./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.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/mix009.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mix009.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.opt.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-eb4cb34-m [2024-06-21 20:37:02,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 20:37:02,405 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 20:37:02,410 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 20:37:02,410 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 20:37:02,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 20:37:02,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 20:37:02,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 20:37:02,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 20:37:02,437 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 20:37:02,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 20:37:02,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 20:37:02,438 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 20:37:02,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 20:37:02,439 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 20:37:02,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 20:37:02,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 20:37:02,439 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 20:37:02,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 20:37:02,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 20:37:02,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 20:37:02,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 20:37:02,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 20:37:02,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 20:37:02,442 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 20:37:02,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 20:37:02,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 20:37:02,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 20:37:02,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 20:37:02,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 20:37:02,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 20:37:02,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 20:37:02,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:37:02,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 20:37:02,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 20:37:02,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 20:37:02,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 20:37:02,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 20:37:02,445 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 20:37:02,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 20:37:02,446 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 20:37:02,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 20:37:02,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 20:37:02,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 20:37:02,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 20:37:02,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 20:37:02,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 20:37:02,673 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 20:37:02,673 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 20:37:02,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.opt.yml/witness.yml [2024-06-21 20:37:02,769 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 20:37:02,770 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 20:37:02,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-21 20:37:03,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 20:37:03,883 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 20:37:03,883 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-21 20:37:03,896 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2556b9a/7fd649ba89cc424cbc198ed40cbf584e/FLAGaf5114917 [2024-06-21 20:37:03,912 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2556b9a/7fd649ba89cc424cbc198ed40cbf584e [2024-06-21 20:37:03,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 20:37:03,913 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 20:37:03,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 20:37:03,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 20:37:03,919 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 20:37:03,919 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:37:02" (1/2) ... [2024-06-21 20:37:03,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2412b80b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:37:03, skipping insertion in model container [2024-06-21 20:37:03,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:37:02" (1/2) ... [2024-06-21 20:37:03,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@141684c3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:37:03, skipping insertion in model container [2024-06-21 20:37:03,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:37:03" (2/2) ... [2024-06-21 20:37:03,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2412b80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:03, skipping insertion in model container [2024-06-21 20:37:03,922 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:37:03" (2/2) ... [2024-06-21 20:37:03,922 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 20:37:03,978 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 20:37:03,979 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] (((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-21 20:37:03,980 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$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)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-21 20:37:03,980 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 20:37:03,980 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-21 20:37:04,013 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 20:37:04,256 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:37:04,264 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 20:37:04,361 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:37:04,387 INFO L206 MainTranslator]: Completed translation [2024-06-21 20:37:04,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04 WrapperNode [2024-06-21 20:37:04,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 20:37:04,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 20:37:04,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 20:37:04,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 20:37:04,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (1/1) ... [2024-06-21 20:37:04,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (1/1) ... [2024-06-21 20:37:04,425 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-21 20:37:04,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 20:37:04,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 20:37:04,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 20:37:04,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 20:37:04,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (1/1) ... [2024-06-21 20:37:04,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (1/1) ... [2024-06-21 20:37:04,439 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (1/1) ... [2024-06-21 20:37:04,452 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]. [2024-06-21 20:37:04,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (1/1) ... [2024-06-21 20:37:04,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (1/1) ... [2024-06-21 20:37:04,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (1/1) ... [2024-06-21 20:37:04,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (1/1) ... [2024-06-21 20:37:04,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (1/1) ... [2024-06-21 20:37:04,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (1/1) ... [2024-06-21 20:37:04,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 20:37:04,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 20:37:04,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 20:37:04,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 20:37:04,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (1/1) ... [2024-06-21 20:37:04,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:37:04,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 20:37:04,533 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) [2024-06-21 20:37:04,568 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 [2024-06-21 20:37:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 20:37:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 20:37:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 20:37:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 20:37:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 20:37:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 20:37:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 20:37:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 20:37:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 20:37:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 20:37:04,610 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 20:37:04,707 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 20:37:04,709 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 20:37:04,996 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 20:37:04,996 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 20:37:05,128 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 20:37:05,128 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 20:37:05,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:37:05 BoogieIcfgContainer [2024-06-21 20:37:05,130 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 20:37:05,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 20:37:05,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 20:37:05,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 20:37:05,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:37:02" (1/4) ... [2024-06-21 20:37:05,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fb3d60 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:37:05, skipping insertion in model container [2024-06-21 20:37:05,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 08:37:03" (2/4) ... [2024-06-21 20:37:05,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fb3d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:37:05, skipping insertion in model container [2024-06-21 20:37:05,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:37:04" (3/4) ... [2024-06-21 20:37:05,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fb3d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:37:05, skipping insertion in model container [2024-06-21 20:37:05,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:37:05" (4/4) ... [2024-06-21 20:37:05,141 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.opt.i [2024-06-21 20:37:05,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 20:37:05,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 20:37:05,153 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 20:37:05,188 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 20:37:05,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 20:37:05,249 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-21 20:37:05,250 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:37:05,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 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. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 20:37:05,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 20:37:05,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-21 20:37:05,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 20:37:05,277 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;@2bdc32dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 20:37:05,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 20:37:05,281 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 20:37:05,281 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 20:37:05,281 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:37:05,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:05,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 20:37:05,282 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)] === [2024-06-21 20:37:05,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:05,286 INFO L85 PathProgramCache]: Analyzing trace with hash 364831899, now seen corresponding path program 1 times [2024-06-21 20:37:05,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:05,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515023677] [2024-06-21 20:37:05,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:05,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:06,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:06,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515023677] [2024-06-21 20:37:06,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515023677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:06,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:06,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 20:37:06,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24766369] [2024-06-21 20:37:06,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:06,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 20:37:06,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:06,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 20:37:06,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 20:37:06,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-21 20:37:06,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 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) [2024-06-21 20:37:06,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:06,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-21 20:37:06,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:06,276 INFO L124 PetriNetUnfolderBase]: 162/316 cut-off events. [2024-06-21 20:37:06,276 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-21 20:37:06,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 316 events. 162/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1286 event pairs, 97 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 616. Up to 288 conditions per place. [2024-06-21 20:37:06,281 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 21 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-21 20:37:06,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 117 flow [2024-06-21 20:37:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:37:06,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:37:06,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-06-21 20:37:06,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-21 20:37:06,291 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 59 transitions. [2024-06-21 20:37:06,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 117 flow [2024-06-21 20:37:06,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 20:37:06,295 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-21 20:37:06,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-21 20:37:06,299 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-21 20:37:06,299 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-21 20:37:06,300 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) [2024-06-21 20:37:06,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:06,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:06,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 20:37:06,300 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)] === [2024-06-21 20:37:06,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:06,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1583835590, now seen corresponding path program 1 times [2024-06-21 20:37:06,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:06,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984867519] [2024-06-21 20:37:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:06,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:06,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:06,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984867519] [2024-06-21 20:37:06,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984867519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:06,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:06,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 20:37:06,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074493216] [2024-06-21 20:37:06,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:06,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:37:06,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:06,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:37:06,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:37:06,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-21 20:37:06,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:37:06,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:06,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-21 20:37:06,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:06,949 INFO L124 PetriNetUnfolderBase]: 186/346 cut-off events. [2024-06-21 20:37:06,950 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-21 20:37:06,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 346 events. 186/346 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1381 event pairs, 94 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 776. Up to 319 conditions per place. [2024-06-21 20:37:06,952 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-21 20:37:06,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 161 flow [2024-06-21 20:37:06,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 20:37:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 20:37:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-21 20:37:06,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-21 20:37:06,954 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 73 transitions. [2024-06-21 20:37:06,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 161 flow [2024-06-21 20:37:06,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 20:37:06,957 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-21 20:37:06,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-21 20:37:06,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-21 20:37:06,957 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-21 20:37:06,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:37:06,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:06,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:06,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 20:37:06,958 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)] === [2024-06-21 20:37:06,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:06,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1854262106, now seen corresponding path program 1 times [2024-06-21 20:37:06,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:06,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621881696] [2024-06-21 20:37:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:06,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:07,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:07,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621881696] [2024-06-21 20:37:07,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621881696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:07,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:07,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:37:07,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577008508] [2024-06-21 20:37:07,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:07,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:37:07,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:07,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:37:07,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:37:07,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 20:37:07,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:37:07,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:07,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 20:37:07,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:07,612 INFO L124 PetriNetUnfolderBase]: 219/397 cut-off events. [2024-06-21 20:37:07,612 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2024-06-21 20:37:07,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 397 events. 219/397 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1503 event pairs, 99 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 989. Up to 366 conditions per place. [2024-06-21 20:37:07,616 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-21 20:37:07,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 211 flow [2024-06-21 20:37:07,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:37:07,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:37:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-21 20:37:07,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-21 20:37:07,620 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 85 transitions. [2024-06-21 20:37:07,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 211 flow [2024-06-21 20:37:07,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 20:37:07,624 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-21 20:37:07,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-21 20:37:07,625 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-21 20:37:07,625 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-21 20:37:07,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:37:07,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:07,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:07,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 20:37:07,626 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)] === [2024-06-21 20:37:07,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:07,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1592138219, now seen corresponding path program 1 times [2024-06-21 20:37:07,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:07,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273465245] [2024-06-21 20:37:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:07,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:08,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:08,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273465245] [2024-06-21 20:37:08,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273465245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:08,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:08,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:37:08,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147222687] [2024-06-21 20:37:08,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:08,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:37:08,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:08,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:37:08,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:37:08,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 20:37:08,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:37:08,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:08,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 20:37:08,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:08,377 INFO L124 PetriNetUnfolderBase]: 213/387 cut-off events. [2024-06-21 20:37:08,377 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-06-21 20:37:08,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 387 events. 213/387 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1454 event pairs, 57 based on Foata normal form. 4/389 useless extension candidates. Maximal degree in co-relation 1048. Up to 338 conditions per place. [2024-06-21 20:37:08,379 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-21 20:37:08,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 263 flow [2024-06-21 20:37:08,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:37:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:37:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-21 20:37:08,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-06-21 20:37:08,395 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 101 transitions. [2024-06-21 20:37:08,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 263 flow [2024-06-21 20:37:08,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 248 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 20:37:08,397 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 145 flow [2024-06-21 20:37:08,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-06-21 20:37:08,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-21 20:37:08,398 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 145 flow [2024-06-21 20:37:08,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:37:08,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:08,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:08,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 20:37:08,399 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)] === [2024-06-21 20:37:08,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:08,399 INFO L85 PathProgramCache]: Analyzing trace with hash 22408742, now seen corresponding path program 1 times [2024-06-21 20:37:08,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:08,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462447199] [2024-06-21 20:37:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:08,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:08,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:08,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462447199] [2024-06-21 20:37:08,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462447199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:08,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:08,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:37:08,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705046813] [2024-06-21 20:37:08,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:08,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:37:08,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:08,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:37:08,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:37:08,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 20:37:08,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:37:08,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:08,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 20:37:08,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:09,085 INFO L124 PetriNetUnfolderBase]: 165/333 cut-off events. [2024-06-21 20:37:09,085 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-06-21 20:37:09,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 333 events. 165/333 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1320 event pairs, 61 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 946. Up to 291 conditions per place. [2024-06-21 20:37:09,087 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-06-21 20:37:09,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 229 flow [2024-06-21 20:37:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:37:09,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:37:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-21 20:37:09,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-21 20:37:09,088 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 145 flow. Second operand 5 states and 74 transitions. [2024-06-21 20:37:09,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 229 flow [2024-06-21 20:37:09,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 208 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 20:37:09,090 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 151 flow [2024-06-21 20:37:09,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-21 20:37:09,090 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-21 20:37:09,091 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 151 flow [2024-06-21 20:37:09,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:37:09,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:09,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:09,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 20:37:09,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:37:09,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash 694672028, now seen corresponding path program 1 times [2024-06-21 20:37:09,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:09,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745393835] [2024-06-21 20:37:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:09,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:09,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:09,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745393835] [2024-06-21 20:37:09,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745393835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:09,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:09,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:37:09,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673713419] [2024-06-21 20:37:09,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:09,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:37:09,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:37:09,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:37:09,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 20:37:09,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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) [2024-06-21 20:37:09,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:09,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 20:37:09,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:10,114 INFO L124 PetriNetUnfolderBase]: 163/330 cut-off events. [2024-06-21 20:37:10,114 INFO L125 PetriNetUnfolderBase]: For 597/597 co-relation queries the response was YES. [2024-06-21 20:37:10,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 330 events. 163/330 cut-off events. For 597/597 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1300 event pairs, 60 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 977. Up to 285 conditions per place. [2024-06-21 20:37:10,116 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-21 20:37:10,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 245 flow [2024-06-21 20:37:10,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:37:10,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:37:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-21 20:37:10,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-21 20:37:10,117 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 151 flow. Second operand 6 states and 86 transitions. [2024-06-21 20:37:10,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 245 flow [2024-06-21 20:37:10,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 234 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 20:37:10,119 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 173 flow [2024-06-21 20:37:10,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-06-21 20:37:10,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-21 20:37:10,120 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 173 flow [2024-06-21 20:37:10,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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) [2024-06-21 20:37:10,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:10,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:10,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 20:37:10,121 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)] === [2024-06-21 20:37:10,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash 459579635, now seen corresponding path program 1 times [2024-06-21 20:37:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138420075] [2024-06-21 20:37:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:10,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:10,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138420075] [2024-06-21 20:37:10,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138420075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:10,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:10,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:37:10,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485255178] [2024-06-21 20:37:10,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:10,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:37:10,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:10,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:37:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:37:10,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:37:10,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 173 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) [2024-06-21 20:37:10,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:10,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:37:10,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:10,930 INFO L124 PetriNetUnfolderBase]: 193/366 cut-off events. [2024-06-21 20:37:10,930 INFO L125 PetriNetUnfolderBase]: For 913/913 co-relation queries the response was YES. [2024-06-21 20:37:10,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 366 events. 193/366 cut-off events. For 913/913 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1398 event pairs, 71 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1189. Up to 331 conditions per place. [2024-06-21 20:37:10,932 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-21 20:37:10,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 287 flow [2024-06-21 20:37:10,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:37:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:37:10,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-21 20:37:10,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 20:37:10,934 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 173 flow. Second operand 6 states and 84 transitions. [2024-06-21 20:37:10,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 287 flow [2024-06-21 20:37:10,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 270 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 20:37:10,936 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 189 flow [2024-06-21 20:37:10,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-21 20:37:10,936 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-21 20:37:10,937 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 189 flow [2024-06-21 20:37:10,937 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) [2024-06-21 20:37:10,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:10,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:10,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 20:37:10,937 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)] === [2024-06-21 20:37:10,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash 59987525, now seen corresponding path program 2 times [2024-06-21 20:37:10,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:10,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756735212] [2024-06-21 20:37:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:10,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:11,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:11,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756735212] [2024-06-21 20:37:11,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756735212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:11,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:11,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:37:11,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295420498] [2024-06-21 20:37:11,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:11,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:37:11,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:11,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:37:11,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:37:11,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:37:11,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 189 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) [2024-06-21 20:37:11,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:11,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:37:11,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:11,674 INFO L124 PetriNetUnfolderBase]: 191/364 cut-off events. [2024-06-21 20:37:11,674 INFO L125 PetriNetUnfolderBase]: For 1196/1202 co-relation queries the response was YES. [2024-06-21 20:37:11,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 364 events. 191/364 cut-off events. For 1196/1202 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1419 event pairs, 75 based on Foata normal form. 5/366 useless extension candidates. Maximal degree in co-relation 1249. Up to 322 conditions per place. [2024-06-21 20:37:11,676 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 30 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-21 20:37:11,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 297 flow [2024-06-21 20:37:11,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:37:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:37:11,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-21 20:37:11,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-06-21 20:37:11,677 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 189 flow. Second operand 6 states and 83 transitions. [2024-06-21 20:37:11,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 297 flow [2024-06-21 20:37:11,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 280 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 20:37:11,679 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 215 flow [2024-06-21 20:37:11,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-21 20:37:11,680 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-21 20:37:11,680 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 215 flow [2024-06-21 20:37:11,680 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) [2024-06-21 20:37:11,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:11,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:11,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 20:37:11,680 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)] === [2024-06-21 20:37:11,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:11,681 INFO L85 PathProgramCache]: Analyzing trace with hash 501071554, now seen corresponding path program 1 times [2024-06-21 20:37:11,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:11,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53411315] [2024-06-21 20:37:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:11,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:12,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:12,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53411315] [2024-06-21 20:37:12,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53411315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:12,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:12,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:37:12,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437623529] [2024-06-21 20:37:12,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:12,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:37:12,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:12,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:37:12,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:37:12,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 20:37:12,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 215 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) [2024-06-21 20:37:12,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:12,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 20:37:12,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:12,690 INFO L124 PetriNetUnfolderBase]: 204/372 cut-off events. [2024-06-21 20:37:12,690 INFO L125 PetriNetUnfolderBase]: For 1452/1452 co-relation queries the response was YES. [2024-06-21 20:37:12,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 372 events. 204/372 cut-off events. For 1452/1452 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1360 event pairs, 31 based on Foata normal form. 4/374 useless extension candidates. Maximal degree in co-relation 1334. Up to 305 conditions per place. [2024-06-21 20:37:12,692 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 47 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-21 20:37:12,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 383 flow [2024-06-21 20:37:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-21 20:37:12,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48828125 [2024-06-21 20:37:12,693 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 215 flow. Second operand 8 states and 125 transitions. [2024-06-21 20:37:12,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 383 flow [2024-06-21 20:37:12,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 356 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 20:37:12,695 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 217 flow [2024-06-21 20:37:12,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-21 20:37:12,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-21 20:37:12,696 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 217 flow [2024-06-21 20:37:12,696 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) [2024-06-21 20:37:12,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:12,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:12,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 20:37:12,697 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)] === [2024-06-21 20:37:12,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:12,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1361888085, now seen corresponding path program 1 times [2024-06-21 20:37:12,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:12,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407476630] [2024-06-21 20:37:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:12,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407476630] [2024-06-21 20:37:13,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407476630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:13,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:13,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:37:13,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174759677] [2024-06-21 20:37:13,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:13,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:37:13,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:13,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:37:13,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:37:13,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:13,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 217 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) [2024-06-21 20:37:13,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:13,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:13,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:13,597 INFO L124 PetriNetUnfolderBase]: 215/393 cut-off events. [2024-06-21 20:37:13,597 INFO L125 PetriNetUnfolderBase]: For 1842/1842 co-relation queries the response was YES. [2024-06-21 20:37:13,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 393 events. 215/393 cut-off events. For 1842/1842 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1468 event pairs, 51 based on Foata normal form. 1/390 useless extension candidates. Maximal degree in co-relation 1493. Up to 350 conditions per place. [2024-06-21 20:37:13,599 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2024-06-21 20:37:13,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 421 flow [2024-06-21 20:37:13,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:13,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-21 20:37:13,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-21 20:37:13,600 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 217 flow. Second operand 8 states and 99 transitions. [2024-06-21 20:37:13,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 421 flow [2024-06-21 20:37:13,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 379 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 20:37:13,605 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 296 flow [2024-06-21 20:37:13,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=296, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-06-21 20:37:13,606 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-21 20:37:13,606 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 296 flow [2024-06-21 20:37:13,606 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) [2024-06-21 20:37:13,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:13,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:13,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 20:37:13,607 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)] === [2024-06-21 20:37:13,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:13,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2116401053, now seen corresponding path program 2 times [2024-06-21 20:37:13,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:13,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549984528] [2024-06-21 20:37:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:13,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:14,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:14,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549984528] [2024-06-21 20:37:14,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549984528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:14,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:14,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:37:14,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523712832] [2024-06-21 20:37:14,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:14,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:37:14,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:37:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:37:14,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:14,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 296 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) [2024-06-21 20:37:14,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:14,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:14,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:14,402 INFO L124 PetriNetUnfolderBase]: 222/405 cut-off events. [2024-06-21 20:37:14,402 INFO L125 PetriNetUnfolderBase]: For 2259/2261 co-relation queries the response was YES. [2024-06-21 20:37:14,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 405 events. 222/405 cut-off events. For 2259/2261 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1532 event pairs, 48 based on Foata normal form. 3/406 useless extension candidates. Maximal degree in co-relation 1633. Up to 360 conditions per place. [2024-06-21 20:37:14,405 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 46 selfloop transitions, 19 changer transitions 0/68 dead transitions. [2024-06-21 20:37:14,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 68 transitions, 503 flow [2024-06-21 20:37:14,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-21 20:37:14,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 20:37:14,406 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 296 flow. Second operand 8 states and 102 transitions. [2024-06-21 20:37:14,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 68 transitions, 503 flow [2024-06-21 20:37:14,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 481 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 20:37:14,409 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 370 flow [2024-06-21 20:37:14,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=370, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-06-21 20:37:14,410 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-21 20:37:14,410 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 370 flow [2024-06-21 20:37:14,410 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) [2024-06-21 20:37:14,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:14,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:14,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 20:37:14,410 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)] === [2024-06-21 20:37:14,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:14,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1623438693, now seen corresponding path program 3 times [2024-06-21 20:37:14,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:14,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279164141] [2024-06-21 20:37:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:14,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:14,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:14,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279164141] [2024-06-21 20:37:14,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279164141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:14,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:14,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:37:14,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899761402] [2024-06-21 20:37:14,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:14,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:37:14,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:14,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:37:14,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:37:15,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:15,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 370 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) [2024-06-21 20:37:15,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:15,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:15,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:15,264 INFO L124 PetriNetUnfolderBase]: 230/419 cut-off events. [2024-06-21 20:37:15,264 INFO L125 PetriNetUnfolderBase]: For 2961/2961 co-relation queries the response was YES. [2024-06-21 20:37:15,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1840 conditions, 419 events. 230/419 cut-off events. For 2961/2961 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1570 event pairs, 50 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1809. Up to 358 conditions per place. [2024-06-21 20:37:15,267 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 42 selfloop transitions, 24 changer transitions 0/69 dead transitions. [2024-06-21 20:37:15,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 594 flow [2024-06-21 20:37:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:37:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:37:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-21 20:37:15,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:37:15,268 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 370 flow. Second operand 7 states and 91 transitions. [2024-06-21 20:37:15,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 594 flow [2024-06-21 20:37:15,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 549 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 20:37:15,272 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 422 flow [2024-06-21 20:37:15,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=422, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-06-21 20:37:15,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-21 20:37:15,273 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 422 flow [2024-06-21 20:37:15,273 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) [2024-06-21 20:37:15,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:15,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:15,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 20:37:15,273 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)] === [2024-06-21 20:37:15,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:15,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1362067823, now seen corresponding path program 1 times [2024-06-21 20:37:15,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:15,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616087601] [2024-06-21 20:37:15,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:15,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:16,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:16,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616087601] [2024-06-21 20:37:16,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616087601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:16,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:16,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:37:16,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451888107] [2024-06-21 20:37:16,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:16,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:37:16,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:37:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:37:16,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:37:16,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 422 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-21 20:37:16,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:16,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:37:16,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:16,320 INFO L124 PetriNetUnfolderBase]: 218/408 cut-off events. [2024-06-21 20:37:16,321 INFO L125 PetriNetUnfolderBase]: For 3353/3355 co-relation queries the response was YES. [2024-06-21 20:37:16,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 408 events. 218/408 cut-off events. For 3353/3355 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1576 event pairs, 48 based on Foata normal form. 3/409 useless extension candidates. Maximal degree in co-relation 1796. Up to 348 conditions per place. [2024-06-21 20:37:16,323 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 45 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-21 20:37:16,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 576 flow [2024-06-21 20:37:16,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:37:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:37:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-21 20:37:16,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-21 20:37:16,324 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 422 flow. Second operand 7 states and 94 transitions. [2024-06-21 20:37:16,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 576 flow [2024-06-21 20:37:16,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 543 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 20:37:16,328 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 434 flow [2024-06-21 20:37:16,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=434, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-06-21 20:37:16,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-21 20:37:16,329 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 434 flow [2024-06-21 20:37:16,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-21 20:37:16,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:16,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:16,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 20:37:16,330 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)] === [2024-06-21 20:37:16,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:16,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1368554325, now seen corresponding path program 4 times [2024-06-21 20:37:16,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:16,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132011644] [2024-06-21 20:37:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:16,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:16,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:16,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132011644] [2024-06-21 20:37:16,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132011644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:16,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:16,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:37:16,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506718266] [2024-06-21 20:37:16,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:16,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:37:16,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:16,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:37:16,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:37:17,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:17,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 434 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) [2024-06-21 20:37:17,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:17,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:17,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:17,153 INFO L124 PetriNetUnfolderBase]: 231/420 cut-off events. [2024-06-21 20:37:17,153 INFO L125 PetriNetUnfolderBase]: For 3786/3789 co-relation queries the response was YES. [2024-06-21 20:37:17,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 420 events. 231/420 cut-off events. For 3786/3789 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1587 event pairs, 51 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1955. Up to 351 conditions per place. [2024-06-21 20:37:17,156 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 40 selfloop transitions, 27 changer transitions 0/70 dead transitions. [2024-06-21 20:37:17,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 634 flow [2024-06-21 20:37:17,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:37:17,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:37:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-21 20:37:17,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-21 20:37:17,157 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 434 flow. Second operand 7 states and 90 transitions. [2024-06-21 20:37:17,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 634 flow [2024-06-21 20:37:17,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 605 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 20:37:17,161 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 492 flow [2024-06-21 20:37:17,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-06-21 20:37:17,162 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-21 20:37:17,162 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 492 flow [2024-06-21 20:37:17,162 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) [2024-06-21 20:37:17,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:17,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:17,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 20:37:17,162 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)] === [2024-06-21 20:37:17,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:17,163 INFO L85 PathProgramCache]: Analyzing trace with hash -15148519, now seen corresponding path program 5 times [2024-06-21 20:37:17,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:17,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901825031] [2024-06-21 20:37:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:17,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:17,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:17,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901825031] [2024-06-21 20:37:17,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901825031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:17,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:17,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:37:17,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884818895] [2024-06-21 20:37:17,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:17,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:37:17,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:37:17,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:37:17,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:17,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 492 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) [2024-06-21 20:37:17,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:17,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:17,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:17,893 INFO L124 PetriNetUnfolderBase]: 229/417 cut-off events. [2024-06-21 20:37:17,893 INFO L125 PetriNetUnfolderBase]: For 4245/4245 co-relation queries the response was YES. [2024-06-21 20:37:17,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 417 events. 229/417 cut-off events. For 4245/4245 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1564 event pairs, 47 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 2016. Up to 372 conditions per place. [2024-06-21 20:37:17,895 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 19 changer transitions 0/76 dead transitions. [2024-06-21 20:37:17,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 685 flow [2024-06-21 20:37:17,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-21 20:37:17,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 20:37:17,896 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 492 flow. Second operand 8 states and 102 transitions. [2024-06-21 20:37:17,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 685 flow [2024-06-21 20:37:17,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 608 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-21 20:37:17,901 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 493 flow [2024-06-21 20:37:17,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=493, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2024-06-21 20:37:17,901 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-21 20:37:17,901 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 493 flow [2024-06-21 20:37:17,902 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) [2024-06-21 20:37:17,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:17,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:17,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 20:37:17,902 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)] === [2024-06-21 20:37:17,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:17,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1859614301, now seen corresponding path program 2 times [2024-06-21 20:37:17,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:17,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489491035] [2024-06-21 20:37:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:17,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:18,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489491035] [2024-06-21 20:37:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489491035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:18,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:18,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:37:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808722686] [2024-06-21 20:37:18,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:18,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:37:18,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:18,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:37:18,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:37:18,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:37:18,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 493 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-21 20:37:18,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:18,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:37:18,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:18,814 INFO L124 PetriNetUnfolderBase]: 217/408 cut-off events. [2024-06-21 20:37:18,815 INFO L125 PetriNetUnfolderBase]: For 4670/4670 co-relation queries the response was YES. [2024-06-21 20:37:18,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 408 events. 217/408 cut-off events. For 4670/4670 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1585 event pairs, 51 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 1947. Up to 343 conditions per place. [2024-06-21 20:37:18,817 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 44 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2024-06-21 20:37:18,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 641 flow [2024-06-21 20:37:18,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:37:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:37:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-21 20:37:18,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-21 20:37:18,819 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 493 flow. Second operand 7 states and 93 transitions. [2024-06-21 20:37:18,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 641 flow [2024-06-21 20:37:18,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 73 transitions, 598 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-21 20:37:18,823 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 505 flow [2024-06-21 20:37:18,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=505, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-06-21 20:37:18,824 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-21 20:37:18,824 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 505 flow [2024-06-21 20:37:18,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-21 20:37:18,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:18,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:18,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 20:37:18,825 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)] === [2024-06-21 20:37:18,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:18,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1859910971, now seen corresponding path program 3 times [2024-06-21 20:37:18,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:18,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513063049] [2024-06-21 20:37:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:18,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:19,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:19,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513063049] [2024-06-21 20:37:19,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513063049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:19,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:19,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:37:19,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296207389] [2024-06-21 20:37:19,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:19,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:37:19,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:19,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:37:19,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:37:19,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:37:19,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 505 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-21 20:37:19,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:19,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:37:19,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:19,795 INFO L124 PetriNetUnfolderBase]: 215/405 cut-off events. [2024-06-21 20:37:19,795 INFO L125 PetriNetUnfolderBase]: For 5110/5110 co-relation queries the response was YES. [2024-06-21 20:37:19,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 405 events. 215/405 cut-off events. For 5110/5110 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1569 event pairs, 51 based on Foata normal form. 1/402 useless extension candidates. Maximal degree in co-relation 1978. Up to 331 conditions per place. [2024-06-21 20:37:19,797 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 43 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2024-06-21 20:37:19,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 675 flow [2024-06-21 20:37:19,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:37:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:37:19,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-21 20:37:19,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-21 20:37:19,799 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 505 flow. Second operand 7 states and 94 transitions. [2024-06-21 20:37:19,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 77 transitions, 675 flow [2024-06-21 20:37:19,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 77 transitions, 636 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 20:37:19,804 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 556 flow [2024-06-21 20:37:19,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=556, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2024-06-21 20:37:19,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-21 20:37:19,804 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 556 flow [2024-06-21 20:37:19,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-21 20:37:19,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:19,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:19,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 20:37:19,805 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)] === [2024-06-21 20:37:19,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:19,805 INFO L85 PathProgramCache]: Analyzing trace with hash 138010301, now seen corresponding path program 1 times [2024-06-21 20:37:19,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:19,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472429956] [2024-06-21 20:37:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:19,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:20,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:20,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472429956] [2024-06-21 20:37:20,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472429956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:20,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:20,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:20,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21552867] [2024-06-21 20:37:20,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:20,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:20,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:20,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:21,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:37:21,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 556 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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) [2024-06-21 20:37:21,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:21,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:37:21,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:21,262 INFO L124 PetriNetUnfolderBase]: 211/399 cut-off events. [2024-06-21 20:37:21,262 INFO L125 PetriNetUnfolderBase]: For 5594/5594 co-relation queries the response was YES. [2024-06-21 20:37:21,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 399 events. 211/399 cut-off events. For 5594/5594 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1529 event pairs, 50 based on Foata normal form. 1/398 useless extension candidates. Maximal degree in co-relation 2022. Up to 350 conditions per place. [2024-06-21 20:37:21,265 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 54 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2024-06-21 20:37:21,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 79 transitions, 712 flow [2024-06-21 20:37:21,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:37:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:37:21,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-21 20:37:21,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-21 20:37:21,266 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 556 flow. Second operand 7 states and 92 transitions. [2024-06-21 20:37:21,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 79 transitions, 712 flow [2024-06-21 20:37:21,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 79 transitions, 681 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 20:37:21,274 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 569 flow [2024-06-21 20:37:21,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=569, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-06-21 20:37:21,274 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-21 20:37:21,274 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 569 flow [2024-06-21 20:37:21,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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) [2024-06-21 20:37:21,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:21,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:21,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 20:37:21,275 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)] === [2024-06-21 20:37:21,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:21,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1218721180, now seen corresponding path program 1 times [2024-06-21 20:37:21,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:21,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058866778] [2024-06-21 20:37:21,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:21,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:21,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:21,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058866778] [2024-06-21 20:37:21,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058866778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:21,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:21,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:21,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286228410] [2024-06-21 20:37:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:21,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:21,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:21,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:21,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 569 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) [2024-06-21 20:37:21,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:21,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:21,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:22,252 INFO L124 PetriNetUnfolderBase]: 238/436 cut-off events. [2024-06-21 20:37:22,252 INFO L125 PetriNetUnfolderBase]: For 6487/6487 co-relation queries the response was YES. [2024-06-21 20:37:22,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2337 conditions, 436 events. 238/436 cut-off events. For 6487/6487 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1669 event pairs, 50 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 2294. Up to 368 conditions per place. [2024-06-21 20:37:22,255 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 65 selfloop transitions, 22 changer transitions 0/90 dead transitions. [2024-06-21 20:37:22,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 90 transitions, 814 flow [2024-06-21 20:37:22,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:22,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-21 20:37:22,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-21 20:37:22,256 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 569 flow. Second operand 9 states and 113 transitions. [2024-06-21 20:37:22,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 90 transitions, 814 flow [2024-06-21 20:37:22,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 769 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 20:37:22,263 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 624 flow [2024-06-21 20:37:22,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-06-21 20:37:22,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-21 20:37:22,264 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 624 flow [2024-06-21 20:37:22,264 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) [2024-06-21 20:37:22,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:22,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:22,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 20:37:22,264 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)] === [2024-06-21 20:37:22,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:22,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1218571450, now seen corresponding path program 2 times [2024-06-21 20:37:22,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:22,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924978983] [2024-06-21 20:37:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:22,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:22,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:22,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924978983] [2024-06-21 20:37:22,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924978983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:22,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:22,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:22,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948796048] [2024-06-21 20:37:22,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:22,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:22,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:22,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:22,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:22,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:22,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 624 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) [2024-06-21 20:37:22,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:22,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:22,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:23,149 INFO L124 PetriNetUnfolderBase]: 254/466 cut-off events. [2024-06-21 20:37:23,150 INFO L125 PetriNetUnfolderBase]: For 7815/7815 co-relation queries the response was YES. [2024-06-21 20:37:23,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 466 events. 254/466 cut-off events. For 7815/7815 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1842 event pairs, 46 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2561. Up to 366 conditions per place. [2024-06-21 20:37:23,153 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 64 selfloop transitions, 30 changer transitions 0/97 dead transitions. [2024-06-21 20:37:23,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 97 transitions, 936 flow [2024-06-21 20:37:23,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:23,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:23,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-21 20:37:23,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-21 20:37:23,154 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 624 flow. Second operand 8 states and 106 transitions. [2024-06-21 20:37:23,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 97 transitions, 936 flow [2024-06-21 20:37:23,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 897 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 20:37:23,161 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 704 flow [2024-06-21 20:37:23,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=704, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-06-21 20:37:23,162 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-21 20:37:23,162 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 704 flow [2024-06-21 20:37:23,162 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) [2024-06-21 20:37:23,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:23,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:23,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 20:37:23,163 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)] === [2024-06-21 20:37:23,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1218571233, now seen corresponding path program 1 times [2024-06-21 20:37:23,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:23,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276224959] [2024-06-21 20:37:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:23,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:23,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276224959] [2024-06-21 20:37:23,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276224959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:23,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:23,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:23,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071929701] [2024-06-21 20:37:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:23,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:23,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:23,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:23,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 704 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) [2024-06-21 20:37:23,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:23,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:23,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:24,212 INFO L124 PetriNetUnfolderBase]: 257/471 cut-off events. [2024-06-21 20:37:24,212 INFO L125 PetriNetUnfolderBase]: For 8616/8616 co-relation queries the response was YES. [2024-06-21 20:37:24,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2709 conditions, 471 events. 257/471 cut-off events. For 8616/8616 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1860 event pairs, 47 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2663. Up to 406 conditions per place. [2024-06-21 20:37:24,215 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 25 changer transitions 0/96 dead transitions. [2024-06-21 20:37:24,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 938 flow [2024-06-21 20:37:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:24,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-21 20:37:24,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-21 20:37:24,217 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 704 flow. Second operand 8 states and 101 transitions. [2024-06-21 20:37:24,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 938 flow [2024-06-21 20:37:24,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 894 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-21 20:37:24,227 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 741 flow [2024-06-21 20:37:24,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=741, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-06-21 20:37:24,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-21 20:37:24,228 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 741 flow [2024-06-21 20:37:24,228 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) [2024-06-21 20:37:24,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:24,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:24,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 20:37:24,228 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)] === [2024-06-21 20:37:24,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:24,229 INFO L85 PathProgramCache]: Analyzing trace with hash -725569669, now seen corresponding path program 2 times [2024-06-21 20:37:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:24,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479833039] [2024-06-21 20:37:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:24,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:24,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:24,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479833039] [2024-06-21 20:37:24,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479833039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:24,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:24,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:24,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530858873] [2024-06-21 20:37:24,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:24,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:24,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:24,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:24,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:25,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:25,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 741 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) [2024-06-21 20:37:25,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:25,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:25,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:25,201 INFO L124 PetriNetUnfolderBase]: 265/484 cut-off events. [2024-06-21 20:37:25,202 INFO L125 PetriNetUnfolderBase]: For 9530/9530 co-relation queries the response was YES. [2024-06-21 20:37:25,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2882 conditions, 484 events. 265/484 cut-off events. For 9530/9530 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1921 event pairs, 49 based on Foata normal form. 1/483 useless extension candidates. Maximal degree in co-relation 2834. Up to 401 conditions per place. [2024-06-21 20:37:25,205 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 65 selfloop transitions, 31 changer transitions 0/99 dead transitions. [2024-06-21 20:37:25,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 99 transitions, 1047 flow [2024-06-21 20:37:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:25,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-21 20:37:25,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 20:37:25,209 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 741 flow. Second operand 8 states and 102 transitions. [2024-06-21 20:37:25,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 99 transitions, 1047 flow [2024-06-21 20:37:25,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 986 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 20:37:25,220 INFO L231 Difference]: Finished difference. Result has 103 places, 89 transitions, 799 flow [2024-06-21 20:37:25,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=799, PETRI_PLACES=103, PETRI_TRANSITIONS=89} [2024-06-21 20:37:25,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-21 20:37:25,220 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 89 transitions, 799 flow [2024-06-21 20:37:25,221 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) [2024-06-21 20:37:25,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:25,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:25,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 20:37:25,221 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)] === [2024-06-21 20:37:25,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1212999324, now seen corresponding path program 1 times [2024-06-21 20:37:25,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:25,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614122550] [2024-06-21 20:37:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:25,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:25,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614122550] [2024-06-21 20:37:25,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614122550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:25,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:25,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:25,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40837069] [2024-06-21 20:37:25,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:25,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:25,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:25,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:25,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:25,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:37:25,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 89 transitions, 799 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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) [2024-06-21 20:37:25,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:25,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:37:25,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:26,181 INFO L124 PetriNetUnfolderBase]: 255/478 cut-off events. [2024-06-21 20:37:26,182 INFO L125 PetriNetUnfolderBase]: For 10534/10534 co-relation queries the response was YES. [2024-06-21 20:37:26,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2867 conditions, 478 events. 255/478 cut-off events. For 10534/10534 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1964 event pairs, 47 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2818. Up to 399 conditions per place. [2024-06-21 20:37:26,185 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-21 20:37:26,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 101 transitions, 1013 flow [2024-06-21 20:37:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-21 20:37:26,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-21 20:37:26,187 INFO L175 Difference]: Start difference. First operand has 103 places, 89 transitions, 799 flow. Second operand 8 states and 106 transitions. [2024-06-21 20:37:26,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 101 transitions, 1013 flow [2024-06-21 20:37:26,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 101 transitions, 960 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-21 20:37:26,198 INFO L231 Difference]: Finished difference. Result has 107 places, 91 transitions, 805 flow [2024-06-21 20:37:26,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=805, PETRI_PLACES=107, PETRI_TRANSITIONS=91} [2024-06-21 20:37:26,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-21 20:37:26,199 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 91 transitions, 805 flow [2024-06-21 20:37:26,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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) [2024-06-21 20:37:26,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:26,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:26,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 20:37:26,200 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)] === [2024-06-21 20:37:26,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:26,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1213007043, now seen corresponding path program 3 times [2024-06-21 20:37:26,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:26,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23301947] [2024-06-21 20:37:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:26,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:26,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:26,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23301947] [2024-06-21 20:37:26,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23301947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:26,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:26,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:26,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095135531] [2024-06-21 20:37:26,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:26,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:26,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:26,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:26,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:26,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:26,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 91 transitions, 805 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) [2024-06-21 20:37:26,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:26,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:26,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:27,195 INFO L124 PetriNetUnfolderBase]: 269/491 cut-off events. [2024-06-21 20:37:27,196 INFO L125 PetriNetUnfolderBase]: For 10952/10952 co-relation queries the response was YES. [2024-06-21 20:37:27,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3036 conditions, 491 events. 269/491 cut-off events. For 10952/10952 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1965 event pairs, 48 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2985. Up to 422 conditions per place. [2024-06-21 20:37:27,199 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 26 changer transitions 0/100 dead transitions. [2024-06-21 20:37:27,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 100 transitions, 1021 flow [2024-06-21 20:37:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-21 20:37:27,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 20:37:27,200 INFO L175 Difference]: Start difference. First operand has 107 places, 91 transitions, 805 flow. Second operand 8 states and 100 transitions. [2024-06-21 20:37:27,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 100 transitions, 1021 flow [2024-06-21 20:37:27,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 100 transitions, 968 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 20:37:27,211 INFO L231 Difference]: Finished difference. Result has 109 places, 91 transitions, 809 flow [2024-06-21 20:37:27,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=809, PETRI_PLACES=109, PETRI_TRANSITIONS=91} [2024-06-21 20:37:27,211 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-21 20:37:27,212 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 91 transitions, 809 flow [2024-06-21 20:37:27,212 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) [2024-06-21 20:37:27,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:27,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:27,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 20:37:27,212 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)] === [2024-06-21 20:37:27,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:27,213 INFO L85 PathProgramCache]: Analyzing trace with hash -282690396, now seen corresponding path program 3 times [2024-06-21 20:37:27,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:27,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182351808] [2024-06-21 20:37:27,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:27,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:27,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:27,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182351808] [2024-06-21 20:37:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182351808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:27,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:27,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:27,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688804089] [2024-06-21 20:37:27,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:27,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:27,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:27,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:27,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:27,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:27,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 91 transitions, 809 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) [2024-06-21 20:37:27,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:27,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:27,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:28,097 INFO L124 PetriNetUnfolderBase]: 287/525 cut-off events. [2024-06-21 20:37:28,097 INFO L125 PetriNetUnfolderBase]: For 12218/12218 co-relation queries the response was YES. [2024-06-21 20:37:28,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3219 conditions, 525 events. 287/525 cut-off events. For 12218/12218 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2162 event pairs, 49 based on Foata normal form. 2/522 useless extension candidates. Maximal degree in co-relation 3167. Up to 428 conditions per place. [2024-06-21 20:37:28,101 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 29 changer transitions 0/109 dead transitions. [2024-06-21 20:37:28,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 109 transitions, 1123 flow [2024-06-21 20:37:28,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:28,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:28,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 20:37:28,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 20:37:28,104 INFO L175 Difference]: Start difference. First operand has 109 places, 91 transitions, 809 flow. Second operand 9 states and 116 transitions. [2024-06-21 20:37:28,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 109 transitions, 1123 flow [2024-06-21 20:37:28,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 109 transitions, 1046 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:28,117 INFO L231 Difference]: Finished difference. Result has 113 places, 99 transitions, 898 flow [2024-06-21 20:37:28,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=898, PETRI_PLACES=113, PETRI_TRANSITIONS=99} [2024-06-21 20:37:28,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-21 20:37:28,118 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 99 transitions, 898 flow [2024-06-21 20:37:28,118 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) [2024-06-21 20:37:28,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:28,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:28,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 20:37:28,119 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)] === [2024-06-21 20:37:28,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1813469261, now seen corresponding path program 4 times [2024-06-21 20:37:28,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:28,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948807800] [2024-06-21 20:37:28,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:28,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:28,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:28,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948807800] [2024-06-21 20:37:28,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948807800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:28,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:28,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:28,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093475699] [2024-06-21 20:37:28,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:28,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:28,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:28,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:28,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:28,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 99 transitions, 898 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) [2024-06-21 20:37:28,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:28,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:28,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:29,111 INFO L124 PetriNetUnfolderBase]: 295/537 cut-off events. [2024-06-21 20:37:29,111 INFO L125 PetriNetUnfolderBase]: For 13377/13377 co-relation queries the response was YES. [2024-06-21 20:37:29,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 537 events. 295/537 cut-off events. For 13377/13377 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2205 event pairs, 52 based on Foata normal form. 1/534 useless extension candidates. Maximal degree in co-relation 3367. Up to 445 conditions per place. [2024-06-21 20:37:29,115 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 35 changer transitions 0/111 dead transitions. [2024-06-21 20:37:29,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 1238 flow [2024-06-21 20:37:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-21 20:37:29,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 20:37:29,119 INFO L175 Difference]: Start difference. First operand has 113 places, 99 transitions, 898 flow. Second operand 8 states and 102 transitions. [2024-06-21 20:37:29,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 111 transitions, 1238 flow [2024-06-21 20:37:29,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 1172 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-21 20:37:29,133 INFO L231 Difference]: Finished difference. Result has 116 places, 103 transitions, 967 flow [2024-06-21 20:37:29,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=967, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2024-06-21 20:37:29,134 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-21 20:37:29,134 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 967 flow [2024-06-21 20:37:29,134 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) [2024-06-21 20:37:29,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:29,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:29,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 20:37:29,134 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)] === [2024-06-21 20:37:29,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:29,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1813469540, now seen corresponding path program 2 times [2024-06-21 20:37:29,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:29,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042232327] [2024-06-21 20:37:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:29,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:29,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:29,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042232327] [2024-06-21 20:37:29,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042232327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:29,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:29,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:29,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195785826] [2024-06-21 20:37:29,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:29,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:29,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:29,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:29,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:29,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:37:29,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 967 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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) [2024-06-21 20:37:29,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:29,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:37:29,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:30,081 INFO L124 PetriNetUnfolderBase]: 282/528 cut-off events. [2024-06-21 20:37:30,082 INFO L125 PetriNetUnfolderBase]: For 14498/14498 co-relation queries the response was YES. [2024-06-21 20:37:30,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3368 conditions, 528 events. 282/528 cut-off events. For 14498/14498 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2241 event pairs, 48 based on Foata normal form. 2/527 useless extension candidates. Maximal degree in co-relation 3312. Up to 433 conditions per place. [2024-06-21 20:37:30,092 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 74 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-06-21 20:37:30,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 1197 flow [2024-06-21 20:37:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:30,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-21 20:37:30,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-21 20:37:30,094 INFO L175 Difference]: Start difference. First operand has 116 places, 103 transitions, 967 flow. Second operand 8 states and 105 transitions. [2024-06-21 20:37:30,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 1197 flow [2024-06-21 20:37:30,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 113 transitions, 1130 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-21 20:37:30,111 INFO L231 Difference]: Finished difference. Result has 120 places, 105 transitions, 971 flow [2024-06-21 20:37:30,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=971, PETRI_PLACES=120, PETRI_TRANSITIONS=105} [2024-06-21 20:37:30,112 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-21 20:37:30,112 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 105 transitions, 971 flow [2024-06-21 20:37:30,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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) [2024-06-21 20:37:30,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:30,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:30,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 20:37:30,112 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)] === [2024-06-21 20:37:30,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:30,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1813461604, now seen corresponding path program 4 times [2024-06-21 20:37:30,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:30,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547580398] [2024-06-21 20:37:30,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:30,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:30,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:30,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547580398] [2024-06-21 20:37:30,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547580398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:30,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:30,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:30,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563708338] [2024-06-21 20:37:30,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:30,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:30,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:30,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:30,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:30,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:30,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 105 transitions, 971 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) [2024-06-21 20:37:30,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:30,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:30,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:30,997 INFO L124 PetriNetUnfolderBase]: 312/570 cut-off events. [2024-06-21 20:37:30,997 INFO L125 PetriNetUnfolderBase]: For 16356/16356 co-relation queries the response was YES. [2024-06-21 20:37:30,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3758 conditions, 570 events. 312/570 cut-off events. For 16356/16356 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2415 event pairs, 56 based on Foata normal form. 2/567 useless extension candidates. Maximal degree in co-relation 3700. Up to 416 conditions per place. [2024-06-21 20:37:31,001 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 76 selfloop transitions, 40 changer transitions 0/119 dead transitions. [2024-06-21 20:37:31,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 119 transitions, 1347 flow [2024-06-21 20:37:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:31,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:31,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-21 20:37:31,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:37:31,002 INFO L175 Difference]: Start difference. First operand has 120 places, 105 transitions, 971 flow. Second operand 8 states and 104 transitions. [2024-06-21 20:37:31,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 119 transitions, 1347 flow [2024-06-21 20:37:31,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 1292 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 20:37:31,019 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1069 flow [2024-06-21 20:37:31,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1069, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-06-21 20:37:31,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-21 20:37:31,020 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1069 flow [2024-06-21 20:37:31,020 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) [2024-06-21 20:37:31,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:31,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:31,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 20:37:31,020 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)] === [2024-06-21 20:37:31,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1813461821, now seen corresponding path program 5 times [2024-06-21 20:37:31,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:31,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404901710] [2024-06-21 20:37:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:31,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:31,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:31,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404901710] [2024-06-21 20:37:31,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404901710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:31,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:31,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:31,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206182242] [2024-06-21 20:37:31,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:31,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:31,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:31,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:31,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:31,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:31,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1069 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) [2024-06-21 20:37:31,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:31,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:31,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:31,989 INFO L124 PetriNetUnfolderBase]: 310/566 cut-off events. [2024-06-21 20:37:31,989 INFO L125 PetriNetUnfolderBase]: For 16861/16861 co-relation queries the response was YES. [2024-06-21 20:37:31,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 566 events. 310/566 cut-off events. For 16861/16861 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2384 event pairs, 53 based on Foata normal form. 1/563 useless extension candidates. Maximal degree in co-relation 3754. Up to 477 conditions per place. [2024-06-21 20:37:31,993 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 81 selfloop transitions, 32 changer transitions 0/116 dead transitions. [2024-06-21 20:37:31,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 116 transitions, 1311 flow [2024-06-21 20:37:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:31,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:31,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-21 20:37:31,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-21 20:37:31,994 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1069 flow. Second operand 8 states and 99 transitions. [2024-06-21 20:37:31,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 116 transitions, 1311 flow [2024-06-21 20:37:32,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 116 transitions, 1245 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-21 20:37:32,012 INFO L231 Difference]: Finished difference. Result has 126 places, 109 transitions, 1072 flow [2024-06-21 20:37:32,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1072, PETRI_PLACES=126, PETRI_TRANSITIONS=109} [2024-06-21 20:37:32,013 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-21 20:37:32,013 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 109 transitions, 1072 flow [2024-06-21 20:37:32,013 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) [2024-06-21 20:37:32,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:32,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:32,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 20:37:32,013 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)] === [2024-06-21 20:37:32,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:32,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1822666031, now seen corresponding path program 6 times [2024-06-21 20:37:32,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:32,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21996991] [2024-06-21 20:37:32,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:32,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:32,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:32,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21996991] [2024-06-21 20:37:32,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21996991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:32,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:32,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:32,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109408758] [2024-06-21 20:37:32,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:32,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:32,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:32,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:32,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:32,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:32,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 109 transitions, 1072 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) [2024-06-21 20:37:32,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:32,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:32,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:32,934 INFO L124 PetriNetUnfolderBase]: 308/563 cut-off events. [2024-06-21 20:37:32,934 INFO L125 PetriNetUnfolderBase]: For 17137/17137 co-relation queries the response was YES. [2024-06-21 20:37:32,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3778 conditions, 563 events. 308/563 cut-off events. For 17137/17137 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2372 event pairs, 53 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 3717. Up to 439 conditions per place. [2024-06-21 20:37:32,939 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 46 changer transitions 0/118 dead transitions. [2024-06-21 20:37:32,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 118 transitions, 1350 flow [2024-06-21 20:37:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:32,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-21 20:37:32,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-21 20:37:32,945 INFO L175 Difference]: Start difference. First operand has 126 places, 109 transitions, 1072 flow. Second operand 8 states and 101 transitions. [2024-06-21 20:37:32,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 118 transitions, 1350 flow [2024-06-21 20:37:32,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 118 transitions, 1279 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:32,966 INFO L231 Difference]: Finished difference. Result has 127 places, 111 transitions, 1134 flow [2024-06-21 20:37:32,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1134, PETRI_PLACES=127, PETRI_TRANSITIONS=111} [2024-06-21 20:37:32,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-21 20:37:32,966 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 111 transitions, 1134 flow [2024-06-21 20:37:32,967 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) [2024-06-21 20:37:32,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:32,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:32,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 20:37:32,967 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)] === [2024-06-21 20:37:32,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:32,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1822666310, now seen corresponding path program 3 times [2024-06-21 20:37:32,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:32,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64696503] [2024-06-21 20:37:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64696503] [2024-06-21 20:37:33,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64696503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:33,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:33,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860459842] [2024-06-21 20:37:33,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:33,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:33,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:33,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:33,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:37:33,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 111 transitions, 1134 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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) [2024-06-21 20:37:33,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:33,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:37:33,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:34,034 INFO L124 PetriNetUnfolderBase]: 294/553 cut-off events. [2024-06-21 20:37:34,034 INFO L125 PetriNetUnfolderBase]: For 18495/18495 co-relation queries the response was YES. [2024-06-21 20:37:34,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 553 events. 294/553 cut-off events. For 18495/18495 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2413 event pairs, 49 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 3692. Up to 416 conditions per place. [2024-06-21 20:37:34,038 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 75 selfloop transitions, 31 changer transitions 0/126 dead transitions. [2024-06-21 20:37:34,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 126 transitions, 1488 flow [2024-06-21 20:37:34,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-21 20:37:34,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-21 20:37:34,039 INFO L175 Difference]: Start difference. First operand has 127 places, 111 transitions, 1134 flow. Second operand 8 states and 111 transitions. [2024-06-21 20:37:34,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 126 transitions, 1488 flow [2024-06-21 20:37:34,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 1371 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 20:37:34,062 INFO L231 Difference]: Finished difference. Result has 129 places, 115 transitions, 1140 flow [2024-06-21 20:37:34,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1140, PETRI_PLACES=129, PETRI_TRANSITIONS=115} [2024-06-21 20:37:34,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-21 20:37:34,063 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 115 transitions, 1140 flow [2024-06-21 20:37:34,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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) [2024-06-21 20:37:34,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:34,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:34,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 20:37:34,063 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)] === [2024-06-21 20:37:34,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:34,064 INFO L85 PathProgramCache]: Analyzing trace with hash -524211370, now seen corresponding path program 4 times [2024-06-21 20:37:34,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:34,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857052438] [2024-06-21 20:37:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:34,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:34,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:34,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857052438] [2024-06-21 20:37:34,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857052438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:34,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:34,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:34,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567877339] [2024-06-21 20:37:34,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:34,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:34,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:34,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:35,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:37:35,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 115 transitions, 1140 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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) [2024-06-21 20:37:35,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:35,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:37:35,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:35,225 INFO L124 PetriNetUnfolderBase]: 292/549 cut-off events. [2024-06-21 20:37:35,225 INFO L125 PetriNetUnfolderBase]: For 18713/18713 co-relation queries the response was YES. [2024-06-21 20:37:35,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3682 conditions, 549 events. 292/549 cut-off events. For 18713/18713 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2390 event pairs, 54 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 3619. Up to 465 conditions per place. [2024-06-21 20:37:35,229 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 89 selfloop transitions, 14 changer transitions 0/123 dead transitions. [2024-06-21 20:37:35,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 123 transitions, 1366 flow [2024-06-21 20:37:35,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:37:35,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:37:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-21 20:37:35,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:37:35,230 INFO L175 Difference]: Start difference. First operand has 129 places, 115 transitions, 1140 flow. Second operand 8 states and 104 transitions. [2024-06-21 20:37:35,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 123 transitions, 1366 flow [2024-06-21 20:37:35,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 123 transitions, 1291 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-21 20:37:35,252 INFO L231 Difference]: Finished difference. Result has 133 places, 115 transitions, 1099 flow [2024-06-21 20:37:35,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1099, PETRI_PLACES=133, PETRI_TRANSITIONS=115} [2024-06-21 20:37:35,253 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-21 20:37:35,253 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 115 transitions, 1099 flow [2024-06-21 20:37:35,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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) [2024-06-21 20:37:35,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:35,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:35,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 20:37:35,253 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)] === [2024-06-21 20:37:35,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:35,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1699002998, now seen corresponding path program 5 times [2024-06-21 20:37:35,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:35,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690368816] [2024-06-21 20:37:35,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:35,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:35,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:35,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690368816] [2024-06-21 20:37:35,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690368816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:35,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:35,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:35,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534278415] [2024-06-21 20:37:35,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:35,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:35,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:35,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:35,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 115 transitions, 1099 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) [2024-06-21 20:37:35,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:35,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:35,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:36,019 INFO L124 PetriNetUnfolderBase]: 320/587 cut-off events. [2024-06-21 20:37:36,020 INFO L125 PetriNetUnfolderBase]: For 20014/20014 co-relation queries the response was YES. [2024-06-21 20:37:36,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3941 conditions, 587 events. 320/587 cut-off events. For 20014/20014 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2530 event pairs, 47 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 3876. Up to 503 conditions per place. [2024-06-21 20:37:36,023 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 105 selfloop transitions, 27 changer transitions 0/135 dead transitions. [2024-06-21 20:37:36,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 135 transitions, 1455 flow [2024-06-21 20:37:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 20:37:36,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 20:37:36,024 INFO L175 Difference]: Start difference. First operand has 133 places, 115 transitions, 1099 flow. Second operand 9 states and 116 transitions. [2024-06-21 20:37:36,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 135 transitions, 1455 flow [2024-06-21 20:37:36,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 135 transitions, 1422 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:36,048 INFO L231 Difference]: Finished difference. Result has 135 places, 119 transitions, 1177 flow [2024-06-21 20:37:36,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1177, PETRI_PLACES=135, PETRI_TRANSITIONS=119} [2024-06-21 20:37:36,048 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-21 20:37:36,048 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 119 transitions, 1177 flow [2024-06-21 20:37:36,048 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) [2024-06-21 20:37:36,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:36,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:36,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 20:37:36,049 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)] === [2024-06-21 20:37:36,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:36,049 INFO L85 PathProgramCache]: Analyzing trace with hash -422165434, now seen corresponding path program 6 times [2024-06-21 20:37:36,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:36,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686738788] [2024-06-21 20:37:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:36,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:36,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:36,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686738788] [2024-06-21 20:37:36,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686738788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:36,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:36,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:36,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28216005] [2024-06-21 20:37:36,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:36,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:36,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:36,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:36,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:36,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:36,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 119 transitions, 1177 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) [2024-06-21 20:37:36,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:36,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:36,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:36,869 INFO L124 PetriNetUnfolderBase]: 330/606 cut-off events. [2024-06-21 20:37:36,869 INFO L125 PetriNetUnfolderBase]: For 21544/21544 co-relation queries the response was YES. [2024-06-21 20:37:36,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4138 conditions, 606 events. 330/606 cut-off events. For 21544/21544 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2649 event pairs, 47 based on Foata normal form. 2/606 useless extension candidates. Maximal degree in co-relation 4072. Up to 518 conditions per place. [2024-06-21 20:37:36,873 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 27 changer transitions 0/138 dead transitions. [2024-06-21 20:37:36,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 138 transitions, 1545 flow [2024-06-21 20:37:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:36,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 20:37:36,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 20:37:36,874 INFO L175 Difference]: Start difference. First operand has 135 places, 119 transitions, 1177 flow. Second operand 9 states and 116 transitions. [2024-06-21 20:37:36,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 138 transitions, 1545 flow [2024-06-21 20:37:36,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 138 transitions, 1465 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:36,902 INFO L231 Difference]: Finished difference. Result has 137 places, 123 transitions, 1216 flow [2024-06-21 20:37:36,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1216, PETRI_PLACES=137, PETRI_TRANSITIONS=123} [2024-06-21 20:37:36,903 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-21 20:37:36,903 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 123 transitions, 1216 flow [2024-06-21 20:37:36,903 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) [2024-06-21 20:37:36,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:36,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:36,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 20:37:36,903 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)] === [2024-06-21 20:37:36,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1445215110, now seen corresponding path program 7 times [2024-06-21 20:37:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:36,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331009265] [2024-06-21 20:37:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:36,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:37,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:37,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331009265] [2024-06-21 20:37:37,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331009265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:37,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:37,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:37,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116365336] [2024-06-21 20:37:37,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:37,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:37,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:37,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:37,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:37,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:37,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 123 transitions, 1216 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) [2024-06-21 20:37:37,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:37,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:37,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:37,810 INFO L124 PetriNetUnfolderBase]: 326/600 cut-off events. [2024-06-21 20:37:37,810 INFO L125 PetriNetUnfolderBase]: For 21431/21431 co-relation queries the response was YES. [2024-06-21 20:37:37,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4031 conditions, 600 events. 326/600 cut-off events. For 21431/21431 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2612 event pairs, 45 based on Foata normal form. 2/600 useless extension candidates. Maximal degree in co-relation 3965. Up to 512 conditions per place. [2024-06-21 20:37:37,814 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 26 changer transitions 0/137 dead transitions. [2024-06-21 20:37:37,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 137 transitions, 1524 flow [2024-06-21 20:37:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:37,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 20:37:37,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 20:37:37,816 INFO L175 Difference]: Start difference. First operand has 137 places, 123 transitions, 1216 flow. Second operand 9 states and 116 transitions. [2024-06-21 20:37:37,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 137 transitions, 1524 flow [2024-06-21 20:37:37,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 1454 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-21 20:37:37,849 INFO L231 Difference]: Finished difference. Result has 141 places, 123 transitions, 1203 flow [2024-06-21 20:37:37,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1203, PETRI_PLACES=141, PETRI_TRANSITIONS=123} [2024-06-21 20:37:37,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-21 20:37:37,850 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 123 transitions, 1203 flow [2024-06-21 20:37:37,850 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) [2024-06-21 20:37:37,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:37,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:37,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 20:37:37,850 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)] === [2024-06-21 20:37:37,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1450929030, now seen corresponding path program 8 times [2024-06-21 20:37:37,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:37,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481201927] [2024-06-21 20:37:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:37,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:38,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:38,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481201927] [2024-06-21 20:37:38,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481201927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:38,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:38,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:37:38,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358261124] [2024-06-21 20:37:38,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:38,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:37:38,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:38,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:37:38,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:37:38,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:38,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 123 transitions, 1203 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) [2024-06-21 20:37:38,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:38,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:38,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:38,697 INFO L124 PetriNetUnfolderBase]: 322/595 cut-off events. [2024-06-21 20:37:38,697 INFO L125 PetriNetUnfolderBase]: For 21108/21108 co-relation queries the response was YES. [2024-06-21 20:37:38,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3911 conditions, 595 events. 322/595 cut-off events. For 21108/21108 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2580 event pairs, 48 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 3844. Up to 468 conditions per place. [2024-06-21 20:37:38,701 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 38 changer transitions 0/136 dead transitions. [2024-06-21 20:37:38,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 136 transitions, 1505 flow [2024-06-21 20:37:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:38,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:38,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 20:37:38,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:37:38,702 INFO L175 Difference]: Start difference. First operand has 141 places, 123 transitions, 1203 flow. Second operand 9 states and 117 transitions. [2024-06-21 20:37:38,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 136 transitions, 1505 flow [2024-06-21 20:37:38,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 136 transitions, 1409 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:38,746 INFO L231 Difference]: Finished difference. Result has 143 places, 123 transitions, 1188 flow [2024-06-21 20:37:38,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1188, PETRI_PLACES=143, PETRI_TRANSITIONS=123} [2024-06-21 20:37:38,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-21 20:37:38,746 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 123 transitions, 1188 flow [2024-06-21 20:37:38,746 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) [2024-06-21 20:37:38,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:38,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:38,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 20:37:38,747 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)] === [2024-06-21 20:37:38,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:38,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1823004644, now seen corresponding path program 1 times [2024-06-21 20:37:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:38,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507992221] [2024-06-21 20:37:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:38,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:40,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:40,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507992221] [2024-06-21 20:37:40,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507992221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:40,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:40,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:40,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065705746] [2024-06-21 20:37:40,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:40,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:40,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:40,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:40,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:40,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:37:40,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 123 transitions, 1188 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:37:40,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:40,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:37:40,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:40,347 INFO L124 PetriNetUnfolderBase]: 300/566 cut-off events. [2024-06-21 20:37:40,348 INFO L125 PetriNetUnfolderBase]: For 20443/20445 co-relation queries the response was YES. [2024-06-21 20:37:40,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3659 conditions, 566 events. 300/566 cut-off events. For 20443/20445 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2517 event pairs, 55 based on Foata normal form. 4/562 useless extension candidates. Maximal degree in co-relation 3591. Up to 480 conditions per place. [2024-06-21 20:37:40,351 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 98 selfloop transitions, 14 changer transitions 0/132 dead transitions. [2024-06-21 20:37:40,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 132 transitions, 1432 flow [2024-06-21 20:37:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:40,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-21 20:37:40,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 20:37:40,361 INFO L175 Difference]: Start difference. First operand has 143 places, 123 transitions, 1188 flow. Second operand 9 states and 112 transitions. [2024-06-21 20:37:40,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 132 transitions, 1432 flow [2024-06-21 20:37:40,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 132 transitions, 1268 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-21 20:37:40,389 INFO L231 Difference]: Finished difference. Result has 142 places, 123 transitions, 1056 flow [2024-06-21 20:37:40,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1056, PETRI_PLACES=142, PETRI_TRANSITIONS=123} [2024-06-21 20:37:40,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-21 20:37:40,390 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 123 transitions, 1056 flow [2024-06-21 20:37:40,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:37:40,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:40,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:40,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 20:37:40,391 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)] === [2024-06-21 20:37:40,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:40,391 INFO L85 PathProgramCache]: Analyzing trace with hash 874229954, now seen corresponding path program 1 times [2024-06-21 20:37:40,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:40,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160358092] [2024-06-21 20:37:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:40,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:41,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:41,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160358092] [2024-06-21 20:37:41,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160358092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:41,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:41,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:41,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972520142] [2024-06-21 20:37:41,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:41,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:41,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:41,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:41,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:41,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:41,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 123 transitions, 1056 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) [2024-06-21 20:37:41,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:41,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:41,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:41,646 INFO L124 PetriNetUnfolderBase]: 317/586 cut-off events. [2024-06-21 20:37:41,646 INFO L125 PetriNetUnfolderBase]: For 19903/19903 co-relation queries the response was YES. [2024-06-21 20:37:41,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3613 conditions, 586 events. 317/586 cut-off events. For 19903/19903 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2550 event pairs, 44 based on Foata normal form. 1/585 useless extension candidates. Maximal degree in co-relation 3547. Up to 483 conditions per place. [2024-06-21 20:37:41,649 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 109 selfloop transitions, 30 changer transitions 0/142 dead transitions. [2024-06-21 20:37:41,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 142 transitions, 1412 flow [2024-06-21 20:37:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:41,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 20:37:41,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:37:41,650 INFO L175 Difference]: Start difference. First operand has 142 places, 123 transitions, 1056 flow. Second operand 9 states and 117 transitions. [2024-06-21 20:37:41,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 142 transitions, 1412 flow [2024-06-21 20:37:41,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 142 transitions, 1374 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:41,675 INFO L231 Difference]: Finished difference. Result has 144 places, 125 transitions, 1119 flow [2024-06-21 20:37:41,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1119, PETRI_PLACES=144, PETRI_TRANSITIONS=125} [2024-06-21 20:37:41,675 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-21 20:37:41,675 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 125 transitions, 1119 flow [2024-06-21 20:37:41,675 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) [2024-06-21 20:37:41,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:41,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:41,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 20:37:41,676 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)] === [2024-06-21 20:37:41,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:41,676 INFO L85 PathProgramCache]: Analyzing trace with hash 874350110, now seen corresponding path program 1 times [2024-06-21 20:37:41,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:41,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133618361] [2024-06-21 20:37:41,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:41,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:42,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:42,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133618361] [2024-06-21 20:37:42,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133618361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:42,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:42,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:42,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086912471] [2024-06-21 20:37:42,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:42,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:42,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:42,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:42,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:42,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:42,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 125 transitions, 1119 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) [2024-06-21 20:37:42,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:42,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:42,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:42,732 INFO L124 PetriNetUnfolderBase]: 323/596 cut-off events. [2024-06-21 20:37:42,732 INFO L125 PetriNetUnfolderBase]: For 21760/21760 co-relation queries the response was YES. [2024-06-21 20:37:42,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3753 conditions, 596 events. 323/596 cut-off events. For 21760/21760 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2603 event pairs, 41 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 3686. Up to 472 conditions per place. [2024-06-21 20:37:42,735 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 37 changer transitions 0/143 dead transitions. [2024-06-21 20:37:42,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 143 transitions, 1471 flow [2024-06-21 20:37:42,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 20:37:42,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 20:37:42,738 INFO L175 Difference]: Start difference. First operand has 144 places, 125 transitions, 1119 flow. Second operand 9 states and 116 transitions. [2024-06-21 20:37:42,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 143 transitions, 1471 flow [2024-06-21 20:37:42,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 143 transitions, 1386 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:42,763 INFO L231 Difference]: Finished difference. Result has 146 places, 128 transitions, 1155 flow [2024-06-21 20:37:42,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1155, PETRI_PLACES=146, PETRI_TRANSITIONS=128} [2024-06-21 20:37:42,763 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-21 20:37:42,764 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 128 transitions, 1155 flow [2024-06-21 20:37:42,764 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) [2024-06-21 20:37:42,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:42,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:42,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 20:37:42,764 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)] === [2024-06-21 20:37:42,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:42,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1190549490, now seen corresponding path program 2 times [2024-06-21 20:37:42,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:42,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882584306] [2024-06-21 20:37:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:42,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:43,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:43,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882584306] [2024-06-21 20:37:43,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882584306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:43,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:43,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:43,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952338013] [2024-06-21 20:37:43,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:43,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:43,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:43,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:43,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 128 transitions, 1155 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) [2024-06-21 20:37:43,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:43,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:43,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:43,855 INFO L124 PetriNetUnfolderBase]: 329/606 cut-off events. [2024-06-21 20:37:43,855 INFO L125 PetriNetUnfolderBase]: For 23248/23248 co-relation queries the response was YES. [2024-06-21 20:37:43,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 606 events. 329/606 cut-off events. For 23248/23248 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2671 event pairs, 41 based on Foata normal form. 2/606 useless extension candidates. Maximal degree in co-relation 3845. Up to 467 conditions per place. [2024-06-21 20:37:43,859 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 43 changer transitions 0/145 dead transitions. [2024-06-21 20:37:43,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 145 transitions, 1519 flow [2024-06-21 20:37:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 20:37:43,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 20:37:43,860 INFO L175 Difference]: Start difference. First operand has 146 places, 128 transitions, 1155 flow. Second operand 9 states and 116 transitions. [2024-06-21 20:37:43,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 145 transitions, 1519 flow [2024-06-21 20:37:43,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 145 transitions, 1426 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:43,889 INFO L231 Difference]: Finished difference. Result has 148 places, 131 transitions, 1199 flow [2024-06-21 20:37:43,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1199, PETRI_PLACES=148, PETRI_TRANSITIONS=131} [2024-06-21 20:37:43,889 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-21 20:37:43,890 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 131 transitions, 1199 flow [2024-06-21 20:37:43,890 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) [2024-06-21 20:37:43,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:43,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:43,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 20:37:43,890 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)] === [2024-06-21 20:37:43,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:43,890 INFO L85 PathProgramCache]: Analyzing trace with hash 878998498, now seen corresponding path program 1 times [2024-06-21 20:37:43,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:43,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168173532] [2024-06-21 20:37:43,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:43,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:44,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:44,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168173532] [2024-06-21 20:37:44,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168173532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:44,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:44,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:44,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182875522] [2024-06-21 20:37:44,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:44,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:44,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:44,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:44,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:44,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:44,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 131 transitions, 1199 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) [2024-06-21 20:37:44,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:44,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:44,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:45,056 INFO L124 PetriNetUnfolderBase]: 332/611 cut-off events. [2024-06-21 20:37:45,056 INFO L125 PetriNetUnfolderBase]: For 23906/23906 co-relation queries the response was YES. [2024-06-21 20:37:45,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4029 conditions, 611 events. 332/611 cut-off events. For 23906/23906 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2707 event pairs, 43 based on Foata normal form. 1/610 useless extension candidates. Maximal degree in co-relation 3960. Up to 531 conditions per place. [2024-06-21 20:37:45,060 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 115 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-06-21 20:37:45,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 145 transitions, 1537 flow [2024-06-21 20:37:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:45,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 20:37:45,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 20:37:45,060 INFO L175 Difference]: Start difference. First operand has 148 places, 131 transitions, 1199 flow. Second operand 9 states and 111 transitions. [2024-06-21 20:37:45,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 145 transitions, 1537 flow [2024-06-21 20:37:45,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 145 transitions, 1424 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:45,091 INFO L231 Difference]: Finished difference. Result has 150 places, 133 transitions, 1173 flow [2024-06-21 20:37:45,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1173, PETRI_PLACES=150, PETRI_TRANSITIONS=133} [2024-06-21 20:37:45,091 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-21 20:37:45,091 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 133 transitions, 1173 flow [2024-06-21 20:37:45,091 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) [2024-06-21 20:37:45,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:45,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:45,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 20:37:45,092 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)] === [2024-06-21 20:37:45,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1190542980, now seen corresponding path program 3 times [2024-06-21 20:37:45,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:45,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928771040] [2024-06-21 20:37:45,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:45,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:45,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928771040] [2024-06-21 20:37:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928771040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:45,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:45,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:45,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364979783] [2024-06-21 20:37:45,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:45,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:45,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:45,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:45,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 133 transitions, 1173 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) [2024-06-21 20:37:45,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:45,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:45,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:46,156 INFO L124 PetriNetUnfolderBase]: 335/616 cut-off events. [2024-06-21 20:37:46,156 INFO L125 PetriNetUnfolderBase]: For 24736/24736 co-relation queries the response was YES. [2024-06-21 20:37:46,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4044 conditions, 616 events. 335/616 cut-off events. For 24736/24736 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2721 event pairs, 40 based on Foata normal form. 1/615 useless extension candidates. Maximal degree in co-relation 3974. Up to 449 conditions per place. [2024-06-21 20:37:46,160 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 47 changer transitions 0/148 dead transitions. [2024-06-21 20:37:46,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 148 transitions, 1529 flow [2024-06-21 20:37:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:46,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 20:37:46,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 20:37:46,161 INFO L175 Difference]: Start difference. First operand has 150 places, 133 transitions, 1173 flow. Second operand 9 states and 116 transitions. [2024-06-21 20:37:46,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 148 transitions, 1529 flow [2024-06-21 20:37:46,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 148 transitions, 1458 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:46,191 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 1233 flow [2024-06-21 20:37:46,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1233, PETRI_PLACES=152, PETRI_TRANSITIONS=135} [2024-06-21 20:37:46,192 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-21 20:37:46,192 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 1233 flow [2024-06-21 20:37:46,192 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) [2024-06-21 20:37:46,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:46,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:46,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 20:37:46,197 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)] === [2024-06-21 20:37:46,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:46,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1051481630, now seen corresponding path program 4 times [2024-06-21 20:37:46,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:46,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908314639] [2024-06-21 20:37:46,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:46,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:46,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:46,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908314639] [2024-06-21 20:37:46,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908314639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:46,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:46,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:46,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970567034] [2024-06-21 20:37:46,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:46,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:46,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:47,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:47,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 135 transitions, 1233 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) [2024-06-21 20:37:47,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:47,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:47,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:47,285 INFO L124 PetriNetUnfolderBase]: 341/626 cut-off events. [2024-06-21 20:37:47,285 INFO L125 PetriNetUnfolderBase]: For 27172/27172 co-relation queries the response was YES. [2024-06-21 20:37:47,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4243 conditions, 626 events. 341/626 cut-off events. For 27172/27172 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2773 event pairs, 44 based on Foata normal form. 2/626 useless extension candidates. Maximal degree in co-relation 4172. Up to 463 conditions per place. [2024-06-21 20:37:47,289 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 49 changer transitions 0/150 dead transitions. [2024-06-21 20:37:47,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 150 transitions, 1619 flow [2024-06-21 20:37:47,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:47,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-21 20:37:47,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-21 20:37:47,290 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 1233 flow. Second operand 9 states and 115 transitions. [2024-06-21 20:37:47,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 150 transitions, 1619 flow [2024-06-21 20:37:47,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 150 transitions, 1504 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:47,322 INFO L231 Difference]: Finished difference. Result has 154 places, 138 transitions, 1277 flow [2024-06-21 20:37:47,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1277, PETRI_PLACES=154, PETRI_TRANSITIONS=138} [2024-06-21 20:37:47,323 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-21 20:37:47,323 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 138 transitions, 1277 flow [2024-06-21 20:37:47,323 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) [2024-06-21 20:37:47,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:47,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:47,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 20:37:47,323 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)] === [2024-06-21 20:37:47,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:47,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1051488140, now seen corresponding path program 5 times [2024-06-21 20:37:47,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:47,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186275730] [2024-06-21 20:37:47,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:47,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:48,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186275730] [2024-06-21 20:37:48,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186275730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:48,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:48,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:48,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765551336] [2024-06-21 20:37:48,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:48,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:48,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:48,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:48,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:48,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:48,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 138 transitions, 1277 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) [2024-06-21 20:37:48,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:48,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:48,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:48,367 INFO L124 PetriNetUnfolderBase]: 344/631 cut-off events. [2024-06-21 20:37:48,367 INFO L125 PetriNetUnfolderBase]: For 27771/27771 co-relation queries the response was YES. [2024-06-21 20:37:48,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 631 events. 344/631 cut-off events. For 27771/27771 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2805 event pairs, 44 based on Foata normal form. 1/630 useless extension candidates. Maximal degree in co-relation 4292. Up to 460 conditions per place. [2024-06-21 20:37:48,371 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 51 changer transitions 0/152 dead transitions. [2024-06-21 20:37:48,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 152 transitions, 1659 flow [2024-06-21 20:37:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 20:37:48,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:37:48,372 INFO L175 Difference]: Start difference. First operand has 154 places, 138 transitions, 1277 flow. Second operand 9 states and 117 transitions. [2024-06-21 20:37:48,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 152 transitions, 1659 flow [2024-06-21 20:37:48,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 152 transitions, 1524 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:48,405 INFO L231 Difference]: Finished difference. Result has 156 places, 140 transitions, 1289 flow [2024-06-21 20:37:48,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1289, PETRI_PLACES=156, PETRI_TRANSITIONS=140} [2024-06-21 20:37:48,405 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-21 20:37:48,406 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 1289 flow [2024-06-21 20:37:48,406 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) [2024-06-21 20:37:48,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:48,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:48,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 20:37:48,406 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)] === [2024-06-21 20:37:48,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:48,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1051488388, now seen corresponding path program 2 times [2024-06-21 20:37:48,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:48,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350344295] [2024-06-21 20:37:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:48,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:49,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:49,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350344295] [2024-06-21 20:37:49,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350344295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:49,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:49,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:49,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415140892] [2024-06-21 20:37:49,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:49,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:49,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:49,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:49,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:49,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:49,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 1289 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) [2024-06-21 20:37:49,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:49,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:49,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:49,505 INFO L124 PetriNetUnfolderBase]: 347/636 cut-off events. [2024-06-21 20:37:49,505 INFO L125 PetriNetUnfolderBase]: For 29025/29025 co-relation queries the response was YES. [2024-06-21 20:37:49,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4426 conditions, 636 events. 347/636 cut-off events. For 29025/29025 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2833 event pairs, 42 based on Foata normal form. 1/635 useless extension candidates. Maximal degree in co-relation 4353. Up to 546 conditions per place. [2024-06-21 20:37:49,509 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 32 changer transitions 0/152 dead transitions. [2024-06-21 20:37:49,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 152 transitions, 1639 flow [2024-06-21 20:37:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:49,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:49,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 20:37:49,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-21 20:37:49,514 INFO L175 Difference]: Start difference. First operand has 156 places, 140 transitions, 1289 flow. Second operand 9 states and 110 transitions. [2024-06-21 20:37:49,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 152 transitions, 1639 flow [2024-06-21 20:37:49,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 152 transitions, 1508 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:49,552 INFO L231 Difference]: Finished difference. Result has 158 places, 142 transitions, 1259 flow [2024-06-21 20:37:49,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1259, PETRI_PLACES=158, PETRI_TRANSITIONS=142} [2024-06-21 20:37:49,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-21 20:37:49,553 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 142 transitions, 1259 flow [2024-06-21 20:37:49,553 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) [2024-06-21 20:37:49,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:49,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:49,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 20:37:49,553 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)] === [2024-06-21 20:37:49,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:49,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1051727398, now seen corresponding path program 3 times [2024-06-21 20:37:49,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:49,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177816934] [2024-06-21 20:37:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:49,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:50,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:50,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177816934] [2024-06-21 20:37:50,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177816934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:50,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:50,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:50,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292438321] [2024-06-21 20:37:50,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:50,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:50,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:50,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:50,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:50,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:50,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 142 transitions, 1259 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) [2024-06-21 20:37:50,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:50,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:50,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:50,570 INFO L124 PetriNetUnfolderBase]: 363/662 cut-off events. [2024-06-21 20:37:50,570 INFO L125 PetriNetUnfolderBase]: For 33333/33333 co-relation queries the response was YES. [2024-06-21 20:37:50,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4694 conditions, 662 events. 363/662 cut-off events. For 33333/33333 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2979 event pairs, 41 based on Foata normal form. 2/662 useless extension candidates. Maximal degree in co-relation 4620. Up to 527 conditions per place. [2024-06-21 20:37:50,574 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 115 selfloop transitions, 41 changer transitions 0/159 dead transitions. [2024-06-21 20:37:50,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 159 transitions, 1771 flow [2024-06-21 20:37:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-21 20:37:50,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-21 20:37:50,575 INFO L175 Difference]: Start difference. First operand has 158 places, 142 transitions, 1259 flow. Second operand 9 states and 115 transitions. [2024-06-21 20:37:50,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 159 transitions, 1771 flow [2024-06-21 20:37:50,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 159 transitions, 1686 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:50,628 INFO L231 Difference]: Finished difference. Result has 160 places, 146 transitions, 1333 flow [2024-06-21 20:37:50,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1333, PETRI_PLACES=160, PETRI_TRANSITIONS=146} [2024-06-21 20:37:50,629 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-21 20:37:50,629 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 146 transitions, 1333 flow [2024-06-21 20:37:50,629 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) [2024-06-21 20:37:50,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:50,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:50,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 20:37:50,629 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)] === [2024-06-21 20:37:50,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:50,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1051719028, now seen corresponding path program 4 times [2024-06-21 20:37:50,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:50,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597969848] [2024-06-21 20:37:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:50,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:51,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:51,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597969848] [2024-06-21 20:37:51,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597969848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:51,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:51,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:51,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859279224] [2024-06-21 20:37:51,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:51,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:51,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:51,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:51,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:51,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:51,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 146 transitions, 1333 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) [2024-06-21 20:37:51,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:51,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:51,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:51,644 INFO L124 PetriNetUnfolderBase]: 364/664 cut-off events. [2024-06-21 20:37:51,645 INFO L125 PetriNetUnfolderBase]: For 33707/33707 co-relation queries the response was YES. [2024-06-21 20:37:51,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4740 conditions, 664 events. 364/664 cut-off events. For 33707/33707 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2969 event pairs, 42 based on Foata normal form. 2/664 useless extension candidates. Maximal degree in co-relation 4665. Up to 530 conditions per place. [2024-06-21 20:37:51,649 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 41 changer transitions 0/162 dead transitions. [2024-06-21 20:37:51,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 162 transitions, 1831 flow [2024-06-21 20:37:51,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 20:37:51,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:37:51,650 INFO L175 Difference]: Start difference. First operand has 160 places, 146 transitions, 1333 flow. Second operand 9 states and 117 transitions. [2024-06-21 20:37:51,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 162 transitions, 1831 flow [2024-06-21 20:37:51,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 162 transitions, 1745 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-21 20:37:51,708 INFO L231 Difference]: Finished difference. Result has 164 places, 148 transitions, 1372 flow [2024-06-21 20:37:51,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1372, PETRI_PLACES=164, PETRI_TRANSITIONS=148} [2024-06-21 20:37:51,708 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-21 20:37:51,708 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 148 transitions, 1372 flow [2024-06-21 20:37:51,709 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) [2024-06-21 20:37:51,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:51,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:51,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 20:37:51,709 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)] === [2024-06-21 20:37:51,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:51,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1051718780, now seen corresponding path program 6 times [2024-06-21 20:37:51,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:51,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690706093] [2024-06-21 20:37:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:52,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:52,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690706093] [2024-06-21 20:37:52,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690706093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:52,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:52,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:52,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721929682] [2024-06-21 20:37:52,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:52,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:52,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:52,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:52,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:52,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:52,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 148 transitions, 1372 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) [2024-06-21 20:37:52,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:52,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:52,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:52,765 INFO L124 PetriNetUnfolderBase]: 367/669 cut-off events. [2024-06-21 20:37:52,765 INFO L125 PetriNetUnfolderBase]: For 33933/33933 co-relation queries the response was YES. [2024-06-21 20:37:52,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4819 conditions, 669 events. 367/669 cut-off events. For 33933/33933 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3008 event pairs, 47 based on Foata normal form. 1/668 useless extension candidates. Maximal degree in co-relation 4742. Up to 449 conditions per place. [2024-06-21 20:37:52,770 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 63 changer transitions 0/161 dead transitions. [2024-06-21 20:37:52,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 161 transitions, 1766 flow [2024-06-21 20:37:52,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 20:37:52,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 20:37:52,771 INFO L175 Difference]: Start difference. First operand has 164 places, 148 transitions, 1372 flow. Second operand 9 states and 116 transitions. [2024-06-21 20:37:52,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 161 transitions, 1766 flow [2024-06-21 20:37:52,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 161 transitions, 1683 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 20:37:52,830 INFO L231 Difference]: Finished difference. Result has 167 places, 150 transitions, 1464 flow [2024-06-21 20:37:52,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1464, PETRI_PLACES=167, PETRI_TRANSITIONS=150} [2024-06-21 20:37:52,831 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-21 20:37:52,831 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 150 transitions, 1464 flow [2024-06-21 20:37:52,831 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) [2024-06-21 20:37:52,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:52,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:52,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 20:37:52,831 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)] === [2024-06-21 20:37:52,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:52,831 INFO L85 PathProgramCache]: Analyzing trace with hash -811648042, now seen corresponding path program 5 times [2024-06-21 20:37:52,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:52,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597464993] [2024-06-21 20:37:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:52,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:53,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:53,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597464993] [2024-06-21 20:37:53,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597464993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:53,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:53,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:53,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010571563] [2024-06-21 20:37:53,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:53,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:53,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:53,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:53,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:53,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:53,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 150 transitions, 1464 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) [2024-06-21 20:37:53,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:53,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:53,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:53,936 INFO L124 PetriNetUnfolderBase]: 380/690 cut-off events. [2024-06-21 20:37:53,936 INFO L125 PetriNetUnfolderBase]: For 38169/38169 co-relation queries the response was YES. [2024-06-21 20:37:53,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5199 conditions, 690 events. 380/690 cut-off events. For 38169/38169 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3129 event pairs, 50 based on Foata normal form. 1/687 useless extension candidates. Maximal degree in co-relation 5121. Up to 576 conditions per place. [2024-06-21 20:37:53,941 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 124 selfloop transitions, 40 changer transitions 0/167 dead transitions. [2024-06-21 20:37:53,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 167 transitions, 2113 flow [2024-06-21 20:37:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:53,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-21 20:37:53,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-21 20:37:53,942 INFO L175 Difference]: Start difference. First operand has 167 places, 150 transitions, 1464 flow. Second operand 9 states and 115 transitions. [2024-06-21 20:37:53,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 167 transitions, 2113 flow [2024-06-21 20:37:54,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 167 transitions, 1954 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:54,005 INFO L231 Difference]: Finished difference. Result has 170 places, 157 transitions, 1510 flow [2024-06-21 20:37:54,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1510, PETRI_PLACES=170, PETRI_TRANSITIONS=157} [2024-06-21 20:37:54,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-21 20:37:54,006 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 157 transitions, 1510 flow [2024-06-21 20:37:54,006 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) [2024-06-21 20:37:54,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:54,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:54,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 20:37:54,007 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)] === [2024-06-21 20:37:54,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:54,007 INFO L85 PathProgramCache]: Analyzing trace with hash 382973052, now seen corresponding path program 7 times [2024-06-21 20:37:54,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:54,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042422628] [2024-06-21 20:37:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:54,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:54,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:54,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042422628] [2024-06-21 20:37:54,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042422628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:54,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:54,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:54,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468205827] [2024-06-21 20:37:54,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:54,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:54,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:54,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:54,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:54,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:54,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 157 transitions, 1510 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) [2024-06-21 20:37:54,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:54,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:54,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:55,084 INFO L124 PetriNetUnfolderBase]: 393/711 cut-off events. [2024-06-21 20:37:55,084 INFO L125 PetriNetUnfolderBase]: For 42698/42698 co-relation queries the response was YES. [2024-06-21 20:37:55,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5494 conditions, 711 events. 393/711 cut-off events. For 42698/42698 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3239 event pairs, 58 based on Foata normal form. 1/707 useless extension candidates. Maximal degree in co-relation 5414. Up to 521 conditions per place. [2024-06-21 20:37:55,089 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 56 changer transitions 0/173 dead transitions. [2024-06-21 20:37:55,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 173 transitions, 2106 flow [2024-06-21 20:37:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 20:37:55,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-21 20:37:55,090 INFO L175 Difference]: Start difference. First operand has 170 places, 157 transitions, 1510 flow. Second operand 9 states and 119 transitions. [2024-06-21 20:37:55,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 173 transitions, 2106 flow [2024-06-21 20:37:55,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 173 transitions, 2027 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-21 20:37:55,161 INFO L231 Difference]: Finished difference. Result has 176 places, 162 transitions, 1671 flow [2024-06-21 20:37:55,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1671, PETRI_PLACES=176, PETRI_TRANSITIONS=162} [2024-06-21 20:37:55,162 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-21 20:37:55,162 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 162 transitions, 1671 flow [2024-06-21 20:37:55,162 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) [2024-06-21 20:37:55,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:55,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:55,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 20:37:55,163 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)] === [2024-06-21 20:37:55,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1296108574, now seen corresponding path program 6 times [2024-06-21 20:37:55,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:55,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493777163] [2024-06-21 20:37:55,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:55,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:56,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:56,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493777163] [2024-06-21 20:37:56,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493777163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:56,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:56,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:56,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430183963] [2024-06-21 20:37:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:56,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:56,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:56,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:56,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:56,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 162 transitions, 1671 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) [2024-06-21 20:37:56,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:56,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:56,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:56,371 INFO L124 PetriNetUnfolderBase]: 399/721 cut-off events. [2024-06-21 20:37:56,371 INFO L125 PetriNetUnfolderBase]: For 46334/46334 co-relation queries the response was YES. [2024-06-21 20:37:56,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5809 conditions, 721 events. 399/721 cut-off events. For 46334/46334 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3275 event pairs, 61 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 5726. Up to 659 conditions per place. [2024-06-21 20:37:56,377 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 155 selfloop transitions, 16 changer transitions 0/174 dead transitions. [2024-06-21 20:37:56,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 174 transitions, 2091 flow [2024-06-21 20:37:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-21 20:37:56,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:37:56,378 INFO L175 Difference]: Start difference. First operand has 176 places, 162 transitions, 1671 flow. Second operand 9 states and 108 transitions. [2024-06-21 20:37:56,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 174 transitions, 2091 flow [2024-06-21 20:37:56,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 174 transitions, 1984 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-21 20:37:56,487 INFO L231 Difference]: Finished difference. Result has 180 places, 164 transitions, 1645 flow [2024-06-21 20:37:56,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1645, PETRI_PLACES=180, PETRI_TRANSITIONS=164} [2024-06-21 20:37:56,487 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-21 20:37:56,487 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 164 transitions, 1645 flow [2024-06-21 20:37:56,487 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) [2024-06-21 20:37:56,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:56,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:56,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 20:37:56,487 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)] === [2024-06-21 20:37:56,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:56,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1296405244, now seen corresponding path program 7 times [2024-06-21 20:37:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:56,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571172451] [2024-06-21 20:37:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:56,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:57,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:57,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571172451] [2024-06-21 20:37:57,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571172451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:57,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:57,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:57,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837607055] [2024-06-21 20:37:57,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:57,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:57,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:57,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:57,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:57,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:57,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 164 transitions, 1645 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) [2024-06-21 20:37:57,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:57,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:57,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:57,713 INFO L124 PetriNetUnfolderBase]: 402/726 cut-off events. [2024-06-21 20:37:57,713 INFO L125 PetriNetUnfolderBase]: For 46463/46463 co-relation queries the response was YES. [2024-06-21 20:37:57,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5880 conditions, 726 events. 402/726 cut-off events. For 46463/46463 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3326 event pairs, 48 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 5795. Up to 549 conditions per place. [2024-06-21 20:37:57,718 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 123 selfloop transitions, 60 changer transitions 0/186 dead transitions. [2024-06-21 20:37:57,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 186 transitions, 2409 flow [2024-06-21 20:37:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:57,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:57,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 20:37:57,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 20:37:57,719 INFO L175 Difference]: Start difference. First operand has 180 places, 164 transitions, 1645 flow. Second operand 9 states and 116 transitions. [2024-06-21 20:37:57,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 186 transitions, 2409 flow [2024-06-21 20:37:57,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 186 transitions, 2328 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-21 20:37:57,791 INFO L231 Difference]: Finished difference. Result has 185 places, 175 transitions, 1911 flow [2024-06-21 20:37:57,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1911, PETRI_PLACES=185, PETRI_TRANSITIONS=175} [2024-06-21 20:37:57,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-21 20:37:57,792 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 175 transitions, 1911 flow [2024-06-21 20:37:57,792 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) [2024-06-21 20:37:57,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:57,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:57,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 20:37:57,792 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)] === [2024-06-21 20:37:57,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:57,792 INFO L85 PathProgramCache]: Analyzing trace with hash 668072922, now seen corresponding path program 8 times [2024-06-21 20:37:57,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:57,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940035670] [2024-06-21 20:37:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:57,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:58,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:58,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940035670] [2024-06-21 20:37:58,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940035670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:58,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:58,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:58,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634817238] [2024-06-21 20:37:58,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:58,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:58,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:58,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:58,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:37:58,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:37:58,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 175 transitions, 1911 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) [2024-06-21 20:37:58,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:37:58,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:37:58,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:37:59,015 INFO L124 PetriNetUnfolderBase]: 400/723 cut-off events. [2024-06-21 20:37:59,015 INFO L125 PetriNetUnfolderBase]: For 47014/47014 co-relation queries the response was YES. [2024-06-21 20:37:59,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6003 conditions, 723 events. 400/723 cut-off events. For 47014/47014 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3303 event pairs, 55 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 5914. Up to 454 conditions per place. [2024-06-21 20:37:59,020 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 80 changer transitions 0/187 dead transitions. [2024-06-21 20:37:59,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 187 transitions, 2473 flow [2024-06-21 20:37:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:37:59,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:37:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 20:37:59,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:37:59,025 INFO L175 Difference]: Start difference. First operand has 185 places, 175 transitions, 1911 flow. Second operand 9 states and 117 transitions. [2024-06-21 20:37:59,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 187 transitions, 2473 flow [2024-06-21 20:37:59,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 187 transitions, 2380 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-21 20:37:59,102 INFO L231 Difference]: Finished difference. Result has 191 places, 177 transitions, 2037 flow [2024-06-21 20:37:59,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2037, PETRI_PLACES=191, PETRI_TRANSITIONS=177} [2024-06-21 20:37:59,103 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-21 20:37:59,103 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 177 transitions, 2037 flow [2024-06-21 20:37:59,103 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) [2024-06-21 20:37:59,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:37:59,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:37:59,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 20:37:59,103 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)] === [2024-06-21 20:37:59,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:37:59,104 INFO L85 PathProgramCache]: Analyzing trace with hash 382981670, now seen corresponding path program 8 times [2024-06-21 20:37:59,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:37:59,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27687371] [2024-06-21 20:37:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:37:59,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:37:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:37:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:37:59,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:37:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27687371] [2024-06-21 20:37:59,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27687371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:37:59,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:37:59,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:37:59,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465420338] [2024-06-21 20:37:59,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:37:59,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:37:59,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:37:59,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:37:59,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:38:00,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:00,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 177 transitions, 2037 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) [2024-06-21 20:38:00,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:00,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:00,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:00,237 INFO L124 PetriNetUnfolderBase]: 398/720 cut-off events. [2024-06-21 20:38:00,238 INFO L125 PetriNetUnfolderBase]: For 47346/47346 co-relation queries the response was YES. [2024-06-21 20:38:00,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 720 events. 398/720 cut-off events. For 47346/47346 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3289 event pairs, 50 based on Foata normal form. 1/717 useless extension candidates. Maximal degree in co-relation 6016. Up to 607 conditions per place. [2024-06-21 20:38:00,243 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 142 selfloop transitions, 41 changer transitions 0/186 dead transitions. [2024-06-21 20:38:00,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 186 transitions, 2529 flow [2024-06-21 20:38:00,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:38:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:38:00,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-21 20:38:00,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-21 20:38:00,245 INFO L175 Difference]: Start difference. First operand has 191 places, 177 transitions, 2037 flow. Second operand 9 states and 113 transitions. [2024-06-21 20:38:00,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 186 transitions, 2529 flow [2024-06-21 20:38:00,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 186 transitions, 2302 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-21 20:38:00,328 INFO L231 Difference]: Finished difference. Result has 193 places, 177 transitions, 1897 flow [2024-06-21 20:38:00,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1897, PETRI_PLACES=193, PETRI_TRANSITIONS=177} [2024-06-21 20:38:00,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-21 20:38:00,329 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 177 transitions, 1897 flow [2024-06-21 20:38:00,329 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) [2024-06-21 20:38:00,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:00,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:00,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 20:38:00,329 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)] === [2024-06-21 20:38:00,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:00,329 INFO L85 PathProgramCache]: Analyzing trace with hash 668081540, now seen corresponding path program 9 times [2024-06-21 20:38:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:00,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682986216] [2024-06-21 20:38:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:00,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:01,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:01,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682986216] [2024-06-21 20:38:01,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682986216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:01,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:01,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:38:01,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343686841] [2024-06-21 20:38:01,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:01,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:38:01,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:01,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:38:01,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:38:01,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:01,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 177 transitions, 1897 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) [2024-06-21 20:38:01,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:01,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:01,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:01,511 INFO L124 PetriNetUnfolderBase]: 396/717 cut-off events. [2024-06-21 20:38:01,511 INFO L125 PetriNetUnfolderBase]: For 47039/47039 co-relation queries the response was YES. [2024-06-21 20:38:01,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5894 conditions, 717 events. 396/717 cut-off events. For 47039/47039 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3256 event pairs, 48 based on Foata normal form. 1/714 useless extension candidates. Maximal degree in co-relation 5802. Up to 542 conditions per place. [2024-06-21 20:38:01,516 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 61 changer transitions 0/189 dead transitions. [2024-06-21 20:38:01,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 189 transitions, 2422 flow [2024-06-21 20:38:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:38:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:38:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 20:38:01,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 20:38:01,517 INFO L175 Difference]: Start difference. First operand has 193 places, 177 transitions, 1897 flow. Second operand 9 states and 116 transitions. [2024-06-21 20:38:01,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 189 transitions, 2422 flow [2024-06-21 20:38:01,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 189 transitions, 2307 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-21 20:38:01,604 INFO L231 Difference]: Finished difference. Result has 195 places, 179 transitions, 1925 flow [2024-06-21 20:38:01,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1925, PETRI_PLACES=195, PETRI_TRANSITIONS=179} [2024-06-21 20:38:01,604 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-21 20:38:01,604 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 179 transitions, 1925 flow [2024-06-21 20:38:01,605 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) [2024-06-21 20:38:01,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:01,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:01,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 20:38:01,605 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)] === [2024-06-21 20:38:01,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:01,605 INFO L85 PathProgramCache]: Analyzing trace with hash 382735902, now seen corresponding path program 9 times [2024-06-21 20:38:01,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:01,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467496576] [2024-06-21 20:38:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:01,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:02,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:02,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467496576] [2024-06-21 20:38:02,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467496576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:02,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:02,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:38:02,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39725029] [2024-06-21 20:38:02,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:02,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:38:02,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:02,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:38:02,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:38:02,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:02,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 179 transitions, 1925 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) [2024-06-21 20:38:02,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:02,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:02,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:02,672 INFO L124 PetriNetUnfolderBase]: 397/719 cut-off events. [2024-06-21 20:38:02,672 INFO L125 PetriNetUnfolderBase]: For 48748/48748 co-relation queries the response was YES. [2024-06-21 20:38:02,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5891 conditions, 719 events. 397/719 cut-off events. For 48748/48748 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3285 event pairs, 55 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 5798. Up to 545 conditions per place. [2024-06-21 20:38:02,678 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 51 changer transitions 0/191 dead transitions. [2024-06-21 20:38:02,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 191 transitions, 2409 flow [2024-06-21 20:38:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:38:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:38:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-21 20:38:02,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 20:38:02,679 INFO L175 Difference]: Start difference. First operand has 195 places, 179 transitions, 1925 flow. Second operand 9 states and 114 transitions. [2024-06-21 20:38:02,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 191 transitions, 2409 flow [2024-06-21 20:38:02,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 191 transitions, 2296 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 20:38:02,752 INFO L231 Difference]: Finished difference. Result has 199 places, 181 transitions, 1970 flow [2024-06-21 20:38:02,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1970, PETRI_PLACES=199, PETRI_TRANSITIONS=181} [2024-06-21 20:38:02,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-21 20:38:02,753 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 181 transitions, 1970 flow [2024-06-21 20:38:02,753 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) [2024-06-21 20:38:02,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:02,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:02,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 20:38:02,753 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)] === [2024-06-21 20:38:02,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:02,753 INFO L85 PathProgramCache]: Analyzing trace with hash 382742660, now seen corresponding path program 10 times [2024-06-21 20:38:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:02,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964715705] [2024-06-21 20:38:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:02,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:03,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964715705] [2024-06-21 20:38:03,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964715705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:03,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:03,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:38:03,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241652830] [2024-06-21 20:38:03,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:03,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:38:03,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:38:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:38:03,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:03,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 181 transitions, 1970 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) [2024-06-21 20:38:03,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:03,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:03,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:03,808 INFO L124 PetriNetUnfolderBase]: 398/721 cut-off events. [2024-06-21 20:38:03,808 INFO L125 PetriNetUnfolderBase]: For 48901/48901 co-relation queries the response was YES. [2024-06-21 20:38:03,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5899 conditions, 721 events. 398/721 cut-off events. For 48901/48901 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3308 event pairs, 50 based on Foata normal form. 2/719 useless extension candidates. Maximal degree in co-relation 5805. Up to 621 conditions per place. [2024-06-21 20:38:03,813 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 35 changer transitions 0/192 dead transitions. [2024-06-21 20:38:03,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 192 transitions, 2425 flow [2024-06-21 20:38:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:38:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:38:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 20:38:03,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-21 20:38:03,814 INFO L175 Difference]: Start difference. First operand has 199 places, 181 transitions, 1970 flow. Second operand 9 states and 110 transitions. [2024-06-21 20:38:03,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 192 transitions, 2425 flow [2024-06-21 20:38:03,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 192 transitions, 2249 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-21 20:38:03,889 INFO L231 Difference]: Finished difference. Result has 201 places, 183 transitions, 1924 flow [2024-06-21 20:38:03,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1924, PETRI_PLACES=201, PETRI_TRANSITIONS=183} [2024-06-21 20:38:03,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-21 20:38:03,890 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 183 transitions, 1924 flow [2024-06-21 20:38:03,890 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) [2024-06-21 20:38:03,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:03,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:03,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 20:38:03,891 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)] === [2024-06-21 20:38:03,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:03,891 INFO L85 PathProgramCache]: Analyzing trace with hash 920746364, now seen corresponding path program 10 times [2024-06-21 20:38:03,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:03,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609461704] [2024-06-21 20:38:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:03,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:04,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:04,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609461704] [2024-06-21 20:38:04,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609461704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:04,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:04,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:38:04,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955494561] [2024-06-21 20:38:04,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:04,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:38:04,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:04,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:38:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:38:04,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:04,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 183 transitions, 1924 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) [2024-06-21 20:38:04,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:04,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:04,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:04,978 INFO L124 PetriNetUnfolderBase]: 396/718 cut-off events. [2024-06-21 20:38:04,978 INFO L125 PetriNetUnfolderBase]: For 46638/46638 co-relation queries the response was YES. [2024-06-21 20:38:04,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5720 conditions, 718 events. 396/718 cut-off events. For 46638/46638 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3302 event pairs, 55 based on Foata normal form. 1/714 useless extension candidates. Maximal degree in co-relation 5625. Up to 538 conditions per place. [2024-06-21 20:38:04,999 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 54 changer transitions 0/193 dead transitions. [2024-06-21 20:38:04,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 193 transitions, 2366 flow [2024-06-21 20:38:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:38:05,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:38:05,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 20:38:05,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 20:38:05,001 INFO L175 Difference]: Start difference. First operand has 201 places, 183 transitions, 1924 flow. Second operand 9 states and 116 transitions. [2024-06-21 20:38:05,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 193 transitions, 2366 flow [2024-06-21 20:38:05,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 193 transitions, 2232 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-21 20:38:05,099 INFO L231 Difference]: Finished difference. Result has 203 places, 183 transitions, 1903 flow [2024-06-21 20:38:05,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1903, PETRI_PLACES=203, PETRI_TRANSITIONS=183} [2024-06-21 20:38:05,099 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-21 20:38:05,099 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 183 transitions, 1903 flow [2024-06-21 20:38:05,099 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) [2024-06-21 20:38:05,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:05,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:05,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 20:38:05,100 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)] === [2024-06-21 20:38:05,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:05,100 INFO L85 PathProgramCache]: Analyzing trace with hash 837572578, now seen corresponding path program 1 times [2024-06-21 20:38:05,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:05,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529915510] [2024-06-21 20:38:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:05,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:06,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:06,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529915510] [2024-06-21 20:38:06,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529915510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:06,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:06,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:06,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297489982] [2024-06-21 20:38:06,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:06,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:06,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:06,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:06,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:06,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:06,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 183 transitions, 1903 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) [2024-06-21 20:38:06,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:06,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:06,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:06,596 INFO L124 PetriNetUnfolderBase]: 399/725 cut-off events. [2024-06-21 20:38:06,596 INFO L125 PetriNetUnfolderBase]: For 48136/48136 co-relation queries the response was YES. [2024-06-21 20:38:06,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5805 conditions, 725 events. 399/725 cut-off events. For 48136/48136 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3341 event pairs, 43 based on Foata normal form. 1/724 useless extension candidates. Maximal degree in co-relation 5709. Up to 617 conditions per place. [2024-06-21 20:38:06,602 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 168 selfloop transitions, 32 changer transitions 0/203 dead transitions. [2024-06-21 20:38:06,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 203 transitions, 2403 flow [2024-06-21 20:38:06,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:06,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:06,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 20:38:06,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 20:38:06,603 INFO L175 Difference]: Start difference. First operand has 203 places, 183 transitions, 1903 flow. Second operand 10 states and 127 transitions. [2024-06-21 20:38:06,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 203 transitions, 2403 flow [2024-06-21 20:38:06,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 203 transitions, 2277 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:06,701 INFO L231 Difference]: Finished difference. Result has 205 places, 185 transitions, 1902 flow [2024-06-21 20:38:06,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1902, PETRI_PLACES=205, PETRI_TRANSITIONS=185} [2024-06-21 20:38:06,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-21 20:38:06,701 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 185 transitions, 1902 flow [2024-06-21 20:38:06,702 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) [2024-06-21 20:38:06,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:06,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:06,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 20:38:06,702 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)] === [2024-06-21 20:38:06,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:06,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1835507427, now seen corresponding path program 1 times [2024-06-21 20:38:06,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:06,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145861241] [2024-06-21 20:38:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:06,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:07,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:07,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145861241] [2024-06-21 20:38:07,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145861241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:07,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:07,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:07,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952012483] [2024-06-21 20:38:07,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:07,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:07,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:07,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:07,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:07,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 185 transitions, 1902 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) [2024-06-21 20:38:07,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:07,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:07,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:07,883 INFO L124 PetriNetUnfolderBase]: 405/735 cut-off events. [2024-06-21 20:38:07,883 INFO L125 PetriNetUnfolderBase]: For 51480/51480 co-relation queries the response was YES. [2024-06-21 20:38:07,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5866 conditions, 735 events. 405/735 cut-off events. For 51480/51480 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3387 event pairs, 40 based on Foata normal form. 2/735 useless extension candidates. Maximal degree in co-relation 5769. Up to 603 conditions per place. [2024-06-21 20:38:07,888 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 40 changer transitions 0/204 dead transitions. [2024-06-21 20:38:07,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 204 transitions, 2418 flow [2024-06-21 20:38:07,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:07,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 20:38:07,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 20:38:07,889 INFO L175 Difference]: Start difference. First operand has 205 places, 185 transitions, 1902 flow. Second operand 10 states and 127 transitions. [2024-06-21 20:38:07,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 204 transitions, 2418 flow [2024-06-21 20:38:07,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 204 transitions, 2309 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:07,995 INFO L231 Difference]: Finished difference. Result has 207 places, 188 transitions, 1939 flow [2024-06-21 20:38:07,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1939, PETRI_PLACES=207, PETRI_TRANSITIONS=188} [2024-06-21 20:38:07,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-21 20:38:07,996 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 188 transitions, 1939 flow [2024-06-21 20:38:07,996 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) [2024-06-21 20:38:07,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:07,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:07,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 20:38:07,996 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)] === [2024-06-21 20:38:07,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:07,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1603781784, now seen corresponding path program 2 times [2024-06-21 20:38:07,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:07,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265727101] [2024-06-21 20:38:07,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:07,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:09,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:09,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265727101] [2024-06-21 20:38:09,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265727101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:09,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:09,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:09,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318110897] [2024-06-21 20:38:09,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:09,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:09,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:09,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:09,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:09,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:09,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 188 transitions, 1939 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) [2024-06-21 20:38:09,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:09,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:09,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:09,510 INFO L124 PetriNetUnfolderBase]: 408/742 cut-off events. [2024-06-21 20:38:09,511 INFO L125 PetriNetUnfolderBase]: For 52259/52259 co-relation queries the response was YES. [2024-06-21 20:38:09,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 742 events. 408/742 cut-off events. For 52259/52259 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3448 event pairs, 40 based on Foata normal form. 1/741 useless extension candidates. Maximal degree in co-relation 5906. Up to 611 conditions per place. [2024-06-21 20:38:09,517 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 39 changer transitions 0/206 dead transitions. [2024-06-21 20:38:09,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 206 transitions, 2465 flow [2024-06-21 20:38:09,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:09,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:38:09,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 20:38:09,518 INFO L175 Difference]: Start difference. First operand has 207 places, 188 transitions, 1939 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:38:09,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 206 transitions, 2465 flow [2024-06-21 20:38:09,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 206 transitions, 2341 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:09,622 INFO L231 Difference]: Finished difference. Result has 209 places, 190 transitions, 1960 flow [2024-06-21 20:38:09,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1960, PETRI_PLACES=209, PETRI_TRANSITIONS=190} [2024-06-21 20:38:09,623 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-21 20:38:09,623 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 190 transitions, 1960 flow [2024-06-21 20:38:09,623 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) [2024-06-21 20:38:09,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:09,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:09,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 20:38:09,624 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)] === [2024-06-21 20:38:09,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1747672314, now seen corresponding path program 3 times [2024-06-21 20:38:09,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:09,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834517106] [2024-06-21 20:38:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:09,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:10,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:10,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834517106] [2024-06-21 20:38:10,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834517106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:10,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:10,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:10,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171242960] [2024-06-21 20:38:10,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:10,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:10,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:10,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:10,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:10,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:10,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 190 transitions, 1960 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) [2024-06-21 20:38:10,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:10,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:10,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:10,977 INFO L124 PetriNetUnfolderBase]: 411/749 cut-off events. [2024-06-21 20:38:10,978 INFO L125 PetriNetUnfolderBase]: For 54454/54454 co-relation queries the response was YES. [2024-06-21 20:38:10,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6074 conditions, 749 events. 411/749 cut-off events. For 54454/54454 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3489 event pairs, 40 based on Foata normal form. 1/748 useless extension candidates. Maximal degree in co-relation 5975. Up to 601 conditions per place. [2024-06-21 20:38:10,988 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 45 changer transitions 0/207 dead transitions. [2024-06-21 20:38:10,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 207 transitions, 2510 flow [2024-06-21 20:38:10,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:38:10,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 20:38:10,989 INFO L175 Difference]: Start difference. First operand has 209 places, 190 transitions, 1960 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:38:10,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 207 transitions, 2510 flow [2024-06-21 20:38:11,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 207 transitions, 2381 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:11,100 INFO L231 Difference]: Finished difference. Result has 211 places, 192 transitions, 1992 flow [2024-06-21 20:38:11,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1992, PETRI_PLACES=211, PETRI_TRANSITIONS=192} [2024-06-21 20:38:11,101 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-21 20:38:11,101 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 192 transitions, 1992 flow [2024-06-21 20:38:11,101 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) [2024-06-21 20:38:11,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:11,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:11,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 20:38:11,101 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)] === [2024-06-21 20:38:11,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:11,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1478941221, now seen corresponding path program 2 times [2024-06-21 20:38:11,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:11,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913241109] [2024-06-21 20:38:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:11,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:11,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:11,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913241109] [2024-06-21 20:38:11,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913241109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:11,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:11,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:11,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489592203] [2024-06-21 20:38:11,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:11,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:11,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:11,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:11,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:11,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:11,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 192 transitions, 1992 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) [2024-06-21 20:38:11,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:11,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:11,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:12,309 INFO L124 PetriNetUnfolderBase]: 417/759 cut-off events. [2024-06-21 20:38:12,310 INFO L125 PetriNetUnfolderBase]: For 58136/58136 co-relation queries the response was YES. [2024-06-21 20:38:12,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6179 conditions, 759 events. 417/759 cut-off events. For 58136/58136 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3569 event pairs, 40 based on Foata normal form. 2/759 useless extension candidates. Maximal degree in co-relation 6079. Up to 608 conditions per place. [2024-06-21 20:38:12,316 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 46 changer transitions 0/210 dead transitions. [2024-06-21 20:38:12,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 210 transitions, 2550 flow [2024-06-21 20:38:12,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 20:38:12,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 20:38:12,318 INFO L175 Difference]: Start difference. First operand has 211 places, 192 transitions, 1992 flow. Second operand 10 states and 127 transitions. [2024-06-21 20:38:12,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 210 transitions, 2550 flow [2024-06-21 20:38:12,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 210 transitions, 2405 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:12,425 INFO L231 Difference]: Finished difference. Result has 213 places, 195 transitions, 2015 flow [2024-06-21 20:38:12,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2015, PETRI_PLACES=213, PETRI_TRANSITIONS=195} [2024-06-21 20:38:12,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-21 20:38:12,426 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 195 transitions, 2015 flow [2024-06-21 20:38:12,426 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) [2024-06-21 20:38:12,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:12,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:12,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 20:38:12,427 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)] === [2024-06-21 20:38:12,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1747874341, now seen corresponding path program 3 times [2024-06-21 20:38:12,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:12,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823103624] [2024-06-21 20:38:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:12,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:13,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:13,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823103624] [2024-06-21 20:38:13,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823103624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:13,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:13,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:13,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24355481] [2024-06-21 20:38:13,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:13,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:13,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:13,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:13,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:13,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:13,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 195 transitions, 2015 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) [2024-06-21 20:38:13,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:13,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:13,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:13,590 INFO L124 PetriNetUnfolderBase]: 448/809 cut-off events. [2024-06-21 20:38:13,590 INFO L125 PetriNetUnfolderBase]: For 69808/69808 co-relation queries the response was YES. [2024-06-21 20:38:13,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6982 conditions, 809 events. 448/809 cut-off events. For 69808/69808 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3836 event pairs, 39 based on Foata normal form. 2/809 useless extension candidates. Maximal degree in co-relation 6881. Up to 587 conditions per place. [2024-06-21 20:38:13,597 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 58 changer transitions 0/222 dead transitions. [2024-06-21 20:38:13,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 222 transitions, 2985 flow [2024-06-21 20:38:13,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:13,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:13,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 20:38:13,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 20:38:13,598 INFO L175 Difference]: Start difference. First operand has 213 places, 195 transitions, 2015 flow. Second operand 10 states and 133 transitions. [2024-06-21 20:38:13,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 222 transitions, 2985 flow [2024-06-21 20:38:13,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 222 transitions, 2839 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:13,749 INFO L231 Difference]: Finished difference. Result has 216 places, 205 transitions, 2242 flow [2024-06-21 20:38:13,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1869, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2242, PETRI_PLACES=216, PETRI_TRANSITIONS=205} [2024-06-21 20:38:13,750 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-21 20:38:13,750 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 205 transitions, 2242 flow [2024-06-21 20:38:13,750 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) [2024-06-21 20:38:13,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:13,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:13,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 20:38:13,751 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)] === [2024-06-21 20:38:13,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:13,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1747874124, now seen corresponding path program 4 times [2024-06-21 20:38:13,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:13,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679753514] [2024-06-21 20:38:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:13,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:14,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:14,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679753514] [2024-06-21 20:38:14,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679753514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:14,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:14,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:14,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893448724] [2024-06-21 20:38:14,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:14,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:14,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:14,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:14,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:14,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:14,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 205 transitions, 2242 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) [2024-06-21 20:38:14,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:14,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:14,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:15,372 INFO L124 PetriNetUnfolderBase]: 451/816 cut-off events. [2024-06-21 20:38:15,372 INFO L125 PetriNetUnfolderBase]: For 71150/71150 co-relation queries the response was YES. [2024-06-21 20:38:15,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7175 conditions, 816 events. 451/816 cut-off events. For 71150/71150 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3897 event pairs, 42 based on Foata normal form. 1/815 useless extension candidates. Maximal degree in co-relation 7072. Up to 632 conditions per place. [2024-06-21 20:38:15,380 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 51 changer transitions 0/220 dead transitions. [2024-06-21 20:38:15,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 220 transitions, 2778 flow [2024-06-21 20:38:15,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:38:15,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 20:38:15,380 INFO L175 Difference]: Start difference. First operand has 216 places, 205 transitions, 2242 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:38:15,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 220 transitions, 2778 flow [2024-06-21 20:38:15,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 220 transitions, 2657 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-21 20:38:15,561 INFO L231 Difference]: Finished difference. Result has 221 places, 207 transitions, 2302 flow [2024-06-21 20:38:15,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2302, PETRI_PLACES=221, PETRI_TRANSITIONS=207} [2024-06-21 20:38:15,562 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-21 20:38:15,562 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 207 transitions, 2302 flow [2024-06-21 20:38:15,562 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) [2024-06-21 20:38:15,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:15,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:15,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 20:38:15,562 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)] === [2024-06-21 20:38:15,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:15,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1747882060, now seen corresponding path program 1 times [2024-06-21 20:38:15,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:15,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646492592] [2024-06-21 20:38:15,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:15,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:16,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646492592] [2024-06-21 20:38:16,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646492592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:16,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:16,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:16,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137853867] [2024-06-21 20:38:16,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:16,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:16,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:16,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:16,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:16,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:16,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 207 transitions, 2302 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) [2024-06-21 20:38:16,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:16,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:16,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:17,028 INFO L124 PetriNetUnfolderBase]: 460/831 cut-off events. [2024-06-21 20:38:17,029 INFO L125 PetriNetUnfolderBase]: For 72137/72137 co-relation queries the response was YES. [2024-06-21 20:38:17,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7177 conditions, 831 events. 460/831 cut-off events. For 72137/72137 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3972 event pairs, 44 based on Foata normal form. 1/828 useless extension candidates. Maximal degree in co-relation 7073. Up to 750 conditions per place. [2024-06-21 20:38:17,036 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 196 selfloop transitions, 24 changer transitions 0/223 dead transitions. [2024-06-21 20:38:17,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 223 transitions, 2853 flow [2024-06-21 20:38:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:17,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-21 20:38:17,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:38:17,037 INFO L175 Difference]: Start difference. First operand has 221 places, 207 transitions, 2302 flow. Second operand 10 states and 120 transitions. [2024-06-21 20:38:17,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 223 transitions, 2853 flow [2024-06-21 20:38:17,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 223 transitions, 2684 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:17,188 INFO L231 Difference]: Finished difference. Result has 224 places, 212 transitions, 2278 flow [2024-06-21 20:38:17,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2137, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2278, PETRI_PLACES=224, PETRI_TRANSITIONS=212} [2024-06-21 20:38:17,189 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-21 20:38:17,189 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 212 transitions, 2278 flow [2024-06-21 20:38:17,189 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) [2024-06-21 20:38:17,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:17,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:17,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 20:38:17,189 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)] === [2024-06-21 20:38:17,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:17,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1747881781, now seen corresponding path program 4 times [2024-06-21 20:38:17,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:17,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092583163] [2024-06-21 20:38:17,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:17,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:18,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:18,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092583163] [2024-06-21 20:38:18,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092583163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:18,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:18,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:18,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521599273] [2024-06-21 20:38:18,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:18,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:18,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:18,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:18,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:18,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:18,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 212 transitions, 2278 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) [2024-06-21 20:38:18,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:18,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:18,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:18,430 INFO L124 PetriNetUnfolderBase]: 457/827 cut-off events. [2024-06-21 20:38:18,430 INFO L125 PetriNetUnfolderBase]: For 71098/71098 co-relation queries the response was YES. [2024-06-21 20:38:18,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6933 conditions, 827 events. 457/827 cut-off events. For 71098/71098 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3973 event pairs, 39 based on Foata normal form. 2/827 useless extension candidates. Maximal degree in co-relation 6827. Up to 593 conditions per place. [2024-06-21 20:38:18,438 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 64 changer transitions 0/228 dead transitions. [2024-06-21 20:38:18,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 228 transitions, 2922 flow [2024-06-21 20:38:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 20:38:18,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 20:38:18,441 INFO L175 Difference]: Start difference. First operand has 224 places, 212 transitions, 2278 flow. Second operand 10 states and 131 transitions. [2024-06-21 20:38:18,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 228 transitions, 2922 flow [2024-06-21 20:38:18,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 228 transitions, 2837 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-21 20:38:18,592 INFO L231 Difference]: Finished difference. Result has 227 places, 212 transitions, 2329 flow [2024-06-21 20:38:18,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2329, PETRI_PLACES=227, PETRI_TRANSITIONS=212} [2024-06-21 20:38:18,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-21 20:38:18,593 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 212 transitions, 2329 flow [2024-06-21 20:38:18,593 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) [2024-06-21 20:38:18,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:18,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:18,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 20:38:18,593 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)] === [2024-06-21 20:38:18,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1763806781, now seen corresponding path program 5 times [2024-06-21 20:38:18,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:18,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295298041] [2024-06-21 20:38:18,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:19,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:19,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295298041] [2024-06-21 20:38:19,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295298041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:19,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:19,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:19,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940717828] [2024-06-21 20:38:19,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:19,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:19,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:19,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:19,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:19,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:19,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 212 transitions, 2329 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) [2024-06-21 20:38:19,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:19,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:19,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:19,814 INFO L124 PetriNetUnfolderBase]: 463/837 cut-off events. [2024-06-21 20:38:19,815 INFO L125 PetriNetUnfolderBase]: For 74454/74454 co-relation queries the response was YES. [2024-06-21 20:38:19,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7121 conditions, 837 events. 463/837 cut-off events. For 74454/74454 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4019 event pairs, 43 based on Foata normal form. 2/837 useless extension candidates. Maximal degree in co-relation 7014. Up to 660 conditions per place. [2024-06-21 20:38:19,822 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 52 changer transitions 0/227 dead transitions. [2024-06-21 20:38:19,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 227 transitions, 2903 flow [2024-06-21 20:38:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:38:19,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 20:38:19,823 INFO L175 Difference]: Start difference. First operand has 227 places, 212 transitions, 2329 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:38:19,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 227 transitions, 2903 flow [2024-06-21 20:38:19,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 227 transitions, 2789 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:19,968 INFO L231 Difference]: Finished difference. Result has 229 places, 215 transitions, 2405 flow [2024-06-21 20:38:19,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2215, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2405, PETRI_PLACES=229, PETRI_TRANSITIONS=215} [2024-06-21 20:38:19,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-21 20:38:19,969 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 215 transitions, 2405 flow [2024-06-21 20:38:19,969 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) [2024-06-21 20:38:19,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:19,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:19,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 20:38:19,969 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)] === [2024-06-21 20:38:19,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:19,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1401878412, now seen corresponding path program 5 times [2024-06-21 20:38:19,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:19,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807166891] [2024-06-21 20:38:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:19,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:20,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:20,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807166891] [2024-06-21 20:38:20,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807166891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:20,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:20,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:20,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687783178] [2024-06-21 20:38:20,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:20,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:20,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:20,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:20,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:21,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:21,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 215 transitions, 2405 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) [2024-06-21 20:38:21,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:21,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:21,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:21,386 INFO L124 PetriNetUnfolderBase]: 466/844 cut-off events. [2024-06-21 20:38:21,387 INFO L125 PetriNetUnfolderBase]: For 75031/75031 co-relation queries the response was YES. [2024-06-21 20:38:21,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 844 events. 466/844 cut-off events. For 75031/75031 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4079 event pairs, 43 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 7154. Up to 668 conditions per place. [2024-06-21 20:38:21,394 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 51 changer transitions 0/229 dead transitions. [2024-06-21 20:38:21,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 229 transitions, 2987 flow [2024-06-21 20:38:21,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 20:38:21,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 20:38:21,395 INFO L175 Difference]: Start difference. First operand has 229 places, 215 transitions, 2405 flow. Second operand 10 states and 125 transitions. [2024-06-21 20:38:21,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 229 transitions, 2987 flow [2024-06-21 20:38:21,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 229 transitions, 2819 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:21,557 INFO L231 Difference]: Finished difference. Result has 231 places, 217 transitions, 2424 flow [2024-06-21 20:38:21,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2424, PETRI_PLACES=231, PETRI_TRANSITIONS=217} [2024-06-21 20:38:21,557 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-21 20:38:21,557 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 217 transitions, 2424 flow [2024-06-21 20:38:21,558 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) [2024-06-21 20:38:21,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:21,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:21,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 20:38:21,558 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)] === [2024-06-21 20:38:21,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:21,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1763605188, now seen corresponding path program 6 times [2024-06-21 20:38:21,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:21,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661646959] [2024-06-21 20:38:21,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:21,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:22,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:22,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:22,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661646959] [2024-06-21 20:38:22,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661646959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:22,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:22,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:22,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701556948] [2024-06-21 20:38:22,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:22,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:22,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:22,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:22,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:22,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:22,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 217 transitions, 2424 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) [2024-06-21 20:38:22,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:22,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:22,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:22,963 INFO L124 PetriNetUnfolderBase]: 469/851 cut-off events. [2024-06-21 20:38:22,963 INFO L125 PetriNetUnfolderBase]: For 77985/77985 co-relation queries the response was YES. [2024-06-21 20:38:22,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7329 conditions, 851 events. 469/851 cut-off events. For 77985/77985 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4128 event pairs, 43 based on Foata normal form. 1/850 useless extension candidates. Maximal degree in co-relation 7220. Up to 662 conditions per place. [2024-06-21 20:38:22,971 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 174 selfloop transitions, 54 changer transitions 0/231 dead transitions. [2024-06-21 20:38:22,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 231 transitions, 3014 flow [2024-06-21 20:38:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 20:38:22,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 20:38:22,973 INFO L175 Difference]: Start difference. First operand has 231 places, 217 transitions, 2424 flow. Second operand 10 states and 127 transitions. [2024-06-21 20:38:22,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 231 transitions, 3014 flow [2024-06-21 20:38:23,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 231 transitions, 2843 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:23,131 INFO L231 Difference]: Finished difference. Result has 233 places, 219 transitions, 2450 flow [2024-06-21 20:38:23,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2253, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2450, PETRI_PLACES=233, PETRI_TRANSITIONS=219} [2024-06-21 20:38:23,131 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-21 20:38:23,131 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 219 transitions, 2450 flow [2024-06-21 20:38:23,132 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) [2024-06-21 20:38:23,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:23,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:23,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 20:38:23,132 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)] === [2024-06-21 20:38:23,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:23,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1082296235, now seen corresponding path program 6 times [2024-06-21 20:38:23,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:23,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618929878] [2024-06-21 20:38:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:23,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:23,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:23,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618929878] [2024-06-21 20:38:23,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618929878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:23,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:23,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:23,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234771939] [2024-06-21 20:38:23,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:23,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:23,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:23,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:23,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:24,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:24,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 219 transitions, 2450 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) [2024-06-21 20:38:24,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:24,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:24,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:24,452 INFO L124 PetriNetUnfolderBase]: 495/893 cut-off events. [2024-06-21 20:38:24,452 INFO L125 PetriNetUnfolderBase]: For 92126/92126 co-relation queries the response was YES. [2024-06-21 20:38:24,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8037 conditions, 893 events. 495/893 cut-off events. For 92126/92126 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4352 event pairs, 44 based on Foata normal form. 2/893 useless extension candidates. Maximal degree in co-relation 7927. Up to 671 conditions per place. [2024-06-21 20:38:24,460 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 61 changer transitions 0/242 dead transitions. [2024-06-21 20:38:24,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 242 transitions, 3476 flow [2024-06-21 20:38:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:24,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 20:38:24,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-21 20:38:24,461 INFO L175 Difference]: Start difference. First operand has 233 places, 219 transitions, 2450 flow. Second operand 10 states and 134 transitions. [2024-06-21 20:38:24,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 242 transitions, 3476 flow [2024-06-21 20:38:24,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 242 transitions, 3295 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:24,622 INFO L231 Difference]: Finished difference. Result has 236 places, 227 transitions, 2625 flow [2024-06-21 20:38:24,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2625, PETRI_PLACES=236, PETRI_TRANSITIONS=227} [2024-06-21 20:38:24,623 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-21 20:38:24,623 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 227 transitions, 2625 flow [2024-06-21 20:38:24,623 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) [2024-06-21 20:38:24,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:24,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:24,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 20:38:24,623 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)] === [2024-06-21 20:38:24,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:24,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1487446991, now seen corresponding path program 1 times [2024-06-21 20:38:24,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:24,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136166479] [2024-06-21 20:38:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:24,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:25,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:25,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136166479] [2024-06-21 20:38:25,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136166479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:25,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:25,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:25,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194720442] [2024-06-21 20:38:25,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:25,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:25,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:25,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:25,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:26,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:38:26,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 227 transitions, 2625 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:38:26,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:26,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:38:26,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:26,421 INFO L124 PetriNetUnfolderBase]: 475/874 cut-off events. [2024-06-21 20:38:26,422 INFO L125 PetriNetUnfolderBase]: For 96329/96330 co-relation queries the response was YES. [2024-06-21 20:38:26,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7971 conditions, 874 events. 475/874 cut-off events. For 96329/96330 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4376 event pairs, 45 based on Foata normal form. 3/871 useless extension candidates. Maximal degree in co-relation 7859. Up to 716 conditions per place. [2024-06-21 20:38:26,428 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 182 selfloop transitions, 21 changer transitions 0/242 dead transitions. [2024-06-21 20:38:26,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 242 transitions, 3101 flow [2024-06-21 20:38:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 20:38:26,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 20:38:26,429 INFO L175 Difference]: Start difference. First operand has 236 places, 227 transitions, 2625 flow. Second operand 10 states and 127 transitions. [2024-06-21 20:38:26,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 242 transitions, 3101 flow [2024-06-21 20:38:26,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 242 transitions, 2959 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-21 20:38:26,596 INFO L231 Difference]: Finished difference. Result has 243 places, 230 transitions, 2578 flow [2024-06-21 20:38:26,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2483, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2578, PETRI_PLACES=243, PETRI_TRANSITIONS=230} [2024-06-21 20:38:26,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-21 20:38:26,597 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 230 transitions, 2578 flow [2024-06-21 20:38:26,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:38:26,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:26,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:26,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 20:38:26,597 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)] === [2024-06-21 20:38:26,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1074879485, now seen corresponding path program 7 times [2024-06-21 20:38:26,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:26,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522529856] [2024-06-21 20:38:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:26,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:27,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:27,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522529856] [2024-06-21 20:38:27,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522529856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:27,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:27,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:27,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296166503] [2024-06-21 20:38:27,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:27,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:27,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:27,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:27,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:27,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:27,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 230 transitions, 2578 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) [2024-06-21 20:38:27,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:27,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:27,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:27,843 INFO L124 PetriNetUnfolderBase]: 515/927 cut-off events. [2024-06-21 20:38:27,843 INFO L125 PetriNetUnfolderBase]: For 101204/101204 co-relation queries the response was YES. [2024-06-21 20:38:27,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8488 conditions, 927 events. 515/927 cut-off events. For 101204/101204 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4556 event pairs, 42 based on Foata normal form. 2/927 useless extension candidates. Maximal degree in co-relation 8373. Up to 556 conditions per place. [2024-06-21 20:38:27,852 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 150 selfloop transitions, 96 changer transitions 0/249 dead transitions. [2024-06-21 20:38:27,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 249 transitions, 3389 flow [2024-06-21 20:38:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 20:38:27,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 20:38:27,853 INFO L175 Difference]: Start difference. First operand has 243 places, 230 transitions, 2578 flow. Second operand 10 states and 133 transitions. [2024-06-21 20:38:27,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 249 transitions, 3389 flow [2024-06-21 20:38:28,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 249 transitions, 3325 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 20:38:28,038 INFO L231 Difference]: Finished difference. Result has 246 places, 234 transitions, 2816 flow [2024-06-21 20:38:28,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2816, PETRI_PLACES=246, PETRI_TRANSITIONS=234} [2024-06-21 20:38:28,038 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-21 20:38:28,038 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 234 transitions, 2816 flow [2024-06-21 20:38:28,038 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) [2024-06-21 20:38:28,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:28,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:28,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 20:38:28,039 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)] === [2024-06-21 20:38:28,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1494866221, now seen corresponding path program 8 times [2024-06-21 20:38:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:28,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284058747] [2024-06-21 20:38:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:28,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:28,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:28,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284058747] [2024-06-21 20:38:28,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284058747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:28,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:28,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:28,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301978257] [2024-06-21 20:38:28,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:28,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:28,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:28,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:28,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:28,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:28,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 234 transitions, 2816 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) [2024-06-21 20:38:28,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:28,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:28,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:29,325 INFO L124 PetriNetUnfolderBase]: 513/924 cut-off events. [2024-06-21 20:38:29,325 INFO L125 PetriNetUnfolderBase]: For 99888/99888 co-relation queries the response was YES. [2024-06-21 20:38:29,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8627 conditions, 924 events. 513/924 cut-off events. For 99888/99888 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4532 event pairs, 42 based on Foata normal form. 1/923 useless extension candidates. Maximal degree in co-relation 8511. Up to 726 conditions per place. [2024-06-21 20:38:29,333 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 59 changer transitions 0/249 dead transitions. [2024-06-21 20:38:29,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 249 transitions, 3407 flow [2024-06-21 20:38:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 20:38:29,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-21 20:38:29,334 INFO L175 Difference]: Start difference. First operand has 246 places, 234 transitions, 2816 flow. Second operand 10 states and 129 transitions. [2024-06-21 20:38:29,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 249 transitions, 3407 flow [2024-06-21 20:38:29,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 249 transitions, 3263 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-21 20:38:29,507 INFO L231 Difference]: Finished difference. Result has 251 places, 238 transitions, 2884 flow [2024-06-21 20:38:29,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2884, PETRI_PLACES=251, PETRI_TRANSITIONS=238} [2024-06-21 20:38:29,507 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-21 20:38:29,507 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 238 transitions, 2884 flow [2024-06-21 20:38:29,508 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) [2024-06-21 20:38:29,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:29,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:29,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 20:38:29,508 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)] === [2024-06-21 20:38:29,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:29,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1763597252, now seen corresponding path program 2 times [2024-06-21 20:38:29,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:29,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941715286] [2024-06-21 20:38:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:29,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:30,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:30,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941715286] [2024-06-21 20:38:30,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941715286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:30,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:30,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:30,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763257808] [2024-06-21 20:38:30,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:30,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:30,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:30,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:30,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:30,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:30,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 238 transitions, 2884 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) [2024-06-21 20:38:30,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:30,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:30,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:31,225 INFO L124 PetriNetUnfolderBase]: 511/921 cut-off events. [2024-06-21 20:38:31,225 INFO L125 PetriNetUnfolderBase]: For 98762/98762 co-relation queries the response was YES. [2024-06-21 20:38:31,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8553 conditions, 921 events. 511/921 cut-off events. For 98762/98762 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4526 event pairs, 40 based on Foata normal form. 1/920 useless extension candidates. Maximal degree in co-relation 8434. Up to 816 conditions per place. [2024-06-21 20:38:31,234 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 34 changer transitions 0/249 dead transitions. [2024-06-21 20:38:31,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 249 transitions, 3402 flow [2024-06-21 20:38:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:31,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:31,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-21 20:38:31,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:38:31,234 INFO L175 Difference]: Start difference. First operand has 251 places, 238 transitions, 2884 flow. Second operand 10 states and 120 transitions. [2024-06-21 20:38:31,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 249 transitions, 3402 flow [2024-06-21 20:38:31,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 249 transitions, 3286 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 20:38:31,428 INFO L231 Difference]: Finished difference. Result has 255 places, 238 transitions, 2841 flow [2024-06-21 20:38:31,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2768, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2841, PETRI_PLACES=255, PETRI_TRANSITIONS=238} [2024-06-21 20:38:31,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-21 20:38:31,429 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 238 transitions, 2841 flow [2024-06-21 20:38:31,429 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) [2024-06-21 20:38:31,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:31,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:31,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 20:38:31,429 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)] === [2024-06-21 20:38:31,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:31,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1756447691, now seen corresponding path program 9 times [2024-06-21 20:38:31,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:31,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801158106] [2024-06-21 20:38:31,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:31,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:32,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:32,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801158106] [2024-06-21 20:38:32,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801158106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:32,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:32,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:32,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980771018] [2024-06-21 20:38:32,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:32,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:32,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:32,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:32,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:32,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:32,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 238 transitions, 2841 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) [2024-06-21 20:38:32,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:32,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:32,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:32,703 INFO L124 PetriNetUnfolderBase]: 517/931 cut-off events. [2024-06-21 20:38:32,703 INFO L125 PetriNetUnfolderBase]: For 103780/103780 co-relation queries the response was YES. [2024-06-21 20:38:32,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8686 conditions, 931 events. 517/931 cut-off events. For 103780/103780 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4572 event pairs, 42 based on Foata normal form. 2/931 useless extension candidates. Maximal degree in co-relation 8565. Up to 560 conditions per place. [2024-06-21 20:38:32,713 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 163 selfloop transitions, 92 changer transitions 0/258 dead transitions. [2024-06-21 20:38:32,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 258 transitions, 3820 flow [2024-06-21 20:38:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:32,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 20:38:32,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 20:38:32,714 INFO L175 Difference]: Start difference. First operand has 255 places, 238 transitions, 2841 flow. Second operand 10 states and 136 transitions. [2024-06-21 20:38:32,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 258 transitions, 3820 flow [2024-06-21 20:38:32,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 258 transitions, 3729 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:32,928 INFO L231 Difference]: Finished difference. Result has 257 places, 240 transitions, 2992 flow [2024-06-21 20:38:32,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2750, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2992, PETRI_PLACES=257, PETRI_TRANSITIONS=240} [2024-06-21 20:38:32,928 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-21 20:38:32,928 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 240 transitions, 2992 flow [2024-06-21 20:38:32,928 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) [2024-06-21 20:38:32,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:32,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:32,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 20:38:32,929 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)] === [2024-06-21 20:38:32,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:32,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1756455348, now seen corresponding path program 7 times [2024-06-21 20:38:32,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:32,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371530792] [2024-06-21 20:38:32,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:32,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:33,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:33,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371530792] [2024-06-21 20:38:33,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371530792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:33,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:33,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:33,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924489735] [2024-06-21 20:38:33,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:33,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:33,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:33,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:33,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:33,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:33,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 240 transitions, 2992 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) [2024-06-21 20:38:33,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:33,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:33,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:34,305 INFO L124 PetriNetUnfolderBase]: 520/938 cut-off events. [2024-06-21 20:38:34,305 INFO L125 PetriNetUnfolderBase]: For 105655/105655 co-relation queries the response was YES. [2024-06-21 20:38:34,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8960 conditions, 938 events. 520/938 cut-off events. For 105655/105655 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4643 event pairs, 43 based on Foata normal form. 1/937 useless extension candidates. Maximal degree in co-relation 8838. Up to 683 conditions per place. [2024-06-21 20:38:34,313 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 71 changer transitions 0/253 dead transitions. [2024-06-21 20:38:34,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 253 transitions, 3604 flow [2024-06-21 20:38:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:38:34,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 20:38:34,314 INFO L175 Difference]: Start difference. First operand has 257 places, 240 transitions, 2992 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:38:34,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 253 transitions, 3604 flow [2024-06-21 20:38:34,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 253 transitions, 3309 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 20:38:34,541 INFO L231 Difference]: Finished difference. Result has 258 places, 242 transitions, 2934 flow [2024-06-21 20:38:34,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2934, PETRI_PLACES=258, PETRI_TRANSITIONS=242} [2024-06-21 20:38:34,542 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-21 20:38:34,542 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 242 transitions, 2934 flow [2024-06-21 20:38:34,542 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) [2024-06-21 20:38:34,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:34,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:34,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 20:38:34,542 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)] === [2024-06-21 20:38:34,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:34,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1756455131, now seen corresponding path program 10 times [2024-06-21 20:38:34,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:34,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924399132] [2024-06-21 20:38:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:34,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:35,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:35,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924399132] [2024-06-21 20:38:35,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924399132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:35,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:35,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:35,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563611906] [2024-06-21 20:38:35,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:35,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:35,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:35,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:35,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 242 transitions, 2934 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) [2024-06-21 20:38:35,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:35,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:35,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:35,873 INFO L124 PetriNetUnfolderBase]: 516/932 cut-off events. [2024-06-21 20:38:35,873 INFO L125 PetriNetUnfolderBase]: For 103882/103882 co-relation queries the response was YES. [2024-06-21 20:38:35,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8494 conditions, 932 events. 516/932 cut-off events. For 103882/103882 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4597 event pairs, 41 based on Foata normal form. 2/932 useless extension candidates. Maximal degree in co-relation 8373. Up to 562 conditions per place. [2024-06-21 20:38:35,882 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 160 selfloop transitions, 94 changer transitions 0/257 dead transitions. [2024-06-21 20:38:35,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 257 transitions, 3678 flow [2024-06-21 20:38:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:35,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 20:38:35,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-21 20:38:35,883 INFO L175 Difference]: Start difference. First operand has 258 places, 242 transitions, 2934 flow. Second operand 10 states and 134 transitions. [2024-06-21 20:38:35,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 257 transitions, 3678 flow [2024-06-21 20:38:36,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 257 transitions, 3431 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:36,153 INFO L231 Difference]: Finished difference. Result has 260 places, 242 transitions, 2880 flow [2024-06-21 20:38:36,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2687, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2880, PETRI_PLACES=260, PETRI_TRANSITIONS=242} [2024-06-21 20:38:36,153 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-21 20:38:36,154 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 242 transitions, 2880 flow [2024-06-21 20:38:36,154 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) [2024-06-21 20:38:36,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:36,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:36,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 20:38:36,154 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)] === [2024-06-21 20:38:36,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1012728500, now seen corresponding path program 3 times [2024-06-21 20:38:36,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:36,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588701573] [2024-06-21 20:38:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:36,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:37,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:37,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588701573] [2024-06-21 20:38:37,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588701573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:37,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:37,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:37,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71145837] [2024-06-21 20:38:37,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:37,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:37,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:37,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:37,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:37,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:37,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 242 transitions, 2880 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) [2024-06-21 20:38:37,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:37,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:37,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:37,900 INFO L124 PetriNetUnfolderBase]: 524/945 cut-off events. [2024-06-21 20:38:37,901 INFO L125 PetriNetUnfolderBase]: For 106682/106682 co-relation queries the response was YES. [2024-06-21 20:38:37,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8697 conditions, 945 events. 524/945 cut-off events. For 106682/106682 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4691 event pairs, 45 based on Foata normal form. 1/942 useless extension candidates. Maximal degree in co-relation 8575. Up to 804 conditions per place. [2024-06-21 20:38:37,909 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 46 changer transitions 0/256 dead transitions. [2024-06-21 20:38:37,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 256 transitions, 3664 flow [2024-06-21 20:38:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:37,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:38:37,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 20:38:37,910 INFO L175 Difference]: Start difference. First operand has 260 places, 242 transitions, 2880 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:38:37,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 256 transitions, 3664 flow [2024-06-21 20:38:38,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 256 transitions, 3470 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 20:38:38,211 INFO L231 Difference]: Finished difference. Result has 261 places, 246 transitions, 2887 flow [2024-06-21 20:38:38,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2686, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2887, PETRI_PLACES=261, PETRI_TRANSITIONS=246} [2024-06-21 20:38:38,212 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-21 20:38:38,212 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 246 transitions, 2887 flow [2024-06-21 20:38:38,212 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) [2024-06-21 20:38:38,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:38,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:38,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 20:38:38,213 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)] === [2024-06-21 20:38:38,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1012728779, now seen corresponding path program 11 times [2024-06-21 20:38:38,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:38,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409090751] [2024-06-21 20:38:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:38,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:39,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:39,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409090751] [2024-06-21 20:38:39,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409090751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:39,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:39,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:39,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835701655] [2024-06-21 20:38:39,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:39,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:39,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:39,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:39,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:39,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:39,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 246 transitions, 2887 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) [2024-06-21 20:38:39,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:39,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:39,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:39,563 INFO L124 PetriNetUnfolderBase]: 547/982 cut-off events. [2024-06-21 20:38:39,563 INFO L125 PetriNetUnfolderBase]: For 122523/122523 co-relation queries the response was YES. [2024-06-21 20:38:39,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9324 conditions, 982 events. 547/982 cut-off events. For 122523/122523 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4900 event pairs, 51 based on Foata normal form. 1/978 useless extension candidates. Maximal degree in co-relation 9201. Up to 744 conditions per place. [2024-06-21 20:38:39,573 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 198 selfloop transitions, 67 changer transitions 0/268 dead transitions. [2024-06-21 20:38:39,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 268 transitions, 4173 flow [2024-06-21 20:38:39,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:39,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 20:38:39,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 20:38:39,574 INFO L175 Difference]: Start difference. First operand has 261 places, 246 transitions, 2887 flow. Second operand 10 states and 135 transitions. [2024-06-21 20:38:39,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 268 transitions, 4173 flow [2024-06-21 20:38:39,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 268 transitions, 4065 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-21 20:38:39,890 INFO L231 Difference]: Finished difference. Result has 266 places, 256 transitions, 3194 flow [2024-06-21 20:38:39,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3194, PETRI_PLACES=266, PETRI_TRANSITIONS=256} [2024-06-21 20:38:39,891 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-21 20:38:39,891 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 256 transitions, 3194 flow [2024-06-21 20:38:39,891 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) [2024-06-21 20:38:39,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:39,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:39,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 20:38:39,891 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)] === [2024-06-21 20:38:39,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash -764567122, now seen corresponding path program 4 times [2024-06-21 20:38:39,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:39,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662841548] [2024-06-21 20:38:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:39,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:40,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:40,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662841548] [2024-06-21 20:38:40,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662841548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:40,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:40,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:40,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131686085] [2024-06-21 20:38:40,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:40,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:40,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:40,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:40,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:41,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:41,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 256 transitions, 3194 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) [2024-06-21 20:38:41,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:41,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:41,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:41,295 INFO L124 PetriNetUnfolderBase]: 550/987 cut-off events. [2024-06-21 20:38:41,295 INFO L125 PetriNetUnfolderBase]: For 126443/126443 co-relation queries the response was YES. [2024-06-21 20:38:41,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9585 conditions, 987 events. 550/987 cut-off events. For 126443/126443 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4935 event pairs, 45 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 9459. Up to 792 conditions per place. [2024-06-21 20:38:41,304 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 67 changer transitions 0/267 dead transitions. [2024-06-21 20:38:41,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 267 transitions, 3796 flow [2024-06-21 20:38:41,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 20:38:41,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 20:38:41,305 INFO L175 Difference]: Start difference. First operand has 266 places, 256 transitions, 3194 flow. Second operand 10 states and 124 transitions. [2024-06-21 20:38:41,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 267 transitions, 3796 flow [2024-06-21 20:38:41,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 267 transitions, 3653 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-21 20:38:41,623 INFO L231 Difference]: Finished difference. Result has 273 places, 258 transitions, 3248 flow [2024-06-21 20:38:41,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3248, PETRI_PLACES=273, PETRI_TRANSITIONS=258} [2024-06-21 20:38:41,623 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-21 20:38:41,623 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 258 transitions, 3248 flow [2024-06-21 20:38:41,623 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) [2024-06-21 20:38:41,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:41,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:41,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 20:38:41,623 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)] === [2024-06-21 20:38:41,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:41,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1012736436, now seen corresponding path program 8 times [2024-06-21 20:38:41,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:41,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025585853] [2024-06-21 20:38:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:41,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:42,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025585853] [2024-06-21 20:38:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025585853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:42,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:42,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086787252] [2024-06-21 20:38:42,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:42,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:42,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:42,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:42,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:42,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:42,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 258 transitions, 3248 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) [2024-06-21 20:38:42,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:42,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:42,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:43,146 INFO L124 PetriNetUnfolderBase]: 558/1004 cut-off events. [2024-06-21 20:38:43,146 INFO L125 PetriNetUnfolderBase]: For 134348/134348 co-relation queries the response was YES. [2024-06-21 20:38:43,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9998 conditions, 1004 events. 558/1004 cut-off events. For 134348/134348 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5075 event pairs, 50 based on Foata normal form. 1/1000 useless extension candidates. Maximal degree in co-relation 9870. Up to 788 conditions per place. [2024-06-21 20:38:43,156 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 60 changer transitions 0/272 dead transitions. [2024-06-21 20:38:43,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 272 transitions, 4154 flow [2024-06-21 20:38:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 20:38:43,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-21 20:38:43,157 INFO L175 Difference]: Start difference. First operand has 273 places, 258 transitions, 3248 flow. Second operand 10 states and 129 transitions. [2024-06-21 20:38:43,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 272 transitions, 4154 flow [2024-06-21 20:38:43,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 272 transitions, 3973 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:43,500 INFO L231 Difference]: Finished difference. Result has 275 places, 262 transitions, 3380 flow [2024-06-21 20:38:43,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3380, PETRI_PLACES=275, PETRI_TRANSITIONS=262} [2024-06-21 20:38:43,500 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-21 20:38:43,500 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 262 transitions, 3380 flow [2024-06-21 20:38:43,500 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) [2024-06-21 20:38:43,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:43,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:43,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 20:38:43,501 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)] === [2024-06-21 20:38:43,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:43,501 INFO L85 PathProgramCache]: Analyzing trace with hash 867272643, now seen corresponding path program 2 times [2024-06-21 20:38:43,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:43,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275304737] [2024-06-21 20:38:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:43,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:44,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:44,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275304737] [2024-06-21 20:38:44,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275304737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:44,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:44,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:44,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042510704] [2024-06-21 20:38:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:44,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:44,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:44,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:44,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:45,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:38:45,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 262 transitions, 3380 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:38:45,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:45,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:38:45,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:45,488 INFO L124 PetriNetUnfolderBase]: 535/983 cut-off events. [2024-06-21 20:38:45,488 INFO L125 PetriNetUnfolderBase]: For 142767/142768 co-relation queries the response was YES. [2024-06-21 20:38:45,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9871 conditions, 983 events. 535/983 cut-off events. For 142767/142768 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5096 event pairs, 52 based on Foata normal form. 3/978 useless extension candidates. Maximal degree in co-relation 9742. Up to 827 conditions per place. [2024-06-21 20:38:45,497 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 217 selfloop transitions, 16 changer transitions 0/275 dead transitions. [2024-06-21 20:38:45,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 275 transitions, 3904 flow [2024-06-21 20:38:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 20:38:45,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 20:38:45,497 INFO L175 Difference]: Start difference. First operand has 275 places, 262 transitions, 3380 flow. Second operand 10 states and 124 transitions. [2024-06-21 20:38:45,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 275 transitions, 3904 flow [2024-06-21 20:38:45,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 275 transitions, 3742 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-21 20:38:45,823 INFO L231 Difference]: Finished difference. Result has 280 places, 265 transitions, 3299 flow [2024-06-21 20:38:45,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3299, PETRI_PLACES=280, PETRI_TRANSITIONS=265} [2024-06-21 20:38:45,823 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-21 20:38:45,823 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 265 transitions, 3299 flow [2024-06-21 20:38:45,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:38:45,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:45,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:45,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 20:38:45,824 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)] === [2024-06-21 20:38:45,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:45,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1012736219, now seen corresponding path program 12 times [2024-06-21 20:38:45,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:45,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981959235] [2024-06-21 20:38:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:45,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:46,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:46,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981959235] [2024-06-21 20:38:46,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981959235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:46,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:46,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:46,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321380766] [2024-06-21 20:38:46,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:46,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:46,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:46,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:46,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:46,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:46,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 265 transitions, 3299 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) [2024-06-21 20:38:46,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:46,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:46,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:47,185 INFO L124 PetriNetUnfolderBase]: 563/1015 cut-off events. [2024-06-21 20:38:47,186 INFO L125 PetriNetUnfolderBase]: For 136098/136098 co-relation queries the response was YES. [2024-06-21 20:38:47,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9945 conditions, 1015 events. 563/1015 cut-off events. For 136098/136098 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5139 event pairs, 50 based on Foata normal form. 1/1010 useless extension candidates. Maximal degree in co-relation 9813. Up to 773 conditions per place. [2024-06-21 20:38:47,196 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 68 changer transitions 0/276 dead transitions. [2024-06-21 20:38:47,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 276 transitions, 4201 flow [2024-06-21 20:38:47,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 20:38:47,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 20:38:47,197 INFO L175 Difference]: Start difference. First operand has 280 places, 265 transitions, 3299 flow. Second operand 10 states and 133 transitions. [2024-06-21 20:38:47,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 276 transitions, 4201 flow [2024-06-21 20:38:47,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 276 transitions, 4121 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-21 20:38:47,534 INFO L231 Difference]: Finished difference. Result has 284 places, 265 transitions, 3360 flow [2024-06-21 20:38:47,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3360, PETRI_PLACES=284, PETRI_TRANSITIONS=265} [2024-06-21 20:38:47,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-21 20:38:47,534 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 265 transitions, 3360 flow [2024-06-21 20:38:47,535 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) [2024-06-21 20:38:47,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:47,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:47,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 20:38:47,535 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)] === [2024-06-21 20:38:47,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash 856876661, now seen corresponding path program 13 times [2024-06-21 20:38:47,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:47,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851811843] [2024-06-21 20:38:47,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:47,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:48,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:48,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851811843] [2024-06-21 20:38:48,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851811843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:48,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:48,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:48,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121355798] [2024-06-21 20:38:48,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:48,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:48,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:48,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:48,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:48,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:48,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 265 transitions, 3360 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) [2024-06-21 20:38:48,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:48,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:48,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:48,789 INFO L124 PetriNetUnfolderBase]: 589/1056 cut-off events. [2024-06-21 20:38:48,790 INFO L125 PetriNetUnfolderBase]: For 157298/157298 co-relation queries the response was YES. [2024-06-21 20:38:48,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10875 conditions, 1056 events. 589/1056 cut-off events. For 157298/157298 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5377 event pairs, 52 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 10742. Up to 482 conditions per place. [2024-06-21 20:38:48,802 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 130 changer transitions 0/291 dead transitions. [2024-06-21 20:38:48,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 291 transitions, 4838 flow [2024-06-21 20:38:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-21 20:38:48,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-21 20:38:48,803 INFO L175 Difference]: Start difference. First operand has 284 places, 265 transitions, 3360 flow. Second operand 10 states and 139 transitions. [2024-06-21 20:38:48,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 291 transitions, 4838 flow [2024-06-21 20:38:49,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 291 transitions, 4716 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 20:38:49,171 INFO L231 Difference]: Finished difference. Result has 288 places, 274 transitions, 3848 flow [2024-06-21 20:38:49,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3238, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3848, PETRI_PLACES=288, PETRI_TRANSITIONS=274} [2024-06-21 20:38:49,171 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-21 20:38:49,171 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 274 transitions, 3848 flow [2024-06-21 20:38:49,171 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) [2024-06-21 20:38:49,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:49,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:49,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 20:38:49,172 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)] === [2024-06-21 20:38:49,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash -764575058, now seen corresponding path program 9 times [2024-06-21 20:38:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:49,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381237663] [2024-06-21 20:38:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:49,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:50,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:50,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381237663] [2024-06-21 20:38:50,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381237663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:50,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:50,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369467916] [2024-06-21 20:38:50,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:50,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:50,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:50,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:50,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:50,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 274 transitions, 3848 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) [2024-06-21 20:38:50,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:50,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:50,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:50,644 INFO L124 PetriNetUnfolderBase]: 587/1053 cut-off events. [2024-06-21 20:38:50,644 INFO L125 PetriNetUnfolderBase]: For 156222/156222 co-relation queries the response was YES. [2024-06-21 20:38:50,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11153 conditions, 1053 events. 587/1053 cut-off events. For 156222/156222 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5367 event pairs, 52 based on Foata normal form. 1/1049 useless extension candidates. Maximal degree in co-relation 11018. Up to 734 conditions per place. [2024-06-21 20:38:50,655 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 92 changer transitions 0/286 dead transitions. [2024-06-21 20:38:50,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 286 transitions, 4702 flow [2024-06-21 20:38:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:50,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 20:38:50,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 20:38:50,656 INFO L175 Difference]: Start difference. First operand has 288 places, 274 transitions, 3848 flow. Second operand 10 states and 127 transitions. [2024-06-21 20:38:50,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 286 transitions, 4702 flow [2024-06-21 20:38:51,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 286 transitions, 4560 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-21 20:38:51,015 INFO L231 Difference]: Finished difference. Result has 294 places, 276 transitions, 3995 flow [2024-06-21 20:38:51,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3710, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3995, PETRI_PLACES=294, PETRI_TRANSITIONS=276} [2024-06-21 20:38:51,015 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-21 20:38:51,015 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 276 transitions, 3995 flow [2024-06-21 20:38:51,016 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) [2024-06-21 20:38:51,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:51,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:51,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 20:38:51,016 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)] === [2024-06-21 20:38:51,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1012469309, now seen corresponding path program 14 times [2024-06-21 20:38:51,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:51,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840994625] [2024-06-21 20:38:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:51,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:51,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:51,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840994625] [2024-06-21 20:38:51,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840994625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:51,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:51,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:51,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48070458] [2024-06-21 20:38:51,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:51,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:51,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:51,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:51,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:52,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:52,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 276 transitions, 3995 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) [2024-06-21 20:38:52,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:52,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:52,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:52,374 INFO L124 PetriNetUnfolderBase]: 585/1050 cut-off events. [2024-06-21 20:38:52,374 INFO L125 PetriNetUnfolderBase]: For 154251/154251 co-relation queries the response was YES. [2024-06-21 20:38:52,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11136 conditions, 1050 events. 585/1050 cut-off events. For 154251/154251 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5342 event pairs, 51 based on Foata normal form. 1/1046 useless extension candidates. Maximal degree in co-relation 10999. Up to 810 conditions per place. [2024-06-21 20:38:52,383 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 70 changer transitions 0/286 dead transitions. [2024-06-21 20:38:52,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 286 transitions, 4755 flow [2024-06-21 20:38:52,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 20:38:52,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 20:38:52,384 INFO L175 Difference]: Start difference. First operand has 294 places, 276 transitions, 3995 flow. Second operand 10 states and 132 transitions. [2024-06-21 20:38:52,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 286 transitions, 4755 flow [2024-06-21 20:38:52,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 286 transitions, 4454 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:52,836 INFO L231 Difference]: Finished difference. Result has 296 places, 276 transitions, 3839 flow [2024-06-21 20:38:52,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3694, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3839, PETRI_PLACES=296, PETRI_TRANSITIONS=276} [2024-06-21 20:38:52,837 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-21 20:38:52,837 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 276 transitions, 3839 flow [2024-06-21 20:38:52,837 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) [2024-06-21 20:38:52,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:52,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:52,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 20:38:52,837 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)] === [2024-06-21 20:38:52,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:52,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1012469030, now seen corresponding path program 5 times [2024-06-21 20:38:52,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:52,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589347815] [2024-06-21 20:38:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589347815] [2024-06-21 20:38:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589347815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:54,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:54,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621376571] [2024-06-21 20:38:54,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:54,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:54,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:54,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:54,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 276 transitions, 3839 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) [2024-06-21 20:38:54,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:54,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:54,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:54,655 INFO L124 PetriNetUnfolderBase]: 588/1055 cut-off events. [2024-06-21 20:38:54,656 INFO L125 PetriNetUnfolderBase]: For 156981/156981 co-relation queries the response was YES. [2024-06-21 20:38:54,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11070 conditions, 1055 events. 588/1055 cut-off events. For 156981/156981 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5378 event pairs, 47 based on Foata normal form. 1/1052 useless extension candidates. Maximal degree in co-relation 10932. Up to 909 conditions per place. [2024-06-21 20:38:54,668 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 236 selfloop transitions, 49 changer transitions 0/288 dead transitions. [2024-06-21 20:38:54,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 288 transitions, 4650 flow [2024-06-21 20:38:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 20:38:54,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 20:38:54,669 INFO L175 Difference]: Start difference. First operand has 296 places, 276 transitions, 3839 flow. Second operand 10 states and 125 transitions. [2024-06-21 20:38:54,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 288 transitions, 4650 flow [2024-06-21 20:38:55,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 288 transitions, 4506 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 20:38:55,111 INFO L231 Difference]: Finished difference. Result has 297 places, 278 transitions, 3843 flow [2024-06-21 20:38:55,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3695, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3843, PETRI_PLACES=297, PETRI_TRANSITIONS=278} [2024-06-21 20:38:55,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-21 20:38:55,111 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 278 transitions, 3843 flow [2024-06-21 20:38:55,111 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) [2024-06-21 20:38:55,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:55,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:55,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 20:38:55,112 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)] === [2024-06-21 20:38:55,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1012459730, now seen corresponding path program 6 times [2024-06-21 20:38:55,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:55,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050267105] [2024-06-21 20:38:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:56,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:56,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050267105] [2024-06-21 20:38:56,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050267105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:56,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:56,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:56,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303357990] [2024-06-21 20:38:56,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:56,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:56,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:56,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:56,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:56,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:56,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 278 transitions, 3843 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) [2024-06-21 20:38:56,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:56,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:56,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:57,090 INFO L124 PetriNetUnfolderBase]: 586/1052 cut-off events. [2024-06-21 20:38:57,090 INFO L125 PetriNetUnfolderBase]: For 155478/155478 co-relation queries the response was YES. [2024-06-21 20:38:57,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10926 conditions, 1052 events. 586/1052 cut-off events. For 155478/155478 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5367 event pairs, 47 based on Foata normal form. 1/1049 useless extension candidates. Maximal degree in co-relation 10787. Up to 907 conditions per place. [2024-06-21 20:38:57,102 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 234 selfloop transitions, 50 changer transitions 0/287 dead transitions. [2024-06-21 20:38:57,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 287 transitions, 4431 flow [2024-06-21 20:38:57,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 20:38:57,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 20:38:57,102 INFO L175 Difference]: Start difference. First operand has 297 places, 278 transitions, 3843 flow. Second operand 10 states and 123 transitions. [2024-06-21 20:38:57,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 287 transitions, 4431 flow [2024-06-21 20:38:57,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 287 transitions, 4266 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-21 20:38:57,507 INFO L231 Difference]: Finished difference. Result has 299 places, 278 transitions, 3783 flow [2024-06-21 20:38:57,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3783, PETRI_PLACES=299, PETRI_TRANSITIONS=278} [2024-06-21 20:38:57,507 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-21 20:38:57,507 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 278 transitions, 3783 flow [2024-06-21 20:38:57,507 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) [2024-06-21 20:38:57,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:57,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:57,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 20:38:57,508 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)] === [2024-06-21 20:38:57,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:57,508 INFO L85 PathProgramCache]: Analyzing trace with hash -450608701, now seen corresponding path program 15 times [2024-06-21 20:38:57,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:57,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288001860] [2024-06-21 20:38:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:57,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:38:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:38:58,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:38:58,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288001860] [2024-06-21 20:38:58,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288001860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:38:58,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:38:58,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:38:58,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957354090] [2024-06-21 20:38:58,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:38:58,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:38:58,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:38:58,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:38:58,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:38:58,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:38:58,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 278 transitions, 3783 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) [2024-06-21 20:38:58,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:38:58,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:38:58,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:38:58,915 INFO L124 PetriNetUnfolderBase]: 592/1062 cut-off events. [2024-06-21 20:38:58,915 INFO L125 PetriNetUnfolderBase]: For 162746/162746 co-relation queries the response was YES. [2024-06-21 20:38:58,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11015 conditions, 1062 events. 592/1062 cut-off events. For 162746/162746 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5435 event pairs, 61 based on Foata normal form. 2/1062 useless extension candidates. Maximal degree in co-relation 10875. Up to 971 conditions per place. [2024-06-21 20:38:58,927 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 265 selfloop transitions, 22 changer transitions 0/290 dead transitions. [2024-06-21 20:38:58,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 290 transitions, 4445 flow [2024-06-21 20:38:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:38:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:38:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 20:38:58,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-21 20:38:58,928 INFO L175 Difference]: Start difference. First operand has 299 places, 278 transitions, 3783 flow. Second operand 10 states and 119 transitions. [2024-06-21 20:38:58,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 290 transitions, 4445 flow [2024-06-21 20:38:59,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 290 transitions, 4340 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 20:38:59,361 INFO L231 Difference]: Finished difference. Result has 300 places, 280 transitions, 3780 flow [2024-06-21 20:38:59,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3780, PETRI_PLACES=300, PETRI_TRANSITIONS=280} [2024-06-21 20:38:59,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-21 20:38:59,362 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 280 transitions, 3780 flow [2024-06-21 20:38:59,362 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) [2024-06-21 20:38:59,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:38:59,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:38:59,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 20:38:59,362 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)] === [2024-06-21 20:38:59,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:38:59,362 INFO L85 PathProgramCache]: Analyzing trace with hash -439556891, now seen corresponding path program 3 times [2024-06-21 20:38:59,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:38:59,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763244636] [2024-06-21 20:38:59,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:38:59,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:38:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:00,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:00,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763244636] [2024-06-21 20:39:00,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763244636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:00,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:00,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:00,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657298435] [2024-06-21 20:39:00,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:00,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:00,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:00,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:00,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:00,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:39:00,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 280 transitions, 3780 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:39:00,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:00,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:39:00,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:01,438 INFO L124 PetriNetUnfolderBase]: 560/1030 cut-off events. [2024-06-21 20:39:01,438 INFO L125 PetriNetUnfolderBase]: For 168371/168372 co-relation queries the response was YES. [2024-06-21 20:39:01,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10822 conditions, 1030 events. 560/1030 cut-off events. For 168371/168372 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5435 event pairs, 55 based on Foata normal form. 3/1025 useless extension candidates. Maximal degree in co-relation 10682. Up to 861 conditions per place. [2024-06-21 20:39:01,450 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 228 selfloop transitions, 21 changer transitions 0/292 dead transitions. [2024-06-21 20:39:01,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 292 transitions, 4326 flow [2024-06-21 20:39:01,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:39:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:39:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 20:39:01,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 20:39:01,451 INFO L175 Difference]: Start difference. First operand has 300 places, 280 transitions, 3780 flow. Second operand 11 states and 135 transitions. [2024-06-21 20:39:01,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 292 transitions, 4326 flow [2024-06-21 20:39:01,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 292 transitions, 4254 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 20:39:01,916 INFO L231 Difference]: Finished difference. Result has 303 places, 281 transitions, 3782 flow [2024-06-21 20:39:01,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3782, PETRI_PLACES=303, PETRI_TRANSITIONS=281} [2024-06-21 20:39:01,916 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-21 20:39:01,916 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 281 transitions, 3782 flow [2024-06-21 20:39:01,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:39:01,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:01,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:01,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 20:39:01,917 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)] === [2024-06-21 20:39:01,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:01,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1012459389, now seen corresponding path program 4 times [2024-06-21 20:39:01,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:01,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890763461] [2024-06-21 20:39:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:01,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:03,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:03,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890763461] [2024-06-21 20:39:03,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890763461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:03,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:03,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:03,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729500961] [2024-06-21 20:39:03,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:03,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:03,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:03,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:39:03,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 281 transitions, 3782 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:39:03,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:03,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:39:03,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:03,634 INFO L124 PetriNetUnfolderBase]: 562/1038 cut-off events. [2024-06-21 20:39:03,634 INFO L125 PetriNetUnfolderBase]: For 171854/171855 co-relation queries the response was YES. [2024-06-21 20:39:03,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10895 conditions, 1038 events. 562/1038 cut-off events. For 171854/171855 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5515 event pairs, 46 based on Foata normal form. 3/1037 useless extension candidates. Maximal degree in co-relation 10754. Up to 862 conditions per place. [2024-06-21 20:39:03,645 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 227 selfloop transitions, 23 changer transitions 0/293 dead transitions. [2024-06-21 20:39:03,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 293 transitions, 4344 flow [2024-06-21 20:39:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:39:03,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 20:39:03,646 INFO L175 Difference]: Start difference. First operand has 303 places, 281 transitions, 3782 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:39:03,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 293 transitions, 4344 flow [2024-06-21 20:39:04,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 293 transitions, 4277 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 20:39:04,075 INFO L231 Difference]: Finished difference. Result has 305 places, 283 transitions, 3812 flow [2024-06-21 20:39:04,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3717, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3812, PETRI_PLACES=305, PETRI_TRANSITIONS=283} [2024-06-21 20:39:04,076 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-21 20:39:04,076 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 283 transitions, 3812 flow [2024-06-21 20:39:04,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:39:04,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:04,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:04,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 20:39:04,076 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)] === [2024-06-21 20:39:04,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:04,076 INFO L85 PathProgramCache]: Analyzing trace with hash 856869221, now seen corresponding path program 16 times [2024-06-21 20:39:04,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:04,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548224842] [2024-06-21 20:39:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:04,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:05,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:05,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548224842] [2024-06-21 20:39:05,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548224842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:05,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:05,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:05,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124319677] [2024-06-21 20:39:05,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:05,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:05,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:05,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:05,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:05,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:05,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 283 transitions, 3812 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) [2024-06-21 20:39:05,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:05,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:05,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:05,656 INFO L124 PetriNetUnfolderBase]: 598/1075 cut-off events. [2024-06-21 20:39:05,656 INFO L125 PetriNetUnfolderBase]: For 161271/161271 co-relation queries the response was YES. [2024-06-21 20:39:05,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10988 conditions, 1075 events. 598/1075 cut-off events. For 161271/161271 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5530 event pairs, 53 based on Foata normal form. 1/1071 useless extension candidates. Maximal degree in co-relation 10845. Up to 663 conditions per place. [2024-06-21 20:39:05,668 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 186 selfloop transitions, 117 changer transitions 0/306 dead transitions. [2024-06-21 20:39:05,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 306 transitions, 5022 flow [2024-06-21 20:39:05,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 20:39:05,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 20:39:05,669 INFO L175 Difference]: Start difference. First operand has 305 places, 283 transitions, 3812 flow. Second operand 10 states and 132 transitions. [2024-06-21 20:39:05,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 306 transitions, 5022 flow [2024-06-21 20:39:06,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 306 transitions, 4958 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 20:39:06,155 INFO L231 Difference]: Finished difference. Result has 310 places, 295 transitions, 4304 flow [2024-06-21 20:39:06,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3748, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4304, PETRI_PLACES=310, PETRI_TRANSITIONS=295} [2024-06-21 20:39:06,155 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-21 20:39:06,155 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 295 transitions, 4304 flow [2024-06-21 20:39:06,156 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) [2024-06-21 20:39:06,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:06,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:06,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 20:39:06,156 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)] === [2024-06-21 20:39:06,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash -439545731, now seen corresponding path program 5 times [2024-06-21 20:39:06,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:06,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263114034] [2024-06-21 20:39:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:06,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:07,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:07,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263114034] [2024-06-21 20:39:07,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263114034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:07,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:07,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:07,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137594725] [2024-06-21 20:39:07,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:07,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:07,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:07,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:07,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:07,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:39:07,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 295 transitions, 4304 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:39:07,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:07,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:39:07,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:08,014 INFO L124 PetriNetUnfolderBase]: 568/1045 cut-off events. [2024-06-21 20:39:08,014 INFO L125 PetriNetUnfolderBase]: For 172492/172493 co-relation queries the response was YES. [2024-06-21 20:39:08,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11234 conditions, 1045 events. 568/1045 cut-off events. For 172492/172493 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5526 event pairs, 54 based on Foata normal form. 3/1040 useless extension candidates. Maximal degree in co-relation 11088. Up to 862 conditions per place. [2024-06-21 20:39:08,024 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 243 selfloop transitions, 22 changer transitions 0/308 dead transitions. [2024-06-21 20:39:08,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 308 transitions, 4886 flow [2024-06-21 20:39:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:39:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:39:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 20:39:08,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 20:39:08,025 INFO L175 Difference]: Start difference. First operand has 310 places, 295 transitions, 4304 flow. Second operand 11 states and 136 transitions. [2024-06-21 20:39:08,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 308 transitions, 4886 flow [2024-06-21 20:39:08,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 308 transitions, 4757 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-21 20:39:08,501 INFO L231 Difference]: Finished difference. Result has 316 places, 296 transitions, 4251 flow [2024-06-21 20:39:08,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4175, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4251, PETRI_PLACES=316, PETRI_TRANSITIONS=296} [2024-06-21 20:39:08,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-21 20:39:08,502 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 296 transitions, 4251 flow [2024-06-21 20:39:08,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:39:08,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:08,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:08,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 20:39:08,502 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)] === [2024-06-21 20:39:08,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:08,503 INFO L85 PathProgramCache]: Analyzing trace with hash -764307931, now seen corresponding path program 17 times [2024-06-21 20:39:08,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:08,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251060955] [2024-06-21 20:39:08,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:08,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:09,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:09,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251060955] [2024-06-21 20:39:09,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251060955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:09,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:09,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:09,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816504214] [2024-06-21 20:39:09,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:09,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:09,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:09,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:09,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:09,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:09,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 296 transitions, 4251 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) [2024-06-21 20:39:09,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:09,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:09,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:09,792 INFO L124 PetriNetUnfolderBase]: 599/1079 cut-off events. [2024-06-21 20:39:09,792 INFO L125 PetriNetUnfolderBase]: For 165036/165036 co-relation queries the response was YES. [2024-06-21 20:39:09,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11240 conditions, 1079 events. 599/1079 cut-off events. For 165036/165036 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5585 event pairs, 52 based on Foata normal form. 2/1076 useless extension candidates. Maximal degree in co-relation 11092. Up to 507 conditions per place. [2024-06-21 20:39:09,803 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 140 changer transitions 0/312 dead transitions. [2024-06-21 20:39:09,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 312 transitions, 5545 flow [2024-06-21 20:39:09,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-21 20:39:09,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 20:39:09,804 INFO L175 Difference]: Start difference. First operand has 316 places, 296 transitions, 4251 flow. Second operand 10 states and 140 transitions. [2024-06-21 20:39:09,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 312 transitions, 5545 flow [2024-06-21 20:39:10,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 312 transitions, 5390 flow, removed 50 selfloop flow, removed 10 redundant places. [2024-06-21 20:39:10,289 INFO L231 Difference]: Finished difference. Result has 317 places, 298 transitions, 4472 flow [2024-06-21 20:39:10,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4120, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4472, PETRI_PLACES=317, PETRI_TRANSITIONS=298} [2024-06-21 20:39:10,290 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 286 predicate places. [2024-06-21 20:39:10,290 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 298 transitions, 4472 flow [2024-06-21 20:39:10,290 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) [2024-06-21 20:39:10,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:10,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:10,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 20:39:10,290 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)] === [2024-06-21 20:39:10,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:10,291 INFO L85 PathProgramCache]: Analyzing trace with hash -764307652, now seen corresponding path program 7 times [2024-06-21 20:39:10,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:10,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718224367] [2024-06-21 20:39:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:11,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:11,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718224367] [2024-06-21 20:39:11,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718224367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:11,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:11,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:11,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293558025] [2024-06-21 20:39:11,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:11,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:11,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:11,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:11,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:11,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:11,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 298 transitions, 4472 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) [2024-06-21 20:39:11,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:11,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:11,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:11,797 INFO L124 PetriNetUnfolderBase]: 602/1084 cut-off events. [2024-06-21 20:39:11,797 INFO L125 PetriNetUnfolderBase]: For 166067/166067 co-relation queries the response was YES. [2024-06-21 20:39:11,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11521 conditions, 1084 events. 602/1084 cut-off events. For 166067/166067 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5593 event pairs, 48 based on Foata normal form. 1/1081 useless extension candidates. Maximal degree in co-relation 11371. Up to 885 conditions per place. [2024-06-21 20:39:11,810 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 67 changer transitions 0/309 dead transitions. [2024-06-21 20:39:11,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 309 transitions, 5169 flow [2024-06-21 20:39:11,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 20:39:11,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 20:39:11,811 INFO L175 Difference]: Start difference. First operand has 317 places, 298 transitions, 4472 flow. Second operand 10 states and 125 transitions. [2024-06-21 20:39:11,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 309 transitions, 5169 flow [2024-06-21 20:39:12,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 309 transitions, 4794 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-21 20:39:12,455 INFO L231 Difference]: Finished difference. Result has 319 places, 300 transitions, 4305 flow [2024-06-21 20:39:12,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4113, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4305, PETRI_PLACES=319, PETRI_TRANSITIONS=300} [2024-06-21 20:39:12,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-21 20:39:12,455 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 300 transitions, 4305 flow [2024-06-21 20:39:12,456 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) [2024-06-21 20:39:12,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:12,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:12,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 20:39:12,456 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)] === [2024-06-21 20:39:12,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:12,456 INFO L85 PathProgramCache]: Analyzing trace with hash -764298011, now seen corresponding path program 6 times [2024-06-21 20:39:12,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:12,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192567152] [2024-06-21 20:39:12,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:12,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:13,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:13,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192567152] [2024-06-21 20:39:13,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192567152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:13,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:13,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:13,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327034825] [2024-06-21 20:39:13,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:13,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:13,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:13,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:13,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:13,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:39:13,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 300 transitions, 4305 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:39:13,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:13,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:39:13,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:14,069 INFO L124 PetriNetUnfolderBase]: 565/1043 cut-off events. [2024-06-21 20:39:14,070 INFO L125 PetriNetUnfolderBase]: For 164438/164439 co-relation queries the response was YES. [2024-06-21 20:39:14,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10792 conditions, 1043 events. 565/1043 cut-off events. For 164438/164439 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5542 event pairs, 45 based on Foata normal form. 3/1042 useless extension candidates. Maximal degree in co-relation 10641. Up to 827 conditions per place. [2024-06-21 20:39:14,082 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 226 selfloop transitions, 38 changer transitions 0/309 dead transitions. [2024-06-21 20:39:14,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 309 transitions, 4853 flow [2024-06-21 20:39:14,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:39:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:39:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 20:39:14,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-21 20:39:14,083 INFO L175 Difference]: Start difference. First operand has 319 places, 300 transitions, 4305 flow. Second operand 9 states and 121 transitions. [2024-06-21 20:39:14,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 309 transitions, 4853 flow [2024-06-21 20:39:14,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 309 transitions, 4684 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 20:39:14,669 INFO L231 Difference]: Finished difference. Result has 320 places, 300 transitions, 4216 flow [2024-06-21 20:39:14,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4136, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4216, PETRI_PLACES=320, PETRI_TRANSITIONS=300} [2024-06-21 20:39:14,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-21 20:39:14,670 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 300 transitions, 4216 flow [2024-06-21 20:39:14,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:39:14,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:14,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:14,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 20:39:14,670 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)] === [2024-06-21 20:39:14,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:14,671 INFO L85 PathProgramCache]: Analyzing trace with hash -764298352, now seen corresponding path program 8 times [2024-06-21 20:39:14,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:14,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114396023] [2024-06-21 20:39:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:14,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:15,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:15,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114396023] [2024-06-21 20:39:15,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114396023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:15,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:15,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:15,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403661762] [2024-06-21 20:39:15,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:15,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:15,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:15,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:15,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:16,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:16,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 300 transitions, 4216 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) [2024-06-21 20:39:16,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:16,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:16,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:16,396 INFO L124 PetriNetUnfolderBase]: 596/1074 cut-off events. [2024-06-21 20:39:16,397 INFO L125 PetriNetUnfolderBase]: For 156708/156708 co-relation queries the response was YES. [2024-06-21 20:39:16,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10835 conditions, 1074 events. 596/1074 cut-off events. For 156708/156708 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5565 event pairs, 47 based on Foata normal form. 1/1071 useless extension candidates. Maximal degree in co-relation 10683. Up to 866 conditions per place. [2024-06-21 20:39:16,410 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 234 selfloop transitions, 72 changer transitions 0/309 dead transitions. [2024-06-21 20:39:16,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 309 transitions, 4848 flow [2024-06-21 20:39:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:16,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:39:16,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 20:39:16,411 INFO L175 Difference]: Start difference. First operand has 320 places, 300 transitions, 4216 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:39:16,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 309 transitions, 4848 flow [2024-06-21 20:39:16,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 309 transitions, 4681 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-21 20:39:16,993 INFO L231 Difference]: Finished difference. Result has 322 places, 300 transitions, 4198 flow [2024-06-21 20:39:16,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4049, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4198, PETRI_PLACES=322, PETRI_TRANSITIONS=300} [2024-06-21 20:39:16,994 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-21 20:39:16,994 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 300 transitions, 4198 flow [2024-06-21 20:39:16,994 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) [2024-06-21 20:39:16,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:16,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:16,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 20:39:16,995 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)] === [2024-06-21 20:39:16,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:16,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1020087869, now seen corresponding path program 18 times [2024-06-21 20:39:16,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:16,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616440821] [2024-06-21 20:39:16,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:16,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:17,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:17,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616440821] [2024-06-21 20:39:17,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616440821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:17,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:17,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:17,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196602065] [2024-06-21 20:39:17,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:17,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:17,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:17,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:17,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 300 transitions, 4198 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) [2024-06-21 20:39:17,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:17,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:17,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:18,315 INFO L124 PetriNetUnfolderBase]: 598/1078 cut-off events. [2024-06-21 20:39:18,316 INFO L125 PetriNetUnfolderBase]: For 163388/163388 co-relation queries the response was YES. [2024-06-21 20:39:18,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10696 conditions, 1078 events. 598/1078 cut-off events. For 163388/163388 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5605 event pairs, 52 based on Foata normal form. 4/1077 useless extension candidates. Maximal degree in co-relation 10543. Up to 874 conditions per place. [2024-06-21 20:39:18,329 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 56 changer transitions 0/313 dead transitions. [2024-06-21 20:39:18,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 313 transitions, 4953 flow [2024-06-21 20:39:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:39:18,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 20:39:18,330 INFO L175 Difference]: Start difference. First operand has 322 places, 300 transitions, 4198 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:39:18,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 313 transitions, 4953 flow [2024-06-21 20:39:18,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 313 transitions, 4797 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 20:39:18,914 INFO L231 Difference]: Finished difference. Result has 323 places, 303 transitions, 4260 flow [2024-06-21 20:39:18,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4042, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4260, PETRI_PLACES=323, PETRI_TRANSITIONS=303} [2024-06-21 20:39:18,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-21 20:39:18,914 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 303 transitions, 4260 flow [2024-06-21 20:39:18,914 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) [2024-06-21 20:39:18,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:18,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:18,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 20:39:18,915 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)] === [2024-06-21 20:39:18,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:18,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1020088086, now seen corresponding path program 10 times [2024-06-21 20:39:18,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:18,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162783401] [2024-06-21 20:39:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:18,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:19,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:19,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162783401] [2024-06-21 20:39:19,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162783401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:19,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:19,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:19,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104019517] [2024-06-21 20:39:19,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:19,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:19,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:19,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:19,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:19,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:19,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 303 transitions, 4260 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) [2024-06-21 20:39:19,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:19,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:19,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:20,263 INFO L124 PetriNetUnfolderBase]: 601/1085 cut-off events. [2024-06-21 20:39:20,264 INFO L125 PetriNetUnfolderBase]: For 154241/154241 co-relation queries the response was YES. [2024-06-21 20:39:20,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10807 conditions, 1085 events. 601/1085 cut-off events. For 154241/154241 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5653 event pairs, 52 based on Foata normal form. 1/1081 useless extension candidates. Maximal degree in co-relation 10654. Up to 888 conditions per place. [2024-06-21 20:39:20,277 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 53 changer transitions 0/314 dead transitions. [2024-06-21 20:39:20,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 314 transitions, 4990 flow [2024-06-21 20:39:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 20:39:20,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 20:39:20,278 INFO L175 Difference]: Start difference. First operand has 323 places, 303 transitions, 4260 flow. Second operand 10 states and 124 transitions. [2024-06-21 20:39:20,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 314 transitions, 4990 flow [2024-06-21 20:39:20,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 314 transitions, 4721 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-21 20:39:20,920 INFO L231 Difference]: Finished difference. Result has 323 places, 305 transitions, 4194 flow [2024-06-21 20:39:20,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3991, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4194, PETRI_PLACES=323, PETRI_TRANSITIONS=305} [2024-06-21 20:39:20,921 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-21 20:39:20,921 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 305 transitions, 4194 flow [2024-06-21 20:39:20,921 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) [2024-06-21 20:39:20,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:20,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:20,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 20:39:20,921 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)] === [2024-06-21 20:39:20,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:20,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1019886276, now seen corresponding path program 11 times [2024-06-21 20:39:20,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:20,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834776192] [2024-06-21 20:39:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:20,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:21,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:21,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834776192] [2024-06-21 20:39:21,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834776192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:21,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:21,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:21,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971148665] [2024-06-21 20:39:21,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:21,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:21,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:21,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:21,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:21,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:21,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 305 transitions, 4194 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) [2024-06-21 20:39:21,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:21,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:21,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:22,345 INFO L124 PetriNetUnfolderBase]: 599/1082 cut-off events. [2024-06-21 20:39:22,346 INFO L125 PetriNetUnfolderBase]: For 150852/150852 co-relation queries the response was YES. [2024-06-21 20:39:22,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10479 conditions, 1082 events. 599/1082 cut-off events. For 150852/150852 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5618 event pairs, 52 based on Foata normal form. 1/1078 useless extension candidates. Maximal degree in co-relation 10327. Up to 876 conditions per place. [2024-06-21 20:39:22,358 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 57 changer transitions 0/314 dead transitions. [2024-06-21 20:39:22,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 314 transitions, 4836 flow [2024-06-21 20:39:22,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:22,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:22,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:39:22,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 20:39:22,359 INFO L175 Difference]: Start difference. First operand has 323 places, 305 transitions, 4194 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:39:22,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 314 transitions, 4836 flow [2024-06-21 20:39:22,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 314 transitions, 4585 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-21 20:39:22,934 INFO L231 Difference]: Finished difference. Result has 325 places, 305 transitions, 4062 flow [2024-06-21 20:39:22,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3943, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4062, PETRI_PLACES=325, PETRI_TRANSITIONS=305} [2024-06-21 20:39:22,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-21 20:39:22,935 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 305 transitions, 4062 flow [2024-06-21 20:39:22,935 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) [2024-06-21 20:39:22,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:22,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:22,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 20:39:22,936 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)] === [2024-06-21 20:39:22,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1019886059, now seen corresponding path program 19 times [2024-06-21 20:39:22,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:22,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215258671] [2024-06-21 20:39:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:22,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:23,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:23,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215258671] [2024-06-21 20:39:23,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215258671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:23,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:23,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:23,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198051437] [2024-06-21 20:39:23,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:23,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:23,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:23,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:23,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 305 transitions, 4062 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) [2024-06-21 20:39:23,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:23,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:23,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:24,247 INFO L124 PetriNetUnfolderBase]: 610/1100 cut-off events. [2024-06-21 20:39:24,247 INFO L125 PetriNetUnfolderBase]: For 162919/162919 co-relation queries the response was YES. [2024-06-21 20:39:24,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10719 conditions, 1100 events. 610/1100 cut-off events. For 162919/162919 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5742 event pairs, 51 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 10566. Up to 865 conditions per place. [2024-06-21 20:39:24,260 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 253 selfloop transitions, 66 changer transitions 0/322 dead transitions. [2024-06-21 20:39:24,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 322 transitions, 5128 flow [2024-06-21 20:39:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:24,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 20:39:24,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 20:39:24,263 INFO L175 Difference]: Start difference. First operand has 325 places, 305 transitions, 4062 flow. Second operand 10 states and 132 transitions. [2024-06-21 20:39:24,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 322 transitions, 5128 flow [2024-06-21 20:39:24,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 322 transitions, 4947 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-21 20:39:24,867 INFO L231 Difference]: Finished difference. Result has 325 places, 310 transitions, 4183 flow [2024-06-21 20:39:24,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3881, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4183, PETRI_PLACES=325, PETRI_TRANSITIONS=310} [2024-06-21 20:39:24,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-21 20:39:24,867 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 310 transitions, 4183 flow [2024-06-21 20:39:24,867 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) [2024-06-21 20:39:24,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:24,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:24,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 20:39:24,868 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)] === [2024-06-21 20:39:24,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:24,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1019878619, now seen corresponding path program 20 times [2024-06-21 20:39:24,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:24,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446133820] [2024-06-21 20:39:24,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:24,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:25,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:25,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446133820] [2024-06-21 20:39:25,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446133820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:25,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:25,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:25,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494511966] [2024-06-21 20:39:25,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:25,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:25,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:25,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:25,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:25,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:25,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 310 transitions, 4183 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) [2024-06-21 20:39:25,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:25,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:25,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:26,200 INFO L124 PetriNetUnfolderBase]: 606/1094 cut-off events. [2024-06-21 20:39:26,200 INFO L125 PetriNetUnfolderBase]: For 156483/156483 co-relation queries the response was YES. [2024-06-21 20:39:26,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10382 conditions, 1094 events. 606/1094 cut-off events. For 156483/156483 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5713 event pairs, 51 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 10229. Up to 862 conditions per place. [2024-06-21 20:39:26,213 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 67 changer transitions 0/320 dead transitions. [2024-06-21 20:39:26,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 320 transitions, 4860 flow [2024-06-21 20:39:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 20:39:26,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:39:26,214 INFO L175 Difference]: Start difference. First operand has 325 places, 310 transitions, 4183 flow. Second operand 10 states and 130 transitions. [2024-06-21 20:39:26,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 320 transitions, 4860 flow [2024-06-21 20:39:26,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 320 transitions, 4615 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-06-21 20:39:26,690 INFO L231 Difference]: Finished difference. Result has 329 places, 310 transitions, 4091 flow [2024-06-21 20:39:26,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3950, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4091, PETRI_PLACES=329, PETRI_TRANSITIONS=310} [2024-06-21 20:39:26,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-21 20:39:26,691 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 310 transitions, 4091 flow [2024-06-21 20:39:26,691 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) [2024-06-21 20:39:26,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:26,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:26,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 20:39:26,691 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)] === [2024-06-21 20:39:26,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:26,691 INFO L85 PathProgramCache]: Analyzing trace with hash -415115516, now seen corresponding path program 9 times [2024-06-21 20:39:26,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:26,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394018778] [2024-06-21 20:39:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:26,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:27,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:27,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394018778] [2024-06-21 20:39:27,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394018778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:27,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:27,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:27,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483671687] [2024-06-21 20:39:27,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:27,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:27,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:27,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:27,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:28,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:28,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 310 transitions, 4091 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) [2024-06-21 20:39:28,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:28,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:28,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:28,353 INFO L124 PetriNetUnfolderBase]: 615/1109 cut-off events. [2024-06-21 20:39:28,353 INFO L125 PetriNetUnfolderBase]: For 153050/153050 co-relation queries the response was YES. [2024-06-21 20:39:28,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10456 conditions, 1109 events. 615/1109 cut-off events. For 153050/153050 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5770 event pairs, 41 based on Foata normal form. 1/1108 useless extension candidates. Maximal degree in co-relation 10301. Up to 1016 conditions per place. [2024-06-21 20:39:28,365 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 302 selfloop transitions, 26 changer transitions 0/331 dead transitions. [2024-06-21 20:39:28,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 331 transitions, 4885 flow [2024-06-21 20:39:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:39:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:39:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 20:39:28,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:39:28,366 INFO L175 Difference]: Start difference. First operand has 329 places, 310 transitions, 4091 flow. Second operand 11 states and 132 transitions. [2024-06-21 20:39:28,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 331 transitions, 4885 flow [2024-06-21 20:39:28,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 331 transitions, 4722 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 20:39:28,938 INFO L231 Difference]: Finished difference. Result has 333 places, 316 transitions, 4103 flow [2024-06-21 20:39:28,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3928, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4103, PETRI_PLACES=333, PETRI_TRANSITIONS=316} [2024-06-21 20:39:28,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-21 20:39:28,938 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 316 transitions, 4103 flow [2024-06-21 20:39:28,938 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) [2024-06-21 20:39:28,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:28,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:28,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 20:39:28,938 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)] === [2024-06-21 20:39:28,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:28,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1721417024, now seen corresponding path program 10 times [2024-06-21 20:39:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:28,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179645764] [2024-06-21 20:39:28,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:28,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:30,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:30,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179645764] [2024-06-21 20:39:30,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179645764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:30,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:30,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:30,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725997183] [2024-06-21 20:39:30,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:30,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:30,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:30,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:30,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:30,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:30,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 316 transitions, 4103 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) [2024-06-21 20:39:30,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:30,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:30,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:30,509 INFO L124 PetriNetUnfolderBase]: 612/1104 cut-off events. [2024-06-21 20:39:30,510 INFO L125 PetriNetUnfolderBase]: For 150230/150230 co-relation queries the response was YES. [2024-06-21 20:39:30,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10239 conditions, 1104 events. 612/1104 cut-off events. For 150230/150230 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5781 event pairs, 38 based on Foata normal form. 1/1103 useless extension candidates. Maximal degree in co-relation 10081. Up to 1011 conditions per place. [2024-06-21 20:39:30,522 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 303 selfloop transitions, 25 changer transitions 0/331 dead transitions. [2024-06-21 20:39:30,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 331 transitions, 4807 flow [2024-06-21 20:39:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:39:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:39:30,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 20:39:30,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:39:30,523 INFO L175 Difference]: Start difference. First operand has 333 places, 316 transitions, 4103 flow. Second operand 11 states and 132 transitions. [2024-06-21 20:39:30,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 331 transitions, 4807 flow [2024-06-21 20:39:31,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 331 transitions, 4716 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-21 20:39:31,155 INFO L231 Difference]: Finished difference. Result has 338 places, 317 transitions, 4084 flow [2024-06-21 20:39:31,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4012, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4084, PETRI_PLACES=338, PETRI_TRANSITIONS=317} [2024-06-21 20:39:31,155 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-21 20:39:31,155 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 317 transitions, 4084 flow [2024-06-21 20:39:31,155 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) [2024-06-21 20:39:31,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:31,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:31,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 20:39:31,156 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)] === [2024-06-21 20:39:31,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:31,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1940697261, now seen corresponding path program 1 times [2024-06-21 20:39:31,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:31,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514416283] [2024-06-21 20:39:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:31,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:31,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:31,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514416283] [2024-06-21 20:39:31,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514416283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:31,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:31,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:31,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046976763] [2024-06-21 20:39:31,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:31,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:31,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:31,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:31,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:32,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:32,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 317 transitions, 4084 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) [2024-06-21 20:39:32,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:32,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:32,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:32,617 INFO L124 PetriNetUnfolderBase]: 616/1112 cut-off events. [2024-06-21 20:39:32,617 INFO L125 PetriNetUnfolderBase]: For 158418/158418 co-relation queries the response was YES. [2024-06-21 20:39:32,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10292 conditions, 1112 events. 616/1112 cut-off events. For 158418/158418 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5855 event pairs, 24 based on Foata normal form. 2/1112 useless extension candidates. Maximal degree in co-relation 10132. Up to 966 conditions per place. [2024-06-21 20:39:32,627 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 305 selfloop transitions, 30 changer transitions 0/338 dead transitions. [2024-06-21 20:39:32,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 338 transitions, 4830 flow [2024-06-21 20:39:32,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:32,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:39:32,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 20:39:32,628 INFO L175 Difference]: Start difference. First operand has 338 places, 317 transitions, 4084 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:39:32,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 338 transitions, 4830 flow [2024-06-21 20:39:33,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 338 transitions, 4695 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-21 20:39:33,210 INFO L231 Difference]: Finished difference. Result has 336 places, 318 transitions, 4039 flow [2024-06-21 20:39:33,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4039, PETRI_PLACES=336, PETRI_TRANSITIONS=318} [2024-06-21 20:39:33,211 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-21 20:39:33,211 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 318 transitions, 4039 flow [2024-06-21 20:39:33,211 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) [2024-06-21 20:39:33,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:33,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:33,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 20:39:33,211 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)] === [2024-06-21 20:39:33,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:33,211 INFO L85 PathProgramCache]: Analyzing trace with hash -731475817, now seen corresponding path program 2 times [2024-06-21 20:39:33,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:33,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567598950] [2024-06-21 20:39:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:33,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:33,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:33,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567598950] [2024-06-21 20:39:33,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567598950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:33,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:33,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:33,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040102652] [2024-06-21 20:39:33,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:33,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:33,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:33,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:33,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:34,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:34,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 318 transitions, 4039 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) [2024-06-21 20:39:34,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:34,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:34,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:34,575 INFO L124 PetriNetUnfolderBase]: 620/1120 cut-off events. [2024-06-21 20:39:34,576 INFO L125 PetriNetUnfolderBase]: For 161253/161253 co-relation queries the response was YES. [2024-06-21 20:39:34,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10354 conditions, 1120 events. 620/1120 cut-off events. For 161253/161253 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 5892 event pairs, 41 based on Foata normal form. 2/1120 useless extension candidates. Maximal degree in co-relation 10195. Up to 991 conditions per place. [2024-06-21 20:39:34,588 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 304 selfloop transitions, 31 changer transitions 0/338 dead transitions. [2024-06-21 20:39:34,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 338 transitions, 4785 flow [2024-06-21 20:39:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 20:39:34,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 20:39:34,589 INFO L175 Difference]: Start difference. First operand has 336 places, 318 transitions, 4039 flow. Second operand 10 states and 127 transitions. [2024-06-21 20:39:34,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 338 transitions, 4785 flow [2024-06-21 20:39:35,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 338 transitions, 4705 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 20:39:35,180 INFO L231 Difference]: Finished difference. Result has 338 places, 319 transitions, 4053 flow [2024-06-21 20:39:35,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3959, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4053, PETRI_PLACES=338, PETRI_TRANSITIONS=319} [2024-06-21 20:39:35,180 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-21 20:39:35,180 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 319 transitions, 4053 flow [2024-06-21 20:39:35,181 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) [2024-06-21 20:39:35,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:35,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:35,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 20:39:35,181 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)] === [2024-06-21 20:39:35,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:35,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1563285149, now seen corresponding path program 3 times [2024-06-21 20:39:35,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:35,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051673653] [2024-06-21 20:39:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:35,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:35,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:35,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051673653] [2024-06-21 20:39:35,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051673653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:35,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:35,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:35,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630039124] [2024-06-21 20:39:35,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:35,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:35,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:35,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:35,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:35,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:35,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 319 transitions, 4053 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) [2024-06-21 20:39:35,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:35,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:35,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:36,437 INFO L124 PetriNetUnfolderBase]: 624/1128 cut-off events. [2024-06-21 20:39:36,437 INFO L125 PetriNetUnfolderBase]: For 166185/166185 co-relation queries the response was YES. [2024-06-21 20:39:36,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10420 conditions, 1128 events. 624/1128 cut-off events. For 166185/166185 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 5949 event pairs, 39 based on Foata normal form. 2/1128 useless extension candidates. Maximal degree in co-relation 10260. Up to 990 conditions per place. [2024-06-21 20:39:36,450 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 298 selfloop transitions, 40 changer transitions 0/341 dead transitions. [2024-06-21 20:39:36,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 341 transitions, 4873 flow [2024-06-21 20:39:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:36,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 20:39:36,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 20:39:36,451 INFO L175 Difference]: Start difference. First operand has 338 places, 319 transitions, 4053 flow. Second operand 10 states and 124 transitions. [2024-06-21 20:39:36,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 341 transitions, 4873 flow [2024-06-21 20:39:37,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 341 transitions, 4789 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 20:39:37,057 INFO L231 Difference]: Finished difference. Result has 341 places, 325 transitions, 4173 flow [2024-06-21 20:39:37,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3969, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4173, PETRI_PLACES=341, PETRI_TRANSITIONS=325} [2024-06-21 20:39:37,057 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-21 20:39:37,057 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 325 transitions, 4173 flow [2024-06-21 20:39:37,057 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) [2024-06-21 20:39:37,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:37,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:37,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 20:39:37,057 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)] === [2024-06-21 20:39:37,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:37,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1678571359, now seen corresponding path program 1 times [2024-06-21 20:39:37,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:37,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810023990] [2024-06-21 20:39:37,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:37,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:38,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810023990] [2024-06-21 20:39:38,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810023990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:38,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:38,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:39:38,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952369330] [2024-06-21 20:39:38,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:38,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:39:38,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:38,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:39:38,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:39:38,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:38,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 325 transitions, 4173 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) [2024-06-21 20:39:38,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:38,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:38,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:38,772 INFO L124 PetriNetUnfolderBase]: 630/1138 cut-off events. [2024-06-21 20:39:38,772 INFO L125 PetriNetUnfolderBase]: For 168982/168982 co-relation queries the response was YES. [2024-06-21 20:39:38,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10598 conditions, 1138 events. 630/1138 cut-off events. For 168982/168982 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6013 event pairs, 40 based on Foata normal form. 2/1138 useless extension candidates. Maximal degree in co-relation 10436. Up to 1006 conditions per place. [2024-06-21 20:39:38,788 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 310 selfloop transitions, 34 changer transitions 0/347 dead transitions. [2024-06-21 20:39:38,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 347 transitions, 4997 flow [2024-06-21 20:39:38,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:39:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:39:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 20:39:38,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 20:39:38,789 INFO L175 Difference]: Start difference. First operand has 341 places, 325 transitions, 4173 flow. Second operand 11 states and 138 transitions. [2024-06-21 20:39:38,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 347 transitions, 4997 flow [2024-06-21 20:39:39,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 347 transitions, 4912 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 20:39:39,477 INFO L231 Difference]: Finished difference. Result has 346 places, 327 transitions, 4231 flow [2024-06-21 20:39:39,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4088, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4231, PETRI_PLACES=346, PETRI_TRANSITIONS=327} [2024-06-21 20:39:39,477 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-21 20:39:39,477 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 327 transitions, 4231 flow [2024-06-21 20:39:39,477 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) [2024-06-21 20:39:39,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:39,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:39,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 20:39:39,477 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)] === [2024-06-21 20:39:39,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:39,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1563107209, now seen corresponding path program 2 times [2024-06-21 20:39:39,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:39,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899877193] [2024-06-21 20:39:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:39,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:40,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:40,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899877193] [2024-06-21 20:39:40,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899877193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:40,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:40,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:39:40,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795766065] [2024-06-21 20:39:40,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:40,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:39:40,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:39:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:39:40,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:40,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 327 transitions, 4231 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) [2024-06-21 20:39:40,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:40,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:40,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:41,089 INFO L124 PetriNetUnfolderBase]: 658/1189 cut-off events. [2024-06-21 20:39:41,089 INFO L125 PetriNetUnfolderBase]: For 197074/197074 co-relation queries the response was YES. [2024-06-21 20:39:41,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11734 conditions, 1189 events. 658/1189 cut-off events. For 197074/197074 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6338 event pairs, 36 based on Foata normal form. 1/1188 useless extension candidates. Maximal degree in co-relation 11571. Up to 1003 conditions per place. [2024-06-21 20:39:41,105 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 298 selfloop transitions, 54 changer transitions 0/355 dead transitions. [2024-06-21 20:39:41,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 355 transitions, 5722 flow [2024-06-21 20:39:41,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:39:41,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:39:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 20:39:41,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 20:39:41,106 INFO L175 Difference]: Start difference. First operand has 346 places, 327 transitions, 4231 flow. Second operand 11 states and 142 transitions. [2024-06-21 20:39:41,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 355 transitions, 5722 flow [2024-06-21 20:39:41,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 355 transitions, 5601 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 20:39:41,894 INFO L231 Difference]: Finished difference. Result has 349 places, 337 transitions, 4565 flow [2024-06-21 20:39:41,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4110, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4565, PETRI_PLACES=349, PETRI_TRANSITIONS=337} [2024-06-21 20:39:41,895 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-21 20:39:41,895 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 337 transitions, 4565 flow [2024-06-21 20:39:41,895 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) [2024-06-21 20:39:41,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:41,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:41,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 20:39:41,895 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)] === [2024-06-21 20:39:41,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:41,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1563100699, now seen corresponding path program 3 times [2024-06-21 20:39:41,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:41,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902344512] [2024-06-21 20:39:41,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:41,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:42,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902344512] [2024-06-21 20:39:42,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902344512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:42,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:42,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:39:42,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359092908] [2024-06-21 20:39:42,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:42,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:39:42,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:42,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:39:42,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:39:42,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:42,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 337 transitions, 4565 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) [2024-06-21 20:39:42,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:42,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:42,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:43,444 INFO L124 PetriNetUnfolderBase]: 655/1186 cut-off events. [2024-06-21 20:39:43,444 INFO L125 PetriNetUnfolderBase]: For 195380/195380 co-relation queries the response was YES. [2024-06-21 20:39:43,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11540 conditions, 1186 events. 655/1186 cut-off events. For 195380/195380 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6332 event pairs, 36 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 11375. Up to 1002 conditions per place. [2024-06-21 20:39:43,458 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 298 selfloop transitions, 53 changer transitions 0/354 dead transitions. [2024-06-21 20:39:43,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 354 transitions, 5527 flow [2024-06-21 20:39:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:39:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:39:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 20:39:43,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 20:39:43,459 INFO L175 Difference]: Start difference. First operand has 349 places, 337 transitions, 4565 flow. Second operand 11 states and 140 transitions. [2024-06-21 20:39:43,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 354 transitions, 5527 flow [2024-06-21 20:39:44,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 354 transitions, 5317 flow, removed 79 selfloop flow, removed 6 redundant places. [2024-06-21 20:39:44,234 INFO L231 Difference]: Finished difference. Result has 354 places, 337 transitions, 4468 flow [2024-06-21 20:39:44,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4355, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4468, PETRI_PLACES=354, PETRI_TRANSITIONS=337} [2024-06-21 20:39:44,235 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-21 20:39:44,235 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 337 transitions, 4468 flow [2024-06-21 20:39:44,235 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) [2024-06-21 20:39:44,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:44,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:44,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 20:39:44,235 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)] === [2024-06-21 20:39:44,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1563100451, now seen corresponding path program 1 times [2024-06-21 20:39:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:44,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432548283] [2024-06-21 20:39:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:44,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:45,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:45,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432548283] [2024-06-21 20:39:45,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432548283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:45,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:45,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:45,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701457964] [2024-06-21 20:39:45,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:45,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:45,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:45,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:45,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:45,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:45,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 337 transitions, 4468 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) [2024-06-21 20:39:45,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:45,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:45,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:45,584 INFO L124 PetriNetUnfolderBase]: 650/1177 cut-off events. [2024-06-21 20:39:45,584 INFO L125 PetriNetUnfolderBase]: For 185936/185936 co-relation queries the response was YES. [2024-06-21 20:39:45,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11133 conditions, 1177 events. 650/1177 cut-off events. For 185936/185936 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6279 event pairs, 37 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 10966. Up to 1015 conditions per place. [2024-06-21 20:39:45,598 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 303 selfloop transitions, 46 changer transitions 0/352 dead transitions. [2024-06-21 20:39:45,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 352 transitions, 5204 flow [2024-06-21 20:39:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:45,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 20:39:45,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 20:39:45,599 INFO L175 Difference]: Start difference. First operand has 354 places, 337 transitions, 4468 flow. Second operand 10 states and 128 transitions. [2024-06-21 20:39:45,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 352 transitions, 5204 flow [2024-06-21 20:39:46,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 352 transitions, 5104 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 20:39:46,263 INFO L231 Difference]: Finished difference. Result has 355 places, 337 transitions, 4468 flow [2024-06-21 20:39:46,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4368, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4468, PETRI_PLACES=355, PETRI_TRANSITIONS=337} [2024-06-21 20:39:46,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-21 20:39:46,264 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 337 transitions, 4468 flow [2024-06-21 20:39:46,264 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) [2024-06-21 20:39:46,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:46,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:46,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 20:39:46,264 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)] === [2024-06-21 20:39:46,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1397646015, now seen corresponding path program 4 times [2024-06-21 20:39:46,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:46,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470362535] [2024-06-21 20:39:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:46,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:47,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:47,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470362535] [2024-06-21 20:39:47,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470362535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:47,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:47,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:47,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60727433] [2024-06-21 20:39:47,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:47,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:47,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:47,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:47,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:47,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:47,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 337 transitions, 4468 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) [2024-06-21 20:39:47,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:47,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:47,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:47,623 INFO L124 PetriNetUnfolderBase]: 654/1185 cut-off events. [2024-06-21 20:39:47,624 INFO L125 PetriNetUnfolderBase]: For 189696/189696 co-relation queries the response was YES. [2024-06-21 20:39:47,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11230 conditions, 1185 events. 654/1185 cut-off events. For 189696/189696 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6334 event pairs, 36 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 11062. Up to 1001 conditions per place. [2024-06-21 20:39:47,635 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 305 selfloop transitions, 47 changer transitions 0/355 dead transitions. [2024-06-21 20:39:47,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 355 transitions, 5276 flow [2024-06-21 20:39:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 20:39:47,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 20:39:47,636 INFO L175 Difference]: Start difference. First operand has 355 places, 337 transitions, 4468 flow. Second operand 10 states and 125 transitions. [2024-06-21 20:39:47,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 355 transitions, 5276 flow [2024-06-21 20:39:48,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 355 transitions, 5140 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 20:39:48,337 INFO L231 Difference]: Finished difference. Result has 357 places, 340 transitions, 4499 flow [2024-06-21 20:39:48,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4332, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4499, PETRI_PLACES=357, PETRI_TRANSITIONS=340} [2024-06-21 20:39:48,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-21 20:39:48,338 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 340 transitions, 4499 flow [2024-06-21 20:39:48,338 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) [2024-06-21 20:39:48,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:48,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:48,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 20:39:48,338 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)] === [2024-06-21 20:39:48,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1397461565, now seen corresponding path program 4 times [2024-06-21 20:39:48,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:48,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031428136] [2024-06-21 20:39:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:48,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:49,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:49,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031428136] [2024-06-21 20:39:49,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031428136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:49,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:49,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:39:49,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824518461] [2024-06-21 20:39:49,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:49,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:39:49,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:49,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:39:49,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:39:49,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:49,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 340 transitions, 4499 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) [2024-06-21 20:39:49,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:49,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:49,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:50,053 INFO L124 PetriNetUnfolderBase]: 662/1200 cut-off events. [2024-06-21 20:39:50,053 INFO L125 PetriNetUnfolderBase]: For 193884/193884 co-relation queries the response was YES. [2024-06-21 20:39:50,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11521 conditions, 1200 events. 662/1200 cut-off events. For 193884/193884 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6453 event pairs, 35 based on Foata normal form. 1/1199 useless extension candidates. Maximal degree in co-relation 11352. Up to 1017 conditions per place. [2024-06-21 20:39:50,070 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 299 selfloop transitions, 57 changer transitions 0/359 dead transitions. [2024-06-21 20:39:50,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 359 transitions, 5615 flow [2024-06-21 20:39:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:39:50,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:39:50,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 20:39:50,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 20:39:50,071 INFO L175 Difference]: Start difference. First operand has 357 places, 340 transitions, 4499 flow. Second operand 11 states and 138 transitions. [2024-06-21 20:39:50,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 359 transitions, 5615 flow [2024-06-21 20:39:50,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 359 transitions, 5457 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 20:39:50,806 INFO L231 Difference]: Finished difference. Result has 359 places, 344 transitions, 4608 flow [2024-06-21 20:39:50,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4341, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4608, PETRI_PLACES=359, PETRI_TRANSITIONS=344} [2024-06-21 20:39:50,806 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-21 20:39:50,806 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 344 transitions, 4608 flow [2024-06-21 20:39:50,806 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) [2024-06-21 20:39:50,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:50,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:50,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 20:39:50,806 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)] === [2024-06-21 20:39:50,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:50,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1397461317, now seen corresponding path program 2 times [2024-06-21 20:39:50,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:50,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105123630] [2024-06-21 20:39:50,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:50,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:51,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:51,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105123630] [2024-06-21 20:39:51,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105123630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:51,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:51,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:39:51,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449945052] [2024-06-21 20:39:51,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:51,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:39:51,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:51,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:39:51,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:39:51,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:51,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 344 transitions, 4608 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) [2024-06-21 20:39:51,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:51,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:51,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:52,237 INFO L124 PetriNetUnfolderBase]: 658/1196 cut-off events. [2024-06-21 20:39:52,238 INFO L125 PetriNetUnfolderBase]: For 191104/191104 co-relation queries the response was YES. [2024-06-21 20:39:52,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11228 conditions, 1196 events. 658/1196 cut-off events. For 191104/191104 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6445 event pairs, 35 based on Foata normal form. 2/1196 useless extension candidates. Maximal degree in co-relation 11059. Up to 1015 conditions per place. [2024-06-21 20:39:52,253 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 300 selfloop transitions, 54 changer transitions 0/357 dead transitions. [2024-06-21 20:39:52,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 357 transitions, 5348 flow [2024-06-21 20:39:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:39:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:39:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 20:39:52,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 20:39:52,254 INFO L175 Difference]: Start difference. First operand has 359 places, 344 transitions, 4608 flow. Second operand 10 states and 128 transitions. [2024-06-21 20:39:52,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 357 transitions, 5348 flow [2024-06-21 20:39:53,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 357 transitions, 5150 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-21 20:39:53,006 INFO L231 Difference]: Finished difference. Result has 362 places, 344 transitions, 4526 flow [2024-06-21 20:39:53,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4410, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4526, PETRI_PLACES=362, PETRI_TRANSITIONS=344} [2024-06-21 20:39:53,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-21 20:39:53,006 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 344 transitions, 4526 flow [2024-06-21 20:39:53,006 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) [2024-06-21 20:39:53,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:53,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:53,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 20:39:53,007 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)] === [2024-06-21 20:39:53,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:53,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1391205455, now seen corresponding path program 5 times [2024-06-21 20:39:53,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:53,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035795748] [2024-06-21 20:39:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:53,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:53,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:53,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035795748] [2024-06-21 20:39:53,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035795748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:53,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:53,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:39:53,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794815718] [2024-06-21 20:39:53,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:53,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:39:53,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:53,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:39:53,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:39:54,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:54,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 344 transitions, 4526 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) [2024-06-21 20:39:54,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:54,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:54,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:54,567 INFO L124 PetriNetUnfolderBase]: 689/1254 cut-off events. [2024-06-21 20:39:54,568 INFO L125 PetriNetUnfolderBase]: For 227649/227649 co-relation queries the response was YES. [2024-06-21 20:39:54,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12560 conditions, 1254 events. 689/1254 cut-off events. For 227649/227649 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6850 event pairs, 34 based on Foata normal form. 2/1254 useless extension candidates. Maximal degree in co-relation 12389. Up to 911 conditions per place. [2024-06-21 20:39:54,583 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 283 selfloop transitions, 88 changer transitions 0/374 dead transitions. [2024-06-21 20:39:54,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 374 transitions, 6414 flow [2024-06-21 20:39:54,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:39:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:39:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 20:39:54,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 20:39:54,584 INFO L175 Difference]: Start difference. First operand has 362 places, 344 transitions, 4526 flow. Second operand 11 states and 147 transitions. [2024-06-21 20:39:54,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 374 transitions, 6414 flow [2024-06-21 20:39:55,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 374 transitions, 6212 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 20:39:55,476 INFO L231 Difference]: Finished difference. Result has 362 places, 353 transitions, 4841 flow [2024-06-21 20:39:55,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4324, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4841, PETRI_PLACES=362, PETRI_TRANSITIONS=353} [2024-06-21 20:39:55,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-21 20:39:55,476 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 353 transitions, 4841 flow [2024-06-21 20:39:55,476 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) [2024-06-21 20:39:55,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:55,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:55,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 20:39:55,477 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)] === [2024-06-21 20:39:55,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:55,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1391211965, now seen corresponding path program 6 times [2024-06-21 20:39:55,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:55,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284702009] [2024-06-21 20:39:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:55,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:56,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284702009] [2024-06-21 20:39:56,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284702009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:56,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:56,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:39:56,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523489350] [2024-06-21 20:39:56,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:56,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:39:56,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:56,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:39:56,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:39:56,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:56,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 353 transitions, 4841 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) [2024-06-21 20:39:56,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:56,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:56,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:39:57,381 INFO L124 PetriNetUnfolderBase]: 687/1253 cut-off events. [2024-06-21 20:39:57,381 INFO L125 PetriNetUnfolderBase]: For 219789/219789 co-relation queries the response was YES. [2024-06-21 20:39:57,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12488 conditions, 1253 events. 687/1253 cut-off events. For 219789/219789 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6862 event pairs, 33 based on Foata normal form. 1/1252 useless extension candidates. Maximal degree in co-relation 12317. Up to 977 conditions per place. [2024-06-21 20:39:57,398 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 293 selfloop transitions, 80 changer transitions 0/376 dead transitions. [2024-06-21 20:39:57,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 376 transitions, 6330 flow [2024-06-21 20:39:57,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:39:57,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:39:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 20:39:57,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 20:39:57,399 INFO L175 Difference]: Start difference. First operand has 362 places, 353 transitions, 4841 flow. Second operand 11 states and 141 transitions. [2024-06-21 20:39:57,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 376 transitions, 6330 flow [2024-06-21 20:39:58,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 376 transitions, 6090 flow, removed 92 selfloop flow, removed 5 redundant places. [2024-06-21 20:39:58,236 INFO L231 Difference]: Finished difference. Result has 371 places, 360 transitions, 5082 flow [2024-06-21 20:39:58,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4663, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5082, PETRI_PLACES=371, PETRI_TRANSITIONS=360} [2024-06-21 20:39:58,236 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-21 20:39:58,236 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 360 transitions, 5082 flow [2024-06-21 20:39:58,236 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) [2024-06-21 20:39:58,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:39:58,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:39:58,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 20:39:58,236 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)] === [2024-06-21 20:39:58,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:39:58,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1397468075, now seen corresponding path program 7 times [2024-06-21 20:39:58,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:39:58,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904479049] [2024-06-21 20:39:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:39:58,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:39:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:39:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:39:59,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:39:59,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904479049] [2024-06-21 20:39:59,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904479049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:39:59,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:39:59,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:39:59,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610459088] [2024-06-21 20:39:59,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:39:59,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:39:59,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:39:59,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:39:59,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:39:59,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:39:59,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 360 transitions, 5082 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) [2024-06-21 20:39:59,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:39:59,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:39:59,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:00,141 INFO L124 PetriNetUnfolderBase]: 685/1250 cut-off events. [2024-06-21 20:40:00,141 INFO L125 PetriNetUnfolderBase]: For 215912/215912 co-relation queries the response was YES. [2024-06-21 20:40:00,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12424 conditions, 1250 events. 685/1250 cut-off events. For 215912/215912 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6828 event pairs, 35 based on Foata normal form. 1/1249 useless extension candidates. Maximal degree in co-relation 12248. Up to 1056 conditions per place. [2024-06-21 20:40:00,157 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 314 selfloop transitions, 57 changer transitions 0/374 dead transitions. [2024-06-21 20:40:00,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 374 transitions, 5858 flow [2024-06-21 20:40:00,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:00,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 20:40:00,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 20:40:00,158 INFO L175 Difference]: Start difference. First operand has 371 places, 360 transitions, 5082 flow. Second operand 11 states and 138 transitions. [2024-06-21 20:40:00,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 374 transitions, 5858 flow [2024-06-21 20:40:00,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 374 transitions, 5646 flow, removed 78 selfloop flow, removed 5 redundant places. [2024-06-21 20:40:00,882 INFO L231 Difference]: Finished difference. Result has 377 places, 360 transitions, 4989 flow [2024-06-21 20:40:00,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4870, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4989, PETRI_PLACES=377, PETRI_TRANSITIONS=360} [2024-06-21 20:40:00,882 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-21 20:40:00,882 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 360 transitions, 4989 flow [2024-06-21 20:40:00,882 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) [2024-06-21 20:40:00,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:00,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:00,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 20:40:00,883 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)] === [2024-06-21 20:40:00,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:00,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1390974815, now seen corresponding path program 8 times [2024-06-21 20:40:00,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:00,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748482450] [2024-06-21 20:40:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:00,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:01,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:01,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748482450] [2024-06-21 20:40:01,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748482450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:01,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:01,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:01,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817637554] [2024-06-21 20:40:01,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:01,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:01,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:01,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:01,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:01,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:01,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 360 transitions, 4989 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) [2024-06-21 20:40:01,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:01,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:01,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:02,516 INFO L124 PetriNetUnfolderBase]: 686/1252 cut-off events. [2024-06-21 20:40:02,516 INFO L125 PetriNetUnfolderBase]: For 218028/218028 co-relation queries the response was YES. [2024-06-21 20:40:02,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12294 conditions, 1252 events. 686/1252 cut-off events. For 218028/218028 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6861 event pairs, 33 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 12116. Up to 912 conditions per place. [2024-06-21 20:40:02,528 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 278 selfloop transitions, 98 changer transitions 0/379 dead transitions. [2024-06-21 20:40:02,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 379 transitions, 6327 flow [2024-06-21 20:40:02,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:02,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:02,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 20:40:02,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 20:40:02,529 INFO L175 Difference]: Start difference. First operand has 377 places, 360 transitions, 4989 flow. Second operand 11 states and 144 transitions. [2024-06-21 20:40:02,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 379 transitions, 6327 flow [2024-06-21 20:40:03,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 379 transitions, 6127 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-06-21 20:40:03,277 INFO L231 Difference]: Finished difference. Result has 378 places, 362 transitions, 5065 flow [2024-06-21 20:40:03,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4795, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5065, PETRI_PLACES=378, PETRI_TRANSITIONS=362} [2024-06-21 20:40:03,278 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-21 20:40:03,278 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 362 transitions, 5065 flow [2024-06-21 20:40:03,278 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) [2024-06-21 20:40:03,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:03,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:03,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 20:40:03,278 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)] === [2024-06-21 20:40:03,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:03,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1650229869, now seen corresponding path program 1 times [2024-06-21 20:40:03,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:03,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600934283] [2024-06-21 20:40:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:03,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:04,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:04,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600934283] [2024-06-21 20:40:04,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600934283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:04,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:04,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:04,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253197015] [2024-06-21 20:40:04,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:04,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:04,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:04,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:04,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:04,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:04,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 362 transitions, 5065 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) [2024-06-21 20:40:04,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:04,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:04,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:05,113 INFO L124 PetriNetUnfolderBase]: 690/1258 cut-off events. [2024-06-21 20:40:05,113 INFO L125 PetriNetUnfolderBase]: For 223036/223036 co-relation queries the response was YES. [2024-06-21 20:40:05,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 1258 events. 690/1258 cut-off events. For 223036/223036 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6886 event pairs, 36 based on Foata normal form. 2/1258 useless extension candidates. Maximal degree in co-relation 12243. Up to 1113 conditions per place. [2024-06-21 20:40:05,129 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 333 selfloop transitions, 42 changer transitions 0/378 dead transitions. [2024-06-21 20:40:05,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 378 transitions, 5889 flow [2024-06-21 20:40:05,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 20:40:05,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-21 20:40:05,129 INFO L175 Difference]: Start difference. First operand has 378 places, 362 transitions, 5065 flow. Second operand 11 states and 131 transitions. [2024-06-21 20:40:05,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 378 transitions, 5889 flow [2024-06-21 20:40:05,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 378 transitions, 5672 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-21 20:40:05,900 INFO L231 Difference]: Finished difference. Result has 381 places, 363 transitions, 4978 flow [2024-06-21 20:40:05,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4848, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4978, PETRI_PLACES=381, PETRI_TRANSITIONS=363} [2024-06-21 20:40:05,901 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-21 20:40:05,901 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 363 transitions, 4978 flow [2024-06-21 20:40:05,901 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) [2024-06-21 20:40:05,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:05,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:05,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 20:40:05,901 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)] === [2024-06-21 20:40:05,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:05,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1156381027, now seen corresponding path program 5 times [2024-06-21 20:40:05,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:05,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423781486] [2024-06-21 20:40:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:05,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:06,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:06,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423781486] [2024-06-21 20:40:06,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423781486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:06,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:06,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:40:06,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557613178] [2024-06-21 20:40:06,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:06,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:40:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:06,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:40:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:40:06,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:06,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 363 transitions, 4978 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) [2024-06-21 20:40:06,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:06,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:06,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:07,229 INFO L124 PetriNetUnfolderBase]: 694/1266 cut-off events. [2024-06-21 20:40:07,230 INFO L125 PetriNetUnfolderBase]: For 226276/226276 co-relation queries the response was YES. [2024-06-21 20:40:07,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12370 conditions, 1266 events. 694/1266 cut-off events. For 226276/226276 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6957 event pairs, 37 based on Foata normal form. 2/1266 useless extension candidates. Maximal degree in co-relation 12190. Up to 1067 conditions per place. [2024-06-21 20:40:07,243 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 319 selfloop transitions, 56 changer transitions 0/378 dead transitions. [2024-06-21 20:40:07,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 378 transitions, 5820 flow [2024-06-21 20:40:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:40:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:40:07,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 20:40:07,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 20:40:07,244 INFO L175 Difference]: Start difference. First operand has 381 places, 363 transitions, 4978 flow. Second operand 10 states and 123 transitions. [2024-06-21 20:40:07,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 378 transitions, 5820 flow [2024-06-21 20:40:07,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 378 transitions, 5711 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 20:40:07,938 INFO L231 Difference]: Finished difference. Result has 383 places, 366 transitions, 5052 flow [2024-06-21 20:40:07,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4869, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5052, PETRI_PLACES=383, PETRI_TRANSITIONS=366} [2024-06-21 20:40:07,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-21 20:40:07,938 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 366 transitions, 5052 flow [2024-06-21 20:40:07,938 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) [2024-06-21 20:40:07,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:07,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:07,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 20:40:07,938 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)] === [2024-06-21 20:40:07,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:07,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1384706195, now seen corresponding path program 2 times [2024-06-21 20:40:07,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:07,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959120549] [2024-06-21 20:40:07,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:07,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:09,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:09,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959120549] [2024-06-21 20:40:09,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959120549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:09,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:09,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:09,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870780437] [2024-06-21 20:40:09,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:09,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:09,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:09,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:09,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:09,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:09,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 366 transitions, 5052 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) [2024-06-21 20:40:09,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:09,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:09,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:09,862 INFO L124 PetriNetUnfolderBase]: 698/1272 cut-off events. [2024-06-21 20:40:09,862 INFO L125 PetriNetUnfolderBase]: For 230122/230122 co-relation queries the response was YES. [2024-06-21 20:40:09,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12467 conditions, 1272 events. 698/1272 cut-off events. For 230122/230122 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6986 event pairs, 36 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 12286. Up to 1102 conditions per place. [2024-06-21 20:40:09,878 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 328 selfloop transitions, 50 changer transitions 0/381 dead transitions. [2024-06-21 20:40:09,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 381 transitions, 5896 flow [2024-06-21 20:40:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 20:40:09,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 20:40:09,879 INFO L175 Difference]: Start difference. First operand has 383 places, 366 transitions, 5052 flow. Second operand 11 states and 133 transitions. [2024-06-21 20:40:09,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 381 transitions, 5896 flow [2024-06-21 20:40:10,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 381 transitions, 5755 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 20:40:10,685 INFO L231 Difference]: Finished difference. Result has 387 places, 368 transitions, 5075 flow [2024-06-21 20:40:10,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4911, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5075, PETRI_PLACES=387, PETRI_TRANSITIONS=368} [2024-06-21 20:40:10,685 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-21 20:40:10,685 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 368 transitions, 5075 flow [2024-06-21 20:40:10,685 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) [2024-06-21 20:40:10,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:10,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:10,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 20:40:10,685 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)] === [2024-06-21 20:40:10,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1163052227, now seen corresponding path program 9 times [2024-06-21 20:40:10,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:10,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083521712] [2024-06-21 20:40:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:10,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:11,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:11,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083521712] [2024-06-21 20:40:11,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083521712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:11,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:11,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:11,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818074868] [2024-06-21 20:40:11,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:11,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:11,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:11,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:11,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:11,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:11,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 368 transitions, 5075 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) [2024-06-21 20:40:11,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:11,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:11,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:12,351 INFO L124 PetriNetUnfolderBase]: 706/1289 cut-off events. [2024-06-21 20:40:12,351 INFO L125 PetriNetUnfolderBase]: For 234431/234431 co-relation queries the response was YES. [2024-06-21 20:40:12,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12782 conditions, 1289 events. 706/1289 cut-off events. For 234431/234431 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7114 event pairs, 38 based on Foata normal form. 1/1288 useless extension candidates. Maximal degree in co-relation 12600. Up to 1044 conditions per place. [2024-06-21 20:40:12,368 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 311 selfloop transitions, 71 changer transitions 0/385 dead transitions. [2024-06-21 20:40:12,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 385 transitions, 6275 flow [2024-06-21 20:40:12,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 20:40:12,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 20:40:12,369 INFO L175 Difference]: Start difference. First operand has 387 places, 368 transitions, 5075 flow. Second operand 11 states and 140 transitions. [2024-06-21 20:40:12,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 385 transitions, 6275 flow [2024-06-21 20:40:13,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 385 transitions, 6042 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-21 20:40:13,157 INFO L231 Difference]: Finished difference. Result has 388 places, 372 transitions, 5157 flow [2024-06-21 20:40:13,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4842, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5157, PETRI_PLACES=388, PETRI_TRANSITIONS=372} [2024-06-21 20:40:13,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-21 20:40:13,157 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 372 transitions, 5157 flow [2024-06-21 20:40:13,157 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) [2024-06-21 20:40:13,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:13,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:13,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 20:40:13,158 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)] === [2024-06-21 20:40:13,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:13,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1163060845, now seen corresponding path program 3 times [2024-06-21 20:40:13,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:13,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530305222] [2024-06-21 20:40:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:13,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:14,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:14,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530305222] [2024-06-21 20:40:14,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530305222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:14,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:14,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:14,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237467176] [2024-06-21 20:40:14,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:14,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:14,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:14,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:14,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:14,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:14,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 372 transitions, 5157 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) [2024-06-21 20:40:14,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:14,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:14,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:14,941 INFO L124 PetriNetUnfolderBase]: 709/1297 cut-off events. [2024-06-21 20:40:14,942 INFO L125 PetriNetUnfolderBase]: For 238378/238378 co-relation queries the response was YES. [2024-06-21 20:40:14,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12761 conditions, 1297 events. 709/1297 cut-off events. For 238378/238378 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7170 event pairs, 37 based on Foata normal form. 1/1296 useless extension candidates. Maximal degree in co-relation 12580. Up to 1047 conditions per place. [2024-06-21 20:40:14,958 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 307 selfloop transitions, 77 changer transitions 0/387 dead transitions. [2024-06-21 20:40:14,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 387 transitions, 6249 flow [2024-06-21 20:40:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 20:40:14,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 20:40:14,958 INFO L175 Difference]: Start difference. First operand has 388 places, 372 transitions, 5157 flow. Second operand 11 states and 142 transitions. [2024-06-21 20:40:14,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 387 transitions, 6249 flow [2024-06-21 20:40:15,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 387 transitions, 6064 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-21 20:40:15,907 INFO L231 Difference]: Finished difference. Result has 392 places, 374 transitions, 5181 flow [2024-06-21 20:40:15,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4972, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5181, PETRI_PLACES=392, PETRI_TRANSITIONS=374} [2024-06-21 20:40:15,907 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-21 20:40:15,907 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 374 transitions, 5181 flow [2024-06-21 20:40:15,908 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) [2024-06-21 20:40:15,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:15,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:15,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 20:40:15,908 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)] === [2024-06-21 20:40:15,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:15,908 INFO L85 PathProgramCache]: Analyzing trace with hash 897301743, now seen corresponding path program 4 times [2024-06-21 20:40:15,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:15,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329162540] [2024-06-21 20:40:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:15,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:17,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:17,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329162540] [2024-06-21 20:40:17,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329162540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:17,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:17,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:17,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217977287] [2024-06-21 20:40:17,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:17,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:17,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:17,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:17,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:17,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:17,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 374 transitions, 5181 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) [2024-06-21 20:40:17,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:17,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:17,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:17,849 INFO L124 PetriNetUnfolderBase]: 705/1288 cut-off events. [2024-06-21 20:40:17,849 INFO L125 PetriNetUnfolderBase]: For 233556/233556 co-relation queries the response was YES. [2024-06-21 20:40:17,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12495 conditions, 1288 events. 705/1288 cut-off events. For 233556/233556 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7117 event pairs, 37 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 12312. Up to 1073 conditions per place. [2024-06-21 20:40:17,867 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 320 selfloop transitions, 63 changer transitions 0/386 dead transitions. [2024-06-21 20:40:17,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 386 transitions, 5975 flow [2024-06-21 20:40:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 20:40:17,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 20:40:17,868 INFO L175 Difference]: Start difference. First operand has 392 places, 374 transitions, 5181 flow. Second operand 11 states and 137 transitions. [2024-06-21 20:40:17,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 386 transitions, 5975 flow [2024-06-21 20:40:18,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 386 transitions, 5680 flow, removed 46 selfloop flow, removed 10 redundant places. [2024-06-21 20:40:18,888 INFO L231 Difference]: Finished difference. Result has 393 places, 374 transitions, 5018 flow [2024-06-21 20:40:18,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4886, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5018, PETRI_PLACES=393, PETRI_TRANSITIONS=374} [2024-06-21 20:40:18,888 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-21 20:40:18,888 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 374 transitions, 5018 flow [2024-06-21 20:40:18,888 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) [2024-06-21 20:40:18,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:18,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:18,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 20:40:18,889 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)] === [2024-06-21 20:40:18,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:18,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1392749765, now seen corresponding path program 3 times [2024-06-21 20:40:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:18,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797410855] [2024-06-21 20:40:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:18,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:20,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:20,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797410855] [2024-06-21 20:40:20,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797410855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:20,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:20,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:20,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070186098] [2024-06-21 20:40:20,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:20,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:20,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:20,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:20,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 374 transitions, 5018 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) [2024-06-21 20:40:20,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:20,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:20,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:20,831 INFO L124 PetriNetUnfolderBase]: 712/1301 cut-off events. [2024-06-21 20:40:20,831 INFO L125 PetriNetUnfolderBase]: For 236813/236813 co-relation queries the response was YES. [2024-06-21 20:40:20,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12489 conditions, 1301 events. 712/1301 cut-off events. For 236813/236813 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7214 event pairs, 37 based on Foata normal form. 2/1301 useless extension candidates. Maximal degree in co-relation 12306. Up to 1127 conditions per place. [2024-06-21 20:40:20,848 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 333 selfloop transitions, 54 changer transitions 0/390 dead transitions. [2024-06-21 20:40:20,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 390 transitions, 5882 flow [2024-06-21 20:40:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:20,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 20:40:20,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:40:20,849 INFO L175 Difference]: Start difference. First operand has 393 places, 374 transitions, 5018 flow. Second operand 11 states and 132 transitions. [2024-06-21 20:40:20,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 390 transitions, 5882 flow [2024-06-21 20:40:21,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 390 transitions, 5733 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 20:40:21,730 INFO L231 Difference]: Finished difference. Result has 395 places, 377 transitions, 5050 flow [2024-06-21 20:40:21,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4869, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5050, PETRI_PLACES=395, PETRI_TRANSITIONS=377} [2024-06-21 20:40:21,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-21 20:40:21,730 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 377 transitions, 5050 flow [2024-06-21 20:40:21,730 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) [2024-06-21 20:40:21,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:21,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:21,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 20:40:21,731 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)] === [2024-06-21 20:40:21,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:21,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1392740837, now seen corresponding path program 10 times [2024-06-21 20:40:21,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:21,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438334869] [2024-06-21 20:40:21,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:21,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:22,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:22,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438334869] [2024-06-21 20:40:22,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438334869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:22,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:22,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:22,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881337479] [2024-06-21 20:40:22,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:22,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:22,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:22,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:22,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:22,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:22,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 377 transitions, 5050 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) [2024-06-21 20:40:22,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:22,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:22,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:23,229 INFO L124 PetriNetUnfolderBase]: 733/1341 cut-off events. [2024-06-21 20:40:23,230 INFO L125 PetriNetUnfolderBase]: For 264997/264997 co-relation queries the response was YES. [2024-06-21 20:40:23,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13460 conditions, 1341 events. 733/1341 cut-off events. For 264997/264997 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7503 event pairs, 39 based on Foata normal form. 2/1341 useless extension candidates. Maximal degree in co-relation 13275. Up to 800 conditions per place. [2024-06-21 20:40:23,248 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 258 selfloop transitions, 139 changer transitions 0/400 dead transitions. [2024-06-21 20:40:23,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 400 transitions, 6707 flow [2024-06-21 20:40:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 20:40:23,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 20:40:23,249 INFO L175 Difference]: Start difference. First operand has 395 places, 377 transitions, 5050 flow. Second operand 11 states and 146 transitions. [2024-06-21 20:40:23,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 400 transitions, 6707 flow [2024-06-21 20:40:24,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 400 transitions, 6559 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-21 20:40:24,321 INFO L231 Difference]: Finished difference. Result has 398 places, 384 transitions, 5469 flow [2024-06-21 20:40:24,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4902, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5469, PETRI_PLACES=398, PETRI_TRANSITIONS=384} [2024-06-21 20:40:24,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-21 20:40:24,322 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 384 transitions, 5469 flow [2024-06-21 20:40:24,322 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) [2024-06-21 20:40:24,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:24,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:24,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 20:40:24,322 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)] === [2024-06-21 20:40:24,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1156565477, now seen corresponding path program 11 times [2024-06-21 20:40:24,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:24,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811278899] [2024-06-21 20:40:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:24,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:25,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:25,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811278899] [2024-06-21 20:40:25,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811278899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:25,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:25,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:25,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215049241] [2024-06-21 20:40:25,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:25,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:25,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:25,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:25,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:25,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:25,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 384 transitions, 5469 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) [2024-06-21 20:40:25,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:25,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:25,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:25,914 INFO L124 PetriNetUnfolderBase]: 741/1354 cut-off events. [2024-06-21 20:40:25,914 INFO L125 PetriNetUnfolderBase]: For 271120/271120 co-relation queries the response was YES. [2024-06-21 20:40:25,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13967 conditions, 1354 events. 741/1354 cut-off events. For 271120/271120 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7589 event pairs, 39 based on Foata normal form. 1/1353 useless extension candidates. Maximal degree in co-relation 13781. Up to 1129 conditions per place. [2024-06-21 20:40:25,933 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 333 selfloop transitions, 65 changer transitions 0/401 dead transitions. [2024-06-21 20:40:25,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 401 transitions, 6683 flow [2024-06-21 20:40:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 20:40:25,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 20:40:25,935 INFO L175 Difference]: Start difference. First operand has 398 places, 384 transitions, 5469 flow. Second operand 11 states and 137 transitions. [2024-06-21 20:40:25,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 401 transitions, 6683 flow [2024-06-21 20:40:26,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 401 transitions, 6424 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-21 20:40:26,911 INFO L231 Difference]: Finished difference. Result has 403 places, 388 transitions, 5485 flow [2024-06-21 20:40:26,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5210, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5485, PETRI_PLACES=403, PETRI_TRANSITIONS=388} [2024-06-21 20:40:26,911 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-21 20:40:26,911 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 388 transitions, 5485 flow [2024-06-21 20:40:26,911 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) [2024-06-21 20:40:26,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:26,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:26,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 20:40:26,912 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)] === [2024-06-21 20:40:26,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:26,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1384460117, now seen corresponding path program 12 times [2024-06-21 20:40:26,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:26,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409274497] [2024-06-21 20:40:26,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:26,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:27,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:27,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409274497] [2024-06-21 20:40:27,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409274497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:27,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:27,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:27,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640994762] [2024-06-21 20:40:27,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:27,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:27,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:27,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:27,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:28,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:28,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 388 transitions, 5485 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) [2024-06-21 20:40:28,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:28,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:28,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:28,590 INFO L124 PetriNetUnfolderBase]: 744/1363 cut-off events. [2024-06-21 20:40:28,590 INFO L125 PetriNetUnfolderBase]: For 274807/274807 co-relation queries the response was YES. [2024-06-21 20:40:28,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13934 conditions, 1363 events. 744/1363 cut-off events. For 274807/274807 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7670 event pairs, 38 based on Foata normal form. 1/1362 useless extension candidates. Maximal degree in co-relation 13746. Up to 956 conditions per place. [2024-06-21 20:40:28,608 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 290 selfloop transitions, 114 changer transitions 0/407 dead transitions. [2024-06-21 20:40:28,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 407 transitions, 7006 flow [2024-06-21 20:40:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:28,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 20:40:28,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 20:40:28,609 INFO L175 Difference]: Start difference. First operand has 403 places, 388 transitions, 5485 flow. Second operand 11 states and 142 transitions. [2024-06-21 20:40:28,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 407 transitions, 7006 flow [2024-06-21 20:40:29,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 407 transitions, 6868 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-21 20:40:29,564 INFO L231 Difference]: Finished difference. Result has 408 places, 393 transitions, 5769 flow [2024-06-21 20:40:29,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5347, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5769, PETRI_PLACES=408, PETRI_TRANSITIONS=393} [2024-06-21 20:40:29,565 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 377 predicate places. [2024-06-21 20:40:29,565 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 393 transitions, 5769 flow [2024-06-21 20:40:29,565 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) [2024-06-21 20:40:29,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:29,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:29,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 20:40:29,565 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)] === [2024-06-21 20:40:29,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:29,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1162821587, now seen corresponding path program 13 times [2024-06-21 20:40:29,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:29,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845659057] [2024-06-21 20:40:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:29,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:30,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:30,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845659057] [2024-06-21 20:40:30,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845659057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:30,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:30,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:30,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969008514] [2024-06-21 20:40:30,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:30,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:30,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:30,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:30,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:30,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:30,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 393 transitions, 5769 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) [2024-06-21 20:40:30,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:30,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:30,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:31,274 INFO L124 PetriNetUnfolderBase]: 747/1368 cut-off events. [2024-06-21 20:40:31,274 INFO L125 PetriNetUnfolderBase]: For 279410/279410 co-relation queries the response was YES. [2024-06-21 20:40:31,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14232 conditions, 1368 events. 747/1368 cut-off events. For 279410/279410 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7693 event pairs, 38 based on Foata normal form. 1/1367 useless extension candidates. Maximal degree in co-relation 14041. Up to 1109 conditions per place. [2024-06-21 20:40:31,292 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 331 selfloop transitions, 75 changer transitions 0/409 dead transitions. [2024-06-21 20:40:31,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 409 transitions, 7201 flow [2024-06-21 20:40:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:31,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 20:40:31,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:40:31,293 INFO L175 Difference]: Start difference. First operand has 408 places, 393 transitions, 5769 flow. Second operand 11 states and 143 transitions. [2024-06-21 20:40:31,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 409 transitions, 7201 flow [2024-06-21 20:40:32,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 409 transitions, 6739 flow, removed 71 selfloop flow, removed 10 redundant places. [2024-06-21 20:40:32,287 INFO L231 Difference]: Finished difference. Result has 409 places, 395 transitions, 5538 flow [2024-06-21 20:40:32,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5309, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5538, PETRI_PLACES=409, PETRI_TRANSITIONS=395} [2024-06-21 20:40:32,287 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-21 20:40:32,287 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 395 transitions, 5538 flow [2024-06-21 20:40:32,287 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) [2024-06-21 20:40:32,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:32,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:32,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 20:40:32,288 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)] === [2024-06-21 20:40:32,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:32,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1133774083, now seen corresponding path program 4 times [2024-06-21 20:40:32,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:32,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61597536] [2024-06-21 20:40:32,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:32,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:33,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61597536] [2024-06-21 20:40:33,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61597536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:33,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:33,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:33,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551919532] [2024-06-21 20:40:33,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:33,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:33,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:33,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:33,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 395 transitions, 5538 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) [2024-06-21 20:40:33,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:33,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:33,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:34,384 INFO L124 PetriNetUnfolderBase]: 751/1376 cut-off events. [2024-06-21 20:40:34,384 INFO L125 PetriNetUnfolderBase]: For 290996/290996 co-relation queries the response was YES. [2024-06-21 20:40:34,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14000 conditions, 1376 events. 751/1376 cut-off events. For 290996/290996 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7795 event pairs, 38 based on Foata normal form. 2/1376 useless extension candidates. Maximal degree in co-relation 13810. Up to 1171 conditions per place. [2024-06-21 20:40:34,402 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 339 selfloop transitions, 67 changer transitions 0/409 dead transitions. [2024-06-21 20:40:34,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 409 transitions, 6424 flow [2024-06-21 20:40:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:34,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 20:40:34,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 20:40:34,404 INFO L175 Difference]: Start difference. First operand has 409 places, 395 transitions, 5538 flow. Second operand 11 states and 133 transitions. [2024-06-21 20:40:34,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 409 transitions, 6424 flow [2024-06-21 20:40:35,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 409 transitions, 6135 flow, removed 44 selfloop flow, removed 10 redundant places. [2024-06-21 20:40:35,492 INFO L231 Difference]: Finished difference. Result has 410 places, 396 transitions, 5433 flow [2024-06-21 20:40:35,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5249, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5433, PETRI_PLACES=410, PETRI_TRANSITIONS=396} [2024-06-21 20:40:35,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-21 20:40:35,493 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 396 transitions, 5433 flow [2024-06-21 20:40:35,493 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) [2024-06-21 20:40:35,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:35,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:35,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 20:40:35,493 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)] === [2024-06-21 20:40:35,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:35,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1133784313, now seen corresponding path program 5 times [2024-06-21 20:40:35,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:35,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199333311] [2024-06-21 20:40:35,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:35,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:36,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:36,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199333311] [2024-06-21 20:40:36,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199333311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:36,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:36,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:36,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475923385] [2024-06-21 20:40:36,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:36,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:36,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:36,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:36,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:37,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:37,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 396 transitions, 5433 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) [2024-06-21 20:40:37,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:37,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:37,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:37,491 INFO L124 PetriNetUnfolderBase]: 762/1395 cut-off events. [2024-06-21 20:40:37,491 INFO L125 PetriNetUnfolderBase]: For 313508/313508 co-relation queries the response was YES. [2024-06-21 20:40:37,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14354 conditions, 1395 events. 762/1395 cut-off events. For 313508/313508 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7878 event pairs, 37 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 14164. Up to 1147 conditions per place. [2024-06-21 20:40:37,511 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 338 selfloop transitions, 72 changer transitions 0/413 dead transitions. [2024-06-21 20:40:37,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 413 transitions, 6639 flow [2024-06-21 20:40:37,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 20:40:37,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 20:40:37,512 INFO L175 Difference]: Start difference. First operand has 410 places, 396 transitions, 5433 flow. Second operand 11 states and 135 transitions. [2024-06-21 20:40:37,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 413 transitions, 6639 flow [2024-06-21 20:40:38,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 413 transitions, 6412 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-21 20:40:38,540 INFO L231 Difference]: Finished difference. Result has 410 places, 398 transitions, 5448 flow [2024-06-21 20:40:38,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5206, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5448, PETRI_PLACES=410, PETRI_TRANSITIONS=398} [2024-06-21 20:40:38,541 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-21 20:40:38,541 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 398 transitions, 5448 flow [2024-06-21 20:40:38,541 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) [2024-06-21 20:40:38,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:38,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:38,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 20:40:38,541 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)] === [2024-06-21 20:40:38,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1125202645, now seen corresponding path program 14 times [2024-06-21 20:40:38,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:38,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619130436] [2024-06-21 20:40:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:38,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:39,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:39,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619130436] [2024-06-21 20:40:39,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619130436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:39,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:39,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:39,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097338001] [2024-06-21 20:40:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:39,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:39,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:39,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:39,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:39,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:39,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 398 transitions, 5448 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) [2024-06-21 20:40:39,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:39,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:39,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:40,342 INFO L124 PetriNetUnfolderBase]: 921/1689 cut-off events. [2024-06-21 20:40:40,342 INFO L125 PetriNetUnfolderBase]: For 336477/336477 co-relation queries the response was YES. [2024-06-21 20:40:40,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16636 conditions, 1689 events. 921/1689 cut-off events. For 336477/336477 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10136 event pairs, 44 based on Foata normal form. 1/1685 useless extension candidates. Maximal degree in co-relation 16447. Up to 1340 conditions per place. [2024-06-21 20:40:40,365 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 406 selfloop transitions, 99 changer transitions 0/508 dead transitions. [2024-06-21 20:40:40,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 508 transitions, 8215 flow [2024-06-21 20:40:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:40:40,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:40:40,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-21 20:40:40,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-21 20:40:40,365 INFO L175 Difference]: Start difference. First operand has 410 places, 398 transitions, 5448 flow. Second operand 12 states and 155 transitions. [2024-06-21 20:40:40,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 508 transitions, 8215 flow [2024-06-21 20:40:41,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 508 transitions, 8045 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-21 20:40:41,429 INFO L231 Difference]: Finished difference. Result has 419 places, 462 transitions, 6522 flow [2024-06-21 20:40:41,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5297, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6522, PETRI_PLACES=419, PETRI_TRANSITIONS=462} [2024-06-21 20:40:41,430 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-21 20:40:41,430 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 462 transitions, 6522 flow [2024-06-21 20:40:41,430 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) [2024-06-21 20:40:41,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:41,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:41,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 20:40:41,430 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)] === [2024-06-21 20:40:41,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1384697267, now seen corresponding path program 15 times [2024-06-21 20:40:41,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:41,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460622511] [2024-06-21 20:40:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:41,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:42,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:42,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460622511] [2024-06-21 20:40:42,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460622511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:42,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:42,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:42,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163996847] [2024-06-21 20:40:42,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:42,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:42,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:42,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:42,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:42,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 462 transitions, 6522 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) [2024-06-21 20:40:42,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:42,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:42,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:43,079 INFO L124 PetriNetUnfolderBase]: 935/1718 cut-off events. [2024-06-21 20:40:43,080 INFO L125 PetriNetUnfolderBase]: For 368980/368980 co-relation queries the response was YES. [2024-06-21 20:40:43,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17497 conditions, 1718 events. 935/1718 cut-off events. For 368980/368980 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10334 event pairs, 41 based on Foata normal form. 3/1719 useless extension candidates. Maximal degree in co-relation 17302. Up to 914 conditions per place. [2024-06-21 20:40:43,104 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 315 selfloop transitions, 171 changer transitions 0/489 dead transitions. [2024-06-21 20:40:43,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 489 transitions, 8921 flow [2024-06-21 20:40:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-21 20:40:43,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-21 20:40:43,105 INFO L175 Difference]: Start difference. First operand has 419 places, 462 transitions, 6522 flow. Second operand 11 states and 152 transitions. [2024-06-21 20:40:43,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 489 transitions, 8921 flow [2024-06-21 20:40:44,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 489 transitions, 8764 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-21 20:40:44,439 INFO L231 Difference]: Finished difference. Result has 423 places, 470 transitions, 7029 flow [2024-06-21 20:40:44,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6365, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7029, PETRI_PLACES=423, PETRI_TRANSITIONS=470} [2024-06-21 20:40:44,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 392 predicate places. [2024-06-21 20:40:44,439 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 470 transitions, 7029 flow [2024-06-21 20:40:44,439 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) [2024-06-21 20:40:44,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:44,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:44,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 20:40:44,439 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)] === [2024-06-21 20:40:44,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1156558967, now seen corresponding path program 16 times [2024-06-21 20:40:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:44,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765212] [2024-06-21 20:40:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:45,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765212] [2024-06-21 20:40:45,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:45,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:45,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:45,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447211583] [2024-06-21 20:40:45,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:45,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:45,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:45,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:45,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:45,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:45,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 470 transitions, 7029 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) [2024-06-21 20:40:45,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:45,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:45,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:46,454 INFO L124 PetriNetUnfolderBase]: 931/1712 cut-off events. [2024-06-21 20:40:46,454 INFO L125 PetriNetUnfolderBase]: For 349494/349494 co-relation queries the response was YES. [2024-06-21 20:40:46,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17444 conditions, 1712 events. 931/1712 cut-off events. For 349494/349494 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10301 event pairs, 41 based on Foata normal form. 2/1712 useless extension candidates. Maximal degree in co-relation 17249. Up to 1433 conditions per place. [2024-06-21 20:40:46,479 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 406 selfloop transitions, 73 changer transitions 0/482 dead transitions. [2024-06-21 20:40:46,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 482 transitions, 8015 flow [2024-06-21 20:40:46,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:46,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 20:40:46,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 20:40:46,480 INFO L175 Difference]: Start difference. First operand has 423 places, 470 transitions, 7029 flow. Second operand 11 states and 137 transitions. [2024-06-21 20:40:46,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 482 transitions, 8015 flow [2024-06-21 20:40:47,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 482 transitions, 7563 flow, removed 125 selfloop flow, removed 6 redundant places. [2024-06-21 20:40:47,620 INFO L231 Difference]: Finished difference. Result has 428 places, 470 transitions, 6730 flow [2024-06-21 20:40:47,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6577, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6730, PETRI_PLACES=428, PETRI_TRANSITIONS=470} [2024-06-21 20:40:47,621 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-21 20:40:47,621 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 470 transitions, 6730 flow [2024-06-21 20:40:47,621 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) [2024-06-21 20:40:47,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:47,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:47,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 20:40:47,621 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)] === [2024-06-21 20:40:47,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:47,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1162815077, now seen corresponding path program 17 times [2024-06-21 20:40:47,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:47,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284715690] [2024-06-21 20:40:47,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:47,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:48,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:48,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284715690] [2024-06-21 20:40:48,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284715690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:48,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:48,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:48,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531543234] [2024-06-21 20:40:48,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:48,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:48,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:48,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:48,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:48,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:48,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 470 transitions, 6730 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) [2024-06-21 20:40:48,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:48,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:48,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:49,505 INFO L124 PetriNetUnfolderBase]: 927/1704 cut-off events. [2024-06-21 20:40:49,506 INFO L125 PetriNetUnfolderBase]: For 333464/333464 co-relation queries the response was YES. [2024-06-21 20:40:49,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16730 conditions, 1704 events. 927/1704 cut-off events. For 333464/333464 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10245 event pairs, 41 based on Foata normal form. 2/1704 useless extension candidates. Maximal degree in co-relation 16534. Up to 1373 conditions per place. [2024-06-21 20:40:49,531 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 385 selfloop transitions, 94 changer transitions 0/482 dead transitions. [2024-06-21 20:40:49,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 482 transitions, 7716 flow [2024-06-21 20:40:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 20:40:49,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 20:40:49,532 INFO L175 Difference]: Start difference. First operand has 428 places, 470 transitions, 6730 flow. Second operand 11 states and 140 transitions. [2024-06-21 20:40:49,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 482 transitions, 7716 flow [2024-06-21 20:40:50,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 482 transitions, 7434 flow, removed 65 selfloop flow, removed 10 redundant places. [2024-06-21 20:40:50,751 INFO L231 Difference]: Finished difference. Result has 429 places, 470 transitions, 6643 flow [2024-06-21 20:40:50,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6448, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6643, PETRI_PLACES=429, PETRI_TRANSITIONS=470} [2024-06-21 20:40:50,752 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-21 20:40:50,752 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 470 transitions, 6643 flow [2024-06-21 20:40:50,752 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) [2024-06-21 20:40:50,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:50,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:50,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 20:40:50,752 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)] === [2024-06-21 20:40:50,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1163052475, now seen corresponding path program 5 times [2024-06-21 20:40:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:50,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912247391] [2024-06-21 20:40:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:50,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:51,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:51,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912247391] [2024-06-21 20:40:51,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912247391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:51,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:51,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:51,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633106229] [2024-06-21 20:40:51,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:51,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:51,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:51,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:51,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:52,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:52,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 470 transitions, 6643 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) [2024-06-21 20:40:52,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:52,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:52,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:52,636 INFO L124 PetriNetUnfolderBase]: 925/1701 cut-off events. [2024-06-21 20:40:52,636 INFO L125 PetriNetUnfolderBase]: For 319139/319139 co-relation queries the response was YES. [2024-06-21 20:40:52,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16516 conditions, 1701 events. 925/1701 cut-off events. For 319139/319139 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10227 event pairs, 41 based on Foata normal form. 1/1700 useless extension candidates. Maximal degree in co-relation 16319. Up to 1386 conditions per place. [2024-06-21 20:40:52,659 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 406 selfloop transitions, 74 changer transitions 0/483 dead transitions. [2024-06-21 20:40:52,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 483 transitions, 7635 flow [2024-06-21 20:40:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 20:40:52,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 20:40:52,660 INFO L175 Difference]: Start difference. First operand has 429 places, 470 transitions, 6643 flow. Second operand 11 states and 140 transitions. [2024-06-21 20:40:52,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 483 transitions, 7635 flow [2024-06-21 20:40:53,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 483 transitions, 7417 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 20:40:53,801 INFO L231 Difference]: Finished difference. Result has 432 places, 470 transitions, 6579 flow [2024-06-21 20:40:53,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6425, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6579, PETRI_PLACES=432, PETRI_TRANSITIONS=470} [2024-06-21 20:40:53,801 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-21 20:40:53,801 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 470 transitions, 6579 flow [2024-06-21 20:40:53,802 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) [2024-06-21 20:40:53,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:53,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:53,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 20:40:53,802 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)] === [2024-06-21 20:40:53,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:53,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1163061155, now seen corresponding path program 6 times [2024-06-21 20:40:53,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:53,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812851533] [2024-06-21 20:40:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:53,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:55,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:55,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812851533] [2024-06-21 20:40:55,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812851533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:55,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:55,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:40:55,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307021974] [2024-06-21 20:40:55,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:55,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:40:55,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:55,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:40:55,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:40:55,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:55,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 470 transitions, 6579 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) [2024-06-21 20:40:55,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:55,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:55,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:55,828 INFO L124 PetriNetUnfolderBase]: 922/1696 cut-off events. [2024-06-21 20:40:55,828 INFO L125 PetriNetUnfolderBase]: For 313883/313883 co-relation queries the response was YES. [2024-06-21 20:40:55,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16177 conditions, 1696 events. 922/1696 cut-off events. For 313883/313883 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10193 event pairs, 45 based on Foata normal form. 2/1696 useless extension candidates. Maximal degree in co-relation 15979. Up to 1509 conditions per place. [2024-06-21 20:40:55,854 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 444 selfloop transitions, 36 changer transitions 0/483 dead transitions. [2024-06-21 20:40:55,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 483 transitions, 7569 flow [2024-06-21 20:40:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:40:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:40:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 20:40:55,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-21 20:40:55,854 INFO L175 Difference]: Start difference. First operand has 432 places, 470 transitions, 6579 flow. Second operand 11 states and 130 transitions. [2024-06-21 20:40:55,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 483 transitions, 7569 flow [2024-06-21 20:40:57,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 483 transitions, 7393 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-21 20:40:57,166 INFO L231 Difference]: Finished difference. Result has 433 places, 470 transitions, 6479 flow [2024-06-21 20:40:57,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6403, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6479, PETRI_PLACES=433, PETRI_TRANSITIONS=470} [2024-06-21 20:40:57,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-21 20:40:57,166 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 470 transitions, 6479 flow [2024-06-21 20:40:57,167 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) [2024-06-21 20:40:57,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:57,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:57,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 20:40:57,167 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)] === [2024-06-21 20:40:57,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:57,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1558136477, now seen corresponding path program 6 times [2024-06-21 20:40:57,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:57,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600102503] [2024-06-21 20:40:57,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:57,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:40:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:40:57,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:40:57,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600102503] [2024-06-21 20:40:57,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600102503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:40:57,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:40:57,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:40:57,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828053189] [2024-06-21 20:40:57,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:40:57,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:40:57,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:40:57,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:40:57,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:40:58,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:40:58,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 470 transitions, 6479 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) [2024-06-21 20:40:58,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:40:58,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:40:58,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:40:58,596 INFO L124 PetriNetUnfolderBase]: 919/1691 cut-off events. [2024-06-21 20:40:58,596 INFO L125 PetriNetUnfolderBase]: For 298814/298814 co-relation queries the response was YES. [2024-06-21 20:40:58,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15753 conditions, 1691 events. 919/1691 cut-off events. For 298814/298814 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10177 event pairs, 48 based on Foata normal form. 2/1688 useless extension candidates. Maximal degree in co-relation 15554. Up to 1435 conditions per place. [2024-06-21 20:40:58,621 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 419 selfloop transitions, 59 changer transitions 0/481 dead transitions. [2024-06-21 20:40:58,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 481 transitions, 7471 flow [2024-06-21 20:40:58,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:40:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:40:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-21 20:40:58,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-21 20:40:58,621 INFO L175 Difference]: Start difference. First operand has 433 places, 470 transitions, 6479 flow. Second operand 10 states and 122 transitions. [2024-06-21 20:40:58,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 481 transitions, 7471 flow [2024-06-21 20:40:59,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 481 transitions, 7379 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 20:40:59,906 INFO L231 Difference]: Finished difference. Result has 433 places, 471 transitions, 6523 flow [2024-06-21 20:40:59,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6387, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6523, PETRI_PLACES=433, PETRI_TRANSITIONS=471} [2024-06-21 20:40:59,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-21 20:40:59,907 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 471 transitions, 6523 flow [2024-06-21 20:40:59,907 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) [2024-06-21 20:40:59,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:40:59,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:40:59,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 20:40:59,907 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)] === [2024-06-21 20:40:59,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:40:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1557958537, now seen corresponding path program 18 times [2024-06-21 20:40:59,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:40:59,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946151955] [2024-06-21 20:40:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:40:59,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:40:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:01,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:01,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946151955] [2024-06-21 20:41:01,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946151955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:01,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:01,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:01,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127980369] [2024-06-21 20:41:01,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:01,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:01,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:01,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:01,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:01,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 471 transitions, 6523 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) [2024-06-21 20:41:01,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:01,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:01,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:01,962 INFO L124 PetriNetUnfolderBase]: 927/1708 cut-off events. [2024-06-21 20:41:01,962 INFO L125 PetriNetUnfolderBase]: For 305070/305070 co-relation queries the response was YES. [2024-06-21 20:41:01,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16175 conditions, 1708 events. 927/1708 cut-off events. For 305070/305070 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 10339 event pairs, 48 based on Foata normal form. 1/1704 useless extension candidates. Maximal degree in co-relation 15975. Up to 1432 conditions per place. [2024-06-21 20:41:01,984 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 416 selfloop transitions, 68 changer transitions 0/487 dead transitions. [2024-06-21 20:41:01,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 487 transitions, 7977 flow [2024-06-21 20:41:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 20:41:01,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 20:41:01,985 INFO L175 Difference]: Start difference. First operand has 433 places, 471 transitions, 6523 flow. Second operand 11 states and 137 transitions. [2024-06-21 20:41:01,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 487 transitions, 7977 flow [2024-06-21 20:41:03,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 487 transitions, 7776 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 20:41:03,212 INFO L231 Difference]: Finished difference. Result has 436 places, 476 transitions, 6662 flow [2024-06-21 20:41:03,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6322, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6662, PETRI_PLACES=436, PETRI_TRANSITIONS=476} [2024-06-21 20:41:03,212 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-21 20:41:03,212 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 476 transitions, 6662 flow [2024-06-21 20:41:03,213 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) [2024-06-21 20:41:03,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:03,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:03,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 20:41:03,213 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)] === [2024-06-21 20:41:03,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:03,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1941652241, now seen corresponding path program 19 times [2024-06-21 20:41:03,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:03,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970446966] [2024-06-21 20:41:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:03,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:04,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:04,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970446966] [2024-06-21 20:41:04,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970446966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:04,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:04,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:04,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623249693] [2024-06-21 20:41:04,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:04,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:04,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:04,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:04,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 476 transitions, 6662 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) [2024-06-21 20:41:04,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:04,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:04,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:05,172 INFO L124 PetriNetUnfolderBase]: 930/1717 cut-off events. [2024-06-21 20:41:05,172 INFO L125 PetriNetUnfolderBase]: For 311301/311301 co-relation queries the response was YES. [2024-06-21 20:41:05,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16282 conditions, 1717 events. 930/1717 cut-off events. For 311301/311301 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 10410 event pairs, 109 based on Foata normal form. 1/1716 useless extension candidates. Maximal degree in co-relation 16080. Up to 1572 conditions per place. [2024-06-21 20:41:05,197 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 467 selfloop transitions, 19 changer transitions 0/489 dead transitions. [2024-06-21 20:41:05,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 489 transitions, 7753 flow [2024-06-21 20:41:05,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:05,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:05,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 20:41:05,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-21 20:41:05,198 INFO L175 Difference]: Start difference. First operand has 436 places, 476 transitions, 6662 flow. Second operand 11 states and 125 transitions. [2024-06-21 20:41:05,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 489 transitions, 7753 flow [2024-06-21 20:41:06,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 489 transitions, 7501 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-21 20:41:06,457 INFO L231 Difference]: Finished difference. Result has 440 places, 479 transitions, 6559 flow [2024-06-21 20:41:06,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6412, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6559, PETRI_PLACES=440, PETRI_TRANSITIONS=479} [2024-06-21 20:41:06,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-21 20:41:06,457 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 479 transitions, 6559 flow [2024-06-21 20:41:06,457 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) [2024-06-21 20:41:06,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:06,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:06,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 20:41:06,457 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)] === [2024-06-21 20:41:06,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1551465277, now seen corresponding path program 20 times [2024-06-21 20:41:06,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:06,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105087596] [2024-06-21 20:41:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:06,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:07,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:07,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105087596] [2024-06-21 20:41:07,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105087596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:07,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:07,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:07,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150159128] [2024-06-21 20:41:07,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:07,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:07,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:07,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:07,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:07,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:07,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 479 transitions, 6559 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) [2024-06-21 20:41:07,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:07,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:07,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:08,348 INFO L124 PetriNetUnfolderBase]: 951/1753 cut-off events. [2024-06-21 20:41:08,348 INFO L125 PetriNetUnfolderBase]: For 354525/354525 co-relation queries the response was YES. [2024-06-21 20:41:08,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17117 conditions, 1753 events. 951/1753 cut-off events. For 354525/354525 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 10662 event pairs, 47 based on Foata normal form. 2/1750 useless extension candidates. Maximal degree in co-relation 16914. Up to 1406 conditions per place. [2024-06-21 20:41:08,370 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 414 selfloop transitions, 83 changer transitions 0/500 dead transitions. [2024-06-21 20:41:08,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 500 transitions, 8475 flow [2024-06-21 20:41:08,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:08,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 20:41:08,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 20:41:08,371 INFO L175 Difference]: Start difference. First operand has 440 places, 479 transitions, 6559 flow. Second operand 11 states and 144 transitions. [2024-06-21 20:41:08,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 500 transitions, 8475 flow [2024-06-21 20:41:09,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 500 transitions, 8343 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-21 20:41:09,744 INFO L231 Difference]: Finished difference. Result has 442 places, 486 transitions, 6894 flow [2024-06-21 20:41:09,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6894, PETRI_PLACES=442, PETRI_TRANSITIONS=486} [2024-06-21 20:41:09,744 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 411 predicate places. [2024-06-21 20:41:09,744 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 486 transitions, 6894 flow [2024-06-21 20:41:09,744 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) [2024-06-21 20:41:09,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:09,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:09,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 20:41:09,744 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)] === [2024-06-21 20:41:09,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:09,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1083958075, now seen corresponding path program 7 times [2024-06-21 20:41:09,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:09,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749029612] [2024-06-21 20:41:09,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:09,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:10,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749029612] [2024-06-21 20:41:10,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749029612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:10,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:10,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:10,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352069587] [2024-06-21 20:41:10,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:10,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:10,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:10,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:11,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:11,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 486 transitions, 6894 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) [2024-06-21 20:41:11,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:11,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:11,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:11,643 INFO L124 PetriNetUnfolderBase]: 955/1765 cut-off events. [2024-06-21 20:41:11,643 INFO L125 PetriNetUnfolderBase]: For 360106/360106 co-relation queries the response was YES. [2024-06-21 20:41:11,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17357 conditions, 1765 events. 955/1765 cut-off events. For 360106/360106 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10793 event pairs, 110 based on Foata normal form. 2/1765 useless extension candidates. Maximal degree in co-relation 17153. Up to 1598 conditions per place. [2024-06-21 20:41:11,669 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 473 selfloop transitions, 21 changer transitions 0/497 dead transitions. [2024-06-21 20:41:11,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 497 transitions, 7950 flow [2024-06-21 20:41:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:41:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:41:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-21 20:41:11,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-21 20:41:11,670 INFO L175 Difference]: Start difference. First operand has 442 places, 486 transitions, 6894 flow. Second operand 10 states and 118 transitions. [2024-06-21 20:41:11,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 497 transitions, 7950 flow [2024-06-21 20:41:13,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 497 transitions, 7722 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-06-21 20:41:13,149 INFO L231 Difference]: Finished difference. Result has 446 places, 487 transitions, 6760 flow [2024-06-21 20:41:13,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6666, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6760, PETRI_PLACES=446, PETRI_TRANSITIONS=487} [2024-06-21 20:41:13,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-21 20:41:13,150 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 487 transitions, 6760 flow [2024-06-21 20:41:13,150 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) [2024-06-21 20:41:13,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:13,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:13,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 20:41:13,150 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)] === [2024-06-21 20:41:13,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:13,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1557952027, now seen corresponding path program 21 times [2024-06-21 20:41:13,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:13,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345515813] [2024-06-21 20:41:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:13,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:14,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:14,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345515813] [2024-06-21 20:41:14,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345515813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:14,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:14,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:14,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567697168] [2024-06-21 20:41:14,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:14,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:14,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:14,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:14,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:14,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:14,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 487 transitions, 6760 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) [2024-06-21 20:41:14,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:14,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:14,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:14,943 INFO L124 PetriNetUnfolderBase]: 961/1773 cut-off events. [2024-06-21 20:41:14,943 INFO L125 PetriNetUnfolderBase]: For 363235/363235 co-relation queries the response was YES. [2024-06-21 20:41:14,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17356 conditions, 1773 events. 961/1773 cut-off events. For 363235/363235 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10809 event pairs, 49 based on Foata normal form. 2/1770 useless extension candidates. Maximal degree in co-relation 17150. Up to 1475 conditions per place. [2024-06-21 20:41:14,969 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 426 selfloop transitions, 73 changer transitions 0/502 dead transitions. [2024-06-21 20:41:14,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 502 transitions, 8222 flow [2024-06-21 20:41:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 20:41:14,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 20:41:14,970 INFO L175 Difference]: Start difference. First operand has 446 places, 487 transitions, 6760 flow. Second operand 11 states and 138 transitions. [2024-06-21 20:41:14,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 502 transitions, 8222 flow [2024-06-21 20:41:16,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 502 transitions, 8084 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-21 20:41:16,507 INFO L231 Difference]: Finished difference. Result has 449 places, 491 transitions, 6936 flow [2024-06-21 20:41:16,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6622, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6936, PETRI_PLACES=449, PETRI_TRANSITIONS=491} [2024-06-21 20:41:16,508 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 418 predicate places. [2024-06-21 20:41:16,508 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 491 transitions, 6936 flow [2024-06-21 20:41:16,508 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) [2024-06-21 20:41:16,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:16,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:16,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 20:41:16,508 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)] === [2024-06-21 20:41:16,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:16,509 INFO L85 PathProgramCache]: Analyzing trace with hash -556118137, now seen corresponding path program 22 times [2024-06-21 20:41:16,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:16,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185800283] [2024-06-21 20:41:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:16,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:17,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:17,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185800283] [2024-06-21 20:41:17,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185800283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:17,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:17,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:17,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638985616] [2024-06-21 20:41:17,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:17,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:17,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:17,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:17,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:17,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:17,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 491 transitions, 6936 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) [2024-06-21 20:41:17,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:17,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:17,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:18,285 INFO L124 PetriNetUnfolderBase]: 987/1823 cut-off events. [2024-06-21 20:41:18,285 INFO L125 PetriNetUnfolderBase]: For 410965/410965 co-relation queries the response was YES. [2024-06-21 20:41:18,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18739 conditions, 1823 events. 987/1823 cut-off events. For 410965/410965 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 11213 event pairs, 55 based on Foata normal form. 2/1820 useless extension candidates. Maximal degree in co-relation 18532. Up to 737 conditions per place. [2024-06-21 20:41:18,312 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 291 selfloop transitions, 226 changer transitions 0/520 dead transitions. [2024-06-21 20:41:18,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 520 transitions, 9709 flow [2024-06-21 20:41:18,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:18,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-21 20:41:18,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-21 20:41:18,313 INFO L175 Difference]: Start difference. First operand has 449 places, 491 transitions, 6936 flow. Second operand 11 states and 156 transitions. [2024-06-21 20:41:18,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 520 transitions, 9709 flow [2024-06-21 20:41:20,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 520 transitions, 9554 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-21 20:41:20,062 INFO L231 Difference]: Finished difference. Result has 453 places, 502 transitions, 7724 flow [2024-06-21 20:41:20,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6781, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7724, PETRI_PLACES=453, PETRI_TRANSITIONS=502} [2024-06-21 20:41:20,062 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 422 predicate places. [2024-06-21 20:41:20,062 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 502 transitions, 7724 flow [2024-06-21 20:41:20,062 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) [2024-06-21 20:41:20,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:20,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:20,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 20:41:20,063 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)] === [2024-06-21 20:41:20,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:20,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1894645701, now seen corresponding path program 8 times [2024-06-21 20:41:20,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:20,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136514375] [2024-06-21 20:41:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:20,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:21,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:21,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136514375] [2024-06-21 20:41:21,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136514375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:21,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:21,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:21,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466170072] [2024-06-21 20:41:21,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:21,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:21,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:21,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:21,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:21,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:21,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 502 transitions, 7724 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) [2024-06-21 20:41:21,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:21,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:21,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:22,373 INFO L124 PetriNetUnfolderBase]: 998/1844 cut-off events. [2024-06-21 20:41:22,373 INFO L125 PetriNetUnfolderBase]: For 418721/418721 co-relation queries the response was YES. [2024-06-21 20:41:22,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19361 conditions, 1844 events. 998/1844 cut-off events. For 418721/418721 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 11367 event pairs, 112 based on Foata normal form. 2/1844 useless extension candidates. Maximal degree in co-relation 19152. Up to 1656 conditions per place. [2024-06-21 20:41:22,402 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 491 selfloop transitions, 25 changer transitions 0/519 dead transitions. [2024-06-21 20:41:22,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 519 transitions, 8853 flow [2024-06-21 20:41:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:41:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:41:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-21 20:41:22,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-21 20:41:22,403 INFO L175 Difference]: Start difference. First operand has 453 places, 502 transitions, 7724 flow. Second operand 12 states and 140 transitions. [2024-06-21 20:41:22,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 519 transitions, 8853 flow [2024-06-21 20:41:24,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 519 transitions, 8577 flow, removed 102 selfloop flow, removed 4 redundant places. [2024-06-21 20:41:24,328 INFO L231 Difference]: Finished difference. Result has 462 places, 506 transitions, 7579 flow [2024-06-21 20:41:24,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7448, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7579, PETRI_PLACES=462, PETRI_TRANSITIONS=506} [2024-06-21 20:41:24,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 431 predicate places. [2024-06-21 20:41:24,329 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 506 transitions, 7579 flow [2024-06-21 20:41:24,329 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) [2024-06-21 20:41:24,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:24,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:24,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 20:41:24,329 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)] === [2024-06-21 20:41:24,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:24,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1551456349, now seen corresponding path program 9 times [2024-06-21 20:41:24,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:24,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891127836] [2024-06-21 20:41:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:24,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:25,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:25,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891127836] [2024-06-21 20:41:25,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891127836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:25,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:25,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:25,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492359390] [2024-06-21 20:41:25,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:25,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:25,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:25,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:25,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:25,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 506 transitions, 7579 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) [2024-06-21 20:41:25,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:25,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:25,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:26,535 INFO L124 PetriNetUnfolderBase]: 1002/1853 cut-off events. [2024-06-21 20:41:26,535 INFO L125 PetriNetUnfolderBase]: For 422399/422399 co-relation queries the response was YES. [2024-06-21 20:41:26,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19229 conditions, 1853 events. 1002/1853 cut-off events. For 422399/422399 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 11451 event pairs, 47 based on Foata normal form. 2/1850 useless extension candidates. Maximal degree in co-relation 19017. Up to 1644 conditions per place. [2024-06-21 20:41:26,564 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 478 selfloop transitions, 37 changer transitions 0/518 dead transitions. [2024-06-21 20:41:26,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 518 transitions, 8683 flow [2024-06-21 20:41:26,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 20:41:26,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-21 20:41:26,565 INFO L175 Difference]: Start difference. First operand has 462 places, 506 transitions, 7579 flow. Second operand 11 states and 129 transitions. [2024-06-21 20:41:26,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 518 transitions, 8683 flow [2024-06-21 20:41:28,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 518 transitions, 8588 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 20:41:28,645 INFO L231 Difference]: Finished difference. Result has 464 places, 507 transitions, 7614 flow [2024-06-21 20:41:28,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7484, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7614, PETRI_PLACES=464, PETRI_TRANSITIONS=507} [2024-06-21 20:41:28,645 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 433 predicate places. [2024-06-21 20:41:28,645 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 507 transitions, 7614 flow [2024-06-21 20:41:28,645 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) [2024-06-21 20:41:28,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:28,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:28,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 20:41:28,646 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)] === [2024-06-21 20:41:28,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:28,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1329820237, now seen corresponding path program 23 times [2024-06-21 20:41:28,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:28,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163941633] [2024-06-21 20:41:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:29,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:29,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163941633] [2024-06-21 20:41:29,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163941633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:29,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:29,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:29,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770855108] [2024-06-21 20:41:29,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:29,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:29,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:29,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:29,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:29,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:29,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 507 transitions, 7614 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) [2024-06-21 20:41:29,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:29,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:29,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:30,667 INFO L124 PetriNetUnfolderBase]: 1010/1869 cut-off events. [2024-06-21 20:41:30,667 INFO L125 PetriNetUnfolderBase]: For 429540/429540 co-relation queries the response was YES. [2024-06-21 20:41:30,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19617 conditions, 1869 events. 1010/1869 cut-off events. For 429540/429540 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 11599 event pairs, 50 based on Foata normal form. 1/1865 useless extension candidates. Maximal degree in co-relation 19406. Up to 1504 conditions per place. [2024-06-21 20:41:30,696 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 436 selfloop transitions, 90 changer transitions 0/529 dead transitions. [2024-06-21 20:41:30,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 529 transitions, 9981 flow [2024-06-21 20:41:30,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 20:41:30,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 20:41:30,697 INFO L175 Difference]: Start difference. First operand has 464 places, 507 transitions, 7614 flow. Second operand 11 states and 147 transitions. [2024-06-21 20:41:30,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 529 transitions, 9981 flow [2024-06-21 20:41:32,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 529 transitions, 9829 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-06-21 20:41:32,849 INFO L231 Difference]: Finished difference. Result has 464 places, 516 transitions, 8088 flow [2024-06-21 20:41:32,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7462, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8088, PETRI_PLACES=464, PETRI_TRANSITIONS=516} [2024-06-21 20:41:32,849 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 433 predicate places. [2024-06-21 20:41:32,849 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 516 transitions, 8088 flow [2024-06-21 20:41:32,849 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) [2024-06-21 20:41:32,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:32,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:32,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 20:41:32,849 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)] === [2024-06-21 20:41:32,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:32,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1329819989, now seen corresponding path program 6 times [2024-06-21 20:41:32,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:32,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793576049] [2024-06-21 20:41:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:32,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:34,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:34,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793576049] [2024-06-21 20:41:34,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793576049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:34,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:34,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:34,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312913743] [2024-06-21 20:41:34,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:34,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:34,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:34,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:34,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:34,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:34,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 516 transitions, 8088 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) [2024-06-21 20:41:34,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:34,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:34,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:34,911 INFO L124 PetriNetUnfolderBase]: 1013/1872 cut-off events. [2024-06-21 20:41:34,911 INFO L125 PetriNetUnfolderBase]: For 434943/434943 co-relation queries the response was YES. [2024-06-21 20:41:34,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19794 conditions, 1872 events. 1013/1872 cut-off events. For 434943/434943 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11595 event pairs, 56 based on Foata normal form. 1/1868 useless extension candidates. Maximal degree in co-relation 19582. Up to 1522 conditions per place. [2024-06-21 20:41:34,940 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 445 selfloop transitions, 81 changer transitions 0/529 dead transitions. [2024-06-21 20:41:34,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 529 transitions, 9234 flow [2024-06-21 20:41:34,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:34,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 20:41:34,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:41:34,941 INFO L175 Difference]: Start difference. First operand has 464 places, 516 transitions, 8088 flow. Second operand 11 states and 143 transitions. [2024-06-21 20:41:34,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 529 transitions, 9234 flow [2024-06-21 20:41:36,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 529 transitions, 9004 flow, removed 80 selfloop flow, removed 5 redundant places. [2024-06-21 20:41:36,988 INFO L231 Difference]: Finished difference. Result has 470 places, 518 transitions, 8097 flow [2024-06-21 20:41:36,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7858, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8097, PETRI_PLACES=470, PETRI_TRANSITIONS=518} [2024-06-21 20:41:36,988 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 439 predicate places. [2024-06-21 20:41:36,988 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 518 transitions, 8097 flow [2024-06-21 20:41:36,989 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) [2024-06-21 20:41:36,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:36,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:36,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 20:41:36,989 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)] === [2024-06-21 20:41:36,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:36,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1941344783, now seen corresponding path program 10 times [2024-06-21 20:41:36,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:36,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245580124] [2024-06-21 20:41:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:36,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:38,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:38,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245580124] [2024-06-21 20:41:38,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245580124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:38,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:38,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:38,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322310902] [2024-06-21 20:41:38,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:38,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:38,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:38,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:38,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:38,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:38,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 518 transitions, 8097 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) [2024-06-21 20:41:38,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:38,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:38,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:39,212 INFO L124 PetriNetUnfolderBase]: 1017/1882 cut-off events. [2024-06-21 20:41:39,212 INFO L125 PetriNetUnfolderBase]: For 452389/452389 co-relation queries the response was YES. [2024-06-21 20:41:39,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19911 conditions, 1882 events. 1017/1882 cut-off events. For 452389/452389 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11695 event pairs, 113 based on Foata normal form. 2/1882 useless extension candidates. Maximal degree in co-relation 19697. Up to 1699 conditions per place. [2024-06-21 20:41:39,242 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 508 selfloop transitions, 20 changer transitions 0/531 dead transitions. [2024-06-21 20:41:39,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 531 transitions, 9231 flow [2024-06-21 20:41:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:39,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 20:41:39,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 20:41:39,243 INFO L175 Difference]: Start difference. First operand has 470 places, 518 transitions, 8097 flow. Second operand 11 states and 128 transitions. [2024-06-21 20:41:39,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 531 transitions, 9231 flow [2024-06-21 20:41:41,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 531 transitions, 9008 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-21 20:41:41,337 INFO L231 Difference]: Finished difference. Result has 472 places, 519 transitions, 7972 flow [2024-06-21 20:41:41,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7874, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7972, PETRI_PLACES=472, PETRI_TRANSITIONS=519} [2024-06-21 20:41:41,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 441 predicate places. [2024-06-21 20:41:41,338 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 519 transitions, 7972 flow [2024-06-21 20:41:41,338 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) [2024-06-21 20:41:41,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:41,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:41,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 20:41:41,338 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)] === [2024-06-21 20:41:41,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:41,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1551702427, now seen corresponding path program 24 times [2024-06-21 20:41:41,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:41,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389653263] [2024-06-21 20:41:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:41,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:42,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:42,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389653263] [2024-06-21 20:41:42,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389653263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:42,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:42,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:42,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691729951] [2024-06-21 20:41:42,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:42,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:42,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:42,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:42,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:42,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:42,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 519 transitions, 7972 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) [2024-06-21 20:41:42,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:42,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:42,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:43,272 INFO L124 PetriNetUnfolderBase]: 1020/1889 cut-off events. [2024-06-21 20:41:43,273 INFO L125 PetriNetUnfolderBase]: For 447150/447150 co-relation queries the response was YES. [2024-06-21 20:41:43,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19872 conditions, 1889 events. 1020/1889 cut-off events. For 447150/447150 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 11749 event pairs, 52 based on Foata normal form. 1/1885 useless extension candidates. Maximal degree in co-relation 19657. Up to 1564 conditions per place. [2024-06-21 20:41:43,302 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 450 selfloop transitions, 79 changer transitions 0/532 dead transitions. [2024-06-21 20:41:43,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 532 transitions, 9442 flow [2024-06-21 20:41:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 20:41:43,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 20:41:43,303 INFO L175 Difference]: Start difference. First operand has 472 places, 519 transitions, 7972 flow. Second operand 11 states and 140 transitions. [2024-06-21 20:41:43,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 532 transitions, 9442 flow [2024-06-21 20:41:45,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 532 transitions, 9349 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 20:41:45,320 INFO L231 Difference]: Finished difference. Result has 474 places, 521 transitions, 8132 flow [2024-06-21 20:41:45,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7879, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8132, PETRI_PLACES=474, PETRI_TRANSITIONS=521} [2024-06-21 20:41:45,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 443 predicate places. [2024-06-21 20:41:45,321 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 521 transitions, 8132 flow [2024-06-21 20:41:45,321 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) [2024-06-21 20:41:45,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:45,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:45,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 20:41:45,321 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)] === [2024-06-21 20:41:45,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:45,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1551695917, now seen corresponding path program 25 times [2024-06-21 20:41:45,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:45,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116365537] [2024-06-21 20:41:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:45,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:46,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:46,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116365537] [2024-06-21 20:41:46,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116365537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:46,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:46,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:46,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322266467] [2024-06-21 20:41:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:46,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:46,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:46,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:46,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 521 transitions, 8132 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) [2024-06-21 20:41:46,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:46,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:46,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:47,156 INFO L124 PetriNetUnfolderBase]: 1018/1886 cut-off events. [2024-06-21 20:41:47,157 INFO L125 PetriNetUnfolderBase]: For 440764/440764 co-relation queries the response was YES. [2024-06-21 20:41:47,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19727 conditions, 1886 events. 1018/1886 cut-off events. For 440764/440764 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 11722 event pairs, 52 based on Foata normal form. 1/1882 useless extension candidates. Maximal degree in co-relation 19512. Up to 1562 conditions per place. [2024-06-21 20:41:47,187 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 450 selfloop transitions, 79 changer transitions 0/532 dead transitions. [2024-06-21 20:41:47,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 532 transitions, 9229 flow [2024-06-21 20:41:47,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:47,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:47,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 20:41:47,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 20:41:47,188 INFO L175 Difference]: Start difference. First operand has 474 places, 521 transitions, 8132 flow. Second operand 11 states and 140 transitions. [2024-06-21 20:41:47,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 532 transitions, 9229 flow [2024-06-21 20:41:49,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 532 transitions, 8880 flow, removed 79 selfloop flow, removed 10 redundant places. [2024-06-21 20:41:49,390 INFO L231 Difference]: Finished difference. Result has 475 places, 522 transitions, 7963 flow [2024-06-21 20:41:49,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7790, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7963, PETRI_PLACES=475, PETRI_TRANSITIONS=522} [2024-06-21 20:41:49,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 444 predicate places. [2024-06-21 20:41:49,390 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 522 transitions, 7963 flow [2024-06-21 20:41:49,390 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) [2024-06-21 20:41:49,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:49,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:49,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 20:41:49,391 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)] === [2024-06-21 20:41:49,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1329811619, now seen corresponding path program 7 times [2024-06-21 20:41:49,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:49,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748776413] [2024-06-21 20:41:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:49,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:50,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:50,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748776413] [2024-06-21 20:41:50,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748776413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:50,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:50,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:50,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231286488] [2024-06-21 20:41:50,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:50,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:50,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:50,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:50,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:50,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:50,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 522 transitions, 7963 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) [2024-06-21 20:41:50,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:50,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:50,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:51,503 INFO L124 PetriNetUnfolderBase]: 1026/1901 cut-off events. [2024-06-21 20:41:51,503 INFO L125 PetriNetUnfolderBase]: For 458635/458635 co-relation queries the response was YES. [2024-06-21 20:41:51,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19946 conditions, 1901 events. 1026/1901 cut-off events. For 458635/458635 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 11874 event pairs, 55 based on Foata normal form. 1/1897 useless extension candidates. Maximal degree in co-relation 19731. Up to 1535 conditions per place. [2024-06-21 20:41:51,533 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 448 selfloop transitions, 87 changer transitions 0/538 dead transitions. [2024-06-21 20:41:51,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 538 transitions, 9507 flow [2024-06-21 20:41:51,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:51,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 20:41:51,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 20:41:51,534 INFO L175 Difference]: Start difference. First operand has 475 places, 522 transitions, 7963 flow. Second operand 11 states and 145 transitions. [2024-06-21 20:41:51,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 538 transitions, 9507 flow [2024-06-21 20:41:53,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 538 transitions, 9364 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 20:41:53,840 INFO L231 Difference]: Finished difference. Result has 479 places, 526 transitions, 8147 flow [2024-06-21 20:41:53,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7820, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8147, PETRI_PLACES=479, PETRI_TRANSITIONS=526} [2024-06-21 20:41:53,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 448 predicate places. [2024-06-21 20:41:53,841 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 526 transitions, 8147 flow [2024-06-21 20:41:53,841 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) [2024-06-21 20:41:53,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:53,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:53,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 20:41:53,841 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)] === [2024-06-21 20:41:53,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:53,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1329811309, now seen corresponding path program 11 times [2024-06-21 20:41:53,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:53,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313827743] [2024-06-21 20:41:53,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:53,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:55,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:55,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313827743] [2024-06-21 20:41:55,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313827743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:55,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:55,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:55,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702766614] [2024-06-21 20:41:55,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:55,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:55,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:55,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:55,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:55,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 526 transitions, 8147 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) [2024-06-21 20:41:55,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:55,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:55,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:41:56,017 INFO L124 PetriNetUnfolderBase]: 1030/1909 cut-off events. [2024-06-21 20:41:56,017 INFO L125 PetriNetUnfolderBase]: For 475657/475657 co-relation queries the response was YES. [2024-06-21 20:41:56,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20140 conditions, 1909 events. 1030/1909 cut-off events. For 475657/475657 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 11927 event pairs, 50 based on Foata normal form. 2/1907 useless extension candidates. Maximal degree in co-relation 19924. Up to 1678 conditions per place. [2024-06-21 20:41:56,050 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 491 selfloop transitions, 44 changer transitions 0/538 dead transitions. [2024-06-21 20:41:56,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 538 transitions, 9295 flow [2024-06-21 20:41:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:41:56,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:41:56,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 20:41:56,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 20:41:56,051 INFO L175 Difference]: Start difference. First operand has 479 places, 526 transitions, 8147 flow. Second operand 11 states and 133 transitions. [2024-06-21 20:41:56,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 538 transitions, 9295 flow [2024-06-21 20:41:58,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 538 transitions, 9119 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-21 20:41:58,315 INFO L231 Difference]: Finished difference. Result has 483 places, 527 transitions, 8119 flow [2024-06-21 20:41:58,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7971, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8119, PETRI_PLACES=483, PETRI_TRANSITIONS=527} [2024-06-21 20:41:58,316 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 452 predicate places. [2024-06-21 20:41:58,316 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 527 transitions, 8119 flow [2024-06-21 20:41:58,316 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) [2024-06-21 20:41:58,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:41:58,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:41:58,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 20:41:58,316 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)] === [2024-06-21 20:41:58,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:41:58,316 INFO L85 PathProgramCache]: Analyzing trace with hash -729396505, now seen corresponding path program 12 times [2024-06-21 20:41:58,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:41:58,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941082833] [2024-06-21 20:41:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:41:58,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:41:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:41:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:41:59,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:41:59,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941082833] [2024-06-21 20:41:59,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941082833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:41:59,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:41:59,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:41:59,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501903214] [2024-06-21 20:41:59,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:41:59,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:41:59,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:41:59,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:41:59,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:41:59,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:41:59,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 527 transitions, 8119 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) [2024-06-21 20:41:59,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:41:59,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:41:59,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:00,347 INFO L124 PetriNetUnfolderBase]: 1034/1915 cut-off events. [2024-06-21 20:42:00,347 INFO L125 PetriNetUnfolderBase]: For 482010/482010 co-relation queries the response was YES. [2024-06-21 20:42:00,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20277 conditions, 1915 events. 1034/1915 cut-off events. For 482010/482010 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 11963 event pairs, 115 based on Foata normal form. 2/1915 useless extension candidates. Maximal degree in co-relation 20059. Up to 1679 conditions per place. [2024-06-21 20:42:00,378 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 512 selfloop transitions, 26 changer transitions 0/541 dead transitions. [2024-06-21 20:42:00,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 541 transitions, 9279 flow [2024-06-21 20:42:00,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:42:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:42:00,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 20:42:00,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-21 20:42:00,379 INFO L175 Difference]: Start difference. First operand has 483 places, 527 transitions, 8119 flow. Second operand 11 states and 129 transitions. [2024-06-21 20:42:00,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 541 transitions, 9279 flow [2024-06-21 20:42:02,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 541 transitions, 9141 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 20:42:02,850 INFO L231 Difference]: Finished difference. Result has 485 places, 528 transitions, 8095 flow [2024-06-21 20:42:02,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7981, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8095, PETRI_PLACES=485, PETRI_TRANSITIONS=528} [2024-06-21 20:42:02,851 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 454 predicate places. [2024-06-21 20:42:02,851 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 528 transitions, 8095 flow [2024-06-21 20:42:02,851 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) [2024-06-21 20:42:02,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:42:02,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:42:02,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 20:42:02,851 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)] === [2024-06-21 20:42:02,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:42:02,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1330057387, now seen corresponding path program 26 times [2024-06-21 20:42:02,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:42:02,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572665827] [2024-06-21 20:42:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:42:02,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:42:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:42:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:42:04,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:42:04,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572665827] [2024-06-21 20:42:04,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572665827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:42:04,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:42:04,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:42:04,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849508753] [2024-06-21 20:42:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:42:04,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:42:04,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:42:04,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:42:04,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:42:04,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:42:04,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 528 transitions, 8095 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) [2024-06-21 20:42:04,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:42:04,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:42:04,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:04,988 INFO L124 PetriNetUnfolderBase]: 1037/1924 cut-off events. [2024-06-21 20:42:04,988 INFO L125 PetriNetUnfolderBase]: For 477634/477634 co-relation queries the response was YES. [2024-06-21 20:42:05,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20288 conditions, 1924 events. 1037/1924 cut-off events. For 477634/477634 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 12090 event pairs, 54 based on Foata normal form. 1/1920 useless extension candidates. Maximal degree in co-relation 20069. Up to 1552 conditions per place. [2024-06-21 20:42:05,021 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 440 selfloop transitions, 98 changer transitions 0/541 dead transitions. [2024-06-21 20:42:05,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 541 transitions, 9583 flow [2024-06-21 20:42:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:42:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:42:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 20:42:05,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:42:05,026 INFO L175 Difference]: Start difference. First operand has 485 places, 528 transitions, 8095 flow. Second operand 11 states and 143 transitions. [2024-06-21 20:42:05,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 541 transitions, 9583 flow [2024-06-21 20:42:07,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 541 transitions, 9479 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-21 20:42:07,485 INFO L231 Difference]: Finished difference. Result has 487 places, 530 transitions, 8272 flow [2024-06-21 20:42:07,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7991, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8272, PETRI_PLACES=487, PETRI_TRANSITIONS=530} [2024-06-21 20:42:07,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 456 predicate places. [2024-06-21 20:42:07,485 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 530 transitions, 8272 flow [2024-06-21 20:42:07,486 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) [2024-06-21 20:42:07,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:42:07,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:42:07,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 20:42:07,486 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)] === [2024-06-21 20:42:07,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:42:07,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2076555983, now seen corresponding path program 13 times [2024-06-21 20:42:07,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:42:07,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617968556] [2024-06-21 20:42:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:42:07,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:42:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:42:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:42:08,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:42:08,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617968556] [2024-06-21 20:42:08,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617968556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:42:08,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:42:08,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:42:08,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038090106] [2024-06-21 20:42:08,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:42:08,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:42:08,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:42:08,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:42:08,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:42:09,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:42:09,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 530 transitions, 8272 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) [2024-06-21 20:42:09,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:42:09,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:42:09,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:09,764 INFO L124 PetriNetUnfolderBase]: 1041/1930 cut-off events. [2024-06-21 20:42:09,764 INFO L125 PetriNetUnfolderBase]: For 494321/494321 co-relation queries the response was YES. [2024-06-21 20:42:09,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20492 conditions, 1930 events. 1041/1930 cut-off events. For 494321/494321 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 12127 event pairs, 52 based on Foata normal form. 2/1928 useless extension candidates. Maximal degree in co-relation 20272. Up to 1603 conditions per place. [2024-06-21 20:42:09,796 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 454 selfloop transitions, 85 changer transitions 0/542 dead transitions. [2024-06-21 20:42:09,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 542 transitions, 9432 flow [2024-06-21 20:42:09,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:42:09,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:42:09,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 20:42:09,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 20:42:09,797 INFO L175 Difference]: Start difference. First operand has 487 places, 530 transitions, 8272 flow. Second operand 11 states and 136 transitions. [2024-06-21 20:42:09,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 542 transitions, 9432 flow [2024-06-21 20:42:12,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 542 transitions, 9165 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-21 20:42:12,176 INFO L231 Difference]: Finished difference. Result has 490 places, 531 transitions, 8239 flow [2024-06-21 20:42:12,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8005, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8239, PETRI_PLACES=490, PETRI_TRANSITIONS=531} [2024-06-21 20:42:12,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2024-06-21 20:42:12,177 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 531 transitions, 8239 flow [2024-06-21 20:42:12,177 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) [2024-06-21 20:42:12,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:42:12,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:42:12,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 20:42:12,177 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)] === [2024-06-21 20:42:12,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:42:12,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2076566213, now seen corresponding path program 14 times [2024-06-21 20:42:12,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:42:12,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159813627] [2024-06-21 20:42:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:42:12,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:42:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:42:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:42:13,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:42:13,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159813627] [2024-06-21 20:42:13,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159813627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:42:13,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:42:13,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:42:13,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456724710] [2024-06-21 20:42:13,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:42:13,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:42:13,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:42:13,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:42:13,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:42:13,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:42:13,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 531 transitions, 8239 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) [2024-06-21 20:42:13,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:42:13,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:42:13,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:14,423 INFO L124 PetriNetUnfolderBase]: 1052/1951 cut-off events. [2024-06-21 20:42:14,423 INFO L125 PetriNetUnfolderBase]: For 528989/528989 co-relation queries the response was YES. [2024-06-21 20:42:14,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21074 conditions, 1951 events. 1052/1951 cut-off events. For 528989/528989 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 12261 event pairs, 50 based on Foata normal form. 2/1949 useless extension candidates. Maximal degree in co-relation 20853. Up to 1599 conditions per place. [2024-06-21 20:42:14,457 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 456 selfloop transitions, 87 changer transitions 0/546 dead transitions. [2024-06-21 20:42:14,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 546 transitions, 9785 flow [2024-06-21 20:42:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:42:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:42:14,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 20:42:14,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 20:42:14,458 INFO L175 Difference]: Start difference. First operand has 490 places, 531 transitions, 8239 flow. Second operand 11 states and 138 transitions. [2024-06-21 20:42:14,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 546 transitions, 9785 flow [2024-06-21 20:42:16,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 546 transitions, 9561 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 20:42:16,867 INFO L231 Difference]: Finished difference. Result has 492 places, 533 transitions, 8315 flow [2024-06-21 20:42:16,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8015, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8315, PETRI_PLACES=492, PETRI_TRANSITIONS=533} [2024-06-21 20:42:16,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 461 predicate places. [2024-06-21 20:42:16,868 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 533 transitions, 8315 flow [2024-06-21 20:42:16,868 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) [2024-06-21 20:42:16,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:42:16,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:42:16,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 20:42:16,869 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)] === [2024-06-21 20:42:16,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:42:16,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2067984545, now seen corresponding path program 27 times [2024-06-21 20:42:16,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:42:16,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047039979] [2024-06-21 20:42:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:42:16,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:42:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:42:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:42:17,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:42:17,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047039979] [2024-06-21 20:42:17,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047039979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:42:17,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:42:17,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:42:17,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623844712] [2024-06-21 20:42:17,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:42:17,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:42:17,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:42:17,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:42:17,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:42:17,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:42:17,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 533 transitions, 8315 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) [2024-06-21 20:42:17,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:42:17,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:42:17,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:18,679 INFO L124 PetriNetUnfolderBase]: 1069/1986 cut-off events. [2024-06-21 20:42:18,679 INFO L125 PetriNetUnfolderBase]: For 560610/560610 co-relation queries the response was YES. [2024-06-21 20:42:18,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21839 conditions, 1986 events. 1069/1986 cut-off events. For 560610/560610 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 12548 event pairs, 58 based on Foata normal form. 2/1983 useless extension candidates. Maximal degree in co-relation 21617. Up to 814 conditions per place. [2024-06-21 20:42:18,713 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 247 changer transitions 0/553 dead transitions. [2024-06-21 20:42:18,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 553 transitions, 10659 flow [2024-06-21 20:42:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:42:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:42:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-21 20:42:18,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-21 20:42:18,713 INFO L175 Difference]: Start difference. First operand has 492 places, 533 transitions, 8315 flow. Second operand 11 states and 151 transitions. [2024-06-21 20:42:18,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 553 transitions, 10659 flow [2024-06-21 20:42:21,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 553 transitions, 10471 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-21 20:42:21,310 INFO L231 Difference]: Finished difference. Result has 495 places, 538 transitions, 8820 flow [2024-06-21 20:42:21,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8127, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8820, PETRI_PLACES=495, PETRI_TRANSITIONS=538} [2024-06-21 20:42:21,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 464 predicate places. [2024-06-21 20:42:21,310 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 538 transitions, 8820 flow [2024-06-21 20:42:21,310 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) [2024-06-21 20:42:21,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:42:21,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:42:21,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 20:42:21,311 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)] === [2024-06-21 20:42:21,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:42:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2076267683, now seen corresponding path program 15 times [2024-06-21 20:42:21,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:42:21,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912585962] [2024-06-21 20:42:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:42:21,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:42:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:42:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:42:22,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:42:22,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912585962] [2024-06-21 20:42:22,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912585962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:42:22,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:42:22,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:42:22,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567971238] [2024-06-21 20:42:22,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:42:22,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:42:22,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:42:22,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:42:22,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:42:22,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:42:22,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 538 transitions, 8820 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) [2024-06-21 20:42:22,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:42:22,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:42:22,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:23,512 INFO L124 PetriNetUnfolderBase]: 1073/1996 cut-off events. [2024-06-21 20:42:23,512 INFO L125 PetriNetUnfolderBase]: For 570969/570969 co-relation queries the response was YES. [2024-06-21 20:42:23,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22349 conditions, 1996 events. 1073/1996 cut-off events. For 570969/570969 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 12670 event pairs, 51 based on Foata normal form. 2/1994 useless extension candidates. Maximal degree in co-relation 22126. Up to 1669 conditions per place. [2024-06-21 20:42:23,545 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 467 selfloop transitions, 80 changer transitions 0/550 dead transitions. [2024-06-21 20:42:23,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 550 transitions, 9986 flow [2024-06-21 20:42:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:42:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:42:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 20:42:23,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 20:42:23,546 INFO L175 Difference]: Start difference. First operand has 495 places, 538 transitions, 8820 flow. Second operand 11 states and 135 transitions. [2024-06-21 20:42:23,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 550 transitions, 9986 flow [2024-06-21 20:42:26,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 550 transitions, 9419 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-21 20:42:26,404 INFO L231 Difference]: Finished difference. Result has 499 places, 539 transitions, 8467 flow [2024-06-21 20:42:26,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8253, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8467, PETRI_PLACES=499, PETRI_TRANSITIONS=539} [2024-06-21 20:42:26,405 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 468 predicate places. [2024-06-21 20:42:26,405 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 539 transitions, 8467 flow [2024-06-21 20:42:26,405 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) [2024-06-21 20:42:26,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:42:26,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:42:26,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 20:42:26,405 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)] === [2024-06-21 20:42:26,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:42:26,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2067984793, now seen corresponding path program 8 times [2024-06-21 20:42:26,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:42:26,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083393716] [2024-06-21 20:42:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:42:26,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:42:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:42:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:42:27,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:42:27,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083393716] [2024-06-21 20:42:27,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083393716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:42:27,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:42:27,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:42:27,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429470946] [2024-06-21 20:42:27,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:42:27,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:42:27,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:42:27,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:42:27,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:42:27,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:42:27,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 539 transitions, 8467 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) [2024-06-21 20:42:27,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:42:27,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:42:27,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:28,376 INFO L124 PetriNetUnfolderBase]: 1070/1988 cut-off events. [2024-06-21 20:42:28,376 INFO L125 PetriNetUnfolderBase]: For 549560/549560 co-relation queries the response was YES. [2024-06-21 20:42:28,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21656 conditions, 1988 events. 1070/1988 cut-off events. For 549560/549560 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 12577 event pairs, 61 based on Foata normal form. 1/1984 useless extension candidates. Maximal degree in co-relation 21432. Up to 1164 conditions per place. [2024-06-21 20:42:28,410 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 358 selfloop transitions, 190 changer transitions 0/551 dead transitions. [2024-06-21 20:42:28,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 551 transitions, 9951 flow [2024-06-21 20:42:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:42:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:42:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 20:42:28,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-21 20:42:28,411 INFO L175 Difference]: Start difference. First operand has 499 places, 539 transitions, 8467 flow. Second operand 10 states and 137 transitions. [2024-06-21 20:42:28,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 551 transitions, 9951 flow [2024-06-21 20:42:31,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 551 transitions, 9717 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-21 20:42:31,059 INFO L231 Difference]: Finished difference. Result has 500 places, 539 transitions, 8619 flow [2024-06-21 20:42:31,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8233, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8619, PETRI_PLACES=500, PETRI_TRANSITIONS=539} [2024-06-21 20:42:31,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 469 predicate places. [2024-06-21 20:42:31,059 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 539 transitions, 8619 flow [2024-06-21 20:42:31,059 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) [2024-06-21 20:42:31,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:42:31,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:42:31,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 20:42:31,059 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)] === [2024-06-21 20:42:31,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:42:31,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2068224113, now seen corresponding path program 16 times [2024-06-21 20:42:31,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:42:31,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382252055] [2024-06-21 20:42:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:42:31,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:42:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:42:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:42:32,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:42:32,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382252055] [2024-06-21 20:42:32,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382252055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:42:32,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:42:32,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:42:32,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17198140] [2024-06-21 20:42:32,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:42:32,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:42:32,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:42:32,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:42:32,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:42:32,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:42:32,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 539 transitions, 8619 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) [2024-06-21 20:42:32,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:42:32,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:42:32,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:33,218 INFO L124 PetriNetUnfolderBase]: 1067/1989 cut-off events. [2024-06-21 20:42:33,218 INFO L125 PetriNetUnfolderBase]: For 541486/541486 co-relation queries the response was YES. [2024-06-21 20:42:33,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21472 conditions, 1989 events. 1067/1989 cut-off events. For 541486/541486 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 12632 event pairs, 51 based on Foata normal form. 2/1987 useless extension candidates. Maximal degree in co-relation 21247. Up to 1659 conditions per place. [2024-06-21 20:42:33,252 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 466 selfloop transitions, 81 changer transitions 0/550 dead transitions. [2024-06-21 20:42:33,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 550 transitions, 9737 flow [2024-06-21 20:42:33,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:42:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:42:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 20:42:33,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 20:42:33,253 INFO L175 Difference]: Start difference. First operand has 500 places, 539 transitions, 8619 flow. Second operand 11 states and 134 transitions. [2024-06-21 20:42:33,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 550 transitions, 9737 flow [2024-06-21 20:42:35,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 550 transitions, 9307 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 20:42:35,843 INFO L231 Difference]: Finished difference. Result has 502 places, 539 transitions, 8355 flow [2024-06-21 20:42:35,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8189, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8355, PETRI_PLACES=502, PETRI_TRANSITIONS=539} [2024-06-21 20:42:35,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 471 predicate places. [2024-06-21 20:42:35,844 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 539 transitions, 8355 flow [2024-06-21 20:42:35,844 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) [2024-06-21 20:42:35,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:42:35,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:42:35,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 20:42:35,844 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)] === [2024-06-21 20:42:35,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:42:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash 295671475, now seen corresponding path program 28 times [2024-06-21 20:42:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:42:35,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082231056] [2024-06-21 20:42:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:42:35,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:42:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:42:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:42:36,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:42:36,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082231056] [2024-06-21 20:42:36,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082231056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:42:36,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:42:36,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:42:36,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438390607] [2024-06-21 20:42:36,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:42:36,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:42:36,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:42:36,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:42:36,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:42:36,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:42:36,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 539 transitions, 8355 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) [2024-06-21 20:42:36,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:42:36,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:42:36,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:37,697 INFO L124 PetriNetUnfolderBase]: 1065/1982 cut-off events. [2024-06-21 20:42:37,697 INFO L125 PetriNetUnfolderBase]: For 515432/515432 co-relation queries the response was YES. [2024-06-21 20:42:37,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20929 conditions, 1982 events. 1065/1982 cut-off events. For 515432/515432 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 12593 event pairs, 57 based on Foata normal form. 1/1978 useless extension candidates. Maximal degree in co-relation 20703. Up to 1605 conditions per place. [2024-06-21 20:42:37,726 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 451 selfloop transitions, 96 changer transitions 0/550 dead transitions. [2024-06-21 20:42:37,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 550 transitions, 9793 flow [2024-06-21 20:42:37,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:42:37,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:42:37,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 20:42:37,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 20:42:37,727 INFO L175 Difference]: Start difference. First operand has 502 places, 539 transitions, 8355 flow. Second operand 11 states and 144 transitions. [2024-06-21 20:42:37,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 550 transitions, 9793 flow [2024-06-21 20:42:40,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 550 transitions, 9559 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-21 20:42:40,402 INFO L231 Difference]: Finished difference. Result has 503 places, 539 transitions, 8318 flow [2024-06-21 20:42:40,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8121, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8318, PETRI_PLACES=503, PETRI_TRANSITIONS=539} [2024-06-21 20:42:40,402 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 472 predicate places. [2024-06-21 20:42:40,402 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 539 transitions, 8318 flow [2024-06-21 20:42:40,402 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) [2024-06-21 20:42:40,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:42:40,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:42:40,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 20:42:40,403 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)] === [2024-06-21 20:42:40,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:42:40,403 INFO L85 PathProgramCache]: Analyzing trace with hash 295671723, now seen corresponding path program 9 times [2024-06-21 20:42:40,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:42:40,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801172461] [2024-06-21 20:42:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:42:40,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:42:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:42:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:42:41,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:42:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801172461] [2024-06-21 20:42:41,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801172461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:42:41,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:42:41,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:42:41,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554842860] [2024-06-21 20:42:41,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:42:41,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:42:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:42:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:42:41,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:42:41,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:42:41,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 539 transitions, 8318 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) [2024-06-21 20:42:41,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:42:41,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:42:41,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:42,662 INFO L124 PetriNetUnfolderBase]: 1063/1979 cut-off events. [2024-06-21 20:42:42,662 INFO L125 PetriNetUnfolderBase]: For 508500/508500 co-relation queries the response was YES. [2024-06-21 20:42:42,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20729 conditions, 1979 events. 1063/1979 cut-off events. For 508500/508500 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 12560 event pairs, 58 based on Foata normal form. 1/1975 useless extension candidates. Maximal degree in co-relation 20502. Up to 1615 conditions per place. [2024-06-21 20:42:42,695 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 464 selfloop transitions, 83 changer transitions 0/550 dead transitions. [2024-06-21 20:42:42,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 550 transitions, 9438 flow [2024-06-21 20:42:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:42:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:42:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 20:42:42,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 20:42:42,696 INFO L175 Difference]: Start difference. First operand has 503 places, 539 transitions, 8318 flow. Second operand 11 states and 142 transitions. [2024-06-21 20:42:42,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 550 transitions, 9438 flow [2024-06-21 20:42:45,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 550 transitions, 9213 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 20:42:45,387 INFO L231 Difference]: Finished difference. Result has 505 places, 539 transitions, 8264 flow [2024-06-21 20:42:45,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8093, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8264, PETRI_PLACES=505, PETRI_TRANSITIONS=539} [2024-06-21 20:42:45,387 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 474 predicate places. [2024-06-21 20:42:45,387 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 539 transitions, 8264 flow [2024-06-21 20:42:45,387 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) [2024-06-21 20:42:45,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:42:45,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:42:45,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 20:42:45,388 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)] === [2024-06-21 20:42:45,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:42:45,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1698357927, now seen corresponding path program 17 times [2024-06-21 20:42:45,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:42:45,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690522020] [2024-06-21 20:42:45,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:42:45,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:42:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:42:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:42:46,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:42:46,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690522020] [2024-06-21 20:42:46,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690522020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:42:46,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:42:46,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:42:46,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738780665] [2024-06-21 20:42:46,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:42:46,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:42:46,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:42:46,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:42:46,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:42:46,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:42:46,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 539 transitions, 8264 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) [2024-06-21 20:42:46,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:42:46,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:42:46,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:47,656 INFO L124 PetriNetUnfolderBase]: 1067/1987 cut-off events. [2024-06-21 20:42:47,656 INFO L125 PetriNetUnfolderBase]: For 528890/528890 co-relation queries the response was YES. [2024-06-21 20:42:47,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20838 conditions, 1987 events. 1067/1987 cut-off events. For 528890/528890 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 12626 event pairs, 52 based on Foata normal form. 2/1985 useless extension candidates. Maximal degree in co-relation 20610. Up to 1748 conditions per place. [2024-06-21 20:42:47,690 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 503 selfloop transitions, 45 changer transitions 0/551 dead transitions. [2024-06-21 20:42:47,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 551 transitions, 9444 flow [2024-06-21 20:42:47,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:42:47,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:42:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 20:42:47,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:42:47,691 INFO L175 Difference]: Start difference. First operand has 505 places, 539 transitions, 8264 flow. Second operand 11 states and 132 transitions. [2024-06-21 20:42:47,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 551 transitions, 9444 flow [2024-06-21 20:42:50,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 551 transitions, 9266 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 20:42:50,515 INFO L231 Difference]: Finished difference. Result has 506 places, 540 transitions, 8242 flow [2024-06-21 20:42:50,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8086, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8242, PETRI_PLACES=506, PETRI_TRANSITIONS=540} [2024-06-21 20:42:50,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 475 predicate places. [2024-06-21 20:42:50,515 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 540 transitions, 8242 flow [2024-06-21 20:42:50,515 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) [2024-06-21 20:42:50,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:42:50,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:42:50,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 20:42:50,516 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)] === [2024-06-21 20:42:50,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:42:50,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2067978035, now seen corresponding path program 29 times [2024-06-21 20:42:50,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:42:50,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471725381] [2024-06-21 20:42:50,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:42:50,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:42:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:42:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:42:51,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:42:51,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471725381] [2024-06-21 20:42:51,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471725381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:42:51,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:42:51,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:42:51,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164762811] [2024-06-21 20:42:51,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:42:51,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:42:51,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:42:51,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:42:51,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:42:51,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:42:51,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 540 transitions, 8242 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) [2024-06-21 20:42:51,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:42:51,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:42:51,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:52,683 INFO L124 PetriNetUnfolderBase]: 1065/1984 cut-off events. [2024-06-21 20:42:52,683 INFO L125 PetriNetUnfolderBase]: For 508370/508370 co-relation queries the response was YES. [2024-06-21 20:42:52,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20585 conditions, 1984 events. 1065/1984 cut-off events. For 508370/508370 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 12621 event pairs, 57 based on Foata normal form. 1/1980 useless extension candidates. Maximal degree in co-relation 20356. Up to 1209 conditions per place. [2024-06-21 20:42:52,715 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 319 selfloop transitions, 236 changer transitions 0/558 dead transitions. [2024-06-21 20:42:52,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 558 transitions, 10236 flow [2024-06-21 20:42:52,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:42:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:42:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 20:42:52,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:42:52,716 INFO L175 Difference]: Start difference. First operand has 506 places, 540 transitions, 8242 flow. Second operand 11 states and 143 transitions. [2024-06-21 20:42:52,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 558 transitions, 10236 flow [2024-06-21 20:42:55,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 558 transitions, 10090 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-21 20:42:55,333 INFO L231 Difference]: Finished difference. Result has 509 places, 546 transitions, 8804 flow [2024-06-21 20:42:55,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8096, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8804, PETRI_PLACES=509, PETRI_TRANSITIONS=546} [2024-06-21 20:42:55,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 478 predicate places. [2024-06-21 20:42:55,334 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 546 transitions, 8804 flow [2024-06-21 20:42:55,334 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) [2024-06-21 20:42:55,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:42:55,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:42:55,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 20:42:55,335 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)] === [2024-06-21 20:42:55,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:42:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1321469209, now seen corresponding path program 18 times [2024-06-21 20:42:55,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:42:55,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033262043] [2024-06-21 20:42:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:42:55,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:42:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:42:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:42:56,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:42:56,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033262043] [2024-06-21 20:42:56,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033262043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:42:56,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:42:56,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:42:56,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372255612] [2024-06-21 20:42:56,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:42:56,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:42:56,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:42:56,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:42:56,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:42:56,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:42:56,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 546 transitions, 8804 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) [2024-06-21 20:42:56,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:42:56,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:42:56,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:42:57,436 INFO L124 PetriNetUnfolderBase]: 1069/1990 cut-off events. [2024-06-21 20:42:57,437 INFO L125 PetriNetUnfolderBase]: For 529693/529693 co-relation queries the response was YES. [2024-06-21 20:42:57,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21100 conditions, 1990 events. 1069/1990 cut-off events. For 529693/529693 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 12658 event pairs, 50 based on Foata normal form. 2/1988 useless extension candidates. Maximal degree in co-relation 20869. Up to 1706 conditions per place. [2024-06-21 20:42:57,471 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 501 selfloop transitions, 56 changer transitions 0/560 dead transitions. [2024-06-21 20:42:57,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 560 transitions, 10336 flow [2024-06-21 20:42:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:42:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:42:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 20:42:57,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 20:42:57,472 INFO L175 Difference]: Start difference. First operand has 509 places, 546 transitions, 8804 flow. Second operand 11 states and 135 transitions. [2024-06-21 20:42:57,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 560 transitions, 10336 flow [2024-06-21 20:43:00,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 560 transitions, 9841 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-21 20:43:00,114 INFO L231 Difference]: Finished difference. Result has 512 places, 547 transitions, 8487 flow [2024-06-21 20:43:00,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8309, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8487, PETRI_PLACES=512, PETRI_TRANSITIONS=547} [2024-06-21 20:43:00,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 481 predicate places. [2024-06-21 20:43:00,114 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 547 transitions, 8487 flow [2024-06-21 20:43:00,114 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) [2024-06-21 20:43:00,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:00,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:00,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 20:43:00,115 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)] === [2024-06-21 20:43:00,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2068215185, now seen corresponding path program 30 times [2024-06-21 20:43:00,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:00,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654781890] [2024-06-21 20:43:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:00,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:01,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:01,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654781890] [2024-06-21 20:43:01,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654781890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:01,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:01,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:01,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103651797] [2024-06-21 20:43:01,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:01,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:01,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:01,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:01,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:01,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:01,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 547 transitions, 8487 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) [2024-06-21 20:43:01,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:01,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:01,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:43:02,027 INFO L124 PetriNetUnfolderBase]: 1070/1992 cut-off events. [2024-06-21 20:43:02,027 INFO L125 PetriNetUnfolderBase]: For 518226/518226 co-relation queries the response was YES. [2024-06-21 20:43:02,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20641 conditions, 1992 events. 1070/1992 cut-off events. For 518226/518226 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 12649 event pairs, 57 based on Foata normal form. 2/1989 useless extension candidates. Maximal degree in co-relation 20409. Up to 830 conditions per place. [2024-06-21 20:43:02,061 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 314 selfloop transitions, 247 changer transitions 0/564 dead transitions. [2024-06-21 20:43:02,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 564 transitions, 11044 flow [2024-06-21 20:43:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:43:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:43:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-21 20:43:02,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 20:43:02,063 INFO L175 Difference]: Start difference. First operand has 512 places, 547 transitions, 8487 flow. Second operand 11 states and 154 transitions. [2024-06-21 20:43:02,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 564 transitions, 11044 flow [2024-06-21 20:43:04,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 564 transitions, 10689 flow, removed 79 selfloop flow, removed 10 redundant places. [2024-06-21 20:43:04,674 INFO L231 Difference]: Finished difference. Result has 513 places, 549 transitions, 8712 flow [2024-06-21 20:43:04,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8142, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8712, PETRI_PLACES=513, PETRI_TRANSITIONS=549} [2024-06-21 20:43:04,674 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 482 predicate places. [2024-06-21 20:43:04,674 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 549 transitions, 8712 flow [2024-06-21 20:43:04,674 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) [2024-06-21 20:43:04,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:04,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:04,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 20:43:04,674 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)] === [2024-06-21 20:43:04,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:04,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1321768049, now seen corresponding path program 10 times [2024-06-21 20:43:04,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:04,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967317593] [2024-06-21 20:43:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:04,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:05,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:05,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967317593] [2024-06-21 20:43:05,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967317593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:05,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:05,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:05,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260178449] [2024-06-21 20:43:05,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:05,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:05,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:05,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:05,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:06,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:06,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 549 transitions, 8712 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) [2024-06-21 20:43:06,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:06,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:06,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:43:06,905 INFO L124 PetriNetUnfolderBase]: 1078/2005 cut-off events. [2024-06-21 20:43:06,905 INFO L125 PetriNetUnfolderBase]: For 526094/526094 co-relation queries the response was YES. [2024-06-21 20:43:06,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21011 conditions, 2005 events. 1078/2005 cut-off events. For 526094/526094 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12766 event pairs, 60 based on Foata normal form. 1/2001 useless extension candidates. Maximal degree in co-relation 20780. Up to 1636 conditions per place. [2024-06-21 20:43:06,938 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 474 selfloop transitions, 88 changer transitions 0/565 dead transitions. [2024-06-21 20:43:06,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 565 transitions, 10352 flow [2024-06-21 20:43:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:43:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:43:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 20:43:06,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 20:43:06,939 INFO L175 Difference]: Start difference. First operand has 513 places, 549 transitions, 8712 flow. Second operand 11 states and 145 transitions. [2024-06-21 20:43:06,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 565 transitions, 10352 flow [2024-06-21 20:43:09,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 565 transitions, 9704 flow, removed 44 selfloop flow, removed 10 redundant places. [2024-06-21 20:43:09,741 INFO L231 Difference]: Finished difference. Result has 514 places, 553 transitions, 8405 flow [2024-06-21 20:43:09,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8068, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8405, PETRI_PLACES=514, PETRI_TRANSITIONS=553} [2024-06-21 20:43:09,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 483 predicate places. [2024-06-21 20:43:09,741 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 553 transitions, 8405 flow [2024-06-21 20:43:09,741 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) [2024-06-21 20:43:09,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:09,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:09,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 20:43:09,741 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)] === [2024-06-21 20:43:09,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:09,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1321776667, now seen corresponding path program 31 times [2024-06-21 20:43:09,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:09,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254251605] [2024-06-21 20:43:09,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:09,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:10,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254251605] [2024-06-21 20:43:10,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254251605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:10,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:10,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:10,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702100482] [2024-06-21 20:43:10,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:10,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:10,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:10,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:10,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:11,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:11,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 553 transitions, 8405 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) [2024-06-21 20:43:11,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:11,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:11,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:43:11,719 INFO L124 PetriNetUnfolderBase]: 1076/2000 cut-off events. [2024-06-21 20:43:11,719 INFO L125 PetriNetUnfolderBase]: For 514876/514876 co-relation queries the response was YES. [2024-06-21 20:43:11,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20220 conditions, 2000 events. 1076/2000 cut-off events. For 514876/514876 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12718 event pairs, 57 based on Foata normal form. 1/1996 useless extension candidates. Maximal degree in co-relation 19990. Up to 1628 conditions per place. [2024-06-21 20:43:11,753 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 460 selfloop transitions, 100 changer transitions 0/563 dead transitions. [2024-06-21 20:43:11,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 563 transitions, 9547 flow [2024-06-21 20:43:11,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:43:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:43:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 20:43:11,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 20:43:11,753 INFO L175 Difference]: Start difference. First operand has 514 places, 553 transitions, 8405 flow. Second operand 11 states and 141 transitions. [2024-06-21 20:43:11,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 563 transitions, 9547 flow [2024-06-21 20:43:14,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 563 transitions, 9253 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-21 20:43:14,129 INFO L231 Difference]: Finished difference. Result has 517 places, 553 transitions, 8316 flow [2024-06-21 20:43:14,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8111, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8316, PETRI_PLACES=517, PETRI_TRANSITIONS=553} [2024-06-21 20:43:14,129 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 486 predicate places. [2024-06-21 20:43:14,129 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 553 transitions, 8316 flow [2024-06-21 20:43:14,129 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) [2024-06-21 20:43:14,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:14,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:14,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 20:43:14,129 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)] === [2024-06-21 20:43:14,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:14,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1321776419, now seen corresponding path program 11 times [2024-06-21 20:43:14,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:14,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875917104] [2024-06-21 20:43:14,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:14,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:15,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:15,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875917104] [2024-06-21 20:43:15,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875917104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:15,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:15,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:15,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142675649] [2024-06-21 20:43:15,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:15,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:15,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:15,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:15,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:15,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:15,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 553 transitions, 8316 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) [2024-06-21 20:43:15,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:15,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:15,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:43:16,265 INFO L124 PetriNetUnfolderBase]: 1074/1997 cut-off events. [2024-06-21 20:43:16,266 INFO L125 PetriNetUnfolderBase]: For 505232/505232 co-relation queries the response was YES. [2024-06-21 20:43:16,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19969 conditions, 1997 events. 1074/1997 cut-off events. For 505232/505232 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12706 event pairs, 60 based on Foata normal form. 1/1993 useless extension candidates. Maximal degree in co-relation 19738. Up to 1637 conditions per place. [2024-06-21 20:43:16,300 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 476 selfloop transitions, 85 changer transitions 0/564 dead transitions. [2024-06-21 20:43:16,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 564 transitions, 9464 flow [2024-06-21 20:43:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:43:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:43:16,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 20:43:16,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 20:43:16,301 INFO L175 Difference]: Start difference. First operand has 517 places, 553 transitions, 8316 flow. Second operand 11 states and 142 transitions. [2024-06-21 20:43:16,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 564 transitions, 9464 flow [2024-06-21 20:43:18,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 564 transitions, 9224 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-21 20:43:18,880 INFO L231 Difference]: Finished difference. Result has 517 places, 553 transitions, 8251 flow [2024-06-21 20:43:18,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8076, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8251, PETRI_PLACES=517, PETRI_TRANSITIONS=553} [2024-06-21 20:43:18,880 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 486 predicate places. [2024-06-21 20:43:18,880 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 553 transitions, 8251 flow [2024-06-21 20:43:18,880 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) [2024-06-21 20:43:18,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:18,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:18,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 20:43:18,880 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)] === [2024-06-21 20:43:18,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:18,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1321479439, now seen corresponding path program 19 times [2024-06-21 20:43:18,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:18,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549910653] [2024-06-21 20:43:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:18,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:20,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:20,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549910653] [2024-06-21 20:43:20,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549910653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:20,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:20,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:20,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599415607] [2024-06-21 20:43:20,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:20,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:20,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:20,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:20,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:20,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:20,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 553 transitions, 8251 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) [2024-06-21 20:43:20,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:20,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:20,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:43:20,942 INFO L124 PetriNetUnfolderBase]: 1071/1996 cut-off events. [2024-06-21 20:43:20,942 INFO L125 PetriNetUnfolderBase]: For 496527/496527 co-relation queries the response was YES. [2024-06-21 20:43:20,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19547 conditions, 1996 events. 1071/1996 cut-off events. For 496527/496527 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12719 event pairs, 51 based on Foata normal form. 2/1994 useless extension candidates. Maximal degree in co-relation 19315. Up to 1745 conditions per place. [2024-06-21 20:43:20,972 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 509 selfloop transitions, 52 changer transitions 0/564 dead transitions. [2024-06-21 20:43:20,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 564 transitions, 9397 flow [2024-06-21 20:43:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:43:20,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:43:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 20:43:20,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 20:43:20,973 INFO L175 Difference]: Start difference. First operand has 517 places, 553 transitions, 8251 flow. Second operand 11 states and 133 transitions. [2024-06-21 20:43:20,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 564 transitions, 9397 flow [2024-06-21 20:43:23,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 564 transitions, 9182 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-21 20:43:23,255 INFO L231 Difference]: Finished difference. Result has 518 places, 553 transitions, 8144 flow [2024-06-21 20:43:23,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8036, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8144, PETRI_PLACES=518, PETRI_TRANSITIONS=553} [2024-06-21 20:43:23,255 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2024-06-21 20:43:23,256 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 553 transitions, 8144 flow [2024-06-21 20:43:23,256 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) [2024-06-21 20:43:23,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:23,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:23,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 20:43:23,256 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)] === [2024-06-21 20:43:23,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:23,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1321479749, now seen corresponding path program 12 times [2024-06-21 20:43:23,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:23,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489926237] [2024-06-21 20:43:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:23,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:24,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:24,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489926237] [2024-06-21 20:43:24,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489926237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:24,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:24,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:24,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322650399] [2024-06-21 20:43:24,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:24,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:24,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:24,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:24,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:24,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:24,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 553 transitions, 8144 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) [2024-06-21 20:43:24,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:24,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:24,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:43:25,135 INFO L124 PetriNetUnfolderBase]: 1069/1991 cut-off events. [2024-06-21 20:43:25,136 INFO L125 PetriNetUnfolderBase]: For 471812/471812 co-relation queries the response was YES. [2024-06-21 20:43:25,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19216 conditions, 1991 events. 1069/1991 cut-off events. For 471812/471812 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12678 event pairs, 56 based on Foata normal form. 1/1987 useless extension candidates. Maximal degree in co-relation 18983. Up to 1606 conditions per place. [2024-06-21 20:43:25,169 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 452 selfloop transitions, 108 changer transitions 0/563 dead transitions. [2024-06-21 20:43:25,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 563 transitions, 9286 flow [2024-06-21 20:43:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:43:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:43:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 20:43:25,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 20:43:25,170 INFO L175 Difference]: Start difference. First operand has 518 places, 553 transitions, 8144 flow. Second operand 11 states and 144 transitions. [2024-06-21 20:43:25,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 563 transitions, 9286 flow [2024-06-21 20:43:27,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 563 transitions, 9067 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 20:43:27,512 INFO L231 Difference]: Finished difference. Result has 518 places, 553 transitions, 8146 flow [2024-06-21 20:43:27,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7925, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8146, PETRI_PLACES=518, PETRI_TRANSITIONS=553} [2024-06-21 20:43:27,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2024-06-21 20:43:27,513 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 553 transitions, 8146 flow [2024-06-21 20:43:27,513 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) [2024-06-21 20:43:27,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:27,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:27,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 20:43:27,513 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)] === [2024-06-21 20:43:27,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:27,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1386981885, now seen corresponding path program 32 times [2024-06-21 20:43:27,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:27,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930732746] [2024-06-21 20:43:27,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:27,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:28,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:28,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930732746] [2024-06-21 20:43:28,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930732746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:28,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:28,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:28,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174950546] [2024-06-21 20:43:28,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:28,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:28,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:28,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:28,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:28,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:28,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 553 transitions, 8146 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) [2024-06-21 20:43:28,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:28,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:28,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:43:29,539 INFO L124 PetriNetUnfolderBase]: 1182/2187 cut-off events. [2024-06-21 20:43:29,539 INFO L125 PetriNetUnfolderBase]: For 601234/601234 co-relation queries the response was YES. [2024-06-21 20:43:29,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22247 conditions, 2187 events. 1182/2187 cut-off events. For 601234/601234 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 14009 event pairs, 47 based on Foata normal form. 2/2187 useless extension candidates. Maximal degree in co-relation 22013. Up to 1609 conditions per place. [2024-06-21 20:43:29,576 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 532 selfloop transitions, 132 changer transitions 0/667 dead transitions. [2024-06-21 20:43:29,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 667 transitions, 12121 flow [2024-06-21 20:43:29,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:43:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:43:29,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-21 20:43:29,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 20:43:29,577 INFO L175 Difference]: Start difference. First operand has 518 places, 553 transitions, 8146 flow. Second operand 12 states and 162 transitions. [2024-06-21 20:43:29,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 667 transitions, 12121 flow [2024-06-21 20:43:32,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 667 transitions, 11268 flow, removed 59 selfloop flow, removed 16 redundant places. [2024-06-21 20:43:32,526 INFO L231 Difference]: Finished difference. Result has 518 places, 605 transitions, 8941 flow [2024-06-21 20:43:32,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7385, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8941, PETRI_PLACES=518, PETRI_TRANSITIONS=605} [2024-06-21 20:43:32,527 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2024-06-21 20:43:32,527 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 605 transitions, 8941 flow [2024-06-21 20:43:32,527 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) [2024-06-21 20:43:32,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:32,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:32,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 20:43:32,527 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)] === [2024-06-21 20:43:32,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1377821923, now seen corresponding path program 1 times [2024-06-21 20:43:32,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:32,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478970448] [2024-06-21 20:43:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:32,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:33,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:33,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478970448] [2024-06-21 20:43:33,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478970448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:33,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:33,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363172475] [2024-06-21 20:43:33,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:33,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:33,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:33,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:33,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:33,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 605 transitions, 8941 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) [2024-06-21 20:43:33,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:33,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:33,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:43:34,581 INFO L124 PetriNetUnfolderBase]: 1186/2199 cut-off events. [2024-06-21 20:43:34,581 INFO L125 PetriNetUnfolderBase]: For 609498/609498 co-relation queries the response was YES. [2024-06-21 20:43:34,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21850 conditions, 2199 events. 1186/2199 cut-off events. For 609498/609498 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 14136 event pairs, 64 based on Foata normal form. 2/2199 useless extension candidates. Maximal degree in co-relation 21618. Up to 1935 conditions per place. [2024-06-21 20:43:34,622 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 594 selfloop transitions, 31 changer transitions 0/628 dead transitions. [2024-06-21 20:43:34,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 628 transitions, 10293 flow [2024-06-21 20:43:34,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:43:34,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:43:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 20:43:34,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 20:43:34,623 INFO L175 Difference]: Start difference. First operand has 518 places, 605 transitions, 8941 flow. Second operand 11 states and 136 transitions. [2024-06-21 20:43:34,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 628 transitions, 10293 flow [2024-06-21 20:43:37,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 628 transitions, 10174 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-21 20:43:37,695 INFO L231 Difference]: Finished difference. Result has 524 places, 606 transitions, 8936 flow [2024-06-21 20:43:37,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8822, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8936, PETRI_PLACES=524, PETRI_TRANSITIONS=606} [2024-06-21 20:43:37,695 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 493 predicate places. [2024-06-21 20:43:37,695 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 606 transitions, 8936 flow [2024-06-21 20:43:37,695 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) [2024-06-21 20:43:37,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:37,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:37,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 20:43:37,696 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)] === [2024-06-21 20:43:37,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:37,697 INFO L85 PathProgramCache]: Analyzing trace with hash -496109441, now seen corresponding path program 2 times [2024-06-21 20:43:37,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:37,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181843043] [2024-06-21 20:43:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:37,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:38,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:38,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181843043] [2024-06-21 20:43:38,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181843043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:38,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:38,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:38,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018987799] [2024-06-21 20:43:38,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:38,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:38,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:38,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:38,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:38,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 606 transitions, 8936 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) [2024-06-21 20:43:38,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:38,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:38,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:43:39,636 INFO L124 PetriNetUnfolderBase]: 1190/2207 cut-off events. [2024-06-21 20:43:39,636 INFO L125 PetriNetUnfolderBase]: For 616173/616173 co-relation queries the response was YES. [2024-06-21 20:43:39,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21999 conditions, 2207 events. 1190/2207 cut-off events. For 616173/616173 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 14213 event pairs, 82 based on Foata normal form. 2/2207 useless extension candidates. Maximal degree in co-relation 21765. Up to 1965 conditions per place. [2024-06-21 20:43:39,670 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 591 selfloop transitions, 33 changer transitions 0/627 dead transitions. [2024-06-21 20:43:39,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 627 transitions, 10284 flow [2024-06-21 20:43:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:43:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:43:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 20:43:39,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 20:43:39,671 INFO L175 Difference]: Start difference. First operand has 524 places, 606 transitions, 8936 flow. Second operand 11 states and 137 transitions. [2024-06-21 20:43:39,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 627 transitions, 10284 flow [2024-06-21 20:43:42,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 627 transitions, 10180 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 20:43:42,715 INFO L231 Difference]: Finished difference. Result has 526 places, 607 transitions, 8952 flow [2024-06-21 20:43:42,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8832, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8952, PETRI_PLACES=526, PETRI_TRANSITIONS=607} [2024-06-21 20:43:42,715 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 495 predicate places. [2024-06-21 20:43:42,715 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 607 transitions, 8952 flow [2024-06-21 20:43:42,715 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) [2024-06-21 20:43:42,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:42,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:42,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 20:43:42,716 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)] === [2024-06-21 20:43:42,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:42,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1434706317, now seen corresponding path program 3 times [2024-06-21 20:43:42,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:42,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108939530] [2024-06-21 20:43:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:42,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:43,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108939530] [2024-06-21 20:43:43,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108939530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:43,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:43,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:43,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092318581] [2024-06-21 20:43:43,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:43,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:43,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:43,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:43,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:43,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:43,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 607 transitions, 8952 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) [2024-06-21 20:43:43,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:43,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:43,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:43:44,627 INFO L124 PetriNetUnfolderBase]: 1194/2215 cut-off events. [2024-06-21 20:43:44,627 INFO L125 PetriNetUnfolderBase]: For 629621/629621 co-relation queries the response was YES. [2024-06-21 20:43:44,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22076 conditions, 2215 events. 1194/2215 cut-off events. For 629621/629621 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 14299 event pairs, 80 based on Foata normal form. 2/2215 useless extension candidates. Maximal degree in co-relation 21841. Up to 1968 conditions per place. [2024-06-21 20:43:44,666 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 594 selfloop transitions, 32 changer transitions 0/629 dead transitions. [2024-06-21 20:43:44,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 629 transitions, 10308 flow [2024-06-21 20:43:44,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:43:44,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:43:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 20:43:44,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 20:43:44,667 INFO L175 Difference]: Start difference. First operand has 526 places, 607 transitions, 8952 flow. Second operand 11 states and 137 transitions. [2024-06-21 20:43:44,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 629 transitions, 10308 flow [2024-06-21 20:43:47,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 629 transitions, 10198 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 20:43:47,854 INFO L231 Difference]: Finished difference. Result has 528 places, 608 transitions, 8962 flow [2024-06-21 20:43:47,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8842, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8962, PETRI_PLACES=528, PETRI_TRANSITIONS=608} [2024-06-21 20:43:47,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 497 predicate places. [2024-06-21 20:43:47,854 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 608 transitions, 8962 flow [2024-06-21 20:43:47,855 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) [2024-06-21 20:43:47,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:47,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:47,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 20:43:47,855 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)] === [2024-06-21 20:43:47,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1217050467, now seen corresponding path program 4 times [2024-06-21 20:43:47,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:47,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384007561] [2024-06-21 20:43:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:47,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:48,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:48,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384007561] [2024-06-21 20:43:48,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384007561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:48,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:48,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:48,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131767881] [2024-06-21 20:43:48,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:48,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:48,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:48,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:48,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:49,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:49,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 608 transitions, 8962 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) [2024-06-21 20:43:49,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:49,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:49,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:43:49,910 INFO L124 PetriNetUnfolderBase]: 1198/2223 cut-off events. [2024-06-21 20:43:49,911 INFO L125 PetriNetUnfolderBase]: For 636778/636778 co-relation queries the response was YES. [2024-06-21 20:43:49,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22151 conditions, 2223 events. 1198/2223 cut-off events. For 636778/636778 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 14368 event pairs, 79 based on Foata normal form. 2/2223 useless extension candidates. Maximal degree in co-relation 21915. Up to 1969 conditions per place. [2024-06-21 20:43:49,949 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 581 selfloop transitions, 43 changer transitions 0/627 dead transitions. [2024-06-21 20:43:49,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 627 transitions, 10315 flow [2024-06-21 20:43:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:43:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:43:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 20:43:49,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 20:43:49,950 INFO L175 Difference]: Start difference. First operand has 528 places, 608 transitions, 8962 flow. Second operand 11 states and 134 transitions. [2024-06-21 20:43:49,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 627 transitions, 10315 flow [2024-06-21 20:43:53,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 627 transitions, 10205 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 20:43:53,020 INFO L231 Difference]: Finished difference. Result has 531 places, 610 transitions, 9017 flow [2024-06-21 20:43:53,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8852, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9017, PETRI_PLACES=531, PETRI_TRANSITIONS=610} [2024-06-21 20:43:53,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 500 predicate places. [2024-06-21 20:43:53,021 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 610 transitions, 9017 flow [2024-06-21 20:43:53,021 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) [2024-06-21 20:43:53,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:53,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:53,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 20:43:53,021 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)] === [2024-06-21 20:43:53,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:53,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1217198337, now seen corresponding path program 5 times [2024-06-21 20:43:53,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:53,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925884758] [2024-06-21 20:43:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:53,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:54,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:54,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925884758] [2024-06-21 20:43:54,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925884758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:54,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:54,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:54,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498062852] [2024-06-21 20:43:54,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:54,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:54,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:54,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:54,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:54,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 610 transitions, 9017 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) [2024-06-21 20:43:54,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:54,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:54,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:43:55,048 INFO L124 PetriNetUnfolderBase]: 1202/2231 cut-off events. [2024-06-21 20:43:55,048 INFO L125 PetriNetUnfolderBase]: For 644247/644247 co-relation queries the response was YES. [2024-06-21 20:43:55,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22266 conditions, 2231 events. 1202/2231 cut-off events. For 644247/644247 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 14404 event pairs, 78 based on Foata normal form. 2/2231 useless extension candidates. Maximal degree in co-relation 22028. Up to 1975 conditions per place. [2024-06-21 20:43:55,085 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 585 selfloop transitions, 41 changer transitions 0/629 dead transitions. [2024-06-21 20:43:55,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 629 transitions, 10367 flow [2024-06-21 20:43:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:43:55,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:43:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 20:43:55,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 20:43:55,086 INFO L175 Difference]: Start difference. First operand has 531 places, 610 transitions, 9017 flow. Second operand 11 states and 134 transitions. [2024-06-21 20:43:55,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 629 transitions, 10367 flow [2024-06-21 20:43:58,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 629 transitions, 10241 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 20:43:58,117 INFO L231 Difference]: Finished difference. Result has 534 places, 611 transitions, 9033 flow [2024-06-21 20:43:58,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8891, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9033, PETRI_PLACES=534, PETRI_TRANSITIONS=611} [2024-06-21 20:43:58,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 503 predicate places. [2024-06-21 20:43:58,117 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 611 transitions, 9033 flow [2024-06-21 20:43:58,117 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) [2024-06-21 20:43:58,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:43:58,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:43:58,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 20:43:58,118 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)] === [2024-06-21 20:43:58,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:43:58,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1290667917, now seen corresponding path program 6 times [2024-06-21 20:43:58,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:43:58,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540585061] [2024-06-21 20:43:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:43:58,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:43:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:43:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:43:59,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:43:59,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540585061] [2024-06-21 20:43:59,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540585061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:43:59,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:43:59,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:43:59,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240358685] [2024-06-21 20:43:59,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:43:59,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:43:59,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:43:59,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:43:59,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:43:59,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:43:59,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 611 transitions, 9033 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) [2024-06-21 20:43:59,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:43:59,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:43:59,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:44:00,111 INFO L124 PetriNetUnfolderBase]: 1206/2239 cut-off events. [2024-06-21 20:44:00,111 INFO L125 PetriNetUnfolderBase]: For 651742/651742 co-relation queries the response was YES. [2024-06-21 20:44:00,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22347 conditions, 2239 events. 1206/2239 cut-off events. For 651742/651742 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 14499 event pairs, 76 based on Foata normal form. 2/2239 useless extension candidates. Maximal degree in co-relation 22108. Up to 1969 conditions per place. [2024-06-21 20:44:00,152 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 579 selfloop transitions, 47 changer transitions 0/629 dead transitions. [2024-06-21 20:44:00,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 629 transitions, 10383 flow [2024-06-21 20:44:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:44:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:44:00,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 20:44:00,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 20:44:00,153 INFO L175 Difference]: Start difference. First operand has 534 places, 611 transitions, 9033 flow. Second operand 11 states and 136 transitions. [2024-06-21 20:44:00,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 629 transitions, 10383 flow [2024-06-21 20:44:03,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 629 transitions, 10251 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 20:44:03,446 INFO L231 Difference]: Finished difference. Result has 536 places, 612 transitions, 9058 flow [2024-06-21 20:44:03,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8901, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9058, PETRI_PLACES=536, PETRI_TRANSITIONS=612} [2024-06-21 20:44:03,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 505 predicate places. [2024-06-21 20:44:03,446 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 612 transitions, 9058 flow [2024-06-21 20:44:03,447 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) [2024-06-21 20:44:03,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:44:03,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:44:03,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 20:44:03,447 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)] === [2024-06-21 20:44:03,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:44:03,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1290452436, now seen corresponding path program 1 times [2024-06-21 20:44:03,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:44:03,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945899021] [2024-06-21 20:44:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:44:03,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:44:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:44:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:44:04,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:44:04,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945899021] [2024-06-21 20:44:04,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945899021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:44:04,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:44:04,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:44:04,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089785206] [2024-06-21 20:44:04,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:44:04,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:44:04,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:44:04,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:44:04,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:44:04,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:44:04,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 612 transitions, 9058 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:44:04,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:44:04,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:44:04,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:44:05,848 INFO L124 PetriNetUnfolderBase]: 1222/2272 cut-off events. [2024-06-21 20:44:05,849 INFO L125 PetriNetUnfolderBase]: For 779990/779990 co-relation queries the response was YES. [2024-06-21 20:44:05,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22581 conditions, 2272 events. 1222/2272 cut-off events. For 779990/779990 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 14739 event pairs, 77 based on Foata normal form. 10/2277 useless extension candidates. Maximal degree in co-relation 22341. Up to 1951 conditions per place. [2024-06-21 20:44:05,889 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 574 selfloop transitions, 52 changer transitions 5/634 dead transitions. [2024-06-21 20:44:05,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 634 transitions, 10474 flow [2024-06-21 20:44:05,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:44:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:44:05,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 20:44:05,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 20:44:05,889 INFO L175 Difference]: Start difference. First operand has 536 places, 612 transitions, 9058 flow. Second operand 12 states and 151 transitions. [2024-06-21 20:44:05,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 634 transitions, 10474 flow [2024-06-21 20:44:09,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 634 transitions, 10329 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-21 20:44:09,227 INFO L231 Difference]: Finished difference. Result has 539 places, 611 transitions, 9011 flow [2024-06-21 20:44:09,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8913, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9011, PETRI_PLACES=539, PETRI_TRANSITIONS=611} [2024-06-21 20:44:09,227 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 508 predicate places. [2024-06-21 20:44:09,228 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 611 transitions, 9011 flow [2024-06-21 20:44:09,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:44:09,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:44:09,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:44:09,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 20:44:09,228 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)] === [2024-06-21 20:44:09,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:44:09,229 INFO L85 PathProgramCache]: Analyzing trace with hash -658930985, now seen corresponding path program 1 times [2024-06-21 20:44:09,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:44:09,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923507403] [2024-06-21 20:44:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:44:09,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:44:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:44:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:44:10,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:44:10,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923507403] [2024-06-21 20:44:10,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923507403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:44:10,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:44:10,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:44:10,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480211320] [2024-06-21 20:44:10,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:44:10,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:44:10,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:44:10,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:44:10,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:44:10,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:44:10,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 611 transitions, 9011 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:44:10,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:44:10,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:44:10,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:44:12,035 INFO L124 PetriNetUnfolderBase]: 1220/2273 cut-off events. [2024-06-21 20:44:12,035 INFO L125 PetriNetUnfolderBase]: For 666748/666748 co-relation queries the response was YES. [2024-06-21 20:44:12,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22623 conditions, 2273 events. 1220/2273 cut-off events. For 666748/666748 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 14792 event pairs, 75 based on Foata normal form. 2/2273 useless extension candidates. Maximal degree in co-relation 22382. Up to 1955 conditions per place. [2024-06-21 20:44:12,075 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 560 selfloop transitions, 70 changer transitions 0/633 dead transitions. [2024-06-21 20:44:12,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 633 transitions, 10847 flow [2024-06-21 20:44:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:44:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:44:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 20:44:12,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 20:44:12,076 INFO L175 Difference]: Start difference. First operand has 539 places, 611 transitions, 9011 flow. Second operand 12 states and 151 transitions. [2024-06-21 20:44:12,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 633 transitions, 10847 flow [2024-06-21 20:44:15,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 633 transitions, 10727 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-21 20:44:15,436 INFO L231 Difference]: Finished difference. Result has 541 places, 615 transitions, 9213 flow [2024-06-21 20:44:15,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8891, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9213, PETRI_PLACES=541, PETRI_TRANSITIONS=615} [2024-06-21 20:44:15,437 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 510 predicate places. [2024-06-21 20:44:15,437 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 615 transitions, 9213 flow [2024-06-21 20:44:15,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:44:15,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:44:15,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:44:15,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 20:44:15,438 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)] === [2024-06-21 20:44:15,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:44:15,438 INFO L85 PathProgramCache]: Analyzing trace with hash -658729175, now seen corresponding path program 2 times [2024-06-21 20:44:15,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:44:15,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434123133] [2024-06-21 20:44:15,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:44:15,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:44:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:44:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:44:16,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:44:16,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434123133] [2024-06-21 20:44:16,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434123133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:44:16,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:44:16,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:44:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90253480] [2024-06-21 20:44:16,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:44:16,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:44:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:44:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:44:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:44:17,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:44:17,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 615 transitions, 9213 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:44:17,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:44:17,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:44:17,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:44:18,007 INFO L124 PetriNetUnfolderBase]: 1216/2267 cut-off events. [2024-06-21 20:44:18,007 INFO L125 PetriNetUnfolderBase]: For 641494/641494 co-relation queries the response was YES. [2024-06-21 20:44:18,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22224 conditions, 2267 events. 1216/2267 cut-off events. For 641494/641494 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 14746 event pairs, 76 based on Foata normal form. 2/2267 useless extension candidates. Maximal degree in co-relation 21982. Up to 1975 conditions per place. [2024-06-21 20:44:18,047 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 567 selfloop transitions, 62 changer transitions 0/632 dead transitions. [2024-06-21 20:44:18,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 632 transitions, 10513 flow [2024-06-21 20:44:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:44:18,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:44:18,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 20:44:18,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 20:44:18,048 INFO L175 Difference]: Start difference. First operand has 541 places, 615 transitions, 9213 flow. Second operand 12 states and 147 transitions. [2024-06-21 20:44:18,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 632 transitions, 10513 flow [2024-06-21 20:44:21,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 632 transitions, 10161 flow, removed 106 selfloop flow, removed 10 redundant places. [2024-06-21 20:44:21,282 INFO L231 Difference]: Finished difference. Result has 543 places, 615 transitions, 8993 flow [2024-06-21 20:44:21,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8861, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8993, PETRI_PLACES=543, PETRI_TRANSITIONS=615} [2024-06-21 20:44:21,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 512 predicate places. [2024-06-21 20:44:21,283 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 615 transitions, 8993 flow [2024-06-21 20:44:21,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:44:21,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:44:21,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:44:21,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 20:44:21,283 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)] === [2024-06-21 20:44:21,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:44:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash 342468701, now seen corresponding path program 7 times [2024-06-21 20:44:21,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:44:21,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009115680] [2024-06-21 20:44:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:44:21,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:44:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:44:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:44:22,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:44:22,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009115680] [2024-06-21 20:44:22,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009115680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:44:22,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:44:22,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:44:22,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311613469] [2024-06-21 20:44:22,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:44:22,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:44:22,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:44:22,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:44:22,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:44:22,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:44:22,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 615 transitions, 8993 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) [2024-06-21 20:44:22,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:44:22,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:44:22,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:44:23,672 INFO L124 PetriNetUnfolderBase]: 1220/2275 cut-off events. [2024-06-21 20:44:23,672 INFO L125 PetriNetUnfolderBase]: For 646394/646394 co-relation queries the response was YES. [2024-06-21 20:44:23,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22169 conditions, 2275 events. 1220/2275 cut-off events. For 646394/646394 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 14784 event pairs, 83 based on Foata normal form. 2/2275 useless extension candidates. Maximal degree in co-relation 21926. Up to 1981 conditions per place. [2024-06-21 20:44:23,711 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 580 selfloop transitions, 50 changer transitions 0/633 dead transitions. [2024-06-21 20:44:23,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 633 transitions, 10361 flow [2024-06-21 20:44:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:44:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:44:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 20:44:23,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 20:44:23,712 INFO L175 Difference]: Start difference. First operand has 543 places, 615 transitions, 8993 flow. Second operand 11 states and 135 transitions. [2024-06-21 20:44:23,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 633 transitions, 10361 flow [2024-06-21 20:44:26,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 633 transitions, 10136 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 20:44:26,918 INFO L231 Difference]: Finished difference. Result has 543 places, 617 transitions, 8950 flow [2024-06-21 20:44:26,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8768, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8950, PETRI_PLACES=543, PETRI_TRANSITIONS=617} [2024-06-21 20:44:26,919 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 512 predicate places. [2024-06-21 20:44:26,919 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 617 transitions, 8950 flow [2024-06-21 20:44:26,919 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) [2024-06-21 20:44:26,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:44:26,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:44:26,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 20:44:26,919 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)] === [2024-06-21 20:44:26,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:44:26,920 INFO L85 PathProgramCache]: Analyzing trace with hash -377352479, now seen corresponding path program 8 times [2024-06-21 20:44:26,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:44:26,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035289423] [2024-06-21 20:44:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:44:26,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:44:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:44:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:44:28,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:44:28,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035289423] [2024-06-21 20:44:28,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035289423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:44:28,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:44:28,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:44:28,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494471160] [2024-06-21 20:44:28,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:44:28,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:44:28,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:44:28,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:44:28,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:44:28,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:44:28,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 617 transitions, 8950 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) [2024-06-21 20:44:28,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:44:28,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:44:28,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:44:29,096 INFO L124 PetriNetUnfolderBase]: 1224/2283 cut-off events. [2024-06-21 20:44:29,097 INFO L125 PetriNetUnfolderBase]: For 654471/654471 co-relation queries the response was YES. [2024-06-21 20:44:29,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22257 conditions, 2283 events. 1224/2283 cut-off events. For 654471/654471 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 14879 event pairs, 82 based on Foata normal form. 2/2283 useless extension candidates. Maximal degree in co-relation 22012. Up to 2008 conditions per place. [2024-06-21 20:44:29,137 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 582 selfloop transitions, 49 changer transitions 0/634 dead transitions. [2024-06-21 20:44:29,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 634 transitions, 10310 flow [2024-06-21 20:44:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:44:29,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:44:29,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 20:44:29,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 20:44:29,138 INFO L175 Difference]: Start difference. First operand has 543 places, 617 transitions, 8950 flow. Second operand 11 states and 134 transitions. [2024-06-21 20:44:29,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 634 transitions, 10310 flow [2024-06-21 20:44:32,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 634 transitions, 10162 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-21 20:44:32,553 INFO L231 Difference]: Finished difference. Result has 546 places, 618 transitions, 8966 flow [2024-06-21 20:44:32,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8802, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8966, PETRI_PLACES=546, PETRI_TRANSITIONS=618} [2024-06-21 20:44:32,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 515 predicate places. [2024-06-21 20:44:32,554 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 618 transitions, 8966 flow [2024-06-21 20:44:32,554 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) [2024-06-21 20:44:32,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:44:32,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:44:32,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 20:44:32,554 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)] === [2024-06-21 20:44:32,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:44:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash -371842229, now seen corresponding path program 9 times [2024-06-21 20:44:32,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:44:32,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766897347] [2024-06-21 20:44:32,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:44:32,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:44:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:44:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:44:33,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:44:33,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766897347] [2024-06-21 20:44:33,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766897347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:44:33,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:44:33,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:44:33,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164785406] [2024-06-21 20:44:33,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:44:33,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:44:33,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:44:33,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:44:33,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:44:33,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:44:33,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 618 transitions, 8966 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) [2024-06-21 20:44:33,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:44:33,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:44:33,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:44:34,706 INFO L124 PetriNetUnfolderBase]: 1228/2291 cut-off events. [2024-06-21 20:44:34,706 INFO L125 PetriNetUnfolderBase]: For 661858/661858 co-relation queries the response was YES. [2024-06-21 20:44:34,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22335 conditions, 2291 events. 1228/2291 cut-off events. For 661858/661858 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 14973 event pairs, 80 based on Foata normal form. 2/2291 useless extension candidates. Maximal degree in co-relation 22089. Up to 2006 conditions per place. [2024-06-21 20:44:34,760 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 576 selfloop transitions, 55 changer transitions 0/634 dead transitions. [2024-06-21 20:44:34,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 634 transitions, 10326 flow [2024-06-21 20:44:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:44:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:44:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 20:44:34,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 20:44:34,769 INFO L175 Difference]: Start difference. First operand has 546 places, 618 transitions, 8966 flow. Second operand 11 states and 136 transitions. [2024-06-21 20:44:34,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 634 transitions, 10326 flow [2024-06-21 20:44:38,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 634 transitions, 10172 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-21 20:44:38,080 INFO L231 Difference]: Finished difference. Result has 548 places, 619 transitions, 8991 flow [2024-06-21 20:44:38,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8812, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8991, PETRI_PLACES=548, PETRI_TRANSITIONS=619} [2024-06-21 20:44:38,080 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 517 predicate places. [2024-06-21 20:44:38,080 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 619 transitions, 8991 flow [2024-06-21 20:44:38,080 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) [2024-06-21 20:44:38,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:44:38,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:44:38,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 20:44:38,081 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)] === [2024-06-21 20:44:38,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:44:38,081 INFO L85 PathProgramCache]: Analyzing trace with hash -177902819, now seen corresponding path program 10 times [2024-06-21 20:44:38,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:44:38,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89547459] [2024-06-21 20:44:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:44:38,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:44:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:44:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:44:39,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:44:39,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89547459] [2024-06-21 20:44:39,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89547459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:44:39,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:44:39,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:44:39,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392367283] [2024-06-21 20:44:39,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:44:39,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:44:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:44:39,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:44:39,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:44:39,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:44:39,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 619 transitions, 8991 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) [2024-06-21 20:44:39,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:44:39,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:44:39,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:44:40,419 INFO L124 PetriNetUnfolderBase]: 1232/2299 cut-off events. [2024-06-21 20:44:40,419 INFO L125 PetriNetUnfolderBase]: For 669398/669398 co-relation queries the response was YES. [2024-06-21 20:44:40,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22426 conditions, 2299 events. 1232/2299 cut-off events. For 669398/669398 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 15091 event pairs, 71 based on Foata normal form. 2/2299 useless extension candidates. Maximal degree in co-relation 22179. Up to 1965 conditions per place. [2024-06-21 20:44:40,460 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 563 selfloop transitions, 69 changer transitions 0/635 dead transitions. [2024-06-21 20:44:40,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 635 transitions, 10355 flow [2024-06-21 20:44:40,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:44:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:44:40,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 20:44:40,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 20:44:40,461 INFO L175 Difference]: Start difference. First operand has 548 places, 619 transitions, 8991 flow. Second operand 11 states and 136 transitions. [2024-06-21 20:44:40,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 635 transitions, 10355 flow [2024-06-21 20:44:43,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 635 transitions, 10188 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-21 20:44:43,981 INFO L231 Difference]: Finished difference. Result has 550 places, 620 transitions, 9033 flow [2024-06-21 20:44:43,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8824, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9033, PETRI_PLACES=550, PETRI_TRANSITIONS=620} [2024-06-21 20:44:43,981 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 519 predicate places. [2024-06-21 20:44:43,981 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 620 transitions, 9033 flow [2024-06-21 20:44:43,981 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) [2024-06-21 20:44:43,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:44:43,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:44:43,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 20:44:43,982 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)] === [2024-06-21 20:44:43,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:44:43,982 INFO L85 PathProgramCache]: Analyzing trace with hash -177695057, now seen corresponding path program 3 times [2024-06-21 20:44:43,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:44:43,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493353805] [2024-06-21 20:44:43,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:44:43,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:44:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:44:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:44:45,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:44:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493353805] [2024-06-21 20:44:45,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493353805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:44:45,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:44:45,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:44:45,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289918188] [2024-06-21 20:44:45,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:44:45,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:44:45,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:44:45,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:44:45,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:44:45,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:44:45,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 620 transitions, 9033 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:44:45,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:44:45,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:44:45,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:44:46,965 INFO L124 PetriNetUnfolderBase]: 1248/2329 cut-off events. [2024-06-21 20:44:46,965 INFO L125 PetriNetUnfolderBase]: For 658611/658611 co-relation queries the response was YES. [2024-06-21 20:44:46,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22609 conditions, 2329 events. 1248/2329 cut-off events. For 658611/658611 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 15325 event pairs, 59 based on Foata normal form. 1/2324 useless extension candidates. Maximal degree in co-relation 22361. Up to 1998 conditions per place. [2024-06-21 20:44:47,007 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 591 selfloop transitions, 69 changer transitions 0/663 dead transitions. [2024-06-21 20:44:47,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 663 transitions, 10763 flow [2024-06-21 20:44:47,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 20:44:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 20:44:47,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-21 20:44:47,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-21 20:44:47,008 INFO L175 Difference]: Start difference. First operand has 550 places, 620 transitions, 9033 flow. Second operand 13 states and 163 transitions. [2024-06-21 20:44:47,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 663 transitions, 10763 flow [2024-06-21 20:44:50,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 663 transitions, 10548 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-21 20:44:50,498 INFO L231 Difference]: Finished difference. Result has 559 places, 635 transitions, 9281 flow [2024-06-21 20:44:50,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8836, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9281, PETRI_PLACES=559, PETRI_TRANSITIONS=635} [2024-06-21 20:44:50,499 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 528 predicate places. [2024-06-21 20:44:50,499 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 635 transitions, 9281 flow [2024-06-21 20:44:50,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:44:50,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:44:50,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:44:50,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 20:44:50,500 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)] === [2024-06-21 20:44:50,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:44:50,500 INFO L85 PathProgramCache]: Analyzing trace with hash 375063812, now seen corresponding path program 2 times [2024-06-21 20:44:50,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:44:50,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705116634] [2024-06-21 20:44:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:44:50,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:44:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:44:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:44:51,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:44:51,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705116634] [2024-06-21 20:44:51,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705116634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:44:51,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:44:51,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:44:51,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9543995] [2024-06-21 20:44:51,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:44:51,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:44:51,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:44:51,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:44:51,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:44:51,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:44:51,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 635 transitions, 9281 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:44:51,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:44:51,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:44:51,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:44:52,943 INFO L124 PetriNetUnfolderBase]: 1252/2325 cut-off events. [2024-06-21 20:44:52,944 INFO L125 PetriNetUnfolderBase]: For 681881/681881 co-relation queries the response was YES. [2024-06-21 20:44:52,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22700 conditions, 2325 events. 1252/2325 cut-off events. For 681881/681881 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 15243 event pairs, 62 based on Foata normal form. 2/2315 useless extension candidates. Maximal degree in co-relation 22446. Up to 1920 conditions per place. [2024-06-21 20:44:52,983 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 560 selfloop transitions, 90 changer transitions 0/653 dead transitions. [2024-06-21 20:44:52,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 653 transitions, 10659 flow [2024-06-21 20:44:52,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:44:52,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:44:52,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 20:44:52,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 20:44:52,984 INFO L175 Difference]: Start difference. First operand has 559 places, 635 transitions, 9281 flow. Second operand 12 states and 150 transitions. [2024-06-21 20:44:52,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 653 transitions, 10659 flow [2024-06-21 20:44:56,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 653 transitions, 10516 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-21 20:44:56,685 INFO L231 Difference]: Finished difference. Result has 569 places, 637 transitions, 9373 flow [2024-06-21 20:44:56,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9138, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9373, PETRI_PLACES=569, PETRI_TRANSITIONS=637} [2024-06-21 20:44:56,685 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 538 predicate places. [2024-06-21 20:44:56,686 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 637 transitions, 9373 flow [2024-06-21 20:44:56,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:44:56,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:44:56,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:44:56,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 20:44:56,686 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)] === [2024-06-21 20:44:56,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:44:56,686 INFO L85 PathProgramCache]: Analyzing trace with hash -450606578, now seen corresponding path program 3 times [2024-06-21 20:44:56,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:44:56,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413787959] [2024-06-21 20:44:56,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:44:56,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:44:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:44:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:44:58,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:44:58,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413787959] [2024-06-21 20:44:58,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413787959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:44:58,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:44:58,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:44:58,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266150359] [2024-06-21 20:44:58,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:44:58,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:44:58,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:44:58,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:44:58,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:44:58,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:44:58,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 637 transitions, 9373 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:44:58,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:44:58,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:44:58,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:44:59,427 INFO L124 PetriNetUnfolderBase]: 1268/2369 cut-off events. [2024-06-21 20:44:59,428 INFO L125 PetriNetUnfolderBase]: For 823647/823647 co-relation queries the response was YES. [2024-06-21 20:44:59,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23073 conditions, 2369 events. 1268/2369 cut-off events. For 823647/823647 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 15595 event pairs, 83 based on Foata normal form. 10/2375 useless extension candidates. Maximal degree in co-relation 22816. Up to 2005 conditions per place. [2024-06-21 20:44:59,471 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 585 selfloop transitions, 64 changer transitions 5/657 dead transitions. [2024-06-21 20:44:59,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 657 transitions, 10833 flow [2024-06-21 20:44:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:44:59,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:44:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-21 20:44:59,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 20:44:59,472 INFO L175 Difference]: Start difference. First operand has 569 places, 637 transitions, 9373 flow. Second operand 12 states and 152 transitions. [2024-06-21 20:44:59,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 657 transitions, 10833 flow [2024-06-21 20:45:03,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 657 transitions, 10628 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 20:45:03,210 INFO L231 Difference]: Finished difference. Result has 572 places, 636 transitions, 9300 flow [2024-06-21 20:45:03,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9168, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9300, PETRI_PLACES=572, PETRI_TRANSITIONS=636} [2024-06-21 20:45:03,210 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 541 predicate places. [2024-06-21 20:45:03,210 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 636 transitions, 9300 flow [2024-06-21 20:45:03,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:03,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:45:03,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:45:03,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 20:45:03,211 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)] === [2024-06-21 20:45:03,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:45:03,212 INFO L85 PathProgramCache]: Analyzing trace with hash -371627027, now seen corresponding path program 4 times [2024-06-21 20:45:03,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:45:03,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289563334] [2024-06-21 20:45:03,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:45:03,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:45:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:45:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:45:04,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:45:04,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289563334] [2024-06-21 20:45:04,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289563334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:45:04,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:45:04,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:45:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872180832] [2024-06-21 20:45:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:45:04,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:45:04,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:45:04,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:45:04,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:45:04,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:45:04,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 636 transitions, 9300 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:04,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:45:04,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:45:04,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:45:05,532 INFO L124 PetriNetUnfolderBase]: 1266/2371 cut-off events. [2024-06-21 20:45:05,533 INFO L125 PetriNetUnfolderBase]: For 698370/698370 co-relation queries the response was YES. [2024-06-21 20:45:05,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23086 conditions, 2371 events. 1266/2371 cut-off events. For 698370/698370 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 15672 event pairs, 81 based on Foata normal form. 2/2371 useless extension candidates. Maximal degree in co-relation 22828. Up to 2011 conditions per place. [2024-06-21 20:45:05,575 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 575 selfloop transitions, 77 changer transitions 0/655 dead transitions. [2024-06-21 20:45:05,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 655 transitions, 11190 flow [2024-06-21 20:45:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:45:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:45:05,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 20:45:05,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 20:45:05,576 INFO L175 Difference]: Start difference. First operand has 572 places, 636 transitions, 9300 flow. Second operand 11 states and 141 transitions. [2024-06-21 20:45:05,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 655 transitions, 11190 flow [2024-06-21 20:45:09,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 655 transitions, 11042 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-21 20:45:09,261 INFO L231 Difference]: Finished difference. Result has 573 places, 640 transitions, 9492 flow [2024-06-21 20:45:09,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9152, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9492, PETRI_PLACES=573, PETRI_TRANSITIONS=640} [2024-06-21 20:45:09,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 542 predicate places. [2024-06-21 20:45:09,262 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 640 transitions, 9492 flow [2024-06-21 20:45:09,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:09,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:45:09,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:45:09,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 20:45:09,263 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)] === [2024-06-21 20:45:09,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:45:09,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2702475, now seen corresponding path program 5 times [2024-06-21 20:45:09,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:45:09,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021851606] [2024-06-21 20:45:09,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:45:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:45:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:45:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:45:10,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:45:10,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021851606] [2024-06-21 20:45:10,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021851606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:45:10,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:45:10,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:45:10,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400996136] [2024-06-21 20:45:10,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:45:10,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:45:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:45:10,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:45:10,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:45:10,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:45:10,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 640 transitions, 9492 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:10,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:45:10,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:45:10,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:45:11,869 INFO L124 PetriNetUnfolderBase]: 1262/2365 cut-off events. [2024-06-21 20:45:11,869 INFO L125 PetriNetUnfolderBase]: For 670119/670119 co-relation queries the response was YES. [2024-06-21 20:45:11,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22667 conditions, 2365 events. 1262/2365 cut-off events. For 670119/670119 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 15630 event pairs, 63 based on Foata normal form. 2/2365 useless extension candidates. Maximal degree in co-relation 22408. Up to 1941 conditions per place. [2024-06-21 20:45:11,912 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 535 selfloop transitions, 117 changer transitions 0/655 dead transitions. [2024-06-21 20:45:11,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 655 transitions, 10832 flow [2024-06-21 20:45:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:45:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:45:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 20:45:11,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 20:45:11,913 INFO L175 Difference]: Start difference. First operand has 573 places, 640 transitions, 9492 flow. Second operand 12 states and 148 transitions. [2024-06-21 20:45:11,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 655 transitions, 10832 flow [2024-06-21 20:45:15,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 655 transitions, 10321 flow, removed 117 selfloop flow, removed 11 redundant places. [2024-06-21 20:45:15,308 INFO L231 Difference]: Finished difference. Result has 574 places, 640 transitions, 9223 flow [2024-06-21 20:45:15,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8981, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9223, PETRI_PLACES=574, PETRI_TRANSITIONS=640} [2024-06-21 20:45:15,308 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 543 predicate places. [2024-06-21 20:45:15,308 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 640 transitions, 9223 flow [2024-06-21 20:45:15,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:15,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:45:15,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:45:15,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 20:45:15,309 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)] === [2024-06-21 20:45:15,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:45:15,310 INFO L85 PathProgramCache]: Analyzing trace with hash -170537498, now seen corresponding path program 4 times [2024-06-21 20:45:15,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:45:15,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722997654] [2024-06-21 20:45:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:45:15,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:45:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:45:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:45:16,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:45:16,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722997654] [2024-06-21 20:45:16,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722997654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:45:16,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:45:16,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:45:16,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747455600] [2024-06-21 20:45:16,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:45:16,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:45:16,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:45:16,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:45:16,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:45:16,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:45:16,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 640 transitions, 9223 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:16,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:45:16,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:45:16,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:45:17,737 INFO L124 PetriNetUnfolderBase]: 1272/2375 cut-off events. [2024-06-21 20:45:17,737 INFO L125 PetriNetUnfolderBase]: For 665926/665926 co-relation queries the response was YES. [2024-06-21 20:45:17,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22619 conditions, 2375 events. 1272/2375 cut-off events. For 665926/665926 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 15695 event pairs, 72 based on Foata normal form. 2/2367 useless extension candidates. Maximal degree in co-relation 22360. Up to 2011 conditions per place. [2024-06-21 20:45:17,784 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 571 selfloop transitions, 86 changer transitions 0/660 dead transitions. [2024-06-21 20:45:17,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 660 transitions, 10653 flow [2024-06-21 20:45:17,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:45:17,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:45:17,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 20:45:17,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 20:45:17,785 INFO L175 Difference]: Start difference. First operand has 574 places, 640 transitions, 9223 flow. Second operand 12 states and 148 transitions. [2024-06-21 20:45:17,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 660 transitions, 10653 flow [2024-06-21 20:45:21,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 660 transitions, 10440 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 20:45:21,859 INFO L231 Difference]: Finished difference. Result has 577 places, 644 transitions, 9278 flow [2024-06-21 20:45:21,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9013, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9278, PETRI_PLACES=577, PETRI_TRANSITIONS=644} [2024-06-21 20:45:21,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 546 predicate places. [2024-06-21 20:45:21,860 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 644 transitions, 9278 flow [2024-06-21 20:45:21,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:21,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:45:21,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:45:21,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 20:45:21,861 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)] === [2024-06-21 20:45:21,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:45:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash -371634467, now seen corresponding path program 6 times [2024-06-21 20:45:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:45:21,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949109527] [2024-06-21 20:45:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:45:21,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:45:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:45:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:45:23,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:45:23,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949109527] [2024-06-21 20:45:23,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949109527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:45:23,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:45:23,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:45:23,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906728451] [2024-06-21 20:45:23,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:45:23,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:45:23,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:45:23,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:45:23,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:45:23,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:45:23,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 644 transitions, 9278 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:23,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:45:23,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:45:23,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:45:24,577 INFO L124 PetriNetUnfolderBase]: 1278/2393 cut-off events. [2024-06-21 20:45:24,577 INFO L125 PetriNetUnfolderBase]: For 674061/674061 co-relation queries the response was YES. [2024-06-21 20:45:24,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22814 conditions, 2393 events. 1278/2393 cut-off events. For 674061/674061 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 15852 event pairs, 87 based on Foata normal form. 2/2393 useless extension candidates. Maximal degree in co-relation 22554. Up to 2083 conditions per place. [2024-06-21 20:45:24,622 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 590 selfloop transitions, 70 changer transitions 0/663 dead transitions. [2024-06-21 20:45:24,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 663 transitions, 10796 flow [2024-06-21 20:45:24,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:45:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:45:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 20:45:24,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 20:45:24,623 INFO L175 Difference]: Start difference. First operand has 577 places, 644 transitions, 9278 flow. Second operand 12 states and 147 transitions. [2024-06-21 20:45:24,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 663 transitions, 10796 flow [2024-06-21 20:45:28,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 663 transitions, 10596 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 20:45:28,744 INFO L231 Difference]: Finished difference. Result has 580 places, 648 transitions, 9396 flow [2024-06-21 20:45:28,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9078, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9396, PETRI_PLACES=580, PETRI_TRANSITIONS=648} [2024-06-21 20:45:28,744 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 549 predicate places. [2024-06-21 20:45:28,744 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 648 transitions, 9396 flow [2024-06-21 20:45:28,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:28,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:45:28,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:45:28,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 20:45:28,744 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)] === [2024-06-21 20:45:28,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:45:28,745 INFO L85 PathProgramCache]: Analyzing trace with hash -371836277, now seen corresponding path program 7 times [2024-06-21 20:45:28,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:45:28,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410171236] [2024-06-21 20:45:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:45:28,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:45:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:45:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:45:30,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:45:30,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410171236] [2024-06-21 20:45:30,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410171236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:45:30,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:45:30,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:45:30,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976461837] [2024-06-21 20:45:30,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:45:30,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:45:30,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:45:30,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:45:30,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:45:30,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:45:30,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 648 transitions, 9396 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:30,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:45:30,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:45:30,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:45:31,468 INFO L124 PetriNetUnfolderBase]: 1274/2387 cut-off events. [2024-06-21 20:45:31,468 INFO L125 PetriNetUnfolderBase]: For 644119/644119 co-relation queries the response was YES. [2024-06-21 20:45:31,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22279 conditions, 2387 events. 1274/2387 cut-off events. For 644119/644119 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 15853 event pairs, 87 based on Foata normal form. 2/2387 useless extension candidates. Maximal degree in co-relation 22018. Up to 2077 conditions per place. [2024-06-21 20:45:31,513 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 591 selfloop transitions, 69 changer transitions 0/663 dead transitions. [2024-06-21 20:45:31,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 663 transitions, 10752 flow [2024-06-21 20:45:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:45:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:45:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 20:45:31,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 20:45:31,514 INFO L175 Difference]: Start difference. First operand has 580 places, 648 transitions, 9396 flow. Second operand 12 states and 148 transitions. [2024-06-21 20:45:31,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 663 transitions, 10752 flow [2024-06-21 20:45:35,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 663 transitions, 10402 flow, removed 108 selfloop flow, removed 10 redundant places. [2024-06-21 20:45:35,414 INFO L231 Difference]: Finished difference. Result has 582 places, 648 transitions, 9192 flow [2024-06-21 20:45:35,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9046, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9192, PETRI_PLACES=582, PETRI_TRANSITIONS=648} [2024-06-21 20:45:35,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 551 predicate places. [2024-06-21 20:45:35,415 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 648 transitions, 9192 flow [2024-06-21 20:45:35,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:35,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:45:35,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:45:35,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 20:45:35,415 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)] === [2024-06-21 20:45:35,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:45:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash -170268728, now seen corresponding path program 5 times [2024-06-21 20:45:35,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:45:35,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86428398] [2024-06-21 20:45:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:45:35,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:45:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:45:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:45:36,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:45:36,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86428398] [2024-06-21 20:45:36,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86428398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:45:36,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:45:36,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:45:36,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159863725] [2024-06-21 20:45:36,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:45:36,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:45:36,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:45:36,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:45:36,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:45:36,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:45:36,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 648 transitions, 9192 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:36,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:45:36,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:45:36,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:45:37,670 INFO L124 PetriNetUnfolderBase]: 1307/2443 cut-off events. [2024-06-21 20:45:37,670 INFO L125 PetriNetUnfolderBase]: For 827874/827874 co-relation queries the response was YES. [2024-06-21 20:45:37,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24513 conditions, 2443 events. 1307/2443 cut-off events. For 827874/827874 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 16152 event pairs, 84 based on Foata normal form. 2/2432 useless extension candidates. Maximal degree in co-relation 24251. Up to 1880 conditions per place. [2024-06-21 20:45:37,714 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 574 selfloop transitions, 93 changer transitions 1/671 dead transitions. [2024-06-21 20:45:37,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 671 transitions, 11152 flow [2024-06-21 20:45:37,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:45:37,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:45:37,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 20:45:37,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 20:45:37,715 INFO L175 Difference]: Start difference. First operand has 582 places, 648 transitions, 9192 flow. Second operand 11 states and 145 transitions. [2024-06-21 20:45:37,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 671 transitions, 11152 flow [2024-06-21 20:45:42,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 671 transitions, 10975 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-21 20:45:42,714 INFO L231 Difference]: Finished difference. Result has 582 places, 650 transitions, 9283 flow [2024-06-21 20:45:42,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9015, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9283, PETRI_PLACES=582, PETRI_TRANSITIONS=650} [2024-06-21 20:45:42,714 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 551 predicate places. [2024-06-21 20:45:42,714 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 650 transitions, 9283 flow [2024-06-21 20:45:42,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:42,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:45:42,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:45:42,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 20:45:42,715 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)] === [2024-06-21 20:45:42,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:45:42,715 INFO L85 PathProgramCache]: Analyzing trace with hash 382473122, now seen corresponding path program 6 times [2024-06-21 20:45:42,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:45:42,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115621892] [2024-06-21 20:45:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:45:42,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:45:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:45:43,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:45:43,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:45:43,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115621892] [2024-06-21 20:45:43,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115621892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:45:43,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:45:43,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:45:43,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407364258] [2024-06-21 20:45:43,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:45:43,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:45:43,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:45:43,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:45:43,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:45:44,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:45:44,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 650 transitions, 9283 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:44,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:45:44,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:45:44,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:45:44,961 INFO L124 PetriNetUnfolderBase]: 1304/2438 cut-off events. [2024-06-21 20:45:44,961 INFO L125 PetriNetUnfolderBase]: For 799083/799083 co-relation queries the response was YES. [2024-06-21 20:45:44,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24188 conditions, 2438 events. 1304/2438 cut-off events. For 799083/799083 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 16115 event pairs, 85 based on Foata normal form. 2/2427 useless extension candidates. Maximal degree in co-relation 23925. Up to 2022 conditions per place. [2024-06-21 20:45:45,007 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 568 selfloop transitions, 94 changer transitions 0/665 dead transitions. [2024-06-21 20:45:45,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 665 transitions, 10643 flow [2024-06-21 20:45:45,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:45:45,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:45:45,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 20:45:45,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 20:45:45,008 INFO L175 Difference]: Start difference. First operand has 582 places, 650 transitions, 9283 flow. Second operand 11 states and 140 transitions. [2024-06-21 20:45:45,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 665 transitions, 10643 flow [2024-06-21 20:45:49,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 665 transitions, 10484 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 20:45:49,994 INFO L231 Difference]: Finished difference. Result has 586 places, 650 transitions, 9320 flow [2024-06-21 20:45:49,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9124, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9320, PETRI_PLACES=586, PETRI_TRANSITIONS=650} [2024-06-21 20:45:49,994 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 555 predicate places. [2024-06-21 20:45:49,995 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 650 transitions, 9320 flow [2024-06-21 20:45:49,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:49,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:45:49,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:45:49,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 20:45:49,995 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)] === [2024-06-21 20:45:49,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:45:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash -177896867, now seen corresponding path program 8 times [2024-06-21 20:45:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:45:49,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989588605] [2024-06-21 20:45:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:45:49,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:45:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:45:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:45:51,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:45:51,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989588605] [2024-06-21 20:45:51,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989588605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:45:51,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:45:51,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:45:51,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736409570] [2024-06-21 20:45:51,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:45:51,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:45:51,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:45:51,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:45:51,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:45:51,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:45:51,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 650 transitions, 9320 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:51,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:45:51,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:45:51,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:45:52,608 INFO L124 PetriNetUnfolderBase]: 1305/2451 cut-off events. [2024-06-21 20:45:52,608 INFO L125 PetriNetUnfolderBase]: For 788336/788336 co-relation queries the response was YES. [2024-06-21 20:45:52,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24176 conditions, 2451 events. 1305/2451 cut-off events. For 788336/788336 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 16262 event pairs, 76 based on Foata normal form. 2/2451 useless extension candidates. Maximal degree in co-relation 23911. Up to 1909 conditions per place. [2024-06-21 20:45:52,656 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 518 selfloop transitions, 146 changer transitions 0/667 dead transitions. [2024-06-21 20:45:52,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 667 transitions, 11154 flow [2024-06-21 20:45:52,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:45:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:45:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 20:45:52,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 20:45:52,657 INFO L175 Difference]: Start difference. First operand has 586 places, 650 transitions, 9320 flow. Second operand 11 states and 144 transitions. [2024-06-21 20:45:52,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 667 transitions, 11154 flow [2024-06-21 20:45:57,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 667 transitions, 10915 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-21 20:45:57,453 INFO L231 Difference]: Finished difference. Result has 587 places, 652 transitions, 9465 flow [2024-06-21 20:45:57,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9081, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9465, PETRI_PLACES=587, PETRI_TRANSITIONS=652} [2024-06-21 20:45:57,453 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 556 predicate places. [2024-06-21 20:45:57,453 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 652 transitions, 9465 flow [2024-06-21 20:45:57,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:45:57,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:45:57,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:45:57,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 20:45:57,454 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)] === [2024-06-21 20:45:57,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:45:57,454 INFO L85 PathProgramCache]: Analyzing trace with hash -31414197, now seen corresponding path program 11 times [2024-06-21 20:45:57,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:45:57,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245388996] [2024-06-21 20:45:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:45:57,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:45:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:45:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:45:58,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:45:58,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245388996] [2024-06-21 20:45:58,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245388996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:45:58,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:45:58,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:45:58,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601438505] [2024-06-21 20:45:58,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:45:58,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:45:58,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:45:58,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:45:58,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:45:58,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:45:58,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 652 transitions, 9465 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) [2024-06-21 20:45:58,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:45:58,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:45:58,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:45:59,404 INFO L124 PetriNetUnfolderBase]: 1309/2460 cut-off events. [2024-06-21 20:45:59,404 INFO L125 PetriNetUnfolderBase]: For 798615/798615 co-relation queries the response was YES. [2024-06-21 20:45:59,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24353 conditions, 2460 events. 1309/2460 cut-off events. For 798615/798615 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 16327 event pairs, 77 based on Foata normal form. 2/2460 useless extension candidates. Maximal degree in co-relation 24087. Up to 2038 conditions per place. [2024-06-21 20:45:59,450 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 565 selfloop transitions, 98 changer transitions 0/666 dead transitions. [2024-06-21 20:45:59,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 666 transitions, 10887 flow [2024-06-21 20:45:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:45:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:45:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 20:45:59,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 20:45:59,465 INFO L175 Difference]: Start difference. First operand has 587 places, 652 transitions, 9465 flow. Second operand 11 states and 136 transitions. [2024-06-21 20:45:59,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 666 transitions, 10887 flow [2024-06-21 20:46:04,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 666 transitions, 10514 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-21 20:46:04,727 INFO L231 Difference]: Finished difference. Result has 590 places, 653 transitions, 9361 flow [2024-06-21 20:46:04,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9092, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9361, PETRI_PLACES=590, PETRI_TRANSITIONS=653} [2024-06-21 20:46:04,728 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 559 predicate places. [2024-06-21 20:46:04,728 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 653 transitions, 9361 flow [2024-06-21 20:46:04,728 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) [2024-06-21 20:46:04,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:46:04,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:46:04,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 20:46:04,728 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)] === [2024-06-21 20:46:04,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:46:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1493584745, now seen corresponding path program 12 times [2024-06-21 20:46:04,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:46:04,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194154333] [2024-06-21 20:46:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:46:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:46:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:46:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:46:05,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:46:05,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194154333] [2024-06-21 20:46:05,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194154333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:46:05,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:46:05,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:46:05,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297293339] [2024-06-21 20:46:05,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:46:05,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:46:05,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:46:05,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:46:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:46:05,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:46:05,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 653 transitions, 9361 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) [2024-06-21 20:46:05,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:46:05,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:46:05,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:46:06,885 INFO L124 PetriNetUnfolderBase]: 1313/2466 cut-off events. [2024-06-21 20:46:06,885 INFO L125 PetriNetUnfolderBase]: For 806674/806674 co-relation queries the response was YES. [2024-06-21 20:46:06,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24371 conditions, 2466 events. 1313/2466 cut-off events. For 806674/806674 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 16368 event pairs, 77 based on Foata normal form. 2/2466 useless extension candidates. Maximal degree in co-relation 24104. Up to 2155 conditions per place. [2024-06-21 20:46:06,931 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 602 selfloop transitions, 62 changer transitions 0/667 dead transitions. [2024-06-21 20:46:06,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 667 transitions, 10787 flow [2024-06-21 20:46:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:46:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:46:06,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 20:46:06,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 20:46:06,931 INFO L175 Difference]: Start difference. First operand has 590 places, 653 transitions, 9361 flow. Second operand 11 states and 135 transitions. [2024-06-21 20:46:06,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 667 transitions, 10787 flow [2024-06-21 20:46:11,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 667 transitions, 10530 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-21 20:46:11,879 INFO L231 Difference]: Finished difference. Result has 592 places, 654 transitions, 9303 flow [2024-06-21 20:46:11,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9104, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9303, PETRI_PLACES=592, PETRI_TRANSITIONS=654} [2024-06-21 20:46:11,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 561 predicate places. [2024-06-21 20:46:11,880 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 654 transitions, 9303 flow [2024-06-21 20:46:11,880 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) [2024-06-21 20:46:11,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:46:11,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:46:11,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 20:46:11,880 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)] === [2024-06-21 20:46:11,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:46:11,881 INFO L85 PathProgramCache]: Analyzing trace with hash -904222777, now seen corresponding path program 13 times [2024-06-21 20:46:11,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:46:11,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541417322] [2024-06-21 20:46:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:46:11,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:46:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:46:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:46:12,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:46:12,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541417322] [2024-06-21 20:46:12,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541417322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:46:12,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:46:12,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:46:12,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007811371] [2024-06-21 20:46:12,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:46:12,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:46:12,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:46:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:46:12,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:46:13,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:46:13,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 654 transitions, 9303 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) [2024-06-21 20:46:13,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:46:13,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:46:13,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:46:13,992 INFO L124 PetriNetUnfolderBase]: 1317/2474 cut-off events. [2024-06-21 20:46:13,992 INFO L125 PetriNetUnfolderBase]: For 814836/814836 co-relation queries the response was YES. [2024-06-21 20:46:14,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24355 conditions, 2474 events. 1317/2474 cut-off events. For 814836/814836 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 16462 event pairs, 77 based on Foata normal form. 2/2474 useless extension candidates. Maximal degree in co-relation 24087. Up to 2175 conditions per place. [2024-06-21 20:46:14,034 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 607 selfloop transitions, 59 changer transitions 0/669 dead transitions. [2024-06-21 20:46:14,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 669 transitions, 10745 flow [2024-06-21 20:46:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:46:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:46:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 20:46:14,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 20:46:14,035 INFO L175 Difference]: Start difference. First operand has 592 places, 654 transitions, 9303 flow. Second operand 11 states and 133 transitions. [2024-06-21 20:46:14,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 669 transitions, 10745 flow [2024-06-21 20:46:18,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 669 transitions, 10556 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-21 20:46:18,816 INFO L231 Difference]: Finished difference. Result has 595 places, 656 transitions, 9326 flow [2024-06-21 20:46:18,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9116, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9326, PETRI_PLACES=595, PETRI_TRANSITIONS=656} [2024-06-21 20:46:18,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 564 predicate places. [2024-06-21 20:46:18,817 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 656 transitions, 9326 flow [2024-06-21 20:46:18,817 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) [2024-06-21 20:46:18,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:46:18,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:46:18,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-21 20:46:18,817 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)] === [2024-06-21 20:46:18,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:46:18,817 INFO L85 PathProgramCache]: Analyzing trace with hash -704776837, now seen corresponding path program 14 times [2024-06-21 20:46:18,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:46:18,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234269667] [2024-06-21 20:46:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:46:18,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:46:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:46:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:46:20,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:46:20,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234269667] [2024-06-21 20:46:20,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234269667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:46:20,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:46:20,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:46:20,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361327918] [2024-06-21 20:46:20,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:46:20,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:46:20,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:46:20,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:46:20,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:46:20,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:46:20,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 656 transitions, 9326 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) [2024-06-21 20:46:20,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:46:20,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:46:20,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:46:21,264 INFO L124 PetriNetUnfolderBase]: 1321/2482 cut-off events. [2024-06-21 20:46:21,264 INFO L125 PetriNetUnfolderBase]: For 822983/822983 co-relation queries the response was YES. [2024-06-21 20:46:21,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24434 conditions, 2482 events. 1321/2482 cut-off events. For 822983/822983 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 16509 event pairs, 79 based on Foata normal form. 2/2482 useless extension candidates. Maximal degree in co-relation 24164. Up to 2153 conditions per place. [2024-06-21 20:46:21,312 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 600 selfloop transitions, 67 changer transitions 0/670 dead transitions. [2024-06-21 20:46:21,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 670 transitions, 10762 flow [2024-06-21 20:46:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:46:21,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:46:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 20:46:21,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 20:46:21,313 INFO L175 Difference]: Start difference. First operand has 595 places, 656 transitions, 9326 flow. Second operand 11 states and 137 transitions. [2024-06-21 20:46:21,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 670 transitions, 10762 flow [2024-06-21 20:46:26,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 670 transitions, 10584 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-21 20:46:26,878 INFO L231 Difference]: Finished difference. Result has 598 places, 657 transitions, 9361 flow [2024-06-21 20:46:26,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9148, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9361, PETRI_PLACES=598, PETRI_TRANSITIONS=657} [2024-06-21 20:46:26,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 567 predicate places. [2024-06-21 20:46:26,878 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 657 transitions, 9361 flow [2024-06-21 20:46:26,878 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) [2024-06-21 20:46:26,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:46:26,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:46:26,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-21 20:46:26,879 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)] === [2024-06-21 20:46:26,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:46:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2040825645, now seen corresponding path program 15 times [2024-06-21 20:46:26,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:46:26,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630772877] [2024-06-21 20:46:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:46:26,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:46:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:46:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:46:28,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:46:28,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630772877] [2024-06-21 20:46:28,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630772877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:46:28,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:46:28,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:46:28,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068403728] [2024-06-21 20:46:28,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:46:28,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:46:28,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:46:28,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:46:28,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:46:28,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:46:28,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 657 transitions, 9361 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) [2024-06-21 20:46:28,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:46:28,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:46:28,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:46:29,165 INFO L124 PetriNetUnfolderBase]: 1325/2492 cut-off events. [2024-06-21 20:46:29,165 INFO L125 PetriNetUnfolderBase]: For 831700/831700 co-relation queries the response was YES. [2024-06-21 20:46:29,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24546 conditions, 2492 events. 1325/2492 cut-off events. For 831700/831700 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 16623 event pairs, 77 based on Foata normal form. 2/2492 useless extension candidates. Maximal degree in co-relation 24275. Up to 2189 conditions per place. [2024-06-21 20:46:29,207 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 612 selfloop transitions, 57 changer transitions 0/672 dead transitions. [2024-06-21 20:46:29,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 672 transitions, 10805 flow [2024-06-21 20:46:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:46:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:46:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 20:46:29,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 20:46:29,208 INFO L175 Difference]: Start difference. First operand has 598 places, 657 transitions, 9361 flow. Second operand 11 states and 133 transitions. [2024-06-21 20:46:29,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 672 transitions, 10805 flow [2024-06-21 20:46:34,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 672 transitions, 10604 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-21 20:46:34,335 INFO L231 Difference]: Finished difference. Result has 600 places, 658 transitions, 9354 flow [2024-06-21 20:46:34,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9160, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9354, PETRI_PLACES=600, PETRI_TRANSITIONS=658} [2024-06-21 20:46:34,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 569 predicate places. [2024-06-21 20:46:34,336 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 658 transitions, 9354 flow [2024-06-21 20:46:34,336 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) [2024-06-21 20:46:34,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:46:34,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:46:34,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-21 20:46:34,336 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)] === [2024-06-21 20:46:34,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:46:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2046551097, now seen corresponding path program 9 times [2024-06-21 20:46:34,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:46:34,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611605308] [2024-06-21 20:46:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:46:34,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:46:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:46:35,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:46:35,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:46:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611605308] [2024-06-21 20:46:35,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611605308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:46:35,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:46:35,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:46:35,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904254178] [2024-06-21 20:46:35,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:46:35,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:46:35,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:46:35,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:46:35,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:46:35,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:46:35,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 658 transitions, 9354 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:46:35,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:46:35,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:46:35,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:46:36,666 INFO L124 PetriNetUnfolderBase]: 1341/2520 cut-off events. [2024-06-21 20:46:36,667 INFO L125 PetriNetUnfolderBase]: For 881162/881162 co-relation queries the response was YES. [2024-06-21 20:46:36,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25302 conditions, 2520 events. 1341/2520 cut-off events. For 881162/881162 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 16847 event pairs, 79 based on Foata normal form. 2/2520 useless extension candidates. Maximal degree in co-relation 25030. Up to 2159 conditions per place. [2024-06-21 20:46:36,715 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 591 selfloop transitions, 87 changer transitions 0/681 dead transitions. [2024-06-21 20:46:36,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 681 transitions, 11500 flow [2024-06-21 20:46:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 20:46:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 20:46:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-21 20:46:36,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798076923076923 [2024-06-21 20:46:36,716 INFO L175 Difference]: Start difference. First operand has 600 places, 658 transitions, 9354 flow. Second operand 13 states and 158 transitions. [2024-06-21 20:46:36,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 681 transitions, 11500 flow [2024-06-21 20:46:42,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 681 transitions, 11316 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-21 20:46:42,047 INFO L231 Difference]: Finished difference. Result has 604 places, 666 transitions, 9715 flow [2024-06-21 20:46:42,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9170, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9715, PETRI_PLACES=604, PETRI_TRANSITIONS=666} [2024-06-21 20:46:42,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 573 predicate places. [2024-06-21 20:46:42,047 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 666 transitions, 9715 flow [2024-06-21 20:46:42,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:46:42,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:46:42,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:46:42,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-21 20:46:42,047 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)] === [2024-06-21 20:46:42,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:46:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2046551376, now seen corresponding path program 7 times [2024-06-21 20:46:42,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:46:42,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505819657] [2024-06-21 20:46:42,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:46:42,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:46:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:46:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:46:43,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:46:43,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505819657] [2024-06-21 20:46:43,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505819657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:46:43,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:46:43,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:46:43,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470543281] [2024-06-21 20:46:43,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:46:43,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:46:43,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:46:43,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:46:43,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:46:43,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:46:43,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 666 transitions, 9715 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:46:43,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:46:43,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:46:43,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:46:44,212 INFO L124 PetriNetUnfolderBase]: 1361/2564 cut-off events. [2024-06-21 20:46:44,212 INFO L125 PetriNetUnfolderBase]: For 1085707/1085707 co-relation queries the response was YES. [2024-06-21 20:46:44,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25696 conditions, 2564 events. 1361/2564 cut-off events. For 1085707/1085707 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 17220 event pairs, 83 based on Foata normal form. 12/2574 useless extension candidates. Maximal degree in co-relation 25423. Up to 2183 conditions per place. [2024-06-21 20:46:44,262 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 609 selfloop transitions, 63 changer transitions 9/684 dead transitions. [2024-06-21 20:46:44,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 684 transitions, 11271 flow [2024-06-21 20:46:44,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:46:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:46:44,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 20:46:44,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 20:46:44,262 INFO L175 Difference]: Start difference. First operand has 604 places, 666 transitions, 9715 flow. Second operand 11 states and 141 transitions. [2024-06-21 20:46:44,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 684 transitions, 11271 flow [2024-06-21 20:46:50,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 684 transitions, 11005 flow, removed 84 selfloop flow, removed 9 redundant places. [2024-06-21 20:46:50,327 INFO L231 Difference]: Finished difference. Result has 606 places, 662 transitions, 9537 flow [2024-06-21 20:46:50,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9449, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9537, PETRI_PLACES=606, PETRI_TRANSITIONS=662} [2024-06-21 20:46:50,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 575 predicate places. [2024-06-21 20:46:50,327 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 662 transitions, 9537 flow [2024-06-21 20:46:50,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:46:50,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:46:50,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:46:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-21 20:46:50,327 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)] === [2024-06-21 20:46:50,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:46:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1493792507, now seen corresponding path program 10 times [2024-06-21 20:46:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:46:50,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189586239] [2024-06-21 20:46:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:46:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:46:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:46:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:46:52,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:46:52,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189586239] [2024-06-21 20:46:52,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189586239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:46:52,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:46:52,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:46:52,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100288808] [2024-06-21 20:46:52,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:46:52,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:46:52,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:46:52,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:46:52,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:46:52,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:46:52,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 662 transitions, 9537 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:46:52,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:46:52,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:46:52,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:46:53,201 INFO L124 PetriNetUnfolderBase]: 1335/2514 cut-off events. [2024-06-21 20:46:53,201 INFO L125 PetriNetUnfolderBase]: For 895743/895743 co-relation queries the response was YES. [2024-06-21 20:46:53,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25297 conditions, 2514 events. 1335/2514 cut-off events. For 895743/895743 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 16822 event pairs, 79 based on Foata normal form. 2/2514 useless extension candidates. Maximal degree in co-relation 25022. Up to 2183 conditions per place. [2024-06-21 20:46:53,250 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 601 selfloop transitions, 75 changer transitions 0/679 dead transitions. [2024-06-21 20:46:53,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 679 transitions, 11077 flow [2024-06-21 20:46:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:46:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:46:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-21 20:46:53,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-21 20:46:53,251 INFO L175 Difference]: Start difference. First operand has 606 places, 662 transitions, 9537 flow. Second operand 12 states and 146 transitions. [2024-06-21 20:46:53,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 679 transitions, 11077 flow [2024-06-21 20:46:59,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 679 transitions, 10916 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 20:46:59,262 INFO L231 Difference]: Finished difference. Result has 609 places, 666 transitions, 9700 flow [2024-06-21 20:46:59,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9376, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9700, PETRI_PLACES=609, PETRI_TRANSITIONS=666} [2024-06-21 20:46:59,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 578 predicate places. [2024-06-21 20:46:59,263 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 666 transitions, 9700 flow [2024-06-21 20:46:59,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:46:59,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:46:59,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:46:59,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-21 20:46:59,263 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)] === [2024-06-21 20:46:59,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:46:59,263 INFO L85 PathProgramCache]: Analyzing trace with hash 225301794, now seen corresponding path program 8 times [2024-06-21 20:46:59,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:46:59,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112498700] [2024-06-21 20:46:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:46:59,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:46:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:47:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:47:00,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:47:00,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112498700] [2024-06-21 20:47:00,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112498700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:47:00,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:47:00,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:47:00,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601960692] [2024-06-21 20:47:00,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:47:00,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:47:00,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:47:00,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:47:00,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:47:01,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:47:01,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 666 transitions, 9700 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:01,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:47:01,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:47:01,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:47:02,104 INFO L124 PetriNetUnfolderBase]: 1345/2531 cut-off events. [2024-06-21 20:47:02,104 INFO L125 PetriNetUnfolderBase]: For 904957/904957 co-relation queries the response was YES. [2024-06-21 20:47:02,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25468 conditions, 2531 events. 1345/2531 cut-off events. For 904957/904957 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 16939 event pairs, 79 based on Foata normal form. 2/2531 useless extension candidates. Maximal degree in co-relation 25192. Up to 1993 conditions per place. [2024-06-21 20:47:02,149 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 542 selfloop transitions, 143 changer transitions 0/688 dead transitions. [2024-06-21 20:47:02,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 688 transitions, 11254 flow [2024-06-21 20:47:02,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:47:02,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:47:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 20:47:02,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 20:47:02,150 INFO L175 Difference]: Start difference. First operand has 609 places, 666 transitions, 9700 flow. Second operand 12 states and 150 transitions. [2024-06-21 20:47:02,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 688 transitions, 11254 flow [2024-06-21 20:47:08,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 688 transitions, 10998 flow, removed 56 selfloop flow, removed 10 redundant places. [2024-06-21 20:47:08,043 INFO L231 Difference]: Finished difference. Result has 613 places, 674 transitions, 9968 flow [2024-06-21 20:47:08,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9444, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9968, PETRI_PLACES=613, PETRI_TRANSITIONS=674} [2024-06-21 20:47:08,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 582 predicate places. [2024-06-21 20:47:08,043 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 674 transitions, 9968 flow [2024-06-21 20:47:08,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:08,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:47:08,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:47:08,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-21 20:47:08,044 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)] === [2024-06-21 20:47:08,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:47:08,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1493590697, now seen corresponding path program 11 times [2024-06-21 20:47:08,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:47:08,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49975202] [2024-06-21 20:47:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:47:08,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:47:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:47:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:47:09,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:47:09,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49975202] [2024-06-21 20:47:09,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49975202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:47:09,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:47:09,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:47:09,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112317380] [2024-06-21 20:47:09,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:47:09,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:47:09,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:47:09,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:47:09,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:47:09,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:47:09,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 674 transitions, 9968 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:09,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:47:09,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:47:09,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:47:11,100 INFO L124 PetriNetUnfolderBase]: 1341/2526 cut-off events. [2024-06-21 20:47:11,100 INFO L125 PetriNetUnfolderBase]: For 870841/870841 co-relation queries the response was YES. [2024-06-21 20:47:11,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25255 conditions, 2526 events. 1341/2526 cut-off events. For 870841/870841 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 16913 event pairs, 81 based on Foata normal form. 2/2526 useless extension candidates. Maximal degree in co-relation 24976. Up to 2195 conditions per place. [2024-06-21 20:47:11,149 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 609 selfloop transitions, 75 changer transitions 0/687 dead transitions. [2024-06-21 20:47:11,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 687 transitions, 11366 flow [2024-06-21 20:47:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:47:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:47:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 20:47:11,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 20:47:11,150 INFO L175 Difference]: Start difference. First operand has 613 places, 674 transitions, 9968 flow. Second operand 12 states and 147 transitions. [2024-06-21 20:47:11,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 687 transitions, 11366 flow [2024-06-21 20:47:16,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 687 transitions, 10991 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-06-21 20:47:16,700 INFO L231 Difference]: Finished difference. Result has 618 places, 674 transitions, 9751 flow [2024-06-21 20:47:16,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9593, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9751, PETRI_PLACES=618, PETRI_TRANSITIONS=674} [2024-06-21 20:47:16,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 587 predicate places. [2024-06-21 20:47:16,700 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 674 transitions, 9751 flow [2024-06-21 20:47:16,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:16,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:47:16,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:47:16,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-21 20:47:16,701 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)] === [2024-06-21 20:47:16,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:47:16,701 INFO L85 PathProgramCache]: Analyzing trace with hash 146590734, now seen corresponding path program 9 times [2024-06-21 20:47:16,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:47:16,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045989868] [2024-06-21 20:47:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:47:16,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:47:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:47:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:47:18,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:47:18,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045989868] [2024-06-21 20:47:18,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045989868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:47:18,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:47:18,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:47:18,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209866366] [2024-06-21 20:47:18,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:47:18,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:47:18,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:47:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:47:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:47:18,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:47:18,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 674 transitions, 9751 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:18,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:47:18,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:47:18,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:47:19,147 INFO L124 PetriNetUnfolderBase]: 1358/2558 cut-off events. [2024-06-21 20:47:19,147 INFO L125 PetriNetUnfolderBase]: For 920630/920630 co-relation queries the response was YES. [2024-06-21 20:47:19,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25708 conditions, 2558 events. 1358/2558 cut-off events. For 920630/920630 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 17223 event pairs, 80 based on Foata normal form. 2/2558 useless extension candidates. Maximal degree in co-relation 25428. Up to 1979 conditions per place. [2024-06-21 20:47:19,195 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 543 selfloop transitions, 149 changer transitions 0/695 dead transitions. [2024-06-21 20:47:19,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 695 transitions, 11711 flow [2024-06-21 20:47:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:47:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:47:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 20:47:19,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 20:47:19,196 INFO L175 Difference]: Start difference. First operand has 618 places, 674 transitions, 9751 flow. Second operand 12 states and 154 transitions. [2024-06-21 20:47:19,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 695 transitions, 11711 flow [2024-06-21 20:47:25,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 695 transitions, 11534 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 20:47:25,095 INFO L231 Difference]: Finished difference. Result has 620 places, 679 transitions, 10026 flow [2024-06-21 20:47:25,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9574, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10026, PETRI_PLACES=620, PETRI_TRANSITIONS=679} [2024-06-21 20:47:25,095 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 589 predicate places. [2024-06-21 20:47:25,096 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 679 transitions, 10026 flow [2024-06-21 20:47:25,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:25,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:47:25,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:47:25,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-21 20:47:25,096 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)] === [2024-06-21 20:47:25,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:47:25,096 INFO L85 PathProgramCache]: Analyzing trace with hash 515219183, now seen corresponding path program 12 times [2024-06-21 20:47:25,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:47:25,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788970869] [2024-06-21 20:47:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:47:25,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:47:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:47:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:47:26,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:47:26,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788970869] [2024-06-21 20:47:26,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788970869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:47:26,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:47:26,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:47:26,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180954838] [2024-06-21 20:47:26,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:47:26,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:47:26,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:47:26,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:47:26,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:47:26,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:47:26,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 679 transitions, 10026 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:26,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:47:26,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:47:26,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:47:28,019 INFO L124 PetriNetUnfolderBase]: 1367/2576 cut-off events. [2024-06-21 20:47:28,019 INFO L125 PetriNetUnfolderBase]: For 952981/952981 co-relation queries the response was YES. [2024-06-21 20:47:28,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26224 conditions, 2576 events. 1367/2576 cut-off events. For 952981/952981 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 17372 event pairs, 82 based on Foata normal form. 3/2577 useless extension candidates. Maximal degree in co-relation 25942. Up to 1639 conditions per place. [2024-06-21 20:47:28,063 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 438 selfloop transitions, 261 changer transitions 0/702 dead transitions. [2024-06-21 20:47:28,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 702 transitions, 12938 flow [2024-06-21 20:47:28,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:47:28,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:47:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-21 20:47:28,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 20:47:28,064 INFO L175 Difference]: Start difference. First operand has 620 places, 679 transitions, 10026 flow. Second operand 12 states and 160 transitions. [2024-06-21 20:47:28,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 702 transitions, 12938 flow [2024-06-21 20:47:34,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 702 transitions, 12684 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-21 20:47:34,507 INFO L231 Difference]: Finished difference. Result has 626 places, 685 transitions, 10547 flow [2024-06-21 20:47:34,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9773, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10547, PETRI_PLACES=626, PETRI_TRANSITIONS=685} [2024-06-21 20:47:34,508 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 595 predicate places. [2024-06-21 20:47:34,508 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 685 transitions, 10547 flow [2024-06-21 20:47:34,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:34,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:47:34,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:47:34,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-21 20:47:34,508 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)] === [2024-06-21 20:47:34,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:47:34,508 INFO L85 PathProgramCache]: Analyzing trace with hash -31198716, now seen corresponding path program 10 times [2024-06-21 20:47:34,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:47:34,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663056844] [2024-06-21 20:47:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:47:34,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:47:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:47:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:47:35,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:47:35,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663056844] [2024-06-21 20:47:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663056844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:47:35,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:47:35,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:47:35,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628815343] [2024-06-21 20:47:35,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:47:35,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:47:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:47:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:47:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:47:36,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:47:36,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 685 transitions, 10547 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:36,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:47:36,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:47:36,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:47:37,062 INFO L124 PetriNetUnfolderBase]: 1371/2584 cut-off events. [2024-06-21 20:47:37,062 INFO L125 PetriNetUnfolderBase]: For 951690/951690 co-relation queries the response was YES. [2024-06-21 20:47:37,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26731 conditions, 2584 events. 1371/2584 cut-off events. For 951690/951690 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 17489 event pairs, 84 based on Foata normal form. 2/2584 useless extension candidates. Maximal degree in co-relation 26446. Up to 1944 conditions per place. [2024-06-21 20:47:37,118 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 542 selfloop transitions, 155 changer transitions 0/700 dead transitions. [2024-06-21 20:47:37,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 700 transitions, 12028 flow [2024-06-21 20:47:37,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:47:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:47:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 20:47:37,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 20:47:37,119 INFO L175 Difference]: Start difference. First operand has 626 places, 685 transitions, 10547 flow. Second operand 11 states and 143 transitions. [2024-06-21 20:47:37,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 700 transitions, 12028 flow [2024-06-21 20:47:43,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 700 transitions, 11326 flow, removed 88 selfloop flow, removed 11 redundant places. [2024-06-21 20:47:43,290 INFO L231 Difference]: Finished difference. Result has 626 places, 686 transitions, 10208 flow [2024-06-21 20:47:43,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9845, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10208, PETRI_PLACES=626, PETRI_TRANSITIONS=686} [2024-06-21 20:47:43,290 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 595 predicate places. [2024-06-21 20:47:43,290 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 686 transitions, 10208 flow [2024-06-21 20:47:43,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:43,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:47:43,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:47:43,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-21 20:47:43,291 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)] === [2024-06-21 20:47:43,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:47:43,291 INFO L85 PathProgramCache]: Analyzing trace with hash 234824994, now seen corresponding path program 11 times [2024-06-21 20:47:43,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:47:43,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196957527] [2024-06-21 20:47:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:47:43,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:47:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:47:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:47:45,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:47:45,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196957527] [2024-06-21 20:47:45,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196957527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:47:45,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:47:45,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:47:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69841077] [2024-06-21 20:47:45,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:47:45,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:47:45,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:47:45,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:47:45,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:47:45,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:47:45,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 686 transitions, 10208 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:45,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:47:45,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:47:45,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:47:46,376 INFO L124 PetriNetUnfolderBase]: 1404/2650 cut-off events. [2024-06-21 20:47:46,376 INFO L125 PetriNetUnfolderBase]: For 1148418/1148418 co-relation queries the response was YES. [2024-06-21 20:47:46,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29004 conditions, 2650 events. 1404/2650 cut-off events. For 1148418/1148418 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 17951 event pairs, 97 based on Foata normal form. 2/2650 useless extension candidates. Maximal degree in co-relation 28720. Up to 1682 conditions per place. [2024-06-21 20:47:46,423 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 497 selfloop transitions, 208 changer transitions 0/708 dead transitions. [2024-06-21 20:47:46,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 708 transitions, 12246 flow [2024-06-21 20:47:46,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:47:46,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:47:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-21 20:47:46,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-21 20:47:46,424 INFO L175 Difference]: Start difference. First operand has 626 places, 686 transitions, 10208 flow. Second operand 12 states and 159 transitions. [2024-06-21 20:47:46,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 708 transitions, 12246 flow [2024-06-21 20:47:54,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 708 transitions, 11895 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 20:47:54,770 INFO L231 Difference]: Finished difference. Result has 629 places, 688 transitions, 10375 flow [2024-06-21 20:47:54,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9857, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10375, PETRI_PLACES=629, PETRI_TRANSITIONS=688} [2024-06-21 20:47:54,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 598 predicate places. [2024-06-21 20:47:54,770 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 688 transitions, 10375 flow [2024-06-21 20:47:54,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:54,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:47:54,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:47:54,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-21 20:47:54,770 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)] === [2024-06-21 20:47:54,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:47:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1878886198, now seen corresponding path program 12 times [2024-06-21 20:47:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:47:54,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291884952] [2024-06-21 20:47:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:47:54,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:47:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:47:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:47:55,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:47:55,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291884952] [2024-06-21 20:47:55,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291884952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:47:55,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:47:55,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:47:55,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326688138] [2024-06-21 20:47:55,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:47:55,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:47:55,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:47:55,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:47:55,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:47:55,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:47:55,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 688 transitions, 10375 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:47:55,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:47:55,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:47:55,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:47:56,852 INFO L124 PetriNetUnfolderBase]: 1415/2670 cut-off events. [2024-06-21 20:47:56,852 INFO L125 PetriNetUnfolderBase]: For 1203358/1203358 co-relation queries the response was YES. [2024-06-21 20:47:56,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29845 conditions, 2670 events. 1415/2670 cut-off events. For 1203358/1203358 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 18126 event pairs, 100 based on Foata normal form. 2/2670 useless extension candidates. Maximal degree in co-relation 29560. Up to 2005 conditions per place. [2024-06-21 20:47:56,907 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 555 selfloop transitions, 147 changer transitions 0/705 dead transitions. [2024-06-21 20:47:56,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 705 transitions, 12329 flow [2024-06-21 20:47:56,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:47:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:47:56,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 20:47:56,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 20:47:56,908 INFO L175 Difference]: Start difference. First operand has 629 places, 688 transitions, 10375 flow. Second operand 11 states and 145 transitions. [2024-06-21 20:47:56,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 705 transitions, 12329 flow [2024-06-21 20:48:04,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 705 transitions, 11952 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-21 20:48:04,734 INFO L231 Difference]: Finished difference. Result has 632 places, 690 transitions, 10398 flow [2024-06-21 20:48:04,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=10002, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10398, PETRI_PLACES=632, PETRI_TRANSITIONS=690} [2024-06-21 20:48:04,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 601 predicate places. [2024-06-21 20:48:04,734 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 690 transitions, 10398 flow [2024-06-21 20:48:04,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:48:04,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:48:04,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:48:04,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-21 20:48:04,735 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)] === [2024-06-21 20:48:04,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:48:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash -31408245, now seen corresponding path program 13 times [2024-06-21 20:48:04,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:48:04,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122440329] [2024-06-21 20:48:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:48:04,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:48:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:48:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:48:06,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:48:06,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122440329] [2024-06-21 20:48:06,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122440329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:48:06,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:48:06,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:48:06,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362970116] [2024-06-21 20:48:06,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:48:06,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:48:06,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:48:06,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:48:06,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:48:06,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:48:06,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 690 transitions, 10398 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:48:06,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:48:06,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:48:06,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:48:07,771 INFO L124 PetriNetUnfolderBase]: 1411/2666 cut-off events. [2024-06-21 20:48:07,771 INFO L125 PetriNetUnfolderBase]: For 1176292/1176292 co-relation queries the response was YES. [2024-06-21 20:48:07,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29299 conditions, 2666 events. 1411/2666 cut-off events. For 1176292/1176292 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 18102 event pairs, 104 based on Foata normal form. 2/2666 useless extension candidates. Maximal degree in co-relation 29013. Up to 1731 conditions per place. [2024-06-21 20:48:07,822 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 430 selfloop transitions, 272 changer transitions 0/705 dead transitions. [2024-06-21 20:48:07,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 705 transitions, 12672 flow [2024-06-21 20:48:07,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:48:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:48:07,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-21 20:48:07,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-21 20:48:07,823 INFO L175 Difference]: Start difference. First operand has 632 places, 690 transitions, 10398 flow. Second operand 12 states and 157 transitions. [2024-06-21 20:48:07,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 705 transitions, 12672 flow [2024-06-21 20:48:15,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 705 transitions, 12329 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-21 20:48:15,914 INFO L231 Difference]: Finished difference. Result has 637 places, 690 transitions, 10607 flow [2024-06-21 20:48:15,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=10055, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10607, PETRI_PLACES=637, PETRI_TRANSITIONS=690} [2024-06-21 20:48:15,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 606 predicate places. [2024-06-21 20:48:15,915 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 690 transitions, 10607 flow [2024-06-21 20:48:15,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:48:15,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:48:15,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:48:15,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-21 20:48:15,915 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)] === [2024-06-21 20:48:15,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:48:15,915 INFO L85 PathProgramCache]: Analyzing trace with hash 528694555, now seen corresponding path program 14 times [2024-06-21 20:48:15,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:48:15,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570568393] [2024-06-21 20:48:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:48:15,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:48:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:48:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:48:17,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:48:17,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570568393] [2024-06-21 20:48:17,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570568393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:48:17,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:48:17,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:48:17,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599365074] [2024-06-21 20:48:17,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:48:17,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:48:17,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:48:17,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:48:17,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:48:17,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:48:17,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 690 transitions, 10607 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:48:17,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:48:17,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:48:17,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:48:18,834 INFO L124 PetriNetUnfolderBase]: 1407/2660 cut-off events. [2024-06-21 20:48:18,834 INFO L125 PetriNetUnfolderBase]: For 1141909/1141909 co-relation queries the response was YES. [2024-06-21 20:48:18,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29128 conditions, 2660 events. 1407/2660 cut-off events. For 1141909/1141909 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 18096 event pairs, 104 based on Foata normal form. 2/2660 useless extension candidates. Maximal degree in co-relation 28840. Up to 1727 conditions per place. [2024-06-21 20:48:18,887 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 451 selfloop transitions, 252 changer transitions 0/706 dead transitions. [2024-06-21 20:48:18,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 706 transitions, 12898 flow [2024-06-21 20:48:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:48:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:48:18,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-21 20:48:18,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-21 20:48:18,888 INFO L175 Difference]: Start difference. First operand has 637 places, 690 transitions, 10607 flow. Second operand 12 states and 159 transitions. [2024-06-21 20:48:18,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 706 transitions, 12898 flow [2024-06-21 20:48:26,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 706 transitions, 12228 flow, removed 58 selfloop flow, removed 11 redundant places. [2024-06-21 20:48:26,678 INFO L231 Difference]: Finished difference. Result has 638 places, 690 transitions, 10449 flow [2024-06-21 20:48:26,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9937, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10449, PETRI_PLACES=638, PETRI_TRANSITIONS=690} [2024-06-21 20:48:26,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 607 predicate places. [2024-06-21 20:48:26,679 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 690 transitions, 10449 flow [2024-06-21 20:48:26,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:48:26,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:48:26,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:48:26,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-21 20:48:26,679 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)] === [2024-06-21 20:48:26,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:48:26,680 INFO L85 PathProgramCache]: Analyzing trace with hash 778045225, now seen corresponding path program 15 times [2024-06-21 20:48:26,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:48:26,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320071988] [2024-06-21 20:48:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:48:26,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:48:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:48:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:48:28,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:48:28,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320071988] [2024-06-21 20:48:28,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320071988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:48:28,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:48:28,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:48:28,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093569377] [2024-06-21 20:48:28,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:48:28,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:48:28,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:48:28,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:48:28,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:48:28,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:48:28,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 690 transitions, 10449 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:48:28,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:48:28,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:48:28,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:48:29,536 INFO L124 PetriNetUnfolderBase]: 1403/2654 cut-off events. [2024-06-21 20:48:29,536 INFO L125 PetriNetUnfolderBase]: For 1107033/1107033 co-relation queries the response was YES. [2024-06-21 20:48:29,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28510 conditions, 2654 events. 1403/2654 cut-off events. For 1107033/1107033 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 18036 event pairs, 104 based on Foata normal form. 2/2654 useless extension candidates. Maximal degree in co-relation 28221. Up to 1723 conditions per place. [2024-06-21 20:48:29,592 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 428 selfloop transitions, 273 changer transitions 0/704 dead transitions. [2024-06-21 20:48:29,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 704 transitions, 12305 flow [2024-06-21 20:48:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:48:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:48:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 20:48:29,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 20:48:29,593 INFO L175 Difference]: Start difference. First operand has 638 places, 690 transitions, 10449 flow. Second operand 12 states and 154 transitions. [2024-06-21 20:48:29,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 704 transitions, 12305 flow [2024-06-21 20:48:37,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 704 transitions, 11835 flow, removed 58 selfloop flow, removed 10 redundant places. [2024-06-21 20:48:37,842 INFO L231 Difference]: Finished difference. Result has 640 places, 690 transitions, 10533 flow [2024-06-21 20:48:37,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9979, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10533, PETRI_PLACES=640, PETRI_TRANSITIONS=690} [2024-06-21 20:48:37,842 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 609 predicate places. [2024-06-21 20:48:37,842 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 690 transitions, 10533 flow [2024-06-21 20:48:37,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:48:37,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:48:37,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:48:37,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-21 20:48:37,843 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)] === [2024-06-21 20:48:37,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:48:37,843 INFO L85 PathProgramCache]: Analyzing trace with hash -23789406, now seen corresponding path program 13 times [2024-06-21 20:48:37,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:48:37,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382878795] [2024-06-21 20:48:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:48:37,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:48:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:48:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:48:38,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:48:38,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382878795] [2024-06-21 20:48:38,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382878795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:48:38,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:48:38,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:48:38,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770243131] [2024-06-21 20:48:38,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:48:38,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:48:38,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:48:38,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:48:38,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:48:38,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:48:38,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 690 transitions, 10533 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:48:38,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:48:38,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:48:38,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:48:39,993 INFO L124 PetriNetUnfolderBase]: 1400/2647 cut-off events. [2024-06-21 20:48:39,993 INFO L125 PetriNetUnfolderBase]: For 1073240/1073240 co-relation queries the response was YES. [2024-06-21 20:48:40,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28082 conditions, 2647 events. 1400/2647 cut-off events. For 1073240/1073240 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 17978 event pairs, 101 based on Foata normal form. 2/2647 useless extension candidates. Maximal degree in co-relation 27792. Up to 2009 conditions per place. [2024-06-21 20:48:40,044 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 553 selfloop transitions, 148 changer transitions 0/704 dead transitions. [2024-06-21 20:48:40,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 704 transitions, 11976 flow [2024-06-21 20:48:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:48:40,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:48:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 20:48:40,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 20:48:40,045 INFO L175 Difference]: Start difference. First operand has 640 places, 690 transitions, 10533 flow. Second operand 11 states and 144 transitions. [2024-06-21 20:48:40,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 704 transitions, 11976 flow [2024-06-21 20:48:46,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 704 transitions, 11372 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-21 20:48:46,327 INFO L231 Difference]: Finished difference. Result has 640 places, 690 transitions, 10230 flow [2024-06-21 20:48:46,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9929, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10230, PETRI_PLACES=640, PETRI_TRANSITIONS=690} [2024-06-21 20:48:46,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 609 predicate places. [2024-06-21 20:48:46,328 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 690 transitions, 10230 flow [2024-06-21 20:48:46,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:48:46,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:48:46,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:48:46,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-21 20:48:46,328 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)] === [2024-06-21 20:48:46,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:48:46,328 INFO L85 PathProgramCache]: Analyzing trace with hash 225561264, now seen corresponding path program 14 times [2024-06-21 20:48:46,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:48:46,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620886369] [2024-06-21 20:48:46,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:48:46,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:48:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:48:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:48:47,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:48:47,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620886369] [2024-06-21 20:48:47,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620886369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:48:47,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:48:47,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:48:47,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423410726] [2024-06-21 20:48:47,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:48:47,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:48:47,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:48:47,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:48:47,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:48:47,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:48:47,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 690 transitions, 10230 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:48:47,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:48:47,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:48:47,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:48:48,435 INFO L124 PetriNetUnfolderBase]: 1401/2650 cut-off events. [2024-06-21 20:48:48,436 INFO L125 PetriNetUnfolderBase]: For 1081746/1081746 co-relation queries the response was YES. [2024-06-21 20:48:48,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27450 conditions, 2650 events. 1401/2650 cut-off events. For 1081746/1081746 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 18016 event pairs, 102 based on Foata normal form. 4/2652 useless extension candidates. Maximal degree in co-relation 27159. Up to 1996 conditions per place. [2024-06-21 20:48:48,489 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 538 selfloop transitions, 163 changer transitions 0/704 dead transitions. [2024-06-21 20:48:48,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 704 transitions, 11712 flow [2024-06-21 20:48:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:48:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:48:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 20:48:48,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 20:48:48,489 INFO L175 Difference]: Start difference. First operand has 640 places, 690 transitions, 10230 flow. Second operand 11 states and 142 transitions. [2024-06-21 20:48:48,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 704 transitions, 11712 flow [2024-06-21 20:48:54,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 704 transitions, 11376 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-21 20:48:54,914 INFO L231 Difference]: Finished difference. Result has 641 places, 691 transitions, 10283 flow [2024-06-21 20:48:54,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9894, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10283, PETRI_PLACES=641, PETRI_TRANSITIONS=691} [2024-06-21 20:48:54,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 610 predicate places. [2024-06-21 20:48:54,915 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 691 transitions, 10283 flow [2024-06-21 20:48:54,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:48:54,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:48:54,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:48:54,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-21 20:48:54,915 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)] === [2024-06-21 20:48:54,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:48:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash 234507864, now seen corresponding path program 15 times [2024-06-21 20:48:54,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:48:54,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015100542] [2024-06-21 20:48:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:48:54,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:48:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:48:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:48:56,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:48:56,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015100542] [2024-06-21 20:48:56,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015100542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:48:56,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:48:56,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:48:56,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986479446] [2024-06-21 20:48:56,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:48:56,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:48:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:48:56,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:48:56,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:48:56,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:48:56,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 691 transitions, 10283 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:48:56,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:48:56,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:48:56,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:48:58,081 INFO L124 PetriNetUnfolderBase]: 1405/2657 cut-off events. [2024-06-21 20:48:58,082 INFO L125 PetriNetUnfolderBase]: For 1046459/1046459 co-relation queries the response was YES. [2024-06-21 20:48:58,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27601 conditions, 2657 events. 1405/2657 cut-off events. For 1046459/1046459 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 18115 event pairs, 100 based on Foata normal form. 2/2657 useless extension candidates. Maximal degree in co-relation 27309. Up to 1961 conditions per place. [2024-06-21 20:48:58,132 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 506 selfloop transitions, 198 changer transitions 0/707 dead transitions. [2024-06-21 20:48:58,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 707 transitions, 11777 flow [2024-06-21 20:48:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:48:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:48:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-21 20:48:58,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-21 20:48:58,133 INFO L175 Difference]: Start difference. First operand has 641 places, 691 transitions, 10283 flow. Second operand 12 states and 155 transitions. [2024-06-21 20:48:58,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 707 transitions, 11777 flow [2024-06-21 20:49:04,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 707 transitions, 11418 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 20:49:04,478 INFO L231 Difference]: Finished difference. Result has 644 places, 692 transitions, 10378 flow [2024-06-21 20:49:04,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9924, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10378, PETRI_PLACES=644, PETRI_TRANSITIONS=692} [2024-06-21 20:49:04,478 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 613 predicate places. [2024-06-21 20:49:04,478 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 692 transitions, 10378 flow [2024-06-21 20:49:04,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:49:04,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:49:04,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:49:04,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-21 20:49:04,479 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)] === [2024-06-21 20:49:04,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:49:04,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1687731917, now seen corresponding path program 16 times [2024-06-21 20:49:04,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:49:04,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853268929] [2024-06-21 20:49:04,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:49:04,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:49:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:49:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:49:05,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:49:05,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853268929] [2024-06-21 20:49:05,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853268929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:49:05,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:49:05,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:49:05,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9810372] [2024-06-21 20:49:05,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:49:05,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:49:05,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:49:05,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:49:05,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:49:05,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:49:05,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 692 transitions, 10378 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:49:05,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:49:05,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:49:05,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:49:07,104 INFO L124 PetriNetUnfolderBase]: 1427/2698 cut-off events. [2024-06-21 20:49:07,104 INFO L125 PetriNetUnfolderBase]: For 1148357/1148357 co-relation queries the response was YES. [2024-06-21 20:49:07,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28786 conditions, 2698 events. 1427/2698 cut-off events. For 1148357/1148357 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 18460 event pairs, 100 based on Foata normal form. 4/2700 useless extension candidates. Maximal degree in co-relation 28493. Up to 2229 conditions per place. [2024-06-21 20:49:07,162 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 601 selfloop transitions, 115 changer transitions 0/719 dead transitions. [2024-06-21 20:49:07,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 719 transitions, 13274 flow [2024-06-21 20:49:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:49:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:49:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-21 20:49:07,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-21 20:49:07,163 INFO L175 Difference]: Start difference. First operand has 644 places, 692 transitions, 10378 flow. Second operand 12 states and 158 transitions. [2024-06-21 20:49:07,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 719 transitions, 13274 flow [2024-06-21 20:49:14,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 719 transitions, 12820 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-21 20:49:14,501 INFO L231 Difference]: Finished difference. Result has 648 places, 704 transitions, 10744 flow [2024-06-21 20:49:14,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9924, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10744, PETRI_PLACES=648, PETRI_TRANSITIONS=704} [2024-06-21 20:49:14,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 617 predicate places. [2024-06-21 20:49:14,502 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 704 transitions, 10744 flow [2024-06-21 20:49:14,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:49:14,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:49:14,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:49:14,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-21 20:49:14,502 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)] === [2024-06-21 20:49:14,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:49:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1687739636, now seen corresponding path program 16 times [2024-06-21 20:49:14,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:49:14,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891565596] [2024-06-21 20:49:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:49:14,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:49:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:49:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:49:15,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:49:15,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891565596] [2024-06-21 20:49:15,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891565596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:49:15,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:49:15,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:49:15,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843426977] [2024-06-21 20:49:15,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:49:15,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:49:15,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:49:15,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:49:15,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:49:16,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:49:16,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 704 transitions, 10744 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:49:16,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:49:16,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:49:16,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:49:17,175 INFO L124 PetriNetUnfolderBase]: 1431/2708 cut-off events. [2024-06-21 20:49:17,175 INFO L125 PetriNetUnfolderBase]: For 1123654/1123654 co-relation queries the response was YES. [2024-06-21 20:49:17,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28667 conditions, 2708 events. 1431/2708 cut-off events. For 1123654/1123654 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 18533 event pairs, 102 based on Foata normal form. 2/2708 useless extension candidates. Maximal degree in co-relation 28373. Up to 2349 conditions per place. [2024-06-21 20:49:17,226 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 642 selfloop transitions, 74 changer transitions 0/719 dead transitions. [2024-06-21 20:49:17,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 719 transitions, 12262 flow [2024-06-21 20:49:17,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:49:17,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:49:17,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 20:49:17,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 20:49:17,227 INFO L175 Difference]: Start difference. First operand has 648 places, 704 transitions, 10744 flow. Second operand 12 states and 149 transitions. [2024-06-21 20:49:17,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 719 transitions, 12262 flow [2024-06-21 20:49:25,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 719 transitions, 11230 flow, removed 173 selfloop flow, removed 12 redundant places. [2024-06-21 20:49:25,274 INFO L231 Difference]: Finished difference. Result has 648 places, 705 transitions, 9921 flow [2024-06-21 20:49:25,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9712, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9921, PETRI_PLACES=648, PETRI_TRANSITIONS=705} [2024-06-21 20:49:25,274 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 617 predicate places. [2024-06-21 20:49:25,274 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 705 transitions, 9921 flow [2024-06-21 20:49:25,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:49:25,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:49:25,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:49:25,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-21 20:49:25,275 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)] === [2024-06-21 20:49:25,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:49:25,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1695148946, now seen corresponding path program 17 times [2024-06-21 20:49:25,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:49:25,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286842691] [2024-06-21 20:49:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:49:25,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:49:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:49:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:49:26,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:49:26,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286842691] [2024-06-21 20:49:26,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286842691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:49:26,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:49:26,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:49:26,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176015000] [2024-06-21 20:49:26,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:49:26,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:49:26,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:49:26,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:49:26,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:49:26,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:49:26,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 705 transitions, 9921 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:49:26,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:49:26,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:49:26,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:49:27,750 INFO L124 PetriNetUnfolderBase]: 1435/2715 cut-off events. [2024-06-21 20:49:27,750 INFO L125 PetriNetUnfolderBase]: For 1114949/1114949 co-relation queries the response was YES. [2024-06-21 20:49:27,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27948 conditions, 2715 events. 1435/2715 cut-off events. For 1114949/1114949 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 18572 event pairs, 104 based on Foata normal form. 2/2715 useless extension candidates. Maximal degree in co-relation 27656. Up to 2303 conditions per place. [2024-06-21 20:49:27,804 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 633 selfloop transitions, 83 changer transitions 0/719 dead transitions. [2024-06-21 20:49:27,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 719 transitions, 11439 flow [2024-06-21 20:49:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:49:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:49:27,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 20:49:27,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 20:49:27,805 INFO L175 Difference]: Start difference. First operand has 648 places, 705 transitions, 9921 flow. Second operand 11 states and 141 transitions. [2024-06-21 20:49:27,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 719 transitions, 11439 flow [2024-06-21 20:49:35,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 719 transitions, 11198 flow, removed 25 selfloop flow, removed 13 redundant places. [2024-06-21 20:49:35,154 INFO L231 Difference]: Finished difference. Result has 646 places, 706 transitions, 9911 flow [2024-06-21 20:49:35,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9680, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9911, PETRI_PLACES=646, PETRI_TRANSITIONS=706} [2024-06-21 20:49:35,155 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 615 predicate places. [2024-06-21 20:49:35,155 INFO L495 AbstractCegarLoop]: Abstraction has has 646 places, 706 transitions, 9911 flow [2024-06-21 20:49:35,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:49:35,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:49:35,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:49:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-21 20:49:35,155 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)] === [2024-06-21 20:49:35,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:49:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1695158246, now seen corresponding path program 18 times [2024-06-21 20:49:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:49:35,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474787744] [2024-06-21 20:49:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:49:35,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:49:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:49:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:49:36,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:49:36,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474787744] [2024-06-21 20:49:36,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474787744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:49:36,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:49:36,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:49:36,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67560304] [2024-06-21 20:49:36,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:49:36,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:49:36,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:49:36,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:49:36,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:49:36,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:49:36,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 706 transitions, 9911 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:49:36,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:49:36,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:49:36,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:49:37,715 INFO L124 PetriNetUnfolderBase]: 1432/2708 cut-off events. [2024-06-21 20:49:37,715 INFO L125 PetriNetUnfolderBase]: For 1076354/1076354 co-relation queries the response was YES. [2024-06-21 20:49:37,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27390 conditions, 2708 events. 1432/2708 cut-off events. For 1076354/1076354 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 18553 event pairs, 101 based on Foata normal form. 2/2708 useless extension candidates. Maximal degree in co-relation 27097. Up to 2266 conditions per place. [2024-06-21 20:49:37,764 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 632 selfloop transitions, 85 changer transitions 0/720 dead transitions. [2024-06-21 20:49:37,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 720 transitions, 11377 flow [2024-06-21 20:49:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:49:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:49:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 20:49:37,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 20:49:37,765 INFO L175 Difference]: Start difference. First operand has 646 places, 706 transitions, 9911 flow. Second operand 11 states and 141 transitions. [2024-06-21 20:49:37,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 720 transitions, 11377 flow [2024-06-21 20:49:45,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 720 transitions, 11164 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 20:49:45,170 INFO L231 Difference]: Finished difference. Result has 648 places, 706 transitions, 9872 flow [2024-06-21 20:49:45,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9698, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9872, PETRI_PLACES=648, PETRI_TRANSITIONS=706} [2024-06-21 20:49:45,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 617 predicate places. [2024-06-21 20:49:45,170 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 706 transitions, 9872 flow [2024-06-21 20:49:45,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:49:45,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:49:45,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:49:45,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-21 20:49:45,170 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)] === [2024-06-21 20:49:45,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:49:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1694881757, now seen corresponding path program 17 times [2024-06-21 20:49:45,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:49:45,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577611730] [2024-06-21 20:49:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:49:45,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:49:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:49:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:49:46,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:49:46,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577611730] [2024-06-21 20:49:46,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577611730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:49:46,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:49:46,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:49:46,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493870240] [2024-06-21 20:49:46,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:49:46,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:49:46,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:49:46,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:49:46,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:49:47,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:49:47,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 706 transitions, 9872 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:49:47,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:49:47,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:49:47,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:49:48,207 INFO L124 PetriNetUnfolderBase]: 1438/2722 cut-off events. [2024-06-21 20:49:48,207 INFO L125 PetriNetUnfolderBase]: For 1086386/1086386 co-relation queries the response was YES. [2024-06-21 20:49:48,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27522 conditions, 2722 events. 1438/2722 cut-off events. For 1086386/1086386 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 18691 event pairs, 103 based on Foata normal form. 2/2722 useless extension candidates. Maximal degree in co-relation 27228. Up to 2302 conditions per place. [2024-06-21 20:49:48,263 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 619 selfloop transitions, 101 changer transitions 0/723 dead transitions. [2024-06-21 20:49:48,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 723 transitions, 11500 flow [2024-06-21 20:49:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:49:48,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:49:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 20:49:48,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 20:49:48,264 INFO L175 Difference]: Start difference. First operand has 648 places, 706 transitions, 9872 flow. Second operand 12 states and 150 transitions. [2024-06-21 20:49:48,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 723 transitions, 11500 flow [2024-06-21 20:49:55,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 723 transitions, 11040 flow, removed 27 selfloop flow, removed 12 redundant places. [2024-06-21 20:49:55,550 INFO L231 Difference]: Finished difference. Result has 648 places, 710 transitions, 9788 flow [2024-06-21 20:49:55,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9412, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9788, PETRI_PLACES=648, PETRI_TRANSITIONS=710} [2024-06-21 20:49:55,550 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 617 predicate places. [2024-06-21 20:49:55,550 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 710 transitions, 9788 flow [2024-06-21 20:49:55,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:49:55,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:49:55,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:49:55,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-21 20:49:55,551 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)] === [2024-06-21 20:49:55,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:49:55,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1687530107, now seen corresponding path program 18 times [2024-06-21 20:49:55,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:49:55,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043411932] [2024-06-21 20:49:55,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:49:55,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:49:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:49:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:49:57,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:49:57,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043411932] [2024-06-21 20:49:57,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043411932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:49:57,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:49:57,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:49:57,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634634548] [2024-06-21 20:49:57,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:49:57,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:49:57,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:49:57,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:49:57,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:49:57,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:49:57,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 710 transitions, 9788 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:49:57,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:49:57,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:49:57,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:49:58,437 INFO L124 PetriNetUnfolderBase]: 1434/2717 cut-off events. [2024-06-21 20:49:58,437 INFO L125 PetriNetUnfolderBase]: For 1046313/1046313 co-relation queries the response was YES. [2024-06-21 20:49:58,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26403 conditions, 2717 events. 1434/2717 cut-off events. For 1046313/1046313 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 18639 event pairs, 103 based on Foata normal form. 2/2717 useless extension candidates. Maximal degree in co-relation 26110. Up to 2244 conditions per place. [2024-06-21 20:49:58,492 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 595 selfloop transitions, 126 changer transitions 0/724 dead transitions. [2024-06-21 20:49:58,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 724 transitions, 11702 flow [2024-06-21 20:49:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:49:58,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:49:58,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-21 20:49:58,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-21 20:49:58,493 INFO L175 Difference]: Start difference. First operand has 648 places, 710 transitions, 9788 flow. Second operand 12 states and 155 transitions. [2024-06-21 20:49:58,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 724 transitions, 11702 flow [2024-06-21 20:50:06,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 724 transitions, 11282 flow, removed 112 selfloop flow, removed 10 redundant places. [2024-06-21 20:50:06,068 INFO L231 Difference]: Finished difference. Result has 650 places, 710 transitions, 9628 flow [2024-06-21 20:50:06,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9368, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9628, PETRI_PLACES=650, PETRI_TRANSITIONS=710} [2024-06-21 20:50:06,068 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 619 predicate places. [2024-06-21 20:50:06,068 INFO L495 AbstractCegarLoop]: Abstraction has has 650 places, 710 transitions, 9628 flow [2024-06-21 20:50:06,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:50:06,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:50:06,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:50:06,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-21 20:50:06,069 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)] === [2024-06-21 20:50:06,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:50:06,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2047067479, now seen corresponding path program 19 times [2024-06-21 20:50:06,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:50:06,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869762676] [2024-06-21 20:50:06,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:50:06,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:50:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:50:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:50:07,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:50:07,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869762676] [2024-06-21 20:50:07,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869762676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:50:07,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:50:07,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:50:07,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943591882] [2024-06-21 20:50:07,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:50:07,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:50:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:50:07,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:50:07,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:50:07,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:50:07,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 710 transitions, 9628 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:50:07,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:50:07,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:50:07,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:50:08,790 INFO L124 PetriNetUnfolderBase]: 1440/2730 cut-off events. [2024-06-21 20:50:08,790 INFO L125 PetriNetUnfolderBase]: For 1055156/1055156 co-relation queries the response was YES. [2024-06-21 20:50:08,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26482 conditions, 2730 events. 1440/2730 cut-off events. For 1055156/1055156 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 18764 event pairs, 103 based on Foata normal form. 2/2730 useless extension candidates. Maximal degree in co-relation 26188. Up to 2226 conditions per place. [2024-06-21 20:50:08,845 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 582 selfloop transitions, 143 changer transitions 0/728 dead transitions. [2024-06-21 20:50:08,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 728 transitions, 11726 flow [2024-06-21 20:50:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:50:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:50:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 20:50:08,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 20:50:08,846 INFO L175 Difference]: Start difference. First operand has 650 places, 710 transitions, 9628 flow. Second operand 12 states and 153 transitions. [2024-06-21 20:50:08,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 728 transitions, 11726 flow [2024-06-21 20:50:15,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 728 transitions, 11457 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-21 20:50:16,002 INFO L231 Difference]: Finished difference. Result has 652 places, 714 transitions, 9826 flow [2024-06-21 20:50:16,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9371, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9826, PETRI_PLACES=652, PETRI_TRANSITIONS=714} [2024-06-21 20:50:16,002 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 621 predicate places. [2024-06-21 20:50:16,002 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 714 transitions, 9826 flow [2024-06-21 20:50:16,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:50:16,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:50:16,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:50:16,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-21 20:50:16,002 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)] === [2024-06-21 20:50:16,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:50:16,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1694889197, now seen corresponding path program 20 times [2024-06-21 20:50:16,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:50:16,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782051682] [2024-06-21 20:50:16,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:50:16,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:50:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:50:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:50:17,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:50:17,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782051682] [2024-06-21 20:50:17,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782051682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:50:17,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:50:17,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:50:17,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694433812] [2024-06-21 20:50:17,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:50:17,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:50:17,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:50:17,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:50:17,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:50:18,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:50:18,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 714 transitions, 9826 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:50:18,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:50:18,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:50:18,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:50:19,245 INFO L124 PetriNetUnfolderBase]: 1436/2724 cut-off events. [2024-06-21 20:50:19,245 INFO L125 PetriNetUnfolderBase]: For 1015430/1015430 co-relation queries the response was YES. [2024-06-21 20:50:19,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26000 conditions, 2724 events. 1436/2724 cut-off events. For 1015430/1015430 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 18745 event pairs, 103 based on Foata normal form. 2/2724 useless extension candidates. Maximal degree in co-relation 25705. Up to 2288 conditions per place. [2024-06-21 20:50:19,300 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 617 selfloop transitions, 108 changer transitions 0/728 dead transitions. [2024-06-21 20:50:19,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 728 transitions, 11308 flow [2024-06-21 20:50:19,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 20:50:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 20:50:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-21 20:50:19,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870192307692308 [2024-06-21 20:50:19,301 INFO L175 Difference]: Start difference. First operand has 652 places, 714 transitions, 9826 flow. Second operand 13 states and 161 transitions. [2024-06-21 20:50:19,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 728 transitions, 11308 flow [2024-06-21 20:50:26,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 728 transitions, 10645 flow, removed 124 selfloop flow, removed 10 redundant places. [2024-06-21 20:50:26,016 INFO L231 Difference]: Finished difference. Result has 655 places, 714 transitions, 9386 flow [2024-06-21 20:50:26,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9163, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9386, PETRI_PLACES=655, PETRI_TRANSITIONS=714} [2024-06-21 20:50:26,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 624 predicate places. [2024-06-21 20:50:26,016 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 714 transitions, 9386 flow [2024-06-21 20:50:26,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:50:26,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:50:26,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:50:26,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-21 20:50:26,016 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)] === [2024-06-21 20:50:26,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:50:26,017 INFO L85 PathProgramCache]: Analyzing trace with hash -317195219, now seen corresponding path program 16 times [2024-06-21 20:50:26,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:50:26,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235133735] [2024-06-21 20:50:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:50:26,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:50:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:50:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:50:27,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:50:27,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235133735] [2024-06-21 20:50:27,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235133735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:50:27,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:50:27,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:50:27,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040936989] [2024-06-21 20:50:27,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:50:27,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:50:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:50:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:50:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:50:27,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:50:27,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 714 transitions, 9386 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) [2024-06-21 20:50:27,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:50:27,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:50:27,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:50:28,302 INFO L124 PetriNetUnfolderBase]: 1440/2733 cut-off events. [2024-06-21 20:50:28,302 INFO L125 PetriNetUnfolderBase]: For 1022430/1022430 co-relation queries the response was YES. [2024-06-21 20:50:28,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25863 conditions, 2733 events. 1440/2733 cut-off events. For 1022430/1022430 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 18842 event pairs, 112 based on Foata normal form. 2/2730 useless extension candidates. Maximal degree in co-relation 25567. Up to 2237 conditions per place. [2024-06-21 20:50:28,355 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 603 selfloop transitions, 120 changer transitions 0/726 dead transitions. [2024-06-21 20:50:28,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 726 transitions, 10932 flow [2024-06-21 20:50:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:50:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:50:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 20:50:28,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 20:50:28,356 INFO L175 Difference]: Start difference. First operand has 655 places, 714 transitions, 9386 flow. Second operand 11 states and 136 transitions. [2024-06-21 20:50:28,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 726 transitions, 10932 flow [2024-06-21 20:50:35,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 726 transitions, 10667 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-06-21 20:50:35,722 INFO L231 Difference]: Finished difference. Result has 653 places, 715 transitions, 9443 flow [2024-06-21 20:50:35,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9121, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9443, PETRI_PLACES=653, PETRI_TRANSITIONS=715} [2024-06-21 20:50:35,723 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 622 predicate places. [2024-06-21 20:50:35,723 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 715 transitions, 9443 flow [2024-06-21 20:50:35,723 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) [2024-06-21 20:50:35,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:50:35,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:50:35,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-21 20:50:35,723 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)] === [2024-06-21 20:50:35,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:50:35,724 INFO L85 PathProgramCache]: Analyzing trace with hash -52462450, now seen corresponding path program 19 times [2024-06-21 20:50:35,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:50:35,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436931961] [2024-06-21 20:50:35,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:50:35,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:50:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:50:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:50:37,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:50:37,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436931961] [2024-06-21 20:50:37,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436931961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:50:37,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:50:37,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:50:37,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018706256] [2024-06-21 20:50:37,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:50:37,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:50:37,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:50:37,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:50:37,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:50:37,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:50:37,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 715 transitions, 9443 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:50:37,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:50:37,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:50:37,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:50:38,670 INFO L124 PetriNetUnfolderBase]: 1464/2778 cut-off events. [2024-06-21 20:50:38,670 INFO L125 PetriNetUnfolderBase]: For 1083789/1083789 co-relation queries the response was YES. [2024-06-21 20:50:38,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26731 conditions, 2778 events. 1464/2778 cut-off events. For 1083789/1083789 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 19217 event pairs, 225 based on Foata normal form. 2/2778 useless extension candidates. Maximal degree in co-relation 26434. Up to 2523 conditions per place. [2024-06-21 20:50:38,727 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 704 selfloop transitions, 31 changer transitions 0/738 dead transitions. [2024-06-21 20:50:38,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 738 transitions, 11542 flow [2024-06-21 20:50:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:50:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:50:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 20:50:38,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:50:38,728 INFO L175 Difference]: Start difference. First operand has 653 places, 715 transitions, 9443 flow. Second operand 12 states and 144 transitions. [2024-06-21 20:50:38,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 738 transitions, 11542 flow [2024-06-21 20:50:46,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 738 transitions, 11230 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-21 20:50:46,308 INFO L231 Difference]: Finished difference. Result has 657 places, 723 transitions, 9349 flow [2024-06-21 20:50:46,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9131, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=690, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9349, PETRI_PLACES=657, PETRI_TRANSITIONS=723} [2024-06-21 20:50:46,309 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 626 predicate places. [2024-06-21 20:50:46,309 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 723 transitions, 9349 flow [2024-06-21 20:50:46,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:50:46,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:50:46,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:50:46,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-21 20:50:46,309 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)] === [2024-06-21 20:50:46,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:50:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash 765966852, now seen corresponding path program 20 times [2024-06-21 20:50:46,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:50:46,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922788778] [2024-06-21 20:50:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:50:46,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:50:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:50:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:50:47,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:50:47,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922788778] [2024-06-21 20:50:47,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922788778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:50:47,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:50:47,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:50:47,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417813927] [2024-06-21 20:50:47,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:50:47,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:50:47,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:50:47,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:50:47,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:50:47,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:50:47,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 723 transitions, 9349 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:50:47,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:50:47,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:50:47,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:50:48,545 INFO L124 PetriNetUnfolderBase]: 1465/2779 cut-off events. [2024-06-21 20:50:48,545 INFO L125 PetriNetUnfolderBase]: For 1091282/1091282 co-relation queries the response was YES. [2024-06-21 20:50:48,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26049 conditions, 2779 events. 1465/2779 cut-off events. For 1091282/1091282 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 19217 event pairs, 226 based on Foata normal form. 4/2781 useless extension candidates. Maximal degree in co-relation 25750. Up to 2535 conditions per place. [2024-06-21 20:50:48,602 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 700 selfloop transitions, 32 changer transitions 0/735 dead transitions. [2024-06-21 20:50:48,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 735 transitions, 10887 flow [2024-06-21 20:50:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:50:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:50:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 20:50:48,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-21 20:50:48,603 INFO L175 Difference]: Start difference. First operand has 657 places, 723 transitions, 9349 flow. Second operand 11 states and 129 transitions. [2024-06-21 20:50:48,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 735 transitions, 10887 flow [2024-06-21 20:50:56,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 735 transitions, 10775 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-21 20:50:56,196 INFO L231 Difference]: Finished difference. Result has 663 places, 724 transitions, 9360 flow [2024-06-21 20:50:56,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9237, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9360, PETRI_PLACES=663, PETRI_TRANSITIONS=724} [2024-06-21 20:50:56,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 632 predicate places. [2024-06-21 20:50:56,197 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 724 transitions, 9360 flow [2024-06-21 20:50:56,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:50:56,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:50:56,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:50:56,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-21 20:50:56,198 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)] === [2024-06-21 20:50:56,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:50:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash -50956028, now seen corresponding path program 21 times [2024-06-21 20:50:56,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:50:56,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923562045] [2024-06-21 20:50:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:50:56,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:50:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15