut-off events. [2024-06-28 03:22:49,004 INFO L125 PetriNetUnfolderBase]: For 424828/424828 co-relation queries the response was YES. [2024-06-28 03:22:49,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20891 conditions, 2399 events. 1390/2399 cut-off events. For 424828/424828 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 14128 event pairs, 126 based on Foata normal form. 1/2400 useless extension candidates. Maximal degree in co-relation 20668. Up to 2287 conditions per place. [2024-06-28 03:22:49,042 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 573 selfloop transitions, 42 changer transitions 0/617 dead transitions. [2024-06-28 03:22:49,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 617 transitions, 9096 flow [2024-06-28 03:22:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:22:49,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:22:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 157 transitions. [2024-06-28 03:22:49,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3398268398268398 [2024-06-28 03:22:49,043 INFO L175 Difference]: Start difference. First operand has 538 places, 595 transitions, 7780 flow. Second operand 14 states and 157 transitions. [2024-06-28 03:22:49,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 617 transitions, 9096 flow [2024-06-28 03:22:51,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 617 transitions, 9012 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:22:51,297 INFO L231 Difference]: Finished difference. Result has 543 places, 597 transitions, 7822 flow [2024-06-28 03:22:51,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7696, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7822, PETRI_PLACES=543, PETRI_TRANSITIONS=597} [2024-06-28 03:22:51,297 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 511 predicate places. [2024-06-28 03:22:51,297 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 597 transitions, 7822 flow [2024-06-28 03:22:51,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:51,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:51,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:51,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 03:22:51,297 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:51,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:51,298 INFO L85 PathProgramCache]: Analyzing trace with hash 534776353, now seen corresponding path program 14 times [2024-06-28 03:22:51,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:51,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695661699] [2024-06-28 03:22:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:51,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:52,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:52,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695661699] [2024-06-28 03:22:52,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695661699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:52,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:52,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:52,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410056210] [2024-06-28 03:22:52,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:52,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:52,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:52,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:52,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:52,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:22:52,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 597 transitions, 7822 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:52,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:52,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:22:52,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:53,370 INFO L124 PetriNetUnfolderBase]: 1335/2342 cut-off events. [2024-06-28 03:22:53,370 INFO L125 PetriNetUnfolderBase]: For 421388/421388 co-relation queries the response was YES. [2024-06-28 03:22:53,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20329 conditions, 2342 events. 1335/2342 cut-off events. For 421388/421388 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 14059 event pairs, 123 based on Foata normal form. 2/2344 useless extension candidates. Maximal degree in co-relation 20104. Up to 2056 conditions per place. [2024-06-28 03:22:53,409 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 492 selfloop transitions, 39 changer transitions 0/617 dead transitions. [2024-06-28 03:22:53,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 617 transitions, 8938 flow [2024-06-28 03:22:53,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:22:53,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:22:53,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-28 03:22:53,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.372960372960373 [2024-06-28 03:22:53,409 INFO L175 Difference]: Start difference. First operand has 543 places, 597 transitions, 7822 flow. Second operand 13 states and 160 transitions. [2024-06-28 03:22:53,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 617 transitions, 8938 flow [2024-06-28 03:22:55,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 617 transitions, 8820 flow, removed 19 selfloop flow, removed 12 redundant places. [2024-06-28 03:22:55,793 INFO L231 Difference]: Finished difference. Result has 544 places, 597 transitions, 7786 flow [2024-06-28 03:22:55,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7704, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7786, PETRI_PLACES=544, PETRI_TRANSITIONS=597} [2024-06-28 03:22:55,793 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 512 predicate places. [2024-06-28 03:22:55,793 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 597 transitions, 7786 flow [2024-06-28 03:22:55,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:55,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:55,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:55,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 03:22:55,794 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:55,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:55,794 INFO L85 PathProgramCache]: Analyzing trace with hash 537577823, now seen corresponding path program 16 times [2024-06-28 03:22:55,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:55,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92303630] [2024-06-28 03:22:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:55,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:56,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:56,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92303630] [2024-06-28 03:22:56,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92303630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:56,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:56,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:56,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769561070] [2024-06-28 03:22:56,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:56,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:56,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:56,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:56,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:22:56,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 597 transitions, 7786 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:56,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:56,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:22:56,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:57,515 INFO L124 PetriNetUnfolderBase]: 1396/2409 cut-off events. [2024-06-28 03:22:57,515 INFO L125 PetriNetUnfolderBase]: For 436132/436132 co-relation queries the response was YES. [2024-06-28 03:22:57,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20711 conditions, 2409 events. 1396/2409 cut-off events. For 436132/436132 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 14209 event pairs, 125 based on Foata normal form. 3/2412 useless extension candidates. Maximal degree in co-relation 20485. Up to 2303 conditions per place. [2024-06-28 03:22:57,554 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 578 selfloop transitions, 39 changer transitions 0/619 dead transitions. [2024-06-28 03:22:57,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 619 transitions, 9138 flow [2024-06-28 03:22:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:22:57,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:22:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 03:22:57,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-28 03:22:57,555 INFO L175 Difference]: Start difference. First operand has 544 places, 597 transitions, 7786 flow. Second operand 12 states and 140 transitions. [2024-06-28 03:22:57,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 619 transitions, 9138 flow [2024-06-28 03:22:59,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 619 transitions, 9062 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 03:22:59,831 INFO L231 Difference]: Finished difference. Result has 545 places, 600 transitions, 7857 flow [2024-06-28 03:22:59,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7710, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7857, PETRI_PLACES=545, PETRI_TRANSITIONS=600} [2024-06-28 03:22:59,831 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 513 predicate places. [2024-06-28 03:22:59,831 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 600 transitions, 7857 flow [2024-06-28 03:22:59,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:59,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:59,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:59,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 03:22:59,832 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:22:59,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:59,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1680847641, now seen corresponding path program 13 times [2024-06-28 03:22:59,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:59,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492198123] [2024-06-28 03:22:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:59,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:00,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:00,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492198123] [2024-06-28 03:23:00,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492198123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:00,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:00,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:00,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831172224] [2024-06-28 03:23:00,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:00,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:00,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:00,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:00,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:00,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:23:00,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 600 transitions, 7857 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:00,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:00,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:23:00,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:01,942 INFO L124 PetriNetUnfolderBase]: 1404/2422 cut-off events. [2024-06-28 03:23:01,942 INFO L125 PetriNetUnfolderBase]: For 431586/431586 co-relation queries the response was YES. [2024-06-28 03:23:01,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21096 conditions, 2422 events. 1404/2422 cut-off events. For 431586/431586 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 14289 event pairs, 154 based on Foata normal form. 1/2423 useless extension candidates. Maximal degree in co-relation 20869. Up to 2004 conditions per place. [2024-06-28 03:23:01,978 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 464 selfloop transitions, 156 changer transitions 0/622 dead transitions. [2024-06-28 03:23:01,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 622 transitions, 9553 flow [2024-06-28 03:23:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:23:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:23:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-28 03:23:01,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776223776223776 [2024-06-28 03:23:01,979 INFO L175 Difference]: Start difference. First operand has 545 places, 600 transitions, 7857 flow. Second operand 13 states and 162 transitions. [2024-06-28 03:23:01,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 622 transitions, 9553 flow [2024-06-28 03:23:04,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 622 transitions, 9445 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:23:04,367 INFO L231 Difference]: Finished difference. Result has 548 places, 604 transitions, 8187 flow [2024-06-28 03:23:04,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7749, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8187, PETRI_PLACES=548, PETRI_TRANSITIONS=604} [2024-06-28 03:23:04,367 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 516 predicate places. [2024-06-28 03:23:04,368 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 604 transitions, 8187 flow [2024-06-28 03:23:04,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:04,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:04,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:04,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 03:23:04,368 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:23:04,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1680847765, now seen corresponding path program 15 times [2024-06-28 03:23:04,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:04,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415694976] [2024-06-28 03:23:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:05,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:05,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415694976] [2024-06-28 03:23:05,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415694976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:05,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:05,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:05,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531508441] [2024-06-28 03:23:05,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:05,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:05,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:05,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:23:05,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 604 transitions, 8187 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:05,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:05,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:23:05,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:06,552 INFO L124 PetriNetUnfolderBase]: 1355/2377 cut-off events. [2024-06-28 03:23:06,553 INFO L125 PetriNetUnfolderBase]: For 451260/451260 co-relation queries the response was YES. [2024-06-28 03:23:06,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21150 conditions, 2377 events. 1355/2377 cut-off events. For 451260/451260 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 14345 event pairs, 135 based on Foata normal form. 2/2379 useless extension candidates. Maximal degree in co-relation 20922. Up to 1991 conditions per place. [2024-06-28 03:23:06,591 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 458 selfloop transitions, 76 changer transitions 0/622 dead transitions. [2024-06-28 03:23:06,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 622 transitions, 9333 flow [2024-06-28 03:23:06,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:23:06,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:23:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-28 03:23:06,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-28 03:23:06,592 INFO L175 Difference]: Start difference. First operand has 548 places, 604 transitions, 8187 flow. Second operand 12 states and 155 transitions. [2024-06-28 03:23:06,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 622 transitions, 9333 flow [2024-06-28 03:23:08,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 622 transitions, 9092 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 03:23:08,945 INFO L231 Difference]: Finished difference. Result has 551 places, 605 transitions, 8138 flow [2024-06-28 03:23:08,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7946, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8138, PETRI_PLACES=551, PETRI_TRANSITIONS=605} [2024-06-28 03:23:08,945 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 519 predicate places. [2024-06-28 03:23:08,945 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 605 transitions, 8138 flow [2024-06-28 03:23:08,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:08,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:08,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:08,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 03:23:08,946 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:23:08,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:08,946 INFO L85 PathProgramCache]: Analyzing trace with hash 652868993, now seen corresponding path program 17 times [2024-06-28 03:23:08,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:08,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478928689] [2024-06-28 03:23:08,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:08,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:09,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:09,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478928689] [2024-06-28 03:23:09,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478928689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:09,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:09,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:09,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532478306] [2024-06-28 03:23:09,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:09,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:09,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:09,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:23:09,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 605 transitions, 8138 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:09,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:09,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:23:09,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:10,886 INFO L124 PetriNetUnfolderBase]: 1447/2493 cut-off events. [2024-06-28 03:23:10,886 INFO L125 PetriNetUnfolderBase]: For 533349/533349 co-relation queries the response was YES. [2024-06-28 03:23:10,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22895 conditions, 2493 events. 1447/2493 cut-off events. For 533349/533349 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 14772 event pairs, 214 based on Foata normal form. 3/2496 useless extension candidates. Maximal degree in co-relation 22665. Up to 1422 conditions per place. [2024-06-28 03:23:10,931 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 467 selfloop transitions, 176 changer transitions 0/645 dead transitions. [2024-06-28 03:23:10,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 645 transitions, 10654 flow [2024-06-28 03:23:10,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:23:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:23:10,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 173 transitions. [2024-06-28 03:23:10,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-28 03:23:10,932 INFO L175 Difference]: Start difference. First operand has 551 places, 605 transitions, 8138 flow. Second operand 12 states and 173 transitions. [2024-06-28 03:23:10,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 645 transitions, 10654 flow [2024-06-28 03:23:13,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 645 transitions, 10472 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 03:23:13,424 INFO L231 Difference]: Finished difference. Result has 554 places, 616 transitions, 8565 flow [2024-06-28 03:23:13,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7956, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8565, PETRI_PLACES=554, PETRI_TRANSITIONS=616} [2024-06-28 03:23:13,424 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 522 predicate places. [2024-06-28 03:23:13,424 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 616 transitions, 8565 flow [2024-06-28 03:23:13,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:13,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:13,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:13,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 03:23:13,425 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:23:13,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:13,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1680669825, now seen corresponding path program 18 times [2024-06-28 03:23:13,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:13,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203065925] [2024-06-28 03:23:13,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:13,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:14,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:14,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203065925] [2024-06-28 03:23:14,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203065925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:14,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:14,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:14,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285607510] [2024-06-28 03:23:14,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:14,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:14,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:14,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:14,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:14,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:23:14,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 616 transitions, 8565 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:14,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:14,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:23:14,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:15,375 INFO L124 PetriNetUnfolderBase]: 1456/2508 cut-off events. [2024-06-28 03:23:15,375 INFO L125 PetriNetUnfolderBase]: For 541557/541557 co-relation queries the response was YES. [2024-06-28 03:23:15,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23511 conditions, 2508 events. 1456/2508 cut-off events. For 541557/541557 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 14879 event pairs, 214 based on Foata normal form. 3/2511 useless extension candidates. Maximal degree in co-relation 23279. Up to 1430 conditions per place. [2024-06-28 03:23:15,417 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 467 selfloop transitions, 180 changer transitions 0/649 dead transitions. [2024-06-28 03:23:15,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 649 transitions, 10976 flow [2024-06-28 03:23:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:23:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:23:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 172 transitions. [2024-06-28 03:23:15,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-28 03:23:15,418 INFO L175 Difference]: Start difference. First operand has 554 places, 616 transitions, 8565 flow. Second operand 12 states and 172 transitions. [2024-06-28 03:23:15,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 649 transitions, 10976 flow [2024-06-28 03:23:18,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 649 transitions, 10795 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:23:18,274 INFO L231 Difference]: Finished difference. Result has 560 places, 619 transitions, 8816 flow [2024-06-28 03:23:18,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8390, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8816, PETRI_PLACES=560, PETRI_TRANSITIONS=619} [2024-06-28 03:23:18,274 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 528 predicate places. [2024-06-28 03:23:18,274 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 619 transitions, 8816 flow [2024-06-28 03:23:18,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:18,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:18,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:18,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 03:23:18,274 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:23:18,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:18,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1680663315, now seen corresponding path program 19 times [2024-06-28 03:23:18,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:18,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833127127] [2024-06-28 03:23:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:18,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:19,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:19,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833127127] [2024-06-28 03:23:19,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833127127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:19,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:19,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:19,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679855019] [2024-06-28 03:23:19,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:19,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:19,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:19,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:19,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:19,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:23:19,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 619 transitions, 8816 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:19,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:19,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:23:19,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:20,129 INFO L124 PetriNetUnfolderBase]: 1450/2499 cut-off events. [2024-06-28 03:23:20,129 INFO L125 PetriNetUnfolderBase]: For 515056/515056 co-relation queries the response was YES. [2024-06-28 03:23:20,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23417 conditions, 2499 events. 1450/2499 cut-off events. For 515056/515056 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 14839 event pairs, 212 based on Foata normal form. 3/2502 useless extension candidates. Maximal degree in co-relation 23183. Up to 1426 conditions per place. [2024-06-28 03:23:20,172 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 462 selfloop transitions, 182 changer transitions 0/646 dead transitions. [2024-06-28 03:23:20,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 646 transitions, 10837 flow [2024-06-28 03:23:20,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:23:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:23:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 168 transitions. [2024-06-28 03:23:20,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 03:23:20,173 INFO L175 Difference]: Start difference. First operand has 560 places, 619 transitions, 8816 flow. Second operand 12 states and 168 transitions. [2024-06-28 03:23:20,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 646 transitions, 10837 flow [2024-06-28 03:23:22,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 646 transitions, 10416 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-28 03:23:22,777 INFO L231 Difference]: Finished difference. Result has 562 places, 619 transitions, 8766 flow [2024-06-28 03:23:22,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8395, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8766, PETRI_PLACES=562, PETRI_TRANSITIONS=619} [2024-06-28 03:23:22,777 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 530 predicate places. [2024-06-28 03:23:22,777 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 619 transitions, 8766 flow [2024-06-28 03:23:22,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:22,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:22,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:22,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 03:23:22,778 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:23:22,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:22,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1680670011, now seen corresponding path program 14 times [2024-06-28 03:23:22,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:22,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723616082] [2024-06-28 03:23:22,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:22,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:23,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:23,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723616082] [2024-06-28 03:23:23,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723616082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:23,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:23,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:23,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435556203] [2024-06-28 03:23:23,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:23,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:23,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:23,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:23,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:23,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:23:23,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 619 transitions, 8766 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:23,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:23,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:23:23,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:24,967 INFO L124 PetriNetUnfolderBase]: 1448/2496 cut-off events. [2024-06-28 03:23:24,967 INFO L125 PetriNetUnfolderBase]: For 486551/486551 co-relation queries the response was YES. [2024-06-28 03:23:25,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23209 conditions, 2496 events. 1448/2496 cut-off events. For 486551/486551 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 14806 event pairs, 156 based on Foata normal form. 1/2497 useless extension candidates. Maximal degree in co-relation 22974. Up to 2087 conditions per place. [2024-06-28 03:23:25,012 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 480 selfloop transitions, 153 changer transitions 0/635 dead transitions. [2024-06-28 03:23:25,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 635 transitions, 10074 flow [2024-06-28 03:23:25,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:23:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:23:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:23:25,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:23:25,013 INFO L175 Difference]: Start difference. First operand has 562 places, 619 transitions, 8766 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:23:25,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 635 transitions, 10074 flow [2024-06-28 03:23:27,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 635 transitions, 9665 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-28 03:23:27,445 INFO L231 Difference]: Finished difference. Result has 563 places, 619 transitions, 8668 flow [2024-06-28 03:23:27,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8357, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8668, PETRI_PLACES=563, PETRI_TRANSITIONS=619} [2024-06-28 03:23:27,445 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 531 predicate places. [2024-06-28 03:23:27,445 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 619 transitions, 8668 flow [2024-06-28 03:23:27,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:27,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:27,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:27,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 03:23:27,445 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:23:27,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:27,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1515208631, now seen corresponding path program 16 times [2024-06-28 03:23:27,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:27,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759305198] [2024-06-28 03:23:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:27,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:28,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:28,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759305198] [2024-06-28 03:23:28,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759305198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:28,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:28,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:28,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31584093] [2024-06-28 03:23:28,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:28,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:28,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:28,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:28,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:28,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:23:28,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 619 transitions, 8668 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:28,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:28,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:23:28,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:29,635 INFO L124 PetriNetUnfolderBase]: 1396/2448 cut-off events. [2024-06-28 03:23:29,635 INFO L125 PetriNetUnfolderBase]: For 505951/505951 co-relation queries the response was YES. [2024-06-28 03:23:29,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22812 conditions, 2448 events. 1396/2448 cut-off events. For 505951/505951 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 14820 event pairs, 137 based on Foata normal form. 2/2450 useless extension candidates. Maximal degree in co-relation 22576. Up to 2063 conditions per place. [2024-06-28 03:23:29,670 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 473 selfloop transitions, 75 changer transitions 0/636 dead transitions. [2024-06-28 03:23:29,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 636 transitions, 9840 flow [2024-06-28 03:23:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:23:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:23:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-28 03:23:29,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-28 03:23:29,671 INFO L175 Difference]: Start difference. First operand has 563 places, 619 transitions, 8668 flow. Second operand 12 states and 155 transitions. [2024-06-28 03:23:29,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 636 transitions, 9840 flow [2024-06-28 03:23:32,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 636 transitions, 9529 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 03:23:32,022 INFO L231 Difference]: Finished difference. Result has 564 places, 620 transitions, 8549 flow [2024-06-28 03:23:32,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8357, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8549, PETRI_PLACES=564, PETRI_TRANSITIONS=620} [2024-06-28 03:23:32,022 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 532 predicate places. [2024-06-28 03:23:32,022 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 620 transitions, 8549 flow [2024-06-28 03:23:32,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:32,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:32,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:32,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 03:23:32,022 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:23:32,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:32,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1508774767, now seen corresponding path program 15 times [2024-06-28 03:23:32,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:32,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402591728] [2024-06-28 03:23:32,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:32,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:33,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402591728] [2024-06-28 03:23:33,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402591728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:33,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:33,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:33,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241725414] [2024-06-28 03:23:33,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:33,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:33,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:33,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:33,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:33,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:23:33,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 620 transitions, 8549 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:33,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:33,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:23:33,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:34,279 INFO L124 PetriNetUnfolderBase]: 1455/2509 cut-off events. [2024-06-28 03:23:34,279 INFO L125 PetriNetUnfolderBase]: For 498145/498145 co-relation queries the response was YES. [2024-06-28 03:23:34,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23064 conditions, 2509 events. 1455/2509 cut-off events. For 498145/498145 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 14909 event pairs, 157 based on Foata normal form. 1/2510 useless extension candidates. Maximal degree in co-relation 22827. Up to 2100 conditions per place. [2024-06-28 03:23:34,321 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 483 selfloop transitions, 152 changer transitions 0/637 dead transitions. [2024-06-28 03:23:34,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 637 transitions, 9919 flow [2024-06-28 03:23:34,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:23:34,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:23:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:23:34,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:23:34,322 INFO L175 Difference]: Start difference. First operand has 564 places, 620 transitions, 8549 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:23:34,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 637 transitions, 9919 flow [2024-06-28 03:23:36,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 637 transitions, 9763 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:23:36,812 INFO L231 Difference]: Finished difference. Result has 567 places, 622 transitions, 8768 flow [2024-06-28 03:23:36,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8393, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8768, PETRI_PLACES=567, PETRI_TRANSITIONS=622} [2024-06-28 03:23:36,812 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 535 predicate places. [2024-06-28 03:23:36,812 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 622 transitions, 8768 flow [2024-06-28 03:23:36,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:36,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:36,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:36,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 03:23:36,812 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:23:36,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:36,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1508768071, now seen corresponding path program 20 times [2024-06-28 03:23:36,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:36,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456574596] [2024-06-28 03:23:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:36,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:37,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:37,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456574596] [2024-06-28 03:23:37,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456574596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:37,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:37,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:37,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448093974] [2024-06-28 03:23:37,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:37,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:37,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:37,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:37,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:37,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:23:37,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 622 transitions, 8768 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:37,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:37,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:23:37,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:38,882 INFO L124 PetriNetUnfolderBase]: 1509/2596 cut-off events. [2024-06-28 03:23:38,882 INFO L125 PetriNetUnfolderBase]: For 638581/638581 co-relation queries the response was YES. [2024-06-28 03:23:38,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25312 conditions, 2596 events. 1509/2596 cut-off events. For 638581/638581 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 15496 event pairs, 224 based on Foata normal form. 3/2599 useless extension candidates. Maximal degree in co-relation 25074. Up to 1480 conditions per place. [2024-06-28 03:23:38,927 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 482 selfloop transitions, 185 changer transitions 0/669 dead transitions. [2024-06-28 03:23:38,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 669 transitions, 12112 flow [2024-06-28 03:23:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:23:38,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:23:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 175 transitions. [2024-06-28 03:23:38,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-28 03:23:38,927 INFO L175 Difference]: Start difference. First operand has 567 places, 622 transitions, 8768 flow. Second operand 12 states and 175 transitions. [2024-06-28 03:23:38,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 669 transitions, 12112 flow [2024-06-28 03:23:42,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 669 transitions, 11753 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-28 03:23:42,148 INFO L231 Difference]: Finished difference. Result has 569 places, 634 transitions, 9034 flow [2024-06-28 03:23:42,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8409, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9034, PETRI_PLACES=569, PETRI_TRANSITIONS=634} [2024-06-28 03:23:42,148 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 537 predicate places. [2024-06-28 03:23:42,148 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 634 transitions, 9034 flow [2024-06-28 03:23:42,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:42,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:42,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:42,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 03:23:42,149 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:23:42,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:42,149 INFO L85 PathProgramCache]: Analyzing trace with hash 818680921, now seen corresponding path program 16 times [2024-06-28 03:23:42,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:42,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61993424] [2024-06-28 03:23:42,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:42,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:43,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:43,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61993424] [2024-06-28 03:23:43,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61993424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:43,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:43,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:43,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214104814] [2024-06-28 03:23:43,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:43,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:43,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:43,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:43,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:23:43,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 634 transitions, 9034 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:43,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:43,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:23:43,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:44,389 INFO L124 PetriNetUnfolderBase]: 1512/2601 cut-off events. [2024-06-28 03:23:44,389 INFO L125 PetriNetUnfolderBase]: For 622996/622996 co-relation queries the response was YES. [2024-06-28 03:23:44,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25596 conditions, 2601 events. 1512/2601 cut-off events. For 622996/622996 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 15534 event pairs, 166 based on Foata normal form. 1/2602 useless extension candidates. Maximal degree in co-relation 25357. Up to 2192 conditions per place. [2024-06-28 03:23:44,432 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 500 selfloop transitions, 149 changer transitions 0/651 dead transitions. [2024-06-28 03:23:44,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 651 transitions, 10436 flow [2024-06-28 03:23:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:23:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:23:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 03:23:44,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-28 03:23:44,433 INFO L175 Difference]: Start difference. First operand has 569 places, 634 transitions, 9034 flow. Second operand 12 states and 152 transitions. [2024-06-28 03:23:44,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 651 transitions, 10436 flow [2024-06-28 03:23:47,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 651 transitions, 10097 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:23:47,523 INFO L231 Difference]: Finished difference. Result has 575 places, 636 transitions, 9068 flow [2024-06-28 03:23:47,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8695, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9068, PETRI_PLACES=575, PETRI_TRANSITIONS=636} [2024-06-28 03:23:47,524 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 543 predicate places. [2024-06-28 03:23:47,524 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 636 transitions, 9068 flow [2024-06-28 03:23:47,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:47,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:47,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:47,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 03:23:47,524 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:23:47,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:47,524 INFO L85 PathProgramCache]: Analyzing trace with hash 818508127, now seen corresponding path program 21 times [2024-06-28 03:23:47,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:47,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498581560] [2024-06-28 03:23:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:47,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:48,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:48,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:48,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498581560] [2024-06-28 03:23:48,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498581560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:48,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:48,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:48,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897881966] [2024-06-28 03:23:48,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:48,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:48,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:48,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:48,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:48,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:23:48,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 636 transitions, 9068 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:48,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:48,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:23:48,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:49,490 INFO L124 PetriNetUnfolderBase]: 1521/2616 cut-off events. [2024-06-28 03:23:49,491 INFO L125 PetriNetUnfolderBase]: For 655221/655221 co-relation queries the response was YES. [2024-06-28 03:23:49,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25540 conditions, 2616 events. 1521/2616 cut-off events. For 655221/655221 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 15643 event pairs, 222 based on Foata normal form. 3/2619 useless extension candidates. Maximal degree in co-relation 25300. Up to 1493 conditions per place. [2024-06-28 03:23:49,535 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 478 selfloop transitions, 190 changer transitions 0/670 dead transitions. [2024-06-28 03:23:49,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 670 transitions, 11584 flow [2024-06-28 03:23:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:23:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:23:49,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 173 transitions. [2024-06-28 03:23:49,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-28 03:23:49,536 INFO L175 Difference]: Start difference. First operand has 575 places, 636 transitions, 9068 flow. Second operand 12 states and 173 transitions. [2024-06-28 03:23:49,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 670 transitions, 11584 flow [2024-06-28 03:23:52,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 670 transitions, 11227 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-28 03:23:52,698 INFO L231 Difference]: Finished difference. Result has 577 places, 639 transitions, 9158 flow [2024-06-28 03:23:52,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8711, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9158, PETRI_PLACES=577, PETRI_TRANSITIONS=639} [2024-06-28 03:23:52,698 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 545 predicate places. [2024-06-28 03:23:52,698 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 639 transitions, 9158 flow [2024-06-28 03:23:52,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:52,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:52,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:52,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 03:23:52,698 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:23:52,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1508774581, now seen corresponding path program 22 times [2024-06-28 03:23:52,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:52,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842901228] [2024-06-28 03:23:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:52,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:53,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:53,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:53,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842901228] [2024-06-28 03:23:53,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842901228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:53,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:53,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:53,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336389253] [2024-06-28 03:23:53,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:53,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:53,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:53,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:53,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:53,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:23:53,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 639 transitions, 9158 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:53,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:53,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:23:53,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:54,718 INFO L124 PetriNetUnfolderBase]: 1515/2607 cut-off events. [2024-06-28 03:23:54,718 INFO L125 PetriNetUnfolderBase]: For 626817/626817 co-relation queries the response was YES. [2024-06-28 03:23:54,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25233 conditions, 2607 events. 1515/2607 cut-off events. For 626817/626817 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 15559 event pairs, 220 based on Foata normal form. 3/2610 useless extension candidates. Maximal degree in co-relation 24992. Up to 1489 conditions per place. [2024-06-28 03:23:54,762 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 479 selfloop transitions, 190 changer transitions 0/671 dead transitions. [2024-06-28 03:23:54,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 671 transitions, 11939 flow [2024-06-28 03:23:54,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:23:54,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:23:54,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 173 transitions. [2024-06-28 03:23:54,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-28 03:23:54,763 INFO L175 Difference]: Start difference. First operand has 577 places, 639 transitions, 9158 flow. Second operand 12 states and 173 transitions. [2024-06-28 03:23:54,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 671 transitions, 11939 flow [2024-06-28 03:23:57,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 671 transitions, 11528 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 03:23:57,971 INFO L231 Difference]: Finished difference. Result has 580 places, 639 transitions, 9133 flow [2024-06-28 03:23:57,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8747, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9133, PETRI_PLACES=580, PETRI_TRANSITIONS=639} [2024-06-28 03:23:57,971 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 548 predicate places. [2024-06-28 03:23:57,971 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 639 transitions, 9133 flow [2024-06-28 03:23:57,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:57,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:57,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:57,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 03:23:57,972 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:23:57,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:57,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1515203857, now seen corresponding path program 17 times [2024-06-28 03:23:57,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:57,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237450994] [2024-06-28 03:23:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:57,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:58,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:58,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237450994] [2024-06-28 03:23:58,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237450994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:58,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:58,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:58,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471189496] [2024-06-28 03:23:58,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:58,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:58,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:58,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:58,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:59,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:23:59,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 639 transitions, 9133 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:59,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:59,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:23:59,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:00,161 INFO L124 PetriNetUnfolderBase]: 1518/2612 cut-off events. [2024-06-28 03:24:00,161 INFO L125 PetriNetUnfolderBase]: For 608918/608918 co-relation queries the response was YES. [2024-06-28 03:24:00,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25308 conditions, 2612 events. 1518/2612 cut-off events. For 608918/608918 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 15608 event pairs, 162 based on Foata normal form. 1/2613 useless extension candidates. Maximal degree in co-relation 25066. Up to 2203 conditions per place. [2024-06-28 03:24:00,205 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 504 selfloop transitions, 150 changer transitions 0/656 dead transitions. [2024-06-28 03:24:00,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 656 transitions, 10549 flow [2024-06-28 03:24:00,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:24:00,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:24:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 03:24:00,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-28 03:24:00,206 INFO L175 Difference]: Start difference. First operand has 580 places, 639 transitions, 9133 flow. Second operand 12 states and 151 transitions. [2024-06-28 03:24:00,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 656 transitions, 10549 flow [2024-06-28 03:24:03,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 656 transitions, 10178 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 03:24:03,159 INFO L231 Difference]: Finished difference. Result has 582 places, 641 transitions, 9141 flow [2024-06-28 03:24:03,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8762, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9141, PETRI_PLACES=582, PETRI_TRANSITIONS=641} [2024-06-28 03:24:03,159 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 550 predicate places. [2024-06-28 03:24:03,159 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 641 transitions, 9141 flow [2024-06-28 03:24:03,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:03,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:03,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:03,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 03:24:03,160 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:24:03,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:03,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1330812193, now seen corresponding path program 18 times [2024-06-28 03:24:03,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:03,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832557116] [2024-06-28 03:24:03,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:03,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:04,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:04,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832557116] [2024-06-28 03:24:04,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832557116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:04,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:04,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:04,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033561608] [2024-06-28 03:24:04,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:04,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:04,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:04,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:04,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:04,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:24:04,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 641 transitions, 9141 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:04,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:04,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:24:04,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:05,345 INFO L124 PetriNetUnfolderBase]: 1521/2617 cut-off events. [2024-06-28 03:24:05,345 INFO L125 PetriNetUnfolderBase]: For 615460/615460 co-relation queries the response was YES. [2024-06-28 03:24:05,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25254 conditions, 2617 events. 1521/2617 cut-off events. For 615460/615460 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 15607 event pairs, 165 based on Foata normal form. 1/2618 useless extension candidates. Maximal degree in co-relation 25011. Up to 2196 conditions per place. [2024-06-28 03:24:05,391 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 499 selfloop transitions, 158 changer transitions 0/659 dead transitions. [2024-06-28 03:24:05,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 659 transitions, 10569 flow [2024-06-28 03:24:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:24:05,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:24:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-28 03:24:05,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752913752913753 [2024-06-28 03:24:05,392 INFO L175 Difference]: Start difference. First operand has 582 places, 641 transitions, 9141 flow. Second operand 13 states and 161 transitions. [2024-06-28 03:24:05,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 659 transitions, 10569 flow [2024-06-28 03:24:08,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 659 transitions, 10206 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-28 03:24:08,650 INFO L231 Difference]: Finished difference. Result has 585 places, 643 transitions, 9180 flow [2024-06-28 03:24:08,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8778, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9180, PETRI_PLACES=585, PETRI_TRANSITIONS=643} [2024-06-28 03:24:08,650 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 553 predicate places. [2024-06-28 03:24:08,650 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 643 transitions, 9180 flow [2024-06-28 03:24:08,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:08,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:08,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:08,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 03:24:08,651 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:24:08,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:08,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1515024181, now seen corresponding path program 23 times [2024-06-28 03:24:08,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:08,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083145828] [2024-06-28 03:24:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:08,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:09,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:09,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083145828] [2024-06-28 03:24:09,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083145828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:09,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:09,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:09,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410117962] [2024-06-28 03:24:09,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:09,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:09,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:09,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:09,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:09,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:24:09,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 643 transitions, 9180 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:09,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:09,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:24:09,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:10,562 INFO L124 PetriNetUnfolderBase]: 1530/2632 cut-off events. [2024-06-28 03:24:10,562 INFO L125 PetriNetUnfolderBase]: For 649855/649855 co-relation queries the response was YES. [2024-06-28 03:24:10,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25404 conditions, 2632 events. 1530/2632 cut-off events. For 649855/649855 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 15763 event pairs, 222 based on Foata normal form. 3/2635 useless extension candidates. Maximal degree in co-relation 25160. Up to 1507 conditions per place. [2024-06-28 03:24:10,609 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 489 selfloop transitions, 189 changer transitions 0/680 dead transitions. [2024-06-28 03:24:10,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 680 transitions, 12096 flow [2024-06-28 03:24:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:24:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:24:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 175 transitions. [2024-06-28 03:24:10,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-28 03:24:10,610 INFO L175 Difference]: Start difference. First operand has 585 places, 643 transitions, 9180 flow. Second operand 12 states and 175 transitions. [2024-06-28 03:24:10,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 680 transitions, 12096 flow [2024-06-28 03:24:13,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 680 transitions, 11706 flow, removed 40 selfloop flow, removed 11 redundant places. [2024-06-28 03:24:13,739 INFO L231 Difference]: Finished difference. Result has 586 places, 646 transitions, 9245 flow [2024-06-28 03:24:13,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8798, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9245, PETRI_PLACES=586, PETRI_TRANSITIONS=646} [2024-06-28 03:24:13,739 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 554 predicate places. [2024-06-28 03:24:13,739 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 646 transitions, 9245 flow [2024-06-28 03:24:13,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:13,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:13,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:13,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 03:24:13,739 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:24:13,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:13,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1515030691, now seen corresponding path program 24 times [2024-06-28 03:24:13,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:13,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681717411] [2024-06-28 03:24:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:13,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:14,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:14,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681717411] [2024-06-28 03:24:14,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681717411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:14,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:14,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:14,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730349758] [2024-06-28 03:24:14,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:14,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:14,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:14,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:14,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:14,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:24:14,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 646 transitions, 9245 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:14,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:14,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:24:14,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:15,711 INFO L124 PetriNetUnfolderBase]: 1524/2623 cut-off events. [2024-06-28 03:24:15,712 INFO L125 PetriNetUnfolderBase]: For 611002/611002 co-relation queries the response was YES. [2024-06-28 03:24:15,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24982 conditions, 2623 events. 1524/2623 cut-off events. For 611002/611002 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 15712 event pairs, 221 based on Foata normal form. 3/2626 useless extension candidates. Maximal degree in co-relation 24737. Up to 1503 conditions per place. [2024-06-28 03:24:15,757 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 491 selfloop transitions, 188 changer transitions 0/681 dead transitions. [2024-06-28 03:24:15,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 681 transitions, 11797 flow [2024-06-28 03:24:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:24:15,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:24:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-06-28 03:24:15,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-28 03:24:15,758 INFO L175 Difference]: Start difference. First operand has 586 places, 646 transitions, 9245 flow. Second operand 12 states and 177 transitions. [2024-06-28 03:24:15,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 681 transitions, 11797 flow [2024-06-28 03:24:18,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 681 transitions, 11342 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 03:24:18,837 INFO L231 Difference]: Finished difference. Result has 588 places, 646 transitions, 9172 flow [2024-06-28 03:24:18,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8790, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9172, PETRI_PLACES=588, PETRI_TRANSITIONS=646} [2024-06-28 03:24:18,837 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 556 predicate places. [2024-06-28 03:24:18,837 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 646 transitions, 9172 flow [2024-06-28 03:24:18,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:18,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:18,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:18,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 03:24:18,837 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:24:18,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:18,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1508537431, now seen corresponding path program 25 times [2024-06-28 03:24:18,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:18,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097894597] [2024-06-28 03:24:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:18,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:19,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:19,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097894597] [2024-06-28 03:24:19,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097894597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:19,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:19,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:19,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76278163] [2024-06-28 03:24:19,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:19,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:19,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:19,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:19,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:24:19,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 646 transitions, 9172 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:19,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:19,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:24:19,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:20,829 INFO L124 PetriNetUnfolderBase]: 1518/2614 cut-off events. [2024-06-28 03:24:20,830 INFO L125 PetriNetUnfolderBase]: For 578239/578239 co-relation queries the response was YES. [2024-06-28 03:24:20,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24405 conditions, 2614 events. 1518/2614 cut-off events. For 578239/578239 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 15685 event pairs, 224 based on Foata normal form. 3/2617 useless extension candidates. Maximal degree in co-relation 24159. Up to 1499 conditions per place. [2024-06-28 03:24:20,876 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 474 selfloop transitions, 198 changer transitions 0/674 dead transitions. [2024-06-28 03:24:20,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 674 transitions, 11319 flow [2024-06-28 03:24:20,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:24:20,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:24:20,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 168 transitions. [2024-06-28 03:24:20,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 03:24:20,877 INFO L175 Difference]: Start difference. First operand has 588 places, 646 transitions, 9172 flow. Second operand 12 states and 168 transitions. [2024-06-28 03:24:20,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 674 transitions, 11319 flow [2024-06-28 03:24:23,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 674 transitions, 10883 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-28 03:24:23,671 INFO L231 Difference]: Finished difference. Result has 588 places, 646 transitions, 9139 flow [2024-06-28 03:24:23,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8736, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9139, PETRI_PLACES=588, PETRI_TRANSITIONS=646} [2024-06-28 03:24:23,671 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 556 predicate places. [2024-06-28 03:24:23,672 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 646 transitions, 9139 flow [2024-06-28 03:24:23,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:23,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:23,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:23,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 03:24:23,672 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:24:23,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash -465252509, now seen corresponding path program 19 times [2024-06-28 03:24:23,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:23,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380452119] [2024-06-28 03:24:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:23,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:24,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380452119] [2024-06-28 03:24:24,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380452119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:24,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:24,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:24,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543783378] [2024-06-28 03:24:24,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:24,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:24,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:24,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:24,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:24:24,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 646 transitions, 9139 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:24,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:24,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:24:24,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:25,839 INFO L124 PetriNetUnfolderBase]: 1521/2620 cut-off events. [2024-06-28 03:24:25,839 INFO L125 PetriNetUnfolderBase]: For 558370/558370 co-relation queries the response was YES. [2024-06-28 03:24:25,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24495 conditions, 2620 events. 1521/2620 cut-off events. For 558370/558370 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 15720 event pairs, 144 based on Foata normal form. 1/2621 useless extension candidates. Maximal degree in co-relation 24248. Up to 2210 conditions per place. [2024-06-28 03:24:25,885 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 504 selfloop transitions, 156 changer transitions 0/662 dead transitions. [2024-06-28 03:24:25,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 662 transitions, 10567 flow [2024-06-28 03:24:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:24:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:24:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 03:24:25,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-28 03:24:25,887 INFO L175 Difference]: Start difference. First operand has 588 places, 646 transitions, 9139 flow. Second operand 12 states and 147 transitions. [2024-06-28 03:24:25,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 662 transitions, 10567 flow [2024-06-28 03:24:28,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 662 transitions, 10149 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:24:28,874 INFO L231 Difference]: Finished difference. Result has 588 places, 648 transitions, 9116 flow [2024-06-28 03:24:28,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8721, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9116, PETRI_PLACES=588, PETRI_TRANSITIONS=648} [2024-06-28 03:24:28,874 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 556 predicate places. [2024-06-28 03:24:28,874 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 648 transitions, 9116 flow [2024-06-28 03:24:28,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:28,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:28,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:28,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 03:24:28,874 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:24:28,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:28,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1010333173, now seen corresponding path program 1 times [2024-06-28 03:24:28,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:28,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963445953] [2024-06-28 03:24:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:28,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:30,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:30,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963445953] [2024-06-28 03:24:30,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963445953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:30,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:30,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:30,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408989972] [2024-06-28 03:24:30,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:30,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:30,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:30,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:30,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:30,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:24:30,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 648 transitions, 9116 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:30,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:30,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:24:30,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:31,115 INFO L124 PetriNetUnfolderBase]: 1423/2497 cut-off events. [2024-06-28 03:24:31,115 INFO L125 PetriNetUnfolderBase]: For 587273/587298 co-relation queries the response was YES. [2024-06-28 03:24:31,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23767 conditions, 2497 events. 1423/2497 cut-off events. For 587273/587298 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 15302 event pairs, 257 based on Foata normal form. 3/2473 useless extension candidates. Maximal degree in co-relation 23519. Up to 2277 conditions per place. [2024-06-28 03:24:31,159 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 572 selfloop transitions, 39 changer transitions 0/665 dead transitions. [2024-06-28 03:24:31,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 665 transitions, 10392 flow [2024-06-28 03:24:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:24:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:24:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 03:24:31,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-28 03:24:31,160 INFO L175 Difference]: Start difference. First operand has 588 places, 648 transitions, 9116 flow. Second operand 11 states and 139 transitions. [2024-06-28 03:24:31,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 665 transitions, 10392 flow [2024-06-28 03:24:34,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 665 transitions, 10013 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-28 03:24:34,269 INFO L231 Difference]: Finished difference. Result has 589 places, 649 transitions, 8833 flow [2024-06-28 03:24:34,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8737, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8833, PETRI_PLACES=589, PETRI_TRANSITIONS=649} [2024-06-28 03:24:34,269 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 557 predicate places. [2024-06-28 03:24:34,269 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 649 transitions, 8833 flow [2024-06-28 03:24:34,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:34,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:34,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:34,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 03:24:34,269 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:24:34,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:34,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1246822873, now seen corresponding path program 26 times [2024-06-28 03:24:34,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:34,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799340933] [2024-06-28 03:24:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:34,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:35,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:35,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799340933] [2024-06-28 03:24:35,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799340933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:35,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:35,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:35,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466102946] [2024-06-28 03:24:35,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:35,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:35,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:35,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:35,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:35,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:24:35,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 649 transitions, 8833 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:35,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:35,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:24:35,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:36,206 INFO L124 PetriNetUnfolderBase]: 1564/2691 cut-off events. [2024-06-28 03:24:36,206 INFO L125 PetriNetUnfolderBase]: For 680393/680393 co-relation queries the response was YES. [2024-06-28 03:24:36,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25613 conditions, 2691 events. 1564/2691 cut-off events. For 680393/680393 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 16163 event pairs, 135 based on Foata normal form. 3/2694 useless extension candidates. Maximal degree in co-relation 25364. Up to 1544 conditions per place. [2024-06-28 03:24:36,254 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 480 selfloop transitions, 208 changer transitions 0/690 dead transitions. [2024-06-28 03:24:36,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 690 transitions, 11915 flow [2024-06-28 03:24:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:24:36,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:24:36,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 170 transitions. [2024-06-28 03:24:36,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-28 03:24:36,254 INFO L175 Difference]: Start difference. First operand has 589 places, 649 transitions, 8833 flow. Second operand 12 states and 170 transitions. [2024-06-28 03:24:36,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 690 transitions, 11915 flow [2024-06-28 03:24:39,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 690 transitions, 11536 flow, removed 12 selfloop flow, removed 19 redundant places. [2024-06-28 03:24:39,540 INFO L231 Difference]: Finished difference. Result has 582 places, 658 transitions, 9071 flow [2024-06-28 03:24:39,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8454, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9071, PETRI_PLACES=582, PETRI_TRANSITIONS=658} [2024-06-28 03:24:39,541 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 550 predicate places. [2024-06-28 03:24:39,541 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 658 transitions, 9071 flow [2024-06-28 03:24:39,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:39,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:39,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:39,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 03:24:39,541 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:24:39,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:39,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1246816363, now seen corresponding path program 27 times [2024-06-28 03:24:39,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:39,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161056002] [2024-06-28 03:24:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:40,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161056002] [2024-06-28 03:24:40,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161056002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:40,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:40,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:40,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024183196] [2024-06-28 03:24:40,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:40,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:40,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:40,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:40,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:40,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:24:40,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 658 transitions, 9071 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:40,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:40,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:24:40,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:41,504 INFO L124 PetriNetUnfolderBase]: 1558/2682 cut-off events. [2024-06-28 03:24:41,504 INFO L125 PetriNetUnfolderBase]: For 647217/647217 co-relation queries the response was YES. [2024-06-28 03:24:41,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25399 conditions, 2682 events. 1558/2682 cut-off events. For 647217/647217 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 16095 event pairs, 133 based on Foata normal form. 3/2685 useless extension candidates. Maximal degree in co-relation 25151. Up to 1540 conditions per place. [2024-06-28 03:24:41,552 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 476 selfloop transitions, 209 changer transitions 0/687 dead transitions. [2024-06-28 03:24:41,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 687 transitions, 11606 flow [2024-06-28 03:24:41,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:24:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:24:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-28 03:24:41,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 03:24:41,553 INFO L175 Difference]: Start difference. First operand has 582 places, 658 transitions, 9071 flow. Second operand 12 states and 166 transitions. [2024-06-28 03:24:41,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 687 transitions, 11606 flow [2024-06-28 03:24:44,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 687 transitions, 11066 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 03:24:44,673 INFO L231 Difference]: Finished difference. Result has 585 places, 658 transitions, 8956 flow [2024-06-28 03:24:44,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8531, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8956, PETRI_PLACES=585, PETRI_TRANSITIONS=658} [2024-06-28 03:24:44,674 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 553 predicate places. [2024-06-28 03:24:44,674 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 658 transitions, 8956 flow [2024-06-28 03:24:44,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:44,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:44,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:44,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 03:24:44,674 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:24:44,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:44,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1010641003, now seen corresponding path program 28 times [2024-06-28 03:24:44,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:44,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657235877] [2024-06-28 03:24:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:44,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:45,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:45,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657235877] [2024-06-28 03:24:45,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657235877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:45,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:45,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:45,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484113498] [2024-06-28 03:24:45,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:45,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:45,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:45,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:45,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:45,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:24:45,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 658 transitions, 8956 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:45,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:45,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:24:45,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:46,622 INFO L124 PetriNetUnfolderBase]: 1567/2697 cut-off events. [2024-06-28 03:24:46,622 INFO L125 PetriNetUnfolderBase]: For 653397/653397 co-relation queries the response was YES. [2024-06-28 03:24:46,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25478 conditions, 2697 events. 1567/2697 cut-off events. For 653397/653397 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 16199 event pairs, 142 based on Foata normal form. 3/2700 useless extension candidates. Maximal degree in co-relation 25229. Up to 1548 conditions per place. [2024-06-28 03:24:46,670 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 430 selfloop transitions, 253 changer transitions 0/685 dead transitions. [2024-06-28 03:24:46,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 685 transitions, 11174 flow [2024-06-28 03:24:46,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:24:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:24:46,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-28 03:24:46,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-28 03:24:46,671 INFO L175 Difference]: Start difference. First operand has 585 places, 658 transitions, 8956 flow. Second operand 12 states and 160 transitions. [2024-06-28 03:24:46,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 685 transitions, 11174 flow [2024-06-28 03:24:49,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 685 transitions, 10751 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:24:49,895 INFO L231 Difference]: Finished difference. Result has 587 places, 661 transitions, 9114 flow [2024-06-28 03:24:49,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8539, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9114, PETRI_PLACES=587, PETRI_TRANSITIONS=661} [2024-06-28 03:24:49,896 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 555 predicate places. [2024-06-28 03:24:49,896 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 661 transitions, 9114 flow [2024-06-28 03:24:49,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:49,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:49,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:49,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 03:24:49,896 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:24:49,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:49,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1018684573, now seen corresponding path program 29 times [2024-06-28 03:24:49,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:49,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285418320] [2024-06-28 03:24:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:49,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:50,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:50,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285418320] [2024-06-28 03:24:50,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285418320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:50,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:50,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:50,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127632126] [2024-06-28 03:24:50,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:50,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:50,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:50,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:50,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:50,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:24:50,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 661 transitions, 9114 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:50,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:50,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:24:50,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:51,921 INFO L124 PetriNetUnfolderBase]: 1591/2736 cut-off events. [2024-06-28 03:24:51,921 INFO L125 PetriNetUnfolderBase]: For 704221/704221 co-relation queries the response was YES. [2024-06-28 03:24:51,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26434 conditions, 2736 events. 1591/2736 cut-off events. For 704221/704221 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 16497 event pairs, 146 based on Foata normal form. 3/2739 useless extension candidates. Maximal degree in co-relation 26184. Up to 1568 conditions per place. [2024-06-28 03:24:51,971 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 468 selfloop transitions, 228 changer transitions 0/698 dead transitions. [2024-06-28 03:24:51,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 698 transitions, 11849 flow [2024-06-28 03:24:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:24:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:24:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-28 03:24:51,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 03:24:51,972 INFO L175 Difference]: Start difference. First operand has 587 places, 661 transitions, 9114 flow. Second operand 12 states and 166 transitions. [2024-06-28 03:24:51,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 698 transitions, 11849 flow [2024-06-28 03:24:55,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 698 transitions, 11423 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 03:24:55,582 INFO L231 Difference]: Finished difference. Result has 590 places, 667 transitions, 9287 flow [2024-06-28 03:24:55,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8710, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9287, PETRI_PLACES=590, PETRI_TRANSITIONS=667} [2024-06-28 03:24:55,583 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 558 predicate places. [2024-06-28 03:24:55,583 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 667 transitions, 9287 flow [2024-06-28 03:24:55,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:55,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:55,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:55,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 03:24:55,583 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:24:55,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:55,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1018915213, now seen corresponding path program 30 times [2024-06-28 03:24:55,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:55,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388840361] [2024-06-28 03:24:55,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:55,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:56,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388840361] [2024-06-28 03:24:56,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388840361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:56,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:56,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:56,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391459895] [2024-06-28 03:24:56,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:56,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:56,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:56,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:56,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:56,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:24:56,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 667 transitions, 9287 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:56,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:56,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:24:56,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:57,554 INFO L124 PetriNetUnfolderBase]: 1600/2751 cut-off events. [2024-06-28 03:24:57,554 INFO L125 PetriNetUnfolderBase]: For 713624/713624 co-relation queries the response was YES. [2024-06-28 03:24:57,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26529 conditions, 2751 events. 1600/2751 cut-off events. For 713624/713624 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 16564 event pairs, 142 based on Foata normal form. 3/2754 useless extension candidates. Maximal degree in co-relation 26278. Up to 1576 conditions per place. [2024-06-28 03:24:57,603 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 464 selfloop transitions, 233 changer transitions 0/699 dead transitions. [2024-06-28 03:24:57,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 699 transitions, 11927 flow [2024-06-28 03:24:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:24:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:24:57,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 165 transitions. [2024-06-28 03:24:57,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:24:57,604 INFO L175 Difference]: Start difference. First operand has 590 places, 667 transitions, 9287 flow. Second operand 12 states and 165 transitions. [2024-06-28 03:24:57,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 699 transitions, 11927 flow [2024-06-28 03:25:01,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 699 transitions, 11598 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:25:01,454 INFO L231 Difference]: Finished difference. Result has 594 places, 670 transitions, 9494 flow [2024-06-28 03:25:01,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8961, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9494, PETRI_PLACES=594, PETRI_TRANSITIONS=670} [2024-06-28 03:25:01,455 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 562 predicate places. [2024-06-28 03:25:01,455 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 670 transitions, 9494 flow [2024-06-28 03:25:01,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:01,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:01,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:01,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 03:25:01,455 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:25:01,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:01,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1018921909, now seen corresponding path program 20 times [2024-06-28 03:25:01,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:01,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138872608] [2024-06-28 03:25:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:01,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:02,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:02,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138872608] [2024-06-28 03:25:02,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138872608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:02,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:02,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:25:02,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652049072] [2024-06-28 03:25:02,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:02,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:25:02,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:02,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:25:02,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:25:02,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:25:02,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 670 transitions, 9494 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:02,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:02,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:25:02,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:03,720 INFO L124 PetriNetUnfolderBase]: 1603/2756 cut-off events. [2024-06-28 03:25:03,721 INFO L125 PetriNetUnfolderBase]: For 694876/694876 co-relation queries the response was YES. [2024-06-28 03:25:03,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26692 conditions, 2756 events. 1603/2756 cut-off events. For 694876/694876 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 16628 event pairs, 152 based on Foata normal form. 1/2757 useless extension candidates. Maximal degree in co-relation 26440. Up to 2346 conditions per place. [2024-06-28 03:25:03,771 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 513 selfloop transitions, 171 changer transitions 0/686 dead transitions. [2024-06-28 03:25:03,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 686 transitions, 10974 flow [2024-06-28 03:25:03,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:25:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:25:03,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 03:25:03,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-28 03:25:03,772 INFO L175 Difference]: Start difference. First operand has 594 places, 670 transitions, 9494 flow. Second operand 12 states and 145 transitions. [2024-06-28 03:25:03,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 686 transitions, 10974 flow [2024-06-28 03:25:07,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 686 transitions, 10482 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 03:25:07,788 INFO L231 Difference]: Finished difference. Result has 596 places, 672 transitions, 9431 flow [2024-06-28 03:25:07,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9002, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9431, PETRI_PLACES=596, PETRI_TRANSITIONS=672} [2024-06-28 03:25:07,788 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 564 predicate places. [2024-06-28 03:25:07,789 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 672 transitions, 9431 flow [2024-06-28 03:25:07,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:07,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:07,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:07,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 03:25:07,789 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:25:07,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:07,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1018921723, now seen corresponding path program 31 times [2024-06-28 03:25:07,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:07,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519537039] [2024-06-28 03:25:07,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:07,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:08,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:08,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519537039] [2024-06-28 03:25:08,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519537039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:08,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:08,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:25:08,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804676398] [2024-06-28 03:25:08,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:08,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:25:08,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:08,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:25:08,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:25:08,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:25:08,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 672 transitions, 9431 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:08,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:08,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:25:08,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:09,736 INFO L124 PetriNetUnfolderBase]: 1597/2747 cut-off events. [2024-06-28 03:25:09,736 INFO L125 PetriNetUnfolderBase]: For 686594/686594 co-relation queries the response was YES. [2024-06-28 03:25:09,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25884 conditions, 2747 events. 1597/2747 cut-off events. For 686594/686594 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 16570 event pairs, 139 based on Foata normal form. 3/2750 useless extension candidates. Maximal degree in co-relation 25631. Up to 1577 conditions per place. [2024-06-28 03:25:09,787 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 459 selfloop transitions, 237 changer transitions 0/698 dead transitions. [2024-06-28 03:25:09,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 698 transitions, 11643 flow [2024-06-28 03:25:09,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:25:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:25:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-28 03:25:09,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-28 03:25:09,788 INFO L175 Difference]: Start difference. First operand has 596 places, 672 transitions, 9431 flow. Second operand 12 states and 163 transitions. [2024-06-28 03:25:09,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 698 transitions, 11643 flow [2024-06-28 03:25:13,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 698 transitions, 11206 flow, removed 49 selfloop flow, removed 10 redundant places. [2024-06-28 03:25:13,680 INFO L231 Difference]: Finished difference. Result has 598 places, 672 transitions, 9474 flow [2024-06-28 03:25:13,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8994, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9474, PETRI_PLACES=598, PETRI_TRANSITIONS=672} [2024-06-28 03:25:13,680 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 566 predicate places. [2024-06-28 03:25:13,680 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 672 transitions, 9474 flow [2024-06-28 03:25:13,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:13,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:13,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:13,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-28 03:25:13,680 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:25:13,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:13,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1247000813, now seen corresponding path program 17 times [2024-06-28 03:25:13,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:13,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533082985] [2024-06-28 03:25:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:13,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:14,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:14,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533082985] [2024-06-28 03:25:14,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533082985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:14,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:14,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:25:14,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705688990] [2024-06-28 03:25:14,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:14,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:25:14,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:14,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:25:14,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:25:14,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:25:14,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 672 transitions, 9474 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:14,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:14,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:25:14,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:16,013 INFO L124 PetriNetUnfolderBase]: 1540/2694 cut-off events. [2024-06-28 03:25:16,013 INFO L125 PetriNetUnfolderBase]: For 683037/683037 co-relation queries the response was YES. [2024-06-28 03:25:16,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25898 conditions, 2694 events. 1540/2694 cut-off events. For 683037/683037 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 16584 event pairs, 147 based on Foata normal form. 2/2696 useless extension candidates. Maximal degree in co-relation 25644. Up to 2296 conditions per place. [2024-06-28 03:25:16,055 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 513 selfloop transitions, 81 changer transitions 0/688 dead transitions. [2024-06-28 03:25:16,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 688 transitions, 10736 flow [2024-06-28 03:25:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:25:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:25:16,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 03:25:16,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-28 03:25:16,056 INFO L175 Difference]: Start difference. First operand has 598 places, 672 transitions, 9474 flow. Second operand 12 states and 151 transitions. [2024-06-28 03:25:16,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 688 transitions, 10736 flow [2024-06-28 03:25:19,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 688 transitions, 10256 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 03:25:19,628 INFO L231 Difference]: Finished difference. Result has 599 places, 673 transitions, 9200 flow [2024-06-28 03:25:19,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8994, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9200, PETRI_PLACES=599, PETRI_TRANSITIONS=673} [2024-06-28 03:25:19,629 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 567 predicate places. [2024-06-28 03:25:19,629 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 673 transitions, 9200 flow [2024-06-28 03:25:19,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:19,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:19,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:19,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-28 03:25:19,630 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:25:19,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:19,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1086711109, now seen corresponding path program 21 times [2024-06-28 03:25:19,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:19,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616808962] [2024-06-28 03:25:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:19,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:20,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:20,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616808962] [2024-06-28 03:25:20,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616808962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:20,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:20,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:25:20,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712636311] [2024-06-28 03:25:20,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:20,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:25:20,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:20,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:25:20,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:25:20,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:25:20,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 673 transitions, 9200 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:20,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:20,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:25:20,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:21,871 INFO L124 PetriNetUnfolderBase]: 1609/2768 cut-off events. [2024-06-28 03:25:21,871 INFO L125 PetriNetUnfolderBase]: For 687679/687679 co-relation queries the response was YES. [2024-06-28 03:25:21,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26186 conditions, 2768 events. 1609/2768 cut-off events. For 687679/687679 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 16749 event pairs, 150 based on Foata normal form. 1/2769 useless extension candidates. Maximal degree in co-relation 25931. Up to 2343 conditions per place. [2024-06-28 03:25:21,921 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 525 selfloop transitions, 166 changer transitions 0/693 dead transitions. [2024-06-28 03:25:21,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 693 transitions, 11130 flow [2024-06-28 03:25:21,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:25:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:25:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-28 03:25:21,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36596736596736595 [2024-06-28 03:25:21,922 INFO L175 Difference]: Start difference. First operand has 599 places, 673 transitions, 9200 flow. Second operand 13 states and 157 transitions. [2024-06-28 03:25:21,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 693 transitions, 11130 flow [2024-06-28 03:25:26,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 693 transitions, 10934 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 03:25:26,093 INFO L231 Difference]: Finished difference. Result has 602 places, 677 transitions, 9510 flow [2024-06-28 03:25:26,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9004, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9510, PETRI_PLACES=602, PETRI_TRANSITIONS=677} [2024-06-28 03:25:26,093 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 570 predicate places. [2024-06-28 03:25:26,094 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 677 transitions, 9510 flow [2024-06-28 03:25:26,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:26,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:26,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:26,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-28 03:25:26,094 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:25:26,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:26,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1086715945, now seen corresponding path program 32 times [2024-06-28 03:25:26,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:26,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667886350] [2024-06-28 03:25:26,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:26,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:26,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:26,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:26,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667886350] [2024-06-28 03:25:26,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667886350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:26,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:26,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:25:26,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642367204] [2024-06-28 03:25:26,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:26,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:25:26,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:26,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:25:26,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:25:26,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:25:26,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 677 transitions, 9510 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:26,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:26,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:25:26,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:28,180 INFO L124 PetriNetUnfolderBase]: 1603/2759 cut-off events. [2024-06-28 03:25:28,180 INFO L125 PetriNetUnfolderBase]: For 680328/680328 co-relation queries the response was YES. [2024-06-28 03:25:28,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25781 conditions, 2759 events. 1603/2759 cut-off events. For 680328/680328 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 16692 event pairs, 131 based on Foata normal form. 3/2762 useless extension candidates. Maximal degree in co-relation 25525. Up to 1594 conditions per place. [2024-06-28 03:25:28,229 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 469 selfloop transitions, 232 changer transitions 0/703 dead transitions. [2024-06-28 03:25:28,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 703 transitions, 11744 flow [2024-06-28 03:25:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:25:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:25:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-28 03:25:28,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-28 03:25:28,230 INFO L175 Difference]: Start difference. First operand has 602 places, 677 transitions, 9510 flow. Second operand 12 states and 164 transitions. [2024-06-28 03:25:28,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 703 transitions, 11744 flow [2024-06-28 03:25:31,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 703 transitions, 11439 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-28 03:25:31,789 INFO L231 Difference]: Finished difference. Result has 605 places, 677 transitions, 9675 flow [2024-06-28 03:25:31,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9205, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9675, PETRI_PLACES=605, PETRI_TRANSITIONS=677} [2024-06-28 03:25:31,789 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 573 predicate places. [2024-06-28 03:25:31,789 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 677 transitions, 9675 flow [2024-06-28 03:25:31,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:31,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:31,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:31,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-28 03:25:31,790 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:25:31,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:31,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1045489611, now seen corresponding path program 33 times [2024-06-28 03:25:31,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:31,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097951870] [2024-06-28 03:25:31,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:31,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:32,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:32,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097951870] [2024-06-28 03:25:32,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097951870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:32,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:32,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:25:32,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272823443] [2024-06-28 03:25:32,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:32,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:25:32,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:32,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:25:32,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:25:32,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:25:32,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 677 transitions, 9675 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:32,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:32,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:25:32,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:33,893 INFO L124 PetriNetUnfolderBase]: 1612/2774 cut-off events. [2024-06-28 03:25:33,893 INFO L125 PetriNetUnfolderBase]: For 688411/688411 co-relation queries the response was YES. [2024-06-28 03:25:33,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26388 conditions, 2774 events. 1612/2774 cut-off events. For 688411/688411 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 16820 event pairs, 146 based on Foata normal form. 3/2777 useless extension candidates. Maximal degree in co-relation 26130. Up to 1602 conditions per place. [2024-06-28 03:25:33,944 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 487 selfloop transitions, 221 changer transitions 0/710 dead transitions. [2024-06-28 03:25:33,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 710 transitions, 12054 flow [2024-06-28 03:25:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:25:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:25:33,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-28 03:25:33,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 03:25:33,945 INFO L175 Difference]: Start difference. First operand has 605 places, 677 transitions, 9675 flow. Second operand 12 states and 166 transitions. [2024-06-28 03:25:33,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 710 transitions, 12054 flow [2024-06-28 03:25:38,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 710 transitions, 11605 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:25:38,130 INFO L231 Difference]: Finished difference. Result has 606 places, 680 transitions, 9741 flow [2024-06-28 03:25:38,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9231, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9741, PETRI_PLACES=606, PETRI_TRANSITIONS=680} [2024-06-28 03:25:38,131 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 574 predicate places. [2024-06-28 03:25:38,131 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 680 transitions, 9741 flow [2024-06-28 03:25:38,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:38,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:38,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:38,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-28 03:25:38,131 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:25:38,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:38,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1240560253, now seen corresponding path program 34 times [2024-06-28 03:25:38,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:38,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932211940] [2024-06-28 03:25:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:38,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:38,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:38,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932211940] [2024-06-28 03:25:38,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932211940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:38,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:38,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:25:38,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586755506] [2024-06-28 03:25:38,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:38,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:25:38,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:38,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:25:38,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:25:38,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:25:38,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 680 transitions, 9741 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:38,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:38,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:25:38,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:40,198 INFO L124 PetriNetUnfolderBase]: 1621/2789 cut-off events. [2024-06-28 03:25:40,198 INFO L125 PetriNetUnfolderBase]: For 697202/697202 co-relation queries the response was YES. [2024-06-28 03:25:40,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26543 conditions, 2789 events. 1621/2789 cut-off events. For 697202/697202 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 16929 event pairs, 139 based on Foata normal form. 3/2792 useless extension candidates. Maximal degree in co-relation 26284. Up to 1610 conditions per place. [2024-06-28 03:25:40,249 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 494 selfloop transitions, 221 changer transitions 0/717 dead transitions. [2024-06-28 03:25:40,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 717 transitions, 12190 flow [2024-06-28 03:25:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:25:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:25:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 170 transitions. [2024-06-28 03:25:40,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-28 03:25:40,250 INFO L175 Difference]: Start difference. First operand has 606 places, 680 transitions, 9741 flow. Second operand 12 states and 170 transitions. [2024-06-28 03:25:40,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 717 transitions, 12190 flow [2024-06-28 03:25:44,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 717 transitions, 11448 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 03:25:44,253 INFO L231 Difference]: Finished difference. Result has 607 places, 683 transitions, 9515 flow [2024-06-28 03:25:44,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9008, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9515, PETRI_PLACES=607, PETRI_TRANSITIONS=683} [2024-06-28 03:25:44,254 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 575 predicate places. [2024-06-28 03:25:44,254 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 683 transitions, 9515 flow [2024-06-28 03:25:44,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:44,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:44,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:44,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-28 03:25:44,254 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:25:44,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:44,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1240566949, now seen corresponding path program 22 times [2024-06-28 03:25:44,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:44,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289335783] [2024-06-28 03:25:44,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:44,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:45,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:45,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289335783] [2024-06-28 03:25:45,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289335783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:45,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:45,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:25:45,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601264204] [2024-06-28 03:25:45,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:45,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:25:45,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:45,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:25:45,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:25:45,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:25:45,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 683 transitions, 9515 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:45,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:45,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:25:45,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:46,514 INFO L124 PetriNetUnfolderBase]: 1619/2786 cut-off events. [2024-06-28 03:25:46,514 INFO L125 PetriNetUnfolderBase]: For 655420/655420 co-relation queries the response was YES. [2024-06-28 03:25:46,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26248 conditions, 2786 events. 1619/2786 cut-off events. For 655420/655420 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 16885 event pairs, 153 based on Foata normal form. 1/2787 useless extension candidates. Maximal degree in co-relation 25988. Up to 2376 conditions per place. [2024-06-28 03:25:46,567 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 540 selfloop transitions, 155 changer transitions 0/697 dead transitions. [2024-06-28 03:25:46,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 697 transitions, 10939 flow [2024-06-28 03:25:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:25:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:25:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 03:25:46,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-28 03:25:46,568 INFO L175 Difference]: Start difference. First operand has 607 places, 683 transitions, 9515 flow. Second operand 12 states and 148 transitions. [2024-06-28 03:25:46,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 697 transitions, 10939 flow [2024-06-28 03:25:50,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 697 transitions, 10370 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-06-28 03:25:50,569 INFO L231 Difference]: Finished difference. Result has 608 places, 683 transitions, 9261 flow [2024-06-28 03:25:50,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8946, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9261, PETRI_PLACES=608, PETRI_TRANSITIONS=683} [2024-06-28 03:25:50,569 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 576 predicate places. [2024-06-28 03:25:50,569 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 683 transitions, 9261 flow [2024-06-28 03:25:50,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:50,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:50,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:50,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-28 03:25:50,569 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:25:50,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:50,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1045252461, now seen corresponding path program 35 times [2024-06-28 03:25:50,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:50,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053832045] [2024-06-28 03:25:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:50,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:51,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:51,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053832045] [2024-06-28 03:25:51,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053832045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:51,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:51,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:25:51,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647090234] [2024-06-28 03:25:51,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:51,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:25:51,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:51,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:25:51,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:25:51,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:25:51,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 683 transitions, 9261 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:51,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:51,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:25:51,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:52,581 INFO L124 PetriNetUnfolderBase]: 1613/2777 cut-off events. [2024-06-28 03:25:52,581 INFO L125 PetriNetUnfolderBase]: For 644976/644976 co-relation queries the response was YES. [2024-06-28 03:25:52,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25307 conditions, 2777 events. 1613/2777 cut-off events. For 644976/644976 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 16833 event pairs, 137 based on Foata normal form. 3/2780 useless extension candidates. Maximal degree in co-relation 25046. Up to 1603 conditions per place. [2024-06-28 03:25:52,632 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 489 selfloop transitions, 223 changer transitions 0/714 dead transitions. [2024-06-28 03:25:52,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 714 transitions, 11256 flow [2024-06-28 03:25:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:25:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:25:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 168 transitions. [2024-06-28 03:25:52,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 03:25:52,633 INFO L175 Difference]: Start difference. First operand has 608 places, 683 transitions, 9261 flow. Second operand 12 states and 168 transitions. [2024-06-28 03:25:52,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 714 transitions, 11256 flow [2024-06-28 03:25:56,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 714 transitions, 10903 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-28 03:25:56,622 INFO L231 Difference]: Finished difference. Result has 609 places, 683 transitions, 9360 flow [2024-06-28 03:25:56,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8908, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9360, PETRI_PLACES=609, PETRI_TRANSITIONS=683} [2024-06-28 03:25:56,623 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 577 predicate places. [2024-06-28 03:25:56,623 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 683 transitions, 9360 flow [2024-06-28 03:25:56,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:56,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:56,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:56,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-28 03:25:56,623 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:25:56,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:56,623 INFO L85 PathProgramCache]: Analyzing trace with hash -289726815, now seen corresponding path program 18 times [2024-06-28 03:25:56,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:56,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954057456] [2024-06-28 03:25:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:56,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:57,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:57,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954057456] [2024-06-28 03:25:57,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954057456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:57,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:57,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:25:57,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757340420] [2024-06-28 03:25:57,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:57,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:25:57,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:57,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:25:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:25:57,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:25:57,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 683 transitions, 9360 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:57,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:57,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:25:57,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:58,637 INFO L124 PetriNetUnfolderBase]: 1557/2719 cut-off events. [2024-06-28 03:25:58,637 INFO L125 PetriNetUnfolderBase]: For 684126/684129 co-relation queries the response was YES. [2024-06-28 03:25:58,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25853 conditions, 2719 events. 1557/2719 cut-off events. For 684126/684129 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 16898 event pairs, 192 based on Foata normal form. 2/2711 useless extension candidates. Maximal degree in co-relation 25591. Up to 2198 conditions per place. [2024-06-28 03:25:58,687 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 528 selfloop transitions, 84 changer transitions 0/708 dead transitions. [2024-06-28 03:25:58,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 708 transitions, 11028 flow [2024-06-28 03:25:58,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:25:58,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:25:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 03:25:58,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:25:58,688 INFO L175 Difference]: Start difference. First operand has 609 places, 683 transitions, 9360 flow. Second operand 12 states and 153 transitions. [2024-06-28 03:25:58,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 708 transitions, 11028 flow [2024-06-28 03:26:01,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 708 transitions, 10530 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 03:26:02,057 INFO L231 Difference]: Finished difference. Result has 609 places, 684 transitions, 9072 flow [2024-06-28 03:26:02,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8862, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9072, PETRI_PLACES=609, PETRI_TRANSITIONS=684} [2024-06-28 03:26:02,057 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 577 predicate places. [2024-06-28 03:26:02,057 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 684 transitions, 9072 flow [2024-06-28 03:26:02,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:02,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:02,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:02,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-28 03:26:02,058 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:26:02,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:02,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1294504046, now seen corresponding path program 1 times [2024-06-28 03:26:02,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:02,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466372906] [2024-06-28 03:26:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:02,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:02,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:02,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466372906] [2024-06-28 03:26:02,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466372906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:02,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:02,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:26:02,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810418135] [2024-06-28 03:26:02,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:02,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:26:02,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:02,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:26:02,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:26:03,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:26:03,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 684 transitions, 9072 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:03,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:03,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:26:03,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:04,333 INFO L124 PetriNetUnfolderBase]: 1626/2799 cut-off events. [2024-06-28 03:26:04,333 INFO L125 PetriNetUnfolderBase]: For 659527/659527 co-relation queries the response was YES. [2024-06-28 03:26:04,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25503 conditions, 2799 events. 1626/2799 cut-off events. For 659527/659527 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 17072 event pairs, 269 based on Foata normal form. 3/2802 useless extension candidates. Maximal degree in co-relation 25240. Up to 2645 conditions per place. [2024-06-28 03:26:04,385 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 649 selfloop transitions, 62 changer transitions 0/713 dead transitions. [2024-06-28 03:26:04,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 713 transitions, 11018 flow [2024-06-28 03:26:04,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:26:04,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:26:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 163 transitions. [2024-06-28 03:26:04,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3528138528138528 [2024-06-28 03:26:04,386 INFO L175 Difference]: Start difference. First operand has 609 places, 684 transitions, 9072 flow. Second operand 14 states and 163 transitions. [2024-06-28 03:26:04,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 713 transitions, 11018 flow [2024-06-28 03:26:08,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 713 transitions, 10843 flow, removed 17 selfloop flow, removed 14 redundant places. [2024-06-28 03:26:08,310 INFO L231 Difference]: Finished difference. Result has 609 places, 687 transitions, 9125 flow [2024-06-28 03:26:08,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8907, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9125, PETRI_PLACES=609, PETRI_TRANSITIONS=687} [2024-06-28 03:26:08,311 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 577 predicate places. [2024-06-28 03:26:08,311 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 687 transitions, 9125 flow [2024-06-28 03:26:08,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:08,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:08,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:08,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-28 03:26:08,311 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:26:08,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:08,312 INFO L85 PathProgramCache]: Analyzing trace with hash -254993123, now seen corresponding path program 23 times [2024-06-28 03:26:08,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:08,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228134847] [2024-06-28 03:26:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:08,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:09,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:09,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228134847] [2024-06-28 03:26:09,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228134847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:09,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:09,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:26:09,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862974384] [2024-06-28 03:26:09,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:09,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:26:09,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:26:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:26:09,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:26:09,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 687 transitions, 9125 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:09,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:09,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:26:09,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:10,412 INFO L124 PetriNetUnfolderBase]: 1624/2794 cut-off events. [2024-06-28 03:26:10,413 INFO L125 PetriNetUnfolderBase]: For 584442/584442 co-relation queries the response was YES. [2024-06-28 03:26:10,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25136 conditions, 2794 events. 1624/2794 cut-off events. For 584442/584442 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 17001 event pairs, 262 based on Foata normal form. 1/2795 useless extension candidates. Maximal degree in co-relation 24877. Up to 2589 conditions per place. [2024-06-28 03:26:10,458 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 617 selfloop transitions, 90 changer transitions 0/709 dead transitions. [2024-06-28 03:26:10,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 709 transitions, 10595 flow [2024-06-28 03:26:10,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:26:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:26:10,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-28 03:26:10,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3473193473193473 [2024-06-28 03:26:10,459 INFO L175 Difference]: Start difference. First operand has 609 places, 687 transitions, 9125 flow. Second operand 13 states and 149 transitions. [2024-06-28 03:26:10,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 709 transitions, 10595 flow [2024-06-28 03:26:14,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 709 transitions, 10387 flow, removed 44 selfloop flow, removed 12 redundant places. [2024-06-28 03:26:14,094 INFO L231 Difference]: Finished difference. Result has 610 places, 687 transitions, 9120 flow [2024-06-28 03:26:14,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8917, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9120, PETRI_PLACES=610, PETRI_TRANSITIONS=687} [2024-06-28 03:26:14,094 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 578 predicate places. [2024-06-28 03:26:14,094 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 687 transitions, 9120 flow [2024-06-28 03:26:14,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:14,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:14,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:14,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-28 03:26:14,095 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:26:14,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:14,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1788127597, now seen corresponding path program 19 times [2024-06-28 03:26:14,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:14,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091290790] [2024-06-28 03:26:14,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:14,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:15,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:15,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091290790] [2024-06-28 03:26:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091290790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:15,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:15,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:26:15,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042360632] [2024-06-28 03:26:15,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:15,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:26:15,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:15,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:26:15,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:26:15,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:26:15,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 687 transitions, 9120 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:15,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:15,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:26:15,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:16,189 INFO L124 PetriNetUnfolderBase]: 1559/2724 cut-off events. [2024-06-28 03:26:16,190 INFO L125 PetriNetUnfolderBase]: For 591654/591655 co-relation queries the response was YES. [2024-06-28 03:26:16,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24547 conditions, 2724 events. 1559/2724 cut-off events. For 591654/591655 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 16894 event pairs, 241 based on Foata normal form. 2/2718 useless extension candidates. Maximal degree in co-relation 24287. Up to 2336 conditions per place. [2024-06-28 03:26:16,239 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 537 selfloop transitions, 76 changer transitions 0/709 dead transitions. [2024-06-28 03:26:16,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 709 transitions, 10402 flow [2024-06-28 03:26:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:26:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:26:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 03:26:16,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-28 03:26:16,240 INFO L175 Difference]: Start difference. First operand has 610 places, 687 transitions, 9120 flow. Second operand 12 states and 151 transitions. [2024-06-28 03:26:16,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 709 transitions, 10402 flow [2024-06-28 03:26:19,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 709 transitions, 10217 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 03:26:19,793 INFO L231 Difference]: Finished difference. Result has 611 places, 687 transitions, 9101 flow [2024-06-28 03:26:19,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8935, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9101, PETRI_PLACES=611, PETRI_TRANSITIONS=687} [2024-06-28 03:26:19,793 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 579 predicate places. [2024-06-28 03:26:19,793 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 687 transitions, 9101 flow [2024-06-28 03:26:19,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:19,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:19,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:19,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-28 03:26:19,793 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:26:19,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash -2041967524, now seen corresponding path program 2 times [2024-06-28 03:26:19,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:19,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610024999] [2024-06-28 03:26:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:19,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:20,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:20,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610024999] [2024-06-28 03:26:20,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610024999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:20,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:20,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:26:20,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902936265] [2024-06-28 03:26:20,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:20,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:26:20,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:26:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:26:20,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:26:20,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 687 transitions, 9101 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:20,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:20,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:26:20,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:22,033 INFO L124 PetriNetUnfolderBase]: 1630/2806 cut-off events. [2024-06-28 03:26:22,034 INFO L125 PetriNetUnfolderBase]: For 577600/577600 co-relation queries the response was YES. [2024-06-28 03:26:22,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24827 conditions, 2806 events. 1630/2806 cut-off events. For 577600/577600 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 17109 event pairs, 281 based on Foata normal form. 3/2809 useless extension candidates. Maximal degree in co-relation 24566. Up to 2689 conditions per place. [2024-06-28 03:26:22,089 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 665 selfloop transitions, 45 changer transitions 0/712 dead transitions. [2024-06-28 03:26:22,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 712 transitions, 10669 flow [2024-06-28 03:26:22,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:26:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:26:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-28 03:26:22,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351981351981352 [2024-06-28 03:26:22,089 INFO L175 Difference]: Start difference. First operand has 611 places, 687 transitions, 9101 flow. Second operand 13 states and 151 transitions. [2024-06-28 03:26:22,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 712 transitions, 10669 flow [2024-06-28 03:26:25,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 712 transitions, 10486 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-06-28 03:26:25,515 INFO L231 Difference]: Finished difference. Result has 609 places, 690 transitions, 9109 flow [2024-06-28 03:26:25,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8918, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9109, PETRI_PLACES=609, PETRI_TRANSITIONS=690} [2024-06-28 03:26:25,515 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 577 predicate places. [2024-06-28 03:26:25,515 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 690 transitions, 9109 flow [2024-06-28 03:26:25,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:25,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:25,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:25,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-28 03:26:25,516 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:26:25,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash -252191777, now seen corresponding path program 36 times [2024-06-28 03:26:25,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:25,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507858736] [2024-06-28 03:26:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:25,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:26,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:26,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507858736] [2024-06-28 03:26:26,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507858736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:26,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:26,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:26:26,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921068469] [2024-06-28 03:26:26,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:26,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:26:26,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:26,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:26:26,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:26:26,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:26:26,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 690 transitions, 9109 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:26,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:26,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:26:26,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:27,259 INFO L124 PetriNetUnfolderBase]: 1634/2813 cut-off events. [2024-06-28 03:26:27,260 INFO L125 PetriNetUnfolderBase]: For 543832/543832 co-relation queries the response was YES. [2024-06-28 03:26:27,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24539 conditions, 2813 events. 1634/2813 cut-off events. For 543832/543832 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 17158 event pairs, 269 based on Foata normal form. 3/2816 useless extension candidates. Maximal degree in co-relation 24281. Up to 2647 conditions per place. [2024-06-28 03:26:27,310 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 640 selfloop transitions, 70 changer transitions 0/712 dead transitions. [2024-06-28 03:26:27,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 712 transitions, 10643 flow [2024-06-28 03:26:27,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:26:27,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:26:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:26:27,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-28 03:26:27,311 INFO L175 Difference]: Start difference. First operand has 609 places, 690 transitions, 9109 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:26:27,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 712 transitions, 10643 flow [2024-06-28 03:26:30,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 712 transitions, 10474 flow, removed 42 selfloop flow, removed 11 redundant places. [2024-06-28 03:26:30,379 INFO L231 Difference]: Finished difference. Result has 609 places, 692 transitions, 9149 flow [2024-06-28 03:26:30,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8940, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9149, PETRI_PLACES=609, PETRI_TRANSITIONS=692} [2024-06-28 03:26:30,379 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 577 predicate places. [2024-06-28 03:26:30,379 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 692 transitions, 9149 flow [2024-06-28 03:26:30,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:30,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:30,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:30,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-28 03:26:30,380 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:26:30,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash -137500213, now seen corresponding path program 20 times [2024-06-28 03:26:30,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:30,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190479712] [2024-06-28 03:26:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:30,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:31,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:31,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190479712] [2024-06-28 03:26:31,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190479712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:31,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:31,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:26:31,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264770481] [2024-06-28 03:26:31,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:31,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:26:31,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:31,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:26:31,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:26:31,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:26:31,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 692 transitions, 9149 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:31,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:31,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:26:31,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:32,190 INFO L124 PetriNetUnfolderBase]: 1576/2756 cut-off events. [2024-06-28 03:26:32,190 INFO L125 PetriNetUnfolderBase]: For 535323/535323 co-relation queries the response was YES. [2024-06-28 03:26:32,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24280 conditions, 2756 events. 1576/2756 cut-off events. For 535323/535323 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 17139 event pairs, 197 based on Foata normal form. 2/2750 useless extension candidates. Maximal degree in co-relation 24021. Up to 2332 conditions per place. [2024-06-28 03:26:32,239 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 512 selfloop transitions, 102 changer transitions 0/710 dead transitions. [2024-06-28 03:26:32,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 710 transitions, 10459 flow [2024-06-28 03:26:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:26:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:26:32,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:26:32,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-28 03:26:32,240 INFO L175 Difference]: Start difference. First operand has 609 places, 692 transitions, 9149 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:26:32,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 710 transitions, 10459 flow [2024-06-28 03:26:35,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 710 transitions, 10283 flow, removed 22 selfloop flow, removed 12 redundant places. [2024-06-28 03:26:35,340 INFO L231 Difference]: Finished difference. Result has 608 places, 693 transitions, 9229 flow [2024-06-28 03:26:35,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8973, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9229, PETRI_PLACES=608, PETRI_TRANSITIONS=693} [2024-06-28 03:26:35,341 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 576 predicate places. [2024-06-28 03:26:35,341 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 693 transitions, 9229 flow [2024-06-28 03:26:35,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:35,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:35,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:35,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-28 03:26:35,341 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:26:35,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:35,341 INFO L85 PathProgramCache]: Analyzing trace with hash -136905443, now seen corresponding path program 24 times [2024-06-28 03:26:35,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:35,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519504230] [2024-06-28 03:26:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:35,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:36,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:36,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519504230] [2024-06-28 03:26:36,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519504230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:36,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:36,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:26:36,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770943574] [2024-06-28 03:26:36,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:36,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:26:36,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:36,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:26:36,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:26:36,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:26:36,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 693 transitions, 9229 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:36,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:36,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:26:36,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:37,247 INFO L124 PetriNetUnfolderBase]: 1646/2833 cut-off events. [2024-06-28 03:26:37,247 INFO L125 PetriNetUnfolderBase]: For 517425/517425 co-relation queries the response was YES. [2024-06-28 03:26:37,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24931 conditions, 2833 events. 1646/2833 cut-off events. For 517425/517425 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 17263 event pairs, 490 based on Foata normal form. 1/2834 useless extension candidates. Maximal degree in co-relation 24674. Up to 2635 conditions per place. [2024-06-28 03:26:37,298 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 621 selfloop transitions, 90 changer transitions 0/713 dead transitions. [2024-06-28 03:26:37,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 713 transitions, 11228 flow [2024-06-28 03:26:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:26:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:26:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-28 03:26:37,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3473193473193473 [2024-06-28 03:26:37,299 INFO L175 Difference]: Start difference. First operand has 608 places, 693 transitions, 9229 flow. Second operand 13 states and 149 transitions. [2024-06-28 03:26:37,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 713 transitions, 11228 flow [2024-06-28 03:26:40,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 713 transitions, 10972 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 03:26:40,261 INFO L231 Difference]: Finished difference. Result has 611 places, 697 transitions, 9349 flow [2024-06-28 03:26:40,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8979, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9349, PETRI_PLACES=611, PETRI_TRANSITIONS=697} [2024-06-28 03:26:40,261 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 579 predicate places. [2024-06-28 03:26:40,261 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 697 transitions, 9349 flow [2024-06-28 03:26:40,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:40,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:40,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:40,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-28 03:26:40,261 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:26:40,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:40,262 INFO L85 PathProgramCache]: Analyzing trace with hash -136900607, now seen corresponding path program 37 times [2024-06-28 03:26:40,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:40,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710914295] [2024-06-28 03:26:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:40,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:41,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:41,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710914295] [2024-06-28 03:26:41,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710914295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:41,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:41,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:26:41,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647911930] [2024-06-28 03:26:41,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:41,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:26:41,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:26:41,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:26:41,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:26:41,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 697 transitions, 9349 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:41,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:41,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:26:41,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:42,003 INFO L124 PetriNetUnfolderBase]: 1680/2890 cut-off events. [2024-06-28 03:26:42,003 INFO L125 PetriNetUnfolderBase]: For 605498/605498 co-relation queries the response was YES. [2024-06-28 03:26:42,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26055 conditions, 2890 events. 1680/2890 cut-off events. For 605498/605498 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 17653 event pairs, 124 based on Foata normal form. 3/2893 useless extension candidates. Maximal degree in co-relation 25798. Up to 1342 conditions per place. [2024-06-28 03:26:42,057 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 405 selfloop transitions, 334 changer transitions 0/741 dead transitions. [2024-06-28 03:26:42,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 741 transitions, 11940 flow [2024-06-28 03:26:42,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:26:42,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:26:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-28 03:26:42,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325068870523416 [2024-06-28 03:26:42,057 INFO L175 Difference]: Start difference. First operand has 611 places, 697 transitions, 9349 flow. Second operand 11 states and 157 transitions. [2024-06-28 03:26:42,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 741 transitions, 11940 flow [2024-06-28 03:26:45,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 741 transitions, 11750 flow, removed 60 selfloop flow, removed 11 redundant places. [2024-06-28 03:26:45,935 INFO L231 Difference]: Finished difference. Result has 611 places, 705 transitions, 10026 flow [2024-06-28 03:26:45,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9159, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10026, PETRI_PLACES=611, PETRI_TRANSITIONS=705} [2024-06-28 03:26:45,936 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 579 predicate places. [2024-06-28 03:26:45,936 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 705 transitions, 10026 flow [2024-06-28 03:26:45,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:45,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:45,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:45,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-28 03:26:45,936 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:26:45,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:45,937 INFO L85 PathProgramCache]: Analyzing trace with hash -171400931, now seen corresponding path program 25 times [2024-06-28 03:26:45,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:45,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558533354] [2024-06-28 03:26:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:45,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:46,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:46,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:46,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558533354] [2024-06-28 03:26:46,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558533354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:46,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:46,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:26:46,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008706986] [2024-06-28 03:26:46,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:46,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:26:46,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:46,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:26:46,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:26:46,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:26:46,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 705 transitions, 10026 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:46,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:46,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:26:46,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:47,859 INFO L124 PetriNetUnfolderBase]: 1678/2887 cut-off events. [2024-06-28 03:26:47,859 INFO L125 PetriNetUnfolderBase]: For 570953/570953 co-relation queries the response was YES. [2024-06-28 03:26:47,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26588 conditions, 2887 events. 1678/2887 cut-off events. For 570953/570953 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 17659 event pairs, 173 based on Foata normal form. 1/2888 useless extension candidates. Maximal degree in co-relation 26332. Up to 2468 conditions per place. [2024-06-28 03:26:47,918 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 523 selfloop transitions, 196 changer transitions 0/721 dead transitions. [2024-06-28 03:26:47,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 721 transitions, 11504 flow [2024-06-28 03:26:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:26:47,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:26:47,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:26:47,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-28 03:26:47,919 INFO L175 Difference]: Start difference. First operand has 611 places, 705 transitions, 10026 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:26:47,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 721 transitions, 11504 flow [2024-06-28 03:26:51,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 721 transitions, 11181 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-28 03:26:51,439 INFO L231 Difference]: Finished difference. Result has 613 places, 705 transitions, 10109 flow [2024-06-28 03:26:51,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9703, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10109, PETRI_PLACES=613, PETRI_TRANSITIONS=705} [2024-06-28 03:26:51,439 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 581 predicate places. [2024-06-28 03:26:51,439 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 705 transitions, 10109 flow [2024-06-28 03:26:51,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:51,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:51,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:51,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-28 03:26:51,440 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:26:51,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:51,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1837623591, now seen corresponding path program 38 times [2024-06-28 03:26:51,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:51,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993620421] [2024-06-28 03:26:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:51,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:52,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:52,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993620421] [2024-06-28 03:26:52,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993620421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:52,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:52,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:26:52,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551112104] [2024-06-28 03:26:52,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:52,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:26:52,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:52,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:26:52,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:26:52,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:26:52,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 705 transitions, 10109 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:52,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:52,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:26:52,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:53,218 INFO L124 PetriNetUnfolderBase]: 1687/2902 cut-off events. [2024-06-28 03:26:53,219 INFO L125 PetriNetUnfolderBase]: For 584753/584753 co-relation queries the response was YES. [2024-06-28 03:26:53,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26764 conditions, 2902 events. 1687/2902 cut-off events. For 584753/584753 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 17744 event pairs, 122 based on Foata normal form. 3/2905 useless extension candidates. Maximal degree in co-relation 26509. Up to 1347 conditions per place. [2024-06-28 03:26:53,272 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 403 selfloop transitions, 342 changer transitions 0/747 dead transitions. [2024-06-28 03:26:53,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 747 transitions, 12643 flow [2024-06-28 03:26:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:26:53,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:26:53,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-28 03:26:53,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297520661157025 [2024-06-28 03:26:53,274 INFO L175 Difference]: Start difference. First operand has 613 places, 705 transitions, 10109 flow. Second operand 11 states and 156 transitions. [2024-06-28 03:26:53,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 747 transitions, 12643 flow [2024-06-28 03:26:56,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 747 transitions, 12252 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:26:56,412 INFO L231 Difference]: Finished difference. Result has 614 places, 708 transitions, 10490 flow [2024-06-28 03:26:56,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9722, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10490, PETRI_PLACES=614, PETRI_TRANSITIONS=708} [2024-06-28 03:26:56,412 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 582 predicate places. [2024-06-28 03:26:56,412 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 708 transitions, 10490 flow [2024-06-28 03:26:56,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:56,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:56,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:56,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-28 03:26:56,413 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:26:56,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:56,413 INFO L85 PathProgramCache]: Analyzing trace with hash -171394235, now seen corresponding path program 39 times [2024-06-28 03:26:56,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:56,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179642952] [2024-06-28 03:26:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:56,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:57,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:57,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179642952] [2024-06-28 03:26:57,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179642952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:57,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:57,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:26:57,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380461026] [2024-06-28 03:26:57,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:57,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:26:57,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:57,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:26:57,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:26:57,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:26:57,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 708 transitions, 10490 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:57,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:57,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:26:57,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:58,164 INFO L124 PetriNetUnfolderBase]: 1681/2893 cut-off events. [2024-06-28 03:26:58,164 INFO L125 PetriNetUnfolderBase]: For 544355/544355 co-relation queries the response was YES. [2024-06-28 03:26:58,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26662 conditions, 2893 events. 1681/2893 cut-off events. For 544355/544355 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 17717 event pairs, 124 based on Foata normal form. 3/2896 useless extension candidates. Maximal degree in co-relation 26407. Up to 1343 conditions per place. [2024-06-28 03:26:58,222 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 388 selfloop transitions, 351 changer transitions 0/741 dead transitions. [2024-06-28 03:26:58,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 741 transitions, 12539 flow [2024-06-28 03:26:58,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:26:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:26:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-28 03:26:58,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-28 03:26:58,223 INFO L175 Difference]: Start difference. First operand has 614 places, 708 transitions, 10490 flow. Second operand 11 states and 152 transitions. [2024-06-28 03:26:58,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 741 transitions, 12539 flow [2024-06-28 03:27:01,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 741 transitions, 11768 flow, removed 36 selfloop flow, removed 12 redundant places. [2024-06-28 03:27:01,223 INFO L231 Difference]: Finished difference. Result has 613 places, 708 transitions, 10447 flow [2024-06-28 03:27:01,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9725, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10447, PETRI_PLACES=613, PETRI_TRANSITIONS=708} [2024-06-28 03:27:01,223 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 581 predicate places. [2024-06-28 03:27:01,224 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 708 transitions, 10447 flow [2024-06-28 03:27:01,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:01,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:01,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:01,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-28 03:27:01,224 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:27:01,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash 494313, now seen corresponding path program 26 times [2024-06-28 03:27:01,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:01,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058988173] [2024-06-28 03:27:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:01,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:02,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:02,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058988173] [2024-06-28 03:27:02,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058988173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:02,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:02,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547800136] [2024-06-28 03:27:02,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:02,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:02,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:02,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:02,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:27:02,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 708 transitions, 10447 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:02,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:02,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:27:02,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:03,118 INFO L124 PetriNetUnfolderBase]: 1684/2898 cut-off events. [2024-06-28 03:27:03,118 INFO L125 PetriNetUnfolderBase]: For 505227/505227 co-relation queries the response was YES. [2024-06-28 03:27:03,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26634 conditions, 2898 events. 1684/2898 cut-off events. For 505227/505227 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 17724 event pairs, 153 based on Foata normal form. 1/2899 useless extension candidates. Maximal degree in co-relation 26381. Up to 2482 conditions per place. [2024-06-28 03:27:03,171 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 534 selfloop transitions, 188 changer transitions 0/724 dead transitions. [2024-06-28 03:27:03,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 724 transitions, 12019 flow [2024-06-28 03:27:03,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:03,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:27:03,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691460055096419 [2024-06-28 03:27:03,172 INFO L175 Difference]: Start difference. First operand has 613 places, 708 transitions, 10447 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:27:03,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 724 transitions, 12019 flow [2024-06-28 03:27:05,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 724 transitions, 11282 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 03:27:05,902 INFO L231 Difference]: Finished difference. Result has 611 places, 710 transitions, 10195 flow [2024-06-28 03:27:05,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9710, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10195, PETRI_PLACES=611, PETRI_TRANSITIONS=710} [2024-06-28 03:27:05,902 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 579 predicate places. [2024-06-28 03:27:05,902 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 710 transitions, 10195 flow [2024-06-28 03:27:05,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:05,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:05,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:05,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-28 03:27:05,902 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:27:05,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:05,903 INFO L85 PathProgramCache]: Analyzing trace with hash 494499, now seen corresponding path program 40 times [2024-06-28 03:27:05,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:05,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774896967] [2024-06-28 03:27:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:05,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:06,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:06,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774896967] [2024-06-28 03:27:06,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774896967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:06,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:06,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85062753] [2024-06-28 03:27:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:06,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:06,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:06,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:27:06,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 710 transitions, 10195 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:06,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:06,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:27:06,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:07,616 INFO L124 PetriNetUnfolderBase]: 1723/2961 cut-off events. [2024-06-28 03:27:07,616 INFO L125 PetriNetUnfolderBase]: For 598472/598472 co-relation queries the response was YES. [2024-06-28 03:27:07,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27612 conditions, 2961 events. 1723/2961 cut-off events. For 598472/598472 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 18133 event pairs, 133 based on Foata normal form. 3/2964 useless extension candidates. Maximal degree in co-relation 27361. Up to 1380 conditions per place. [2024-06-28 03:27:07,669 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 431 selfloop transitions, 325 changer transitions 0/758 dead transitions. [2024-06-28 03:27:07,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 758 transitions, 13215 flow [2024-06-28 03:27:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:07,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-28 03:27:07,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42699724517906334 [2024-06-28 03:27:07,670 INFO L175 Difference]: Start difference. First operand has 611 places, 710 transitions, 10195 flow. Second operand 11 states and 155 transitions. [2024-06-28 03:27:07,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 758 transitions, 13215 flow [2024-06-28 03:27:11,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 758 transitions, 12742 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-28 03:27:11,109 INFO L231 Difference]: Finished difference. Result has 613 places, 719 transitions, 10605 flow [2024-06-28 03:27:11,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9734, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10605, PETRI_PLACES=613, PETRI_TRANSITIONS=719} [2024-06-28 03:27:11,109 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 581 predicate places. [2024-06-28 03:27:11,109 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 719 transitions, 10605 flow [2024-06-28 03:27:11,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:11,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:11,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:11,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-28 03:27:11,110 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:27:11,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:11,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1671977947, now seen corresponding path program 41 times [2024-06-28 03:27:11,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:11,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74900260] [2024-06-28 03:27:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:11,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:11,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:11,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74900260] [2024-06-28 03:27:11,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74900260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:11,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:11,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:11,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150191155] [2024-06-28 03:27:11,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:11,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:11,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:11,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:27:11,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 719 transitions, 10605 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:11,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:11,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:27:11,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:12,834 INFO L124 PetriNetUnfolderBase]: 1732/2976 cut-off events. [2024-06-28 03:27:12,834 INFO L125 PetriNetUnfolderBase]: For 592831/592831 co-relation queries the response was YES. [2024-06-28 03:27:12,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28016 conditions, 2976 events. 1732/2976 cut-off events. For 592831/592831 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 18271 event pairs, 131 based on Foata normal form. 3/2979 useless extension candidates. Maximal degree in co-relation 27764. Up to 1388 conditions per place. [2024-06-28 03:27:12,887 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 453 selfloop transitions, 312 changer transitions 0/767 dead transitions. [2024-06-28 03:27:12,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 767 transitions, 13594 flow [2024-06-28 03:27:12,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-28 03:27:12,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325068870523416 [2024-06-28 03:27:12,888 INFO L175 Difference]: Start difference. First operand has 613 places, 719 transitions, 10605 flow. Second operand 11 states and 157 transitions. [2024-06-28 03:27:12,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 767 transitions, 13594 flow [2024-06-28 03:27:16,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 767 transitions, 13162 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 03:27:16,167 INFO L231 Difference]: Finished difference. Result has 616 places, 722 transitions, 10901 flow [2024-06-28 03:27:16,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10192, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10901, PETRI_PLACES=616, PETRI_TRANSITIONS=722} [2024-06-28 03:27:16,167 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 584 predicate places. [2024-06-28 03:27:16,168 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 722 transitions, 10901 flow [2024-06-28 03:27:16,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:16,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:16,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:16,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-28 03:27:16,168 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:27:16,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:16,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1671984643, now seen corresponding path program 27 times [2024-06-28 03:27:16,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:16,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480346153] [2024-06-28 03:27:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:16,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:17,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:17,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480346153] [2024-06-28 03:27:17,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480346153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:17,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:17,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:17,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71033828] [2024-06-28 03:27:17,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:17,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:17,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:17,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:17,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:27:17,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 722 transitions, 10901 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:17,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:17,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:27:17,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:18,065 INFO L124 PetriNetUnfolderBase]: 1735/2981 cut-off events. [2024-06-28 03:27:18,066 INFO L125 PetriNetUnfolderBase]: For 562631/562631 co-relation queries the response was YES. [2024-06-28 03:27:18,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28107 conditions, 2981 events. 1735/2981 cut-off events. For 562631/562631 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 18284 event pairs, 163 based on Foata normal form. 1/2982 useless extension candidates. Maximal degree in co-relation 27856. Up to 2565 conditions per place. [2024-06-28 03:27:18,121 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 561 selfloop transitions, 175 changer transitions 0/738 dead transitions. [2024-06-28 03:27:18,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 738 transitions, 12497 flow [2024-06-28 03:27:18,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:27:18,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-28 03:27:18,122 INFO L175 Difference]: Start difference. First operand has 616 places, 722 transitions, 10901 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:27:18,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 738 transitions, 12497 flow [2024-06-28 03:27:21,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 738 transitions, 11738 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-28 03:27:21,083 INFO L231 Difference]: Finished difference. Result has 616 places, 724 transitions, 10597 flow [2024-06-28 03:27:21,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10142, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10597, PETRI_PLACES=616, PETRI_TRANSITIONS=724} [2024-06-28 03:27:21,084 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 584 predicate places. [2024-06-28 03:27:21,084 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 724 transitions, 10597 flow [2024-06-28 03:27:21,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:21,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:21,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:21,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-28 03:27:21,084 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:27:21,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash -5761611, now seen corresponding path program 42 times [2024-06-28 03:27:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:21,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873280313] [2024-06-28 03:27:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:21,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:21,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:21,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873280313] [2024-06-28 03:27:21,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873280313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:21,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:21,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:21,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938807722] [2024-06-28 03:27:21,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:21,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:21,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:21,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:21,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:21,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:27:21,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 724 transitions, 10597 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:21,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:21,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:27:21,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:22,927 INFO L124 PetriNetUnfolderBase]: 1744/2996 cut-off events. [2024-06-28 03:27:22,927 INFO L125 PetriNetUnfolderBase]: For 579798/579798 co-relation queries the response was YES. [2024-06-28 03:27:22,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27745 conditions, 2996 events. 1744/2996 cut-off events. For 579798/579798 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 18409 event pairs, 130 based on Foata normal form. 3/2999 useless extension candidates. Maximal degree in co-relation 27495. Up to 1401 conditions per place. [2024-06-28 03:27:22,981 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 462 selfloop transitions, 312 changer transitions 0/776 dead transitions. [2024-06-28 03:27:22,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 776 transitions, 13631 flow [2024-06-28 03:27:22,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:22,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 03:27:22,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44077134986225897 [2024-06-28 03:27:22,982 INFO L175 Difference]: Start difference. First operand has 616 places, 724 transitions, 10597 flow. Second operand 11 states and 160 transitions. [2024-06-28 03:27:22,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 776 transitions, 13631 flow [2024-06-28 03:27:25,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 776 transitions, 13188 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-28 03:27:25,723 INFO L231 Difference]: Finished difference. Result has 618 places, 727 transitions, 10868 flow [2024-06-28 03:27:25,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10166, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10868, PETRI_PLACES=618, PETRI_TRANSITIONS=727} [2024-06-28 03:27:25,723 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 586 predicate places. [2024-06-28 03:27:25,723 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 727 transitions, 10868 flow [2024-06-28 03:27:25,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:25,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:25,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:25,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-28 03:27:25,723 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:27:25,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:25,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1672162397, now seen corresponding path program 21 times [2024-06-28 03:27:25,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:25,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958458181] [2024-06-28 03:27:25,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:25,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:26,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:26,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958458181] [2024-06-28 03:27:26,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958458181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:26,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:26,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:26,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405544259] [2024-06-28 03:27:26,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:26,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:26,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:26,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:26,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:26,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:27:26,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 727 transitions, 10868 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:26,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:26,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:27:26,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:27,662 INFO L124 PetriNetUnfolderBase]: 1682/2938 cut-off events. [2024-06-28 03:27:27,662 INFO L125 PetriNetUnfolderBase]: For 563264/563264 co-relation queries the response was YES. [2024-06-28 03:27:27,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27758 conditions, 2938 events. 1682/2938 cut-off events. For 563264/563264 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 18437 event pairs, 159 based on Foata normal form. 2/2940 useless extension candidates. Maximal degree in co-relation 27507. Up to 2511 conditions per place. [2024-06-28 03:27:27,716 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 549 selfloop transitions, 94 changer transitions 0/743 dead transitions. [2024-06-28 03:27:27,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 743 transitions, 12226 flow [2024-06-28 03:27:27,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 03:27:27,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-28 03:27:27,717 INFO L175 Difference]: Start difference. First operand has 618 places, 727 transitions, 10868 flow. Second operand 11 states and 139 transitions. [2024-06-28 03:27:27,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 743 transitions, 12226 flow [2024-06-28 03:27:30,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 743 transitions, 11602 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:27:30,946 INFO L231 Difference]: Finished difference. Result has 619 places, 728 transitions, 10478 flow [2024-06-28 03:27:30,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10244, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10478, PETRI_PLACES=619, PETRI_TRANSITIONS=728} [2024-06-28 03:27:30,947 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 587 predicate places. [2024-06-28 03:27:30,947 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 728 transitions, 10478 flow [2024-06-28 03:27:30,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:30,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:30,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:30,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-28 03:27:30,947 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:27:30,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:30,948 INFO L85 PathProgramCache]: Analyzing trace with hash 501009, now seen corresponding path program 43 times [2024-06-28 03:27:30,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:30,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125106038] [2024-06-28 03:27:30,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:30,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:31,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:31,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125106038] [2024-06-28 03:27:31,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125106038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:31,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:31,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:31,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470227562] [2024-06-28 03:27:31,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:31,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:31,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:31,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:31,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:31,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:27:31,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 728 transitions, 10478 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:31,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:31,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:27:31,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:32,757 INFO L124 PetriNetUnfolderBase]: 1757/3019 cut-off events. [2024-06-28 03:27:32,757 INFO L125 PetriNetUnfolderBase]: For 565178/565178 co-relation queries the response was YES. [2024-06-28 03:27:32,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27597 conditions, 3019 events. 1757/3019 cut-off events. For 565178/565178 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 18596 event pairs, 133 based on Foata normal form. 3/3022 useless extension candidates. Maximal degree in co-relation 27347. Up to 1417 conditions per place. [2024-06-28 03:27:32,815 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 446 selfloop transitions, 328 changer transitions 0/776 dead transitions. [2024-06-28 03:27:32,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 776 transitions, 13452 flow [2024-06-28 03:27:32,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:32,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-28 03:27:32,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297520661157025 [2024-06-28 03:27:32,816 INFO L175 Difference]: Start difference. First operand has 619 places, 728 transitions, 10478 flow. Second operand 11 states and 156 transitions. [2024-06-28 03:27:32,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 776 transitions, 13452 flow [2024-06-28 03:27:35,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 620 places, 776 transitions, 13220 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 03:27:35,714 INFO L231 Difference]: Finished difference. Result has 621 places, 731 transitions, 10997 flow [2024-06-28 03:27:35,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10258, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10997, PETRI_PLACES=621, PETRI_TRANSITIONS=731} [2024-06-28 03:27:35,714 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 589 predicate places. [2024-06-28 03:27:35,714 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 731 transitions, 10997 flow [2024-06-28 03:27:35,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:35,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:35,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:35,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2024-06-28 03:27:35,715 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:27:35,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:35,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1672157623, now seen corresponding path program 28 times [2024-06-28 03:27:35,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:35,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539730277] [2024-06-28 03:27:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:35,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:36,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:36,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539730277] [2024-06-28 03:27:36,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539730277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:36,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:36,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:36,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217962966] [2024-06-28 03:27:36,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:36,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:36,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:36,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:36,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:36,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:27:36,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 731 transitions, 10997 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:36,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:36,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:27:36,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:37,771 INFO L124 PetriNetUnfolderBase]: 1763/3029 cut-off events. [2024-06-28 03:27:37,771 INFO L125 PetriNetUnfolderBase]: For 535776/535776 co-relation queries the response was YES. [2024-06-28 03:27:37,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28217 conditions, 3029 events. 1763/3029 cut-off events. For 535776/535776 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 18643 event pairs, 167 based on Foata normal form. 1/3030 useless extension candidates. Maximal degree in co-relation 27966. Up to 2613 conditions per place. [2024-06-28 03:27:37,817 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 569 selfloop transitions, 178 changer transitions 0/749 dead transitions. [2024-06-28 03:27:37,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 749 transitions, 12619 flow [2024-06-28 03:27:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:37,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:27:37,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-28 03:27:37,818 INFO L175 Difference]: Start difference. First operand has 621 places, 731 transitions, 10997 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:27:37,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 749 transitions, 12619 flow [2024-06-28 03:27:40,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 749 transitions, 11962 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 03:27:40,926 INFO L231 Difference]: Finished difference. Result has 622 places, 735 transitions, 10809 flow [2024-06-28 03:27:40,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10340, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10809, PETRI_PLACES=622, PETRI_TRANSITIONS=735} [2024-06-28 03:27:40,926 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 590 predicate places. [2024-06-28 03:27:40,926 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 735 transitions, 10809 flow [2024-06-28 03:27:40,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:40,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:40,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:40,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2024-06-28 03:27:40,926 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:27:40,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:40,927 INFO L85 PathProgramCache]: Analyzing trace with hash -5939427, now seen corresponding path program 29 times [2024-06-28 03:27:40,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:40,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716324647] [2024-06-28 03:27:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:40,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:41,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:41,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716324647] [2024-06-28 03:27:41,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716324647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:41,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:41,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:41,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954372897] [2024-06-28 03:27:41,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:41,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:41,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:41,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:41,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:27:41,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 735 transitions, 10809 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:41,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:41,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:27:41,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:43,072 INFO L124 PetriNetUnfolderBase]: 1766/3034 cut-off events. [2024-06-28 03:27:43,072 INFO L125 PetriNetUnfolderBase]: For 527990/527990 co-relation queries the response was YES. [2024-06-28 03:27:43,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27864 conditions, 3034 events. 1766/3034 cut-off events. For 527990/527990 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 18695 event pairs, 165 based on Foata normal form. 1/3035 useless extension candidates. Maximal degree in co-relation 27614. Up to 2582 conditions per place. [2024-06-28 03:27:43,124 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 548 selfloop transitions, 202 changer transitions 0/752 dead transitions. [2024-06-28 03:27:43,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 752 transitions, 12435 flow [2024-06-28 03:27:43,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:27:43,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:27:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 03:27:43,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-28 03:27:43,124 INFO L175 Difference]: Start difference. First operand has 622 places, 735 transitions, 10809 flow. Second operand 12 states and 145 transitions. [2024-06-28 03:27:43,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 752 transitions, 12435 flow [2024-06-28 03:27:46,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 752 transitions, 12014 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 03:27:46,071 INFO L231 Difference]: Finished difference. Result has 625 places, 737 transitions, 10906 flow [2024-06-28 03:27:46,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10388, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10906, PETRI_PLACES=625, PETRI_TRANSITIONS=737} [2024-06-28 03:27:46,071 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 593 predicate places. [2024-06-28 03:27:46,071 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 737 transitions, 10906 flow [2024-06-28 03:27:46,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:46,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:46,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:46,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2024-06-28 03:27:46,071 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:27:46,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:46,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1665491197, now seen corresponding path program 44 times [2024-06-28 03:27:46,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:46,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412569434] [2024-06-28 03:27:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:46,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:46,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:46,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412569434] [2024-06-28 03:27:46,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412569434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:46,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:46,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:46,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395933633] [2024-06-28 03:27:46,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:46,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:46,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:46,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:46,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:46,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:27:46,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 737 transitions, 10906 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:46,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:46,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:27:46,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:47,871 INFO L124 PetriNetUnfolderBase]: 1760/3025 cut-off events. [2024-06-28 03:27:47,871 INFO L125 PetriNetUnfolderBase]: For 521881/521881 co-relation queries the response was YES. [2024-06-28 03:27:47,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27400 conditions, 3025 events. 1760/3025 cut-off events. For 521881/521881 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 18633 event pairs, 138 based on Foata normal form. 3/3028 useless extension candidates. Maximal degree in co-relation 27149. Up to 1428 conditions per place. [2024-06-28 03:27:47,922 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 415 selfloop transitions, 354 changer transitions 0/771 dead transitions. [2024-06-28 03:27:47,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 771 transitions, 13343 flow [2024-06-28 03:27:47,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:47,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 03:27:47,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597796143250687 [2024-06-28 03:27:47,923 INFO L175 Difference]: Start difference. First operand has 625 places, 737 transitions, 10906 flow. Second operand 11 states and 151 transitions. [2024-06-28 03:27:47,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 771 transitions, 13343 flow [2024-06-28 03:27:50,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 771 transitions, 12825 flow, removed 66 selfloop flow, removed 10 redundant places. [2024-06-28 03:27:50,607 INFO L231 Difference]: Finished difference. Result has 626 places, 737 transitions, 11125 flow [2024-06-28 03:27:50,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10400, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11125, PETRI_PLACES=626, PETRI_TRANSITIONS=737} [2024-06-28 03:27:50,608 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 594 predicate places. [2024-06-28 03:27:50,608 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 737 transitions, 11125 flow [2024-06-28 03:27:50,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:50,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:50,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:50,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2024-06-28 03:27:50,608 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:27:50,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:50,608 INFO L85 PathProgramCache]: Analyzing trace with hash -5934591, now seen corresponding path program 45 times [2024-06-28 03:27:50,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:50,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300206358] [2024-06-28 03:27:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:50,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:51,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:51,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300206358] [2024-06-28 03:27:51,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300206358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:51,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:51,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:51,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636236816] [2024-06-28 03:27:51,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:51,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:51,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:51,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:51,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:51,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:27:51,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 737 transitions, 11125 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:51,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:51,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:27:51,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:52,436 INFO L124 PetriNetUnfolderBase]: 1754/3016 cut-off events. [2024-06-28 03:27:52,436 INFO L125 PetriNetUnfolderBase]: For 473585/473585 co-relation queries the response was YES. [2024-06-28 03:27:52,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27071 conditions, 3016 events. 1754/3016 cut-off events. For 473585/473585 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 18624 event pairs, 122 based on Foata normal form. 3/3019 useless extension candidates. Maximal degree in co-relation 26819. Up to 1424 conditions per place. [2024-06-28 03:27:52,486 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 442 selfloop transitions, 330 changer transitions 0/774 dead transitions. [2024-06-28 03:27:52,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 774 transitions, 13298 flow [2024-06-28 03:27:52,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-28 03:27:52,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 03:27:52,487 INFO L175 Difference]: Start difference. First operand has 626 places, 737 transitions, 11125 flow. Second operand 11 states and 154 transitions. [2024-06-28 03:27:52,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 774 transitions, 13298 flow [2024-06-28 03:27:55,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 774 transitions, 12486 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-06-28 03:27:55,142 INFO L231 Difference]: Finished difference. Result has 624 places, 737 transitions, 10991 flow [2024-06-28 03:27:55,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10317, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10991, PETRI_PLACES=624, PETRI_TRANSITIONS=737} [2024-06-28 03:27:55,142 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 592 predicate places. [2024-06-28 03:27:55,142 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 737 transitions, 10991 flow [2024-06-28 03:27:55,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:55,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:55,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:55,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2024-06-28 03:27:55,142 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:27:55,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:55,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1518794205, now seen corresponding path program 46 times [2024-06-28 03:27:55,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:55,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655307357] [2024-06-28 03:27:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:55,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:55,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:55,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655307357] [2024-06-28 03:27:55,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655307357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:55,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:55,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:55,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115166720] [2024-06-28 03:27:55,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:55,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:55,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:55,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:27:55,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 737 transitions, 10991 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:55,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:55,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:27:55,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:57,030 INFO L124 PetriNetUnfolderBase]: 1808/3103 cut-off events. [2024-06-28 03:27:57,030 INFO L125 PetriNetUnfolderBase]: For 575992/575992 co-relation queries the response was YES. [2024-06-28 03:27:57,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29093 conditions, 3103 events. 1808/3103 cut-off events. For 575992/575992 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 19181 event pairs, 152 based on Foata normal form. 3/3106 useless extension candidates. Maximal degree in co-relation 28842. Up to 1468 conditions per place. [2024-06-28 03:27:57,083 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 453 selfloop transitions, 333 changer transitions 0/788 dead transitions. [2024-06-28 03:27:57,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 788 transitions, 14466 flow [2024-06-28 03:27:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:57,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-28 03:27:57,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42699724517906334 [2024-06-28 03:27:57,084 INFO L175 Difference]: Start difference. First operand has 624 places, 737 transitions, 10991 flow. Second operand 11 states and 155 transitions. [2024-06-28 03:27:57,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 788 transitions, 14466 flow [2024-06-28 03:28:00,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 788 transitions, 13698 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-28 03:28:00,279 INFO L231 Difference]: Finished difference. Result has 622 places, 749 transitions, 11229 flow [2024-06-28 03:28:00,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10263, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11229, PETRI_PLACES=622, PETRI_TRANSITIONS=749} [2024-06-28 03:28:00,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 590 predicate places. [2024-06-28 03:28:00,280 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 749 transitions, 11229 flow [2024-06-28 03:28:00,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:00,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:00,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:00,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2024-06-28 03:28:00,281 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:00,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1510519995, now seen corresponding path program 47 times [2024-06-28 03:28:00,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:00,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888930947] [2024-06-28 03:28:00,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:00,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:01,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:01,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888930947] [2024-06-28 03:28:01,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888930947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:01,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:01,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:01,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629558900] [2024-06-28 03:28:01,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:01,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:01,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:01,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:01,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:01,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:28:01,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 749 transitions, 11229 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:01,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:01,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:28:01,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:02,112 INFO L124 PetriNetUnfolderBase]: 1817/3118 cut-off events. [2024-06-28 03:28:02,112 INFO L125 PetriNetUnfolderBase]: For 568651/568651 co-relation queries the response was YES. [2024-06-28 03:28:02,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29126 conditions, 3118 events. 1817/3118 cut-off events. For 568651/568651 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 19279 event pairs, 163 based on Foata normal form. 3/3121 useless extension candidates. Maximal degree in co-relation 28876. Up to 1476 conditions per place. [2024-06-28 03:28:02,167 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 401 selfloop transitions, 379 changer transitions 0/782 dead transitions. [2024-06-28 03:28:02,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 782 transitions, 13730 flow [2024-06-28 03:28:02,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:02,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-28 03:28:02,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41046831955922863 [2024-06-28 03:28:02,168 INFO L175 Difference]: Start difference. First operand has 622 places, 749 transitions, 11229 flow. Second operand 11 states and 149 transitions. [2024-06-28 03:28:02,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 782 transitions, 13730 flow [2024-06-28 03:28:05,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 782 transitions, 13312 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:05,178 INFO L231 Difference]: Finished difference. Result has 627 places, 752 transitions, 11663 flow [2024-06-28 03:28:05,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10822, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=376, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11663, PETRI_PLACES=627, PETRI_TRANSITIONS=752} [2024-06-28 03:28:05,178 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 595 predicate places. [2024-06-28 03:28:05,178 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 752 transitions, 11663 flow [2024-06-28 03:28:05,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:05,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:05,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:05,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2024-06-28 03:28:05,178 INFO L420 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:05,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:05,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1712022237, now seen corresponding path program 48 times [2024-06-28 03:28:05,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:05,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53399352] [2024-06-28 03:28:05,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:05,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:05,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:05,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53399352] [2024-06-28 03:28:05,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53399352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:05,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:05,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:05,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630168259] [2024-06-28 03:28:05,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:05,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:05,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:05,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:05,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:06,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:28:06,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 752 transitions, 11663 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:06,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:06,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:28:06,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:07,116 INFO L124 PetriNetUnfolderBase]: 1841/3155 cut-off events. [2024-06-28 03:28:07,116 INFO L125 PetriNetUnfolderBase]: For 608242/608242 co-relation queries the response was YES. [2024-06-28 03:28:07,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30043 conditions, 3155 events. 1841/3155 cut-off events. For 608242/608242 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 19519 event pairs, 506 based on Foata normal form. 3/3158 useless extension candidates. Maximal degree in co-relation 29793. Up to 2303 conditions per place. [2024-06-28 03:28:07,173 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 645 selfloop transitions, 142 changer transitions 0/789 dead transitions. [2024-06-28 03:28:07,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 789 transitions, 14570 flow [2024-06-28 03:28:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:28:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:28:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-28 03:28:07,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-28 03:28:07,174 INFO L175 Difference]: Start difference. First operand has 627 places, 752 transitions, 11663 flow. Second operand 12 states and 160 transitions. [2024-06-28 03:28:07,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 789 transitions, 14570 flow [2024-06-28 03:28:10,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 789 transitions, 13984 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 03:28:10,353 INFO L231 Difference]: Finished difference. Result has 630 places, 758 transitions, 11528 flow [2024-06-28 03:28:10,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11097, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11528, PETRI_PLACES=630, PETRI_TRANSITIONS=758} [2024-06-28 03:28:10,354 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 598 predicate places. [2024-06-28 03:28:10,354 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 758 transitions, 11528 flow [2024-06-28 03:28:10,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:10,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:10,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:10,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2024-06-28 03:28:10,354 INFO L420 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:10,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:10,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1518563565, now seen corresponding path program 49 times [2024-06-28 03:28:10,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:10,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481844051] [2024-06-28 03:28:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:10,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:11,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:11,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481844051] [2024-06-28 03:28:11,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481844051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:11,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:11,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:11,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472632911] [2024-06-28 03:28:11,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:11,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:11,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:11,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:11,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:11,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:28:11,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 758 transitions, 11528 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:11,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:11,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:28:11,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:12,199 INFO L124 PetriNetUnfolderBase]: 1835/3148 cut-off events. [2024-06-28 03:28:12,199 INFO L125 PetriNetUnfolderBase]: For 572730/572730 co-relation queries the response was YES. [2024-06-28 03:28:12,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28992 conditions, 3148 events. 1835/3148 cut-off events. For 572730/572730 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 19518 event pairs, 156 based on Foata normal form. 3/3151 useless extension candidates. Maximal degree in co-relation 28742. Up to 1492 conditions per place. [2024-06-28 03:28:12,255 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 460 selfloop transitions, 338 changer transitions 0/800 dead transitions. [2024-06-28 03:28:12,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 800 transitions, 14470 flow [2024-06-28 03:28:12,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-28 03:28:12,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42699724517906334 [2024-06-28 03:28:12,256 INFO L175 Difference]: Start difference. First operand has 630 places, 758 transitions, 11528 flow. Second operand 11 states and 155 transitions. [2024-06-28 03:28:12,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 640 places, 800 transitions, 14470 flow [2024-06-28 03:28:15,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 800 transitions, 14218 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 03:28:15,383 INFO L231 Difference]: Finished difference. Result has 636 places, 758 transitions, 11964 flow [2024-06-28 03:28:15,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11276, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11964, PETRI_PLACES=636, PETRI_TRANSITIONS=758} [2024-06-28 03:28:15,383 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 604 predicate places. [2024-06-28 03:28:15,383 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 758 transitions, 11964 flow [2024-06-28 03:28:15,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:15,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:15,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:15,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2024-06-28 03:28:15,384 INFO L420 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:15,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:15,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1518800901, now seen corresponding path program 30 times [2024-06-28 03:28:15,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:15,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174605815] [2024-06-28 03:28:15,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:15,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:16,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174605815] [2024-06-28 03:28:16,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174605815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:16,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:16,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:16,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545198544] [2024-06-28 03:28:16,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:16,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:16,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:16,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:16,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:28:16,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 758 transitions, 11964 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:16,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:16,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:28:16,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:17,377 INFO L124 PetriNetUnfolderBase]: 1838/3153 cut-off events. [2024-06-28 03:28:17,377 INFO L125 PetriNetUnfolderBase]: For 559395/559395 co-relation queries the response was YES. [2024-06-28 03:28:17,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29582 conditions, 3153 events. 1838/3153 cut-off events. For 559395/559395 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 19509 event pairs, 183 based on Foata normal form. 1/3154 useless extension candidates. Maximal degree in co-relation 29331. Up to 2740 conditions per place. [2024-06-28 03:28:17,433 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 584 selfloop transitions, 186 changer transitions 0/772 dead transitions. [2024-06-28 03:28:17,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 772 transitions, 13614 flow [2024-06-28 03:28:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:28:17,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:28:17,434 INFO L175 Difference]: Start difference. First operand has 636 places, 758 transitions, 11964 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:28:17,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 772 transitions, 13614 flow [2024-06-28 03:28:20,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 772 transitions, 12907 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:28:20,674 INFO L231 Difference]: Finished difference. Result has 636 places, 760 transitions, 11723 flow [2024-06-28 03:28:20,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11257, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11723, PETRI_PLACES=636, PETRI_TRANSITIONS=760} [2024-06-28 03:28:20,674 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 604 predicate places. [2024-06-28 03:28:20,675 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 760 transitions, 11723 flow [2024-06-28 03:28:20,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:20,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:20,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:20,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2024-06-28 03:28:20,675 INFO L420 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:20,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:20,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1518800715, now seen corresponding path program 50 times [2024-06-28 03:28:20,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:20,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381822606] [2024-06-28 03:28:20,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:20,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:21,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381822606] [2024-06-28 03:28:21,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381822606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:21,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:21,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:21,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418937747] [2024-06-28 03:28:21,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:21,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:21,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:21,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:21,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:21,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:28:21,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 760 transitions, 11723 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:21,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:21,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:28:21,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:22,514 INFO L124 PetriNetUnfolderBase]: 1832/3144 cut-off events. [2024-06-28 03:28:22,514 INFO L125 PetriNetUnfolderBase]: For 544453/544453 co-relation queries the response was YES. [2024-06-28 03:28:22,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28619 conditions, 3144 events. 1832/3144 cut-off events. For 544453/544453 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 19509 event pairs, 153 based on Foata normal form. 3/3147 useless extension candidates. Maximal degree in co-relation 28368. Up to 1493 conditions per place. [2024-06-28 03:28:22,571 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 441 selfloop transitions, 350 changer transitions 0/793 dead transitions. [2024-06-28 03:28:22,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 793 transitions, 14209 flow [2024-06-28 03:28:22,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-28 03:28:22,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-28 03:28:22,571 INFO L175 Difference]: Start difference. First operand has 636 places, 760 transitions, 11723 flow. Second operand 11 states and 152 transitions. [2024-06-28 03:28:22,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 793 transitions, 14209 flow [2024-06-28 03:28:25,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 793 transitions, 13735 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-28 03:28:25,530 INFO L231 Difference]: Finished difference. Result has 638 places, 760 transitions, 11963 flow [2024-06-28 03:28:25,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11253, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11963, PETRI_PLACES=638, PETRI_TRANSITIONS=760} [2024-06-28 03:28:25,530 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 606 predicate places. [2024-06-28 03:28:25,530 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 760 transitions, 11963 flow [2024-06-28 03:28:25,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:25,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:25,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:25,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2024-06-28 03:28:25,531 INFO L420 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:25,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:25,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1740445755, now seen corresponding path program 51 times [2024-06-28 03:28:25,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:25,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962387313] [2024-06-28 03:28:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:25,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:26,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:26,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:26,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962387313] [2024-06-28 03:28:26,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962387313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:26,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:26,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:26,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729431275] [2024-06-28 03:28:26,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:26,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:26,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:26,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:26,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:26,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:28:26,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 760 transitions, 11963 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:26,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:26,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:28:26,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:27,354 INFO L124 PetriNetUnfolderBase]: 1841/3159 cut-off events. [2024-06-28 03:28:27,354 INFO L125 PetriNetUnfolderBase]: For 547118/547118 co-relation queries the response was YES. [2024-06-28 03:28:27,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29115 conditions, 3159 events. 1841/3159 cut-off events. For 547118/547118 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 19575 event pairs, 157 based on Foata normal form. 3/3162 useless extension candidates. Maximal degree in co-relation 28863. Up to 1501 conditions per place. [2024-06-28 03:28:27,411 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 483 selfloop transitions, 323 changer transitions 0/808 dead transitions. [2024-06-28 03:28:27,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 808 transitions, 15043 flow [2024-06-28 03:28:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 03:28:27,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380165289256198 [2024-06-28 03:28:27,412 INFO L175 Difference]: Start difference. First operand has 638 places, 760 transitions, 11963 flow. Second operand 11 states and 159 transitions. [2024-06-28 03:28:27,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 808 transitions, 15043 flow [2024-06-28 03:28:30,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 808 transitions, 14308 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 03:28:30,490 INFO L231 Difference]: Finished difference. Result has 637 places, 763 transitions, 11969 flow [2024-06-28 03:28:30,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11240, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11969, PETRI_PLACES=637, PETRI_TRANSITIONS=763} [2024-06-28 03:28:30,491 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 605 predicate places. [2024-06-28 03:28:30,491 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 763 transitions, 11969 flow [2024-06-28 03:28:30,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:30,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:30,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:30,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2024-06-28 03:28:30,491 INFO L420 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:30,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:30,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1510212165, now seen corresponding path program 2 times [2024-06-28 03:28:30,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:30,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046343081] [2024-06-28 03:28:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:30,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:31,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:31,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046343081] [2024-06-28 03:28:31,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046343081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:31,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:31,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:31,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910904258] [2024-06-28 03:28:31,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:31,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:31,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:31,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:31,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:31,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:28:31,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 763 transitions, 11969 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:31,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:31,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:28:31,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:32,609 INFO L124 PetriNetUnfolderBase]: 1743/3036 cut-off events. [2024-06-28 03:28:32,609 INFO L125 PetriNetUnfolderBase]: For 543742/543767 co-relation queries the response was YES. [2024-06-28 03:28:32,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28467 conditions, 3036 events. 1743/3036 cut-off events. For 543742/543767 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 19248 event pairs, 302 based on Foata normal form. 3/3012 useless extension candidates. Maximal degree in co-relation 28216. Up to 2810 conditions per place. [2024-06-28 03:28:32,668 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 682 selfloop transitions, 43 changer transitions 0/779 dead transitions. [2024-06-28 03:28:32,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 779 transitions, 13486 flow [2024-06-28 03:28:32,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:28:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:28:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 03:28:32,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-28 03:28:32,669 INFO L175 Difference]: Start difference. First operand has 637 places, 763 transitions, 11969 flow. Second operand 10 states and 128 transitions. [2024-06-28 03:28:32,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 779 transitions, 13486 flow [2024-06-28 03:28:36,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 779 transitions, 12612 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:28:36,083 INFO L231 Difference]: Finished difference. Result has 638 places, 765 transitions, 11228 flow [2024-06-28 03:28:36,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11095, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11228, PETRI_PLACES=638, PETRI_TRANSITIONS=765} [2024-06-28 03:28:36,083 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 606 predicate places. [2024-06-28 03:28:36,083 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 765 transitions, 11228 flow [2024-06-28 03:28:36,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:36,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:36,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:36,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2024-06-28 03:28:36,083 INFO L420 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:36,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:36,084 INFO L85 PathProgramCache]: Analyzing trace with hash 881864645, now seen corresponding path program 22 times [2024-06-28 03:28:36,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:36,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125826425] [2024-06-28 03:28:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:36,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:36,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:36,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125826425] [2024-06-28 03:28:36,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125826425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:36,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:36,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:36,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523809542] [2024-06-28 03:28:36,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:36,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:36,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:36,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:37,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:28:37,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 765 transitions, 11228 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:37,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:37,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:28:37,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:38,110 INFO L124 PetriNetUnfolderBase]: 1780/3106 cut-off events. [2024-06-28 03:28:38,110 INFO L125 PetriNetUnfolderBase]: For 531010/531010 co-relation queries the response was YES. [2024-06-28 03:28:38,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28070 conditions, 3106 events. 1780/3106 cut-off events. For 531010/531010 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 19647 event pairs, 174 based on Foata normal form. 2/3108 useless extension candidates. Maximal degree in co-relation 27818. Up to 2680 conditions per place. [2024-06-28 03:28:38,161 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 588 selfloop transitions, 87 changer transitions 0/779 dead transitions. [2024-06-28 03:28:38,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 779 transitions, 12642 flow [2024-06-28 03:28:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:38,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:38,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:28:38,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-28 03:28:38,162 INFO L175 Difference]: Start difference. First operand has 638 places, 765 transitions, 11228 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:28:38,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 779 transitions, 12642 flow [2024-06-28 03:28:41,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 779 transitions, 12554 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:41,398 INFO L231 Difference]: Finished difference. Result has 643 places, 766 transitions, 11356 flow [2024-06-28 03:28:41,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11140, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11356, PETRI_PLACES=643, PETRI_TRANSITIONS=766} [2024-06-28 03:28:41,398 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 611 predicate places. [2024-06-28 03:28:41,398 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 766 transitions, 11356 flow [2024-06-28 03:28:41,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:41,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:41,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:41,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2024-06-28 03:28:41,398 INFO L420 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:41,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:41,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1740208605, now seen corresponding path program 52 times [2024-06-28 03:28:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:41,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245383617] [2024-06-28 03:28:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:41,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:42,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:42,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245383617] [2024-06-28 03:28:42,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245383617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:42,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:42,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:42,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404253498] [2024-06-28 03:28:42,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:42,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:42,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:42,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:42,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:42,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:28:42,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 766 transitions, 11356 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:42,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:42,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:28:42,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:43,320 INFO L124 PetriNetUnfolderBase]: 1858/3190 cut-off events. [2024-06-28 03:28:43,320 INFO L125 PetriNetUnfolderBase]: For 541360/541360 co-relation queries the response was YES. [2024-06-28 03:28:43,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28617 conditions, 3190 events. 1858/3190 cut-off events. For 541360/541360 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 19834 event pairs, 158 based on Foata normal form. 3/3193 useless extension candidates. Maximal degree in co-relation 28364. Up to 1525 conditions per place. [2024-06-28 03:28:43,374 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 479 selfloop transitions, 328 changer transitions 0/809 dead transitions. [2024-06-28 03:28:43,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 809 transitions, 14066 flow [2024-06-28 03:28:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-28 03:28:43,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42699724517906334 [2024-06-28 03:28:43,375 INFO L175 Difference]: Start difference. First operand has 643 places, 766 transitions, 11356 flow. Second operand 11 states and 155 transitions. [2024-06-28 03:28:43,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 809 transitions, 14066 flow [2024-06-28 03:28:46,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 809 transitions, 13858 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 03:28:46,509 INFO L231 Difference]: Finished difference. Result has 645 places, 769 transitions, 11891 flow [2024-06-28 03:28:46,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11152, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11891, PETRI_PLACES=645, PETRI_TRANSITIONS=769} [2024-06-28 03:28:46,510 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 613 predicate places. [2024-06-28 03:28:46,510 INFO L495 AbstractCegarLoop]: Abstraction has has 645 places, 769 transitions, 11891 flow [2024-06-28 03:28:46,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:46,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:46,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:46,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2024-06-28 03:28:46,510 INFO L420 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:46,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1740439245, now seen corresponding path program 53 times [2024-06-28 03:28:46,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:46,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504148660] [2024-06-28 03:28:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:46,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:47,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:47,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504148660] [2024-06-28 03:28:47,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504148660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:47,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:47,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:47,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10833927] [2024-06-28 03:28:47,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:47,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:47,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:47,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:47,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:47,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:28:47,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 769 transitions, 11891 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:47,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:47,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:28:47,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:48,450 INFO L124 PetriNetUnfolderBase]: 1852/3181 cut-off events. [2024-06-28 03:28:48,450 INFO L125 PetriNetUnfolderBase]: For 508784/508784 co-relation queries the response was YES. [2024-06-28 03:28:48,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28663 conditions, 3181 events. 1852/3181 cut-off events. For 508784/508784 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 19762 event pairs, 153 based on Foata normal form. 3/3184 useless extension candidates. Maximal degree in co-relation 28409. Up to 1521 conditions per place. [2024-06-28 03:28:48,505 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 492 selfloop transitions, 322 changer transitions 0/816 dead transitions. [2024-06-28 03:28:48,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 816 transitions, 14648 flow [2024-06-28 03:28:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:48,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:48,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 03:28:48,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380165289256198 [2024-06-28 03:28:48,506 INFO L175 Difference]: Start difference. First operand has 645 places, 769 transitions, 11891 flow. Second operand 11 states and 159 transitions. [2024-06-28 03:28:48,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 816 transitions, 14648 flow [2024-06-28 03:28:51,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 816 transitions, 13741 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-28 03:28:51,800 INFO L231 Difference]: Finished difference. Result has 646 places, 769 transitions, 11644 flow [2024-06-28 03:28:51,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10988, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11644, PETRI_PLACES=646, PETRI_TRANSITIONS=769} [2024-06-28 03:28:51,800 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 614 predicate places. [2024-06-28 03:28:51,800 INFO L495 AbstractCegarLoop]: Abstraction has has 646 places, 769 transitions, 11644 flow [2024-06-28 03:28:51,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:51,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:51,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:51,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2024-06-28 03:28:51,800 INFO L420 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:51,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:51,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1740445941, now seen corresponding path program 31 times [2024-06-28 03:28:51,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:51,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505751398] [2024-06-28 03:28:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:51,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:52,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:52,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505751398] [2024-06-28 03:28:52,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505751398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:52,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:52,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:52,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062778674] [2024-06-28 03:28:52,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:52,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:52,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:52,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:52,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:52,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:28:52,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 769 transitions, 11644 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:52,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:52,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:28:52,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:53,838 INFO L124 PetriNetUnfolderBase]: 1855/3186 cut-off events. [2024-06-28 03:28:53,838 INFO L125 PetriNetUnfolderBase]: For 483294/483294 co-relation queries the response was YES. [2024-06-28 03:28:53,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28601 conditions, 3186 events. 1855/3186 cut-off events. For 483294/483294 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 19814 event pairs, 180 based on Foata normal form. 1/3187 useless extension candidates. Maximal degree in co-relation 28347. Up to 2773 conditions per place. [2024-06-28 03:28:53,894 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 617 selfloop transitions, 164 changer transitions 0/783 dead transitions. [2024-06-28 03:28:53,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 783 transitions, 13316 flow [2024-06-28 03:28:53,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:28:53,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-28 03:28:53,895 INFO L175 Difference]: Start difference. First operand has 646 places, 769 transitions, 11644 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:28:53,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 783 transitions, 13316 flow [2024-06-28 03:28:57,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 783 transitions, 12600 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 03:28:57,029 INFO L231 Difference]: Finished difference. Result has 645 places, 771 transitions, 11350 flow [2024-06-28 03:28:57,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10928, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11350, PETRI_PLACES=645, PETRI_TRANSITIONS=771} [2024-06-28 03:28:57,029 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 613 predicate places. [2024-06-28 03:28:57,029 INFO L495 AbstractCegarLoop]: Abstraction has has 645 places, 771 transitions, 11350 flow [2024-06-28 03:28:57,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:57,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:57,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:57,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2024-06-28 03:28:57,030 INFO L420 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:57,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:57,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1746701865, now seen corresponding path program 54 times [2024-06-28 03:28:57,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:57,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817159142] [2024-06-28 03:28:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:57,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:57,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:57,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817159142] [2024-06-28 03:28:57,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817159142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:57,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:57,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:57,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964719509] [2024-06-28 03:28:57,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:57,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:57,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:57,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:57,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:57,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:28:57,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 771 transitions, 11350 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:57,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:57,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:28:57,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:58,866 INFO L124 PetriNetUnfolderBase]: 1864/3201 cut-off events. [2024-06-28 03:28:58,866 INFO L125 PetriNetUnfolderBase]: For 504819/504819 co-relation queries the response was YES. [2024-06-28 03:28:58,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28256 conditions, 3201 events. 1864/3201 cut-off events. For 504819/504819 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 19903 event pairs, 145 based on Foata normal form. 3/3204 useless extension candidates. Maximal degree in co-relation 28002. Up to 1534 conditions per place. [2024-06-28 03:28:58,923 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 476 selfloop transitions, 335 changer transitions 0/813 dead transitions. [2024-06-28 03:28:58,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 813 transitions, 14030 flow [2024-06-28 03:28:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:58,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-28 03:28:58,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325068870523416 [2024-06-28 03:28:58,924 INFO L175 Difference]: Start difference. First operand has 645 places, 771 transitions, 11350 flow. Second operand 11 states and 157 transitions. [2024-06-28 03:28:58,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 813 transitions, 14030 flow [2024-06-28 03:29:02,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 813 transitions, 13625 flow, removed 40 selfloop flow, removed 10 redundant places. [2024-06-28 03:29:02,348 INFO L231 Difference]: Finished difference. Result has 646 places, 774 transitions, 11696 flow [2024-06-28 03:29:02,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10949, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11696, PETRI_PLACES=646, PETRI_TRANSITIONS=774} [2024-06-28 03:29:02,349 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 614 predicate places. [2024-06-28 03:29:02,349 INFO L495 AbstractCegarLoop]: Abstraction has has 646 places, 774 transitions, 11696 flow [2024-06-28 03:29:02,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:02,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:02,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:02,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2024-06-28 03:29:02,349 INFO L420 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:02,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1746702051, now seen corresponding path program 32 times [2024-06-28 03:29:02,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:02,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488960980] [2024-06-28 03:29:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:02,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:03,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:03,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488960980] [2024-06-28 03:29:03,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488960980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:03,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:03,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:29:03,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935574384] [2024-06-28 03:29:03,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:03,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:29:03,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:03,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:29:03,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:29:03,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:29:03,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 774 transitions, 11696 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:03,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:03,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:29:03,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:04,372 INFO L124 PetriNetUnfolderBase]: 1867/3206 cut-off events. [2024-06-28 03:29:04,373 INFO L125 PetriNetUnfolderBase]: For 483747/483747 co-relation queries the response was YES. [2024-06-28 03:29:04,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28780 conditions, 3206 events. 1867/3206 cut-off events. For 483747/483747 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 19949 event pairs, 178 based on Foata normal form. 1/3207 useless extension candidates. Maximal degree in co-relation 28526. Up to 2793 conditions per place. [2024-06-28 03:29:04,430 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 620 selfloop transitions, 166 changer transitions 0/788 dead transitions. [2024-06-28 03:29:04,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 788 transitions, 13382 flow [2024-06-28 03:29:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:29:04,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:29:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:29:04,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691460055096419 [2024-06-28 03:29:04,431 INFO L175 Difference]: Start difference. First operand has 646 places, 774 transitions, 11696 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:29:04,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 788 transitions, 13382 flow [2024-06-28 03:29:07,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 788 transitions, 12704 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:29:07,484 INFO L231 Difference]: Finished difference. Result has 648 places, 776 transitions, 11448 flow [2024-06-28 03:29:07,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11018, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11448, PETRI_PLACES=648, PETRI_TRANSITIONS=776} [2024-06-28 03:29:07,485 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 616 predicate places. [2024-06-28 03:29:07,485 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 776 transitions, 11448 flow [2024-06-28 03:29:07,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:07,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:07,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:07,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2024-06-28 03:29:07,485 INFO L420 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:07,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:07,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1746879681, now seen corresponding path program 33 times [2024-06-28 03:29:07,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:07,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866717330] [2024-06-28 03:29:07,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:07,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:08,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:08,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866717330] [2024-06-28 03:29:08,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866717330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:08,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:08,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:29:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973483400] [2024-06-28 03:29:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:08,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:29:08,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:08,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:29:08,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:29:08,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:29:08,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 776 transitions, 11448 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:08,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:08,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:29:08,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:09,544 INFO L124 PetriNetUnfolderBase]: 1870/3211 cut-off events. [2024-06-28 03:29:09,544 INFO L125 PetriNetUnfolderBase]: For 481802/481802 co-relation queries the response was YES. [2024-06-28 03:29:09,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28391 conditions, 3211 events. 1870/3211 cut-off events. For 481802/481802 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 19996 event pairs, 180 based on Foata normal form. 1/3212 useless extension candidates. Maximal degree in co-relation 28137. Up to 2770 conditions per place. [2024-06-28 03:29:09,601 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 603 selfloop transitions, 186 changer transitions 0/791 dead transitions. [2024-06-28 03:29:09,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 791 transitions, 13146 flow [2024-06-28 03:29:09,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:29:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:29:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 03:29:09,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 03:29:09,601 INFO L175 Difference]: Start difference. First operand has 648 places, 776 transitions, 11448 flow. Second operand 12 states and 143 transitions. [2024-06-28 03:29:09,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 791 transitions, 13146 flow [2024-06-28 03:29:13,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 791 transitions, 12736 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 03:29:13,102 INFO L231 Difference]: Finished difference. Result has 651 places, 778 transitions, 11514 flow [2024-06-28 03:29:13,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11042, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11514, PETRI_PLACES=651, PETRI_TRANSITIONS=778} [2024-06-28 03:29:13,102 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 619 predicate places. [2024-06-28 03:29:13,102 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 778 transitions, 11514 flow [2024-06-28 03:29:13,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:13,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:13,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:13,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2024-06-28 03:29:13,103 INFO L420 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:13,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:13,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1746874845, now seen corresponding path program 55 times [2024-06-28 03:29:13,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:13,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277049315] [2024-06-28 03:29:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:13,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:13,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:13,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277049315] [2024-06-28 03:29:13,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277049315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:13,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:13,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:29:13,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977260719] [2024-06-28 03:29:13,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:13,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:29:13,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:13,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:29:13,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:29:13,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:29:13,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 778 transitions, 11514 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:13,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:13,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:29:13,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:14,965 INFO L124 PetriNetUnfolderBase]: 1864/3202 cut-off events. [2024-06-28 03:29:14,965 INFO L125 PetriNetUnfolderBase]: For 469261/469261 co-relation queries the response was YES. [2024-06-28 03:29:15,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27840 conditions, 3202 events. 1864/3202 cut-off events. For 469261/469261 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 19955 event pairs, 135 based on Foata normal form. 3/3205 useless extension candidates. Maximal degree in co-relation 27585. Up to 1540 conditions per place. [2024-06-28 03:29:15,024 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 448 selfloop transitions, 359 changer transitions 0/809 dead transitions. [2024-06-28 03:29:15,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 809 transitions, 13705 flow [2024-06-28 03:29:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:29:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:29:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-28 03:29:15,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-28 03:29:15,025 INFO L175 Difference]: Start difference. First operand has 651 places, 778 transitions, 11514 flow. Second operand 11 states and 152 transitions. [2024-06-28 03:29:15,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 809 transitions, 13705 flow [2024-06-28 03:29:17,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 809 transitions, 13220 flow, removed 57 selfloop flow, removed 12 redundant places. [2024-06-28 03:29:17,974 INFO L231 Difference]: Finished difference. Result has 650 places, 778 transitions, 11759 flow [2024-06-28 03:29:17,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11031, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11759, PETRI_PLACES=650, PETRI_TRANSITIONS=778} [2024-06-28 03:29:17,975 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 618 predicate places. [2024-06-28 03:29:17,975 INFO L495 AbstractCegarLoop]: Abstraction has has 650 places, 778 transitions, 11759 flow [2024-06-28 03:29:17,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:17,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:17,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:17,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2024-06-28 03:29:17,975 INFO L420 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:17,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:17,976 INFO L85 PathProgramCache]: Analyzing trace with hash 994000961, now seen corresponding path program 56 times [2024-06-28 03:29:17,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:17,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857826299] [2024-06-28 03:29:17,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:17,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:18,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857826299] [2024-06-28 03:29:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857826299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:18,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:18,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:29:18,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379588931] [2024-06-28 03:29:18,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:18,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:29:18,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:18,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:29:18,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:29:18,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:29:18,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 778 transitions, 11759 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:18,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:18,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:29:18,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:19,965 INFO L124 PetriNetUnfolderBase]: 1903/3263 cut-off events. [2024-06-28 03:29:19,965 INFO L125 PetriNetUnfolderBase]: For 543132/543132 co-relation queries the response was YES. [2024-06-28 03:29:20,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29743 conditions, 3263 events. 1903/3263 cut-off events. For 543132/543132 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 20356 event pairs, 513 based on Foata normal form. 3/3266 useless extension candidates. Maximal degree in co-relation 29489. Up to 3068 conditions per place. [2024-06-28 03:29:20,019 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 774 selfloop transitions, 39 changer transitions 0/815 dead transitions. [2024-06-28 03:29:20,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 815 transitions, 14502 flow [2024-06-28 03:29:20,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:29:20,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:29:20,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:29:20,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-28 03:29:20,020 INFO L175 Difference]: Start difference. First operand has 650 places, 778 transitions, 11759 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:29:20,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 815 transitions, 14502 flow [2024-06-28 03:29:23,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 815 transitions, 13742 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:29:23,251 INFO L231 Difference]: Finished difference. Result has 650 places, 787 transitions, 11337 flow [2024-06-28 03:29:23,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11021, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=745, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11337, PETRI_PLACES=650, PETRI_TRANSITIONS=787} [2024-06-28 03:29:23,252 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 618 predicate places. [2024-06-28 03:29:23,252 INFO L495 AbstractCegarLoop]: Abstraction has has 650 places, 787 transitions, 11337 flow [2024-06-28 03:29:23,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:23,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:23,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:23,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2024-06-28 03:29:23,252 INFO L420 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:23,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1524287041, now seen corresponding path program 3 times [2024-06-28 03:29:23,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:23,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732422440] [2024-06-28 03:29:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:23,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:24,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:24,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732422440] [2024-06-28 03:29:24,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732422440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:24,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:24,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:29:24,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96663554] [2024-06-28 03:29:24,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:24,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:29:24,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:24,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:29:24,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:29:24,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 03:29:24,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 787 transitions, 11337 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:24,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:24,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 03:29:24,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:25,657 INFO L124 PetriNetUnfolderBase]: 1805/3137 cut-off events. [2024-06-28 03:29:25,657 INFO L125 PetriNetUnfolderBase]: For 544507/544537 co-relation queries the response was YES. [2024-06-28 03:29:25,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28289 conditions, 3137 events. 1805/3137 cut-off events. For 544507/544537 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 20020 event pairs, 463 based on Foata normal form. 4/3106 useless extension candidates. Maximal degree in co-relation 28035. Up to 2969 conditions per place. [2024-06-28 03:29:25,713 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 725 selfloop transitions, 23 changer transitions 0/802 dead transitions. [2024-06-28 03:29:25,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 802 transitions, 12915 flow [2024-06-28 03:29:25,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:25,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:29:25,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-28 03:29:25,714 INFO L175 Difference]: Start difference. First operand has 650 places, 787 transitions, 11337 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:29:25,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 802 transitions, 12915 flow [2024-06-28 03:29:29,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 802 transitions, 12842 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:29,261 INFO L231 Difference]: Finished difference. Result has 655 places, 789 transitions, 11354 flow [2024-06-28 03:29:29,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11264, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=764, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11354, PETRI_PLACES=655, PETRI_TRANSITIONS=789} [2024-06-28 03:29:29,261 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 623 predicate places. [2024-06-28 03:29:29,261 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 789 transitions, 11354 flow [2024-06-28 03:29:29,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:29,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:29,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:29,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2024-06-28 03:29:29,261 INFO L420 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:29,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:29,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1882099781, now seen corresponding path program 57 times [2024-06-28 03:29:29,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:29,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324030321] [2024-06-28 03:29:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:29,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:29,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:29,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324030321] [2024-06-28 03:29:29,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324030321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:29,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:29,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:29:29,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737279324] [2024-06-28 03:29:29,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:29,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:29:29,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:29,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:29:29,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:29:30,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-28 03:29:30,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 789 transitions, 11354 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:30,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:30,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-28 03:29:30,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:31,236 INFO L124 PetriNetUnfolderBase]: 1946/3334 cut-off events. [2024-06-28 03:29:31,237 INFO L125 PetriNetUnfolderBase]: For 621012/621012 co-relation queries the response was YES. [2024-06-28 03:29:31,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30492 conditions, 3334 events. 1946/3334 cut-off events. For 621012/621012 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 20884 event pairs, 509 based on Foata normal form. 3/3337 useless extension candidates. Maximal degree in co-relation 30235. Up to 2904 conditions per place. [2024-06-28 03:29:31,296 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 762 selfloop transitions, 69 changer transitions 0/833 dead transitions. [2024-06-28 03:29:31,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 833 transitions, 14842 flow [2024-06-28 03:29:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:29:31,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:29:31,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 03:29:31,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-28 03:29:31,297 INFO L175 Difference]: Start difference. First operand has 655 places, 789 transitions, 11354 flow. Second operand 11 states and 148 transitions. [2024-06-28 03:29:31,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 833 transitions, 14842 flow Killed by 15