./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.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/mix022_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:10:37,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:10:37,820 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:10:37,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:10:37,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:10:37,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:10:37,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:10:37,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:10:37,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:10:37,868 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:10:37,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:10:37,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:10:37,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:10:37,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:10:37,871 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:10:37,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:10:37,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:10:37,872 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:10:37,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:10:37,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:10:37,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:10:37,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:10:37,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:10:37,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:10:37,874 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:10:37,874 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:10:37,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:10:37,875 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:10:37,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:10:37,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:10:37,877 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:10:37,877 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:10:37,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:10:37,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:10:37,878 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:10:37,878 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:10:37,878 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:10:37,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:10:37,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:10:37,879 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:10:37,879 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:10:37,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:10:37,880 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:10:37,880 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:10:38,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:10:38,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:10:38,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:10:38,215 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:10:38,216 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:10:38,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_tso.yml/witness.yml [2024-06-28 03:10:38,355 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:10:38,355 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:10:38,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-28 03:10:39,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:10:39,821 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:10:39,822 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-28 03:10:39,845 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f912a3e/9b5677a6eeeb4a6d8f5692552ce7e82d/FLAG2702c5696 [2024-06-28 03:10:39,864 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f912a3e/9b5677a6eeeb4a6d8f5692552ce7e82d [2024-06-28 03:10:39,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:10:39,866 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:10:39,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:10:39,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:10:39,873 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:10:39,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:10:38" (1/2) ... [2024-06-28 03:10:39,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405beaa4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:10:39, skipping insertion in model container [2024-06-28 03:10:39,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:10:38" (1/2) ... [2024-06-28 03:10:39,877 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@597fb4d6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:10:39, skipping insertion in model container [2024-06-28 03:10:39,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:10:39" (2/2) ... [2024-06-28 03:10:39,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405beaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:39, skipping insertion in model container [2024-06-28 03:10:39,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:10:39" (2/2) ... [2024-06-28 03:10:39,879 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:10:39,945 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:10:39,946 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:10:39,947 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:10:39,947 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:10:39,947 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-28 03:10:39,990 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:10:40,385 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:10:40,401 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:10:40,535 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:10:40,575 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:10:40,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40 WrapperNode [2024-06-28 03:10:40,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:10:40,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:10:40,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:10:40,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:10:40,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (1/1) ... [2024-06-28 03:10:40,610 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (1/1) ... [2024-06-28 03:10:40,665 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2024-06-28 03:10:40,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:10:40,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:10:40,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:10:40,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:10:40,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (1/1) ... [2024-06-28 03:10:40,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (1/1) ... [2024-06-28 03:10:40,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (1/1) ... [2024-06-28 03:10:40,710 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:10:40,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (1/1) ... [2024-06-28 03:10:40,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (1/1) ... [2024-06-28 03:10:40,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (1/1) ... [2024-06-28 03:10:40,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (1/1) ... [2024-06-28 03:10:40,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (1/1) ... [2024-06-28 03:10:40,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (1/1) ... [2024-06-28 03:10:40,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:10:40,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:10:40,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:10:40,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:10:40,735 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (1/1) ... [2024-06-28 03:10:40,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:10:40,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:10:40,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:10:40,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:10:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:10:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:10:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:10:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:10:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:10:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:10:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:10:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:10:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:10:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:10:40,821 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:10:40,962 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:10:40,965 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:10:41,264 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:10:41,264 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:10:41,451 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:10:41,451 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:10:41,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:10:41 BoogieIcfgContainer [2024-06-28 03:10:41,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:10:41,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:10:41,455 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:10:41,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:10:41,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:10:38" (1/4) ... [2024-06-28 03:10:41,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdc14e3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:10:41, skipping insertion in model container [2024-06-28 03:10:41,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:10:39" (2/4) ... [2024-06-28 03:10:41,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdc14e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:10:41, skipping insertion in model container [2024-06-28 03:10:41,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:40" (3/4) ... [2024-06-28 03:10:41,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdc14e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:10:41, skipping insertion in model container [2024-06-28 03:10:41,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:10:41" (4/4) ... [2024-06-28 03:10:41,468 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_tso.i [2024-06-28 03:10:41,485 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:10:41,485 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:10:41,485 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:10:41,528 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:10:41,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 03:10:41,598 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-28 03:10:41,599 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:10:41,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:10:41,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 03:10:41,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-28 03:10:41,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:10:41,634 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;@4a1563ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:10:41,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:10:41,639 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:10:41,640 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:10:41,640 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:10:41,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:41,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:10:41,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:41,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:41,646 INFO L85 PathProgramCache]: Analyzing trace with hash 364174474, now seen corresponding path program 1 times [2024-06-28 03:10:41,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:41,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163907087] [2024-06-28 03:10:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:41,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:42,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:42,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163907087] [2024-06-28 03:10:42,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163907087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:42,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:42,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:10:42,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195177400] [2024-06-28 03:10:42,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:42,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:10:42,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:42,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:10:42,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:10:42,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-28 03:10:42,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:42,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:42,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-28 03:10:42,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:42,830 INFO L124 PetriNetUnfolderBase]: 162/306 cut-off events. [2024-06-28 03:10:42,830 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 03:10:42,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 306 events. 162/306 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1111 event pairs, 97 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-06-28 03:10:42,837 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-28 03:10:42,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 113 flow [2024-06-28 03:10:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:10:42,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:10:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-06-28 03:10:42,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 03:10:42,851 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 50 transitions. [2024-06-28 03:10:42,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 113 flow [2024-06-28 03:10:42,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:10:42,856 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-28 03:10:42,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-28 03:10:42,861 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-28 03:10:42,862 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-28 03:10:42,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:42,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:42,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:42,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:10:42,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:42,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:42,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2079351977, now seen corresponding path program 1 times [2024-06-28 03:10:42,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:42,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721290633] [2024-06-28 03:10:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:42,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:43,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:43,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721290633] [2024-06-28 03:10:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721290633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:43,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:43,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:10:43,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107213130] [2024-06-28 03:10:43,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:43,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:10:43,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:43,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:10:43,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:10:43,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 03:10:43,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:43,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:43,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 03:10:43,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:43,470 INFO L124 PetriNetUnfolderBase]: 186/336 cut-off events. [2024-06-28 03:10:43,470 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-28 03:10:43,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 336 events. 186/336 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1173 event pairs, 94 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 766. Up to 319 conditions per place. [2024-06-28 03:10:43,474 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 26 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-28 03:10:43,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 157 flow [2024-06-28 03:10:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:10:43,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:10:43,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-06-28 03:10:43,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-28 03:10:43,476 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 61 transitions. [2024-06-28 03:10:43,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 157 flow [2024-06-28 03:10:43,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:10:43,478 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-28 03:10:43,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-28 03:10:43,480 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-28 03:10:43,480 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-28 03:10:43,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:43,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:43,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:43,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:10:43,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:43,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash 35402953, now seen corresponding path program 1 times [2024-06-28 03:10:43,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:43,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591829578] [2024-06-28 03:10:43,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:43,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:43,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:43,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591829578] [2024-06-28 03:10:43,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591829578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:43,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:43,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:10:43,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502446666] [2024-06-28 03:10:43,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:43,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:10:43,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:10:43,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:10:43,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 03:10:43,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:43,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:43,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 03:10:43,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:44,099 INFO L124 PetriNetUnfolderBase]: 180/326 cut-off events. [2024-06-28 03:10:44,100 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-28 03:10:44,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 326 events. 180/326 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1108 event pairs, 52 based on Foata normal form. 4/329 useless extension candidates. Maximal degree in co-relation 822. Up to 291 conditions per place. [2024-06-28 03:10:44,102 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-28 03:10:44,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 209 flow [2024-06-28 03:10:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:10:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:10:44,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-06-28 03:10:44,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:10:44,105 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 75 transitions. [2024-06-28 03:10:44,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 209 flow [2024-06-28 03:10:44,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:10:44,108 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 117 flow [2024-06-28 03:10:44,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-06-28 03:10:44,110 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-06-28 03:10:44,110 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 117 flow [2024-06-28 03:10:44,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:44,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:44,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:44,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:10:44,111 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:44,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:44,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2055807826, now seen corresponding path program 1 times [2024-06-28 03:10:44,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:44,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421404410] [2024-06-28 03:10:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:44,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:45,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:45,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421404410] [2024-06-28 03:10:45,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421404410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:45,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:45,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:45,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549344004] [2024-06-28 03:10:45,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:45,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:45,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:45,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 03:10:45,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:45,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:45,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 03:10:45,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:45,303 INFO L124 PetriNetUnfolderBase]: 176/318 cut-off events. [2024-06-28 03:10:45,304 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-28 03:10:45,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 318 events. 176/318 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1063 event pairs, 30 based on Foata normal form. 4/321 useless extension candidates. Maximal degree in co-relation 873. Up to 265 conditions per place. [2024-06-28 03:10:45,308 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-28 03:10:45,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 223 flow [2024-06-28 03:10:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:45,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-28 03:10:45,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 03:10:45,313 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 117 flow. Second operand 6 states and 83 transitions. [2024-06-28 03:10:45,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 223 flow [2024-06-28 03:10:45,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 208 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 03:10:45,316 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 114 flow [2024-06-28 03:10:45,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-28 03:10:45,318 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-28 03:10:45,318 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 114 flow [2024-06-28 03:10:45,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:45,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:45,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:45,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:10:45,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:45,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:45,320 INFO L85 PathProgramCache]: Analyzing trace with hash -955188088, now seen corresponding path program 1 times [2024-06-28 03:10:45,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:45,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107639195] [2024-06-28 03:10:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:45,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:45,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:45,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107639195] [2024-06-28 03:10:45,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107639195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:45,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:45,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:10:45,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916875507] [2024-06-28 03:10:45,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:45,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:10:45,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:45,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:10:45,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:10:45,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:45,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) [2024-06-28 03:10:45,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:45,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:45,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:46,127 INFO L124 PetriNetUnfolderBase]: 147/282 cut-off events. [2024-06-28 03:10:46,128 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-28 03:10:46,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 282 events. 147/282 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 986 event pairs, 53 based on Foata normal form. 1/282 useless extension candidates. Maximal degree in co-relation 792. Up to 259 conditions per place. [2024-06-28 03:10:46,130 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 24 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2024-06-28 03:10:46,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 204 flow [2024-06-28 03:10:46,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:46,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-28 03:10:46,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 03:10:46,136 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 114 flow. Second operand 6 states and 65 transitions. [2024-06-28 03:10:46,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 204 flow [2024-06-28 03:10:46,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 182 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:46,141 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 138 flow [2024-06-28 03:10:46,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-28 03:10:46,143 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-06-28 03:10:46,146 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 138 flow [2024-06-28 03:10:46,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) [2024-06-28 03:10:46,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:46,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:46,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:10:46,152 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)] === [2024-06-28 03:10:46,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:46,153 INFO L85 PathProgramCache]: Analyzing trace with hash 453941276, now seen corresponding path program 1 times [2024-06-28 03:10:46,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:46,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497094197] [2024-06-28 03:10:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:46,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:46,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:46,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497094197] [2024-06-28 03:10:46,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497094197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:46,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:46,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:46,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709344942] [2024-06-28 03:10:46,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:46,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:46,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:46,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:46,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:47,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:47,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:47,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:47,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:47,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:47,183 INFO L124 PetriNetUnfolderBase]: 145/279 cut-off events. [2024-06-28 03:10:47,184 INFO L125 PetriNetUnfolderBase]: For 478/478 co-relation queries the response was YES. [2024-06-28 03:10:47,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 279 events. 145/279 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 967 event pairs, 52 based on Foata normal form. 1/279 useless extension candidates. Maximal degree in co-relation 825. Up to 253 conditions per place. [2024-06-28 03:10:47,186 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 26 selfloop transitions, 9 changer transitions 0/38 dead transitions. [2024-06-28 03:10:47,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 228 flow [2024-06-28 03:10:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:47,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-06-28 03:10:47,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-28 03:10:47,187 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 138 flow. Second operand 6 states and 67 transitions. [2024-06-28 03:10:47,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 228 flow [2024-06-28 03:10:47,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 215 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:10:47,190 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 160 flow [2024-06-28 03:10:47,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-28 03:10:47,190 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-28 03:10:47,191 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 160 flow [2024-06-28 03:10:47,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:47,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:47,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:47,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:10:47,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:47,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash 876794845, now seen corresponding path program 1 times [2024-06-28 03:10:47,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:47,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582277590] [2024-06-28 03:10:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:47,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:47,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582277590] [2024-06-28 03:10:47,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582277590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:47,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:47,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:47,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771179425] [2024-06-28 03:10:47,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:47,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:47,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:47,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:47,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:47,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:47,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2024-06-28 03:10:47,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:47,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:47,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:47,943 INFO L124 PetriNetUnfolderBase]: 173/314 cut-off events. [2024-06-28 03:10:47,943 INFO L125 PetriNetUnfolderBase]: For 746/746 co-relation queries the response was YES. [2024-06-28 03:10:47,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 314 events. 173/314 cut-off events. For 746/746 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1048 event pairs, 62 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 1015. Up to 294 conditions per place. [2024-06-28 03:10:47,946 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 9 changer transitions 0/43 dead transitions. [2024-06-28 03:10:47,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 272 flow [2024-06-28 03:10:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:47,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-28 03:10:47,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 03:10:47,947 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 160 flow. Second operand 6 states and 65 transitions. [2024-06-28 03:10:47,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 272 flow [2024-06-28 03:10:47,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 253 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:47,951 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 176 flow [2024-06-28 03:10:47,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-28 03:10:47,953 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-28 03:10:47,953 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 176 flow [2024-06-28 03:10:47,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2024-06-28 03:10:47,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:47,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:47,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:10:47,954 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:47,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:47,955 INFO L85 PathProgramCache]: Analyzing trace with hash 882508765, now seen corresponding path program 2 times [2024-06-28 03:10:47,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:47,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85970904] [2024-06-28 03:10:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:47,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:48,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:48,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85970904] [2024-06-28 03:10:48,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85970904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:48,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:48,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:48,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159486522] [2024-06-28 03:10:48,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:48,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:48,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:48,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:48,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:48,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:48,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2024-06-28 03:10:48,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:48,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:48,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:48,700 INFO L124 PetriNetUnfolderBase]: 171/312 cut-off events. [2024-06-28 03:10:48,701 INFO L125 PetriNetUnfolderBase]: For 964/966 co-relation queries the response was YES. [2024-06-28 03:10:48,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 312 events. 171/312 cut-off events. For 964/966 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1052 event pairs, 65 based on Foata normal form. 3/314 useless extension candidates. Maximal degree in co-relation 1064. Up to 285 conditions per place. [2024-06-28 03:10:48,703 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 30 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2024-06-28 03:10:48,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 286 flow [2024-06-28 03:10:48,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-28 03:10:48,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 03:10:48,705 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 176 flow. Second operand 6 states and 64 transitions. [2024-06-28 03:10:48,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 286 flow [2024-06-28 03:10:48,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 267 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:48,708 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 200 flow [2024-06-28 03:10:48,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-28 03:10:48,708 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-28 03:10:48,709 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 200 flow [2024-06-28 03:10:48,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2024-06-28 03:10:48,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:48,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:48,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:10:48,709 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:48,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:48,710 INFO L85 PathProgramCache]: Analyzing trace with hash -88469237, now seen corresponding path program 1 times [2024-06-28 03:10:48,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:48,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131665223] [2024-06-28 03:10:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:48,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:49,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:49,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131665223] [2024-06-28 03:10:49,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131665223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:49,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:49,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:49,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853220412] [2024-06-28 03:10:49,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:49,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:49,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:49,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:49,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:49,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:49,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-28 03:10:49,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:49,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:49,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:49,535 INFO L124 PetriNetUnfolderBase]: 177/321 cut-off events. [2024-06-28 03:10:49,535 INFO L125 PetriNetUnfolderBase]: For 1264/1264 co-relation queries the response was YES. [2024-06-28 03:10:49,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 321 events. 177/321 cut-off events. For 1264/1264 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1079 event pairs, 43 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 1161. Up to 280 conditions per place. [2024-06-28 03:10:49,538 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 39 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2024-06-28 03:10:49,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 358 flow [2024-06-28 03:10:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:10:49,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-28 03:10:49,539 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 200 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:10:49,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 358 flow [2024-06-28 03:10:49,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 331 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:49,542 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 231 flow [2024-06-28 03:10:49,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-06-28 03:10:49,543 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2024-06-28 03:10:49,543 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 231 flow [2024-06-28 03:10:49,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-28 03:10:49,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:49,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:49,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:10:49,544 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:49,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:49,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1410837351, now seen corresponding path program 1 times [2024-06-28 03:10:49,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:49,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104958929] [2024-06-28 03:10:49,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:49,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:50,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:50,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104958929] [2024-06-28 03:10:50,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104958929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:50,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:50,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:50,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984790540] [2024-06-28 03:10:50,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:50,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:50,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:50,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:50,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:50,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:50,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 231 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-28 03:10:50,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:50,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:50,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:50,478 INFO L124 PetriNetUnfolderBase]: 180/326 cut-off events. [2024-06-28 03:10:50,478 INFO L125 PetriNetUnfolderBase]: For 1565/1565 co-relation queries the response was YES. [2024-06-28 03:10:50,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 326 events. 180/326 cut-off events. For 1565/1565 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1105 event pairs, 42 based on Foata normal form. 1/326 useless extension candidates. Maximal degree in co-relation 1279. Up to 303 conditions per place. [2024-06-28 03:10:50,481 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 39 selfloop transitions, 11 changer transitions 0/52 dead transitions. [2024-06-28 03:10:50,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 365 flow [2024-06-28 03:10:50,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:50,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-28 03:10:50,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3476190476190476 [2024-06-28 03:10:50,483 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 231 flow. Second operand 7 states and 73 transitions. [2024-06-28 03:10:50,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 365 flow [2024-06-28 03:10:50,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 344 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:10:50,486 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 251 flow [2024-06-28 03:10:50,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-06-28 03:10:50,487 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-28 03:10:50,487 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 251 flow [2024-06-28 03:10:50,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-28 03:10:50,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:50,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:50,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:10:50,488 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:50,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:50,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1410837165, now seen corresponding path program 2 times [2024-06-28 03:10:50,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:50,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425555706] [2024-06-28 03:10:50,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:50,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:51,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:51,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:51,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425555706] [2024-06-28 03:10:51,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425555706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:51,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:51,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:51,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047857509] [2024-06-28 03:10:51,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:51,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:51,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:51,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:51,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:51,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:51,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 251 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-28 03:10:51,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:51,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:51,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:51,351 INFO L124 PetriNetUnfolderBase]: 191/344 cut-off events. [2024-06-28 03:10:51,352 INFO L125 PetriNetUnfolderBase]: For 1999/1999 co-relation queries the response was YES. [2024-06-28 03:10:51,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 344 events. 191/344 cut-off events. For 1999/1999 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1181 event pairs, 42 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1424. Up to 290 conditions per place. [2024-06-28 03:10:51,355 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 40 selfloop transitions, 17 changer transitions 0/59 dead transitions. [2024-06-28 03:10:51,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 451 flow [2024-06-28 03:10:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:51,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-28 03:10:51,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-28 03:10:51,357 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 251 flow. Second operand 7 states and 79 transitions. [2024-06-28 03:10:51,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 451 flow [2024-06-28 03:10:51,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 426 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:10:51,361 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 301 flow [2024-06-28 03:10:51,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=301, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-28 03:10:51,362 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-28 03:10:51,362 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 301 flow [2024-06-28 03:10:51,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-28 03:10:51,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:51,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:51,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:10:51,363 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:51,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1849076037, now seen corresponding path program 2 times [2024-06-28 03:10:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:51,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883541784] [2024-06-28 03:10:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:51,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:52,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:52,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883541784] [2024-06-28 03:10:52,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883541784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:52,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:52,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:52,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272689466] [2024-06-28 03:10:52,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:52,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:52,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:52,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:52,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:52,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:52,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-28 03:10:52,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:52,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:52,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:52,342 INFO L124 PetriNetUnfolderBase]: 194/350 cut-off events. [2024-06-28 03:10:52,343 INFO L125 PetriNetUnfolderBase]: For 2455/2455 co-relation queries the response was YES. [2024-06-28 03:10:52,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 350 events. 194/350 cut-off events. For 2455/2455 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1203 event pairs, 46 based on Foata normal form. 1/350 useless extension candidates. Maximal degree in co-relation 1528. Up to 310 conditions per place. [2024-06-28 03:10:52,346 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 39 selfloop transitions, 20 changer transitions 0/61 dead transitions. [2024-06-28 03:10:52,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 502 flow [2024-06-28 03:10:52,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:52,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:52,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-28 03:10:52,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 03:10:52,348 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 301 flow. Second operand 8 states and 81 transitions. [2024-06-28 03:10:52,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 502 flow [2024-06-28 03:10:52,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 478 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:10:52,353 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 387 flow [2024-06-28 03:10:52,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=387, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-06-28 03:10:52,354 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-28 03:10:52,354 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 387 flow [2024-06-28 03:10:52,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-28 03:10:52,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:52,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:52,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:10:52,355 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:52,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1587968871, now seen corresponding path program 3 times [2024-06-28 03:10:52,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:52,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84247070] [2024-06-28 03:10:52,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:52,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:53,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:53,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:53,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84247070] [2024-06-28 03:10:53,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84247070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:53,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:53,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:53,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45433654] [2024-06-28 03:10:53,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:53,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:53,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:53,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:53,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:53,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:53,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 387 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-28 03:10:53,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:53,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:53,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:53,419 INFO L124 PetriNetUnfolderBase]: 192/347 cut-off events. [2024-06-28 03:10:53,419 INFO L125 PetriNetUnfolderBase]: For 2779/2779 co-relation queries the response was YES. [2024-06-28 03:10:53,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1631 conditions, 347 events. 192/347 cut-off events. For 2779/2779 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1189 event pairs, 46 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 1600. Up to 317 conditions per place. [2024-06-28 03:10:53,423 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 45 selfloop transitions, 14 changer transitions 0/61 dead transitions. [2024-06-28 03:10:53,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 61 transitions, 526 flow [2024-06-28 03:10:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-28 03:10:53,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34285714285714286 [2024-06-28 03:10:53,424 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 387 flow. Second operand 7 states and 72 transitions. [2024-06-28 03:10:53,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 61 transitions, 526 flow [2024-06-28 03:10:53,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 61 transitions, 499 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 03:10:53,430 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 402 flow [2024-06-28 03:10:53,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=402, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-28 03:10:53,430 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-28 03:10:53,431 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 402 flow [2024-06-28 03:10:53,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-28 03:10:53,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:53,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:53,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:10:53,431 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:53,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1849313373, now seen corresponding path program 3 times [2024-06-28 03:10:53,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:53,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281624003] [2024-06-28 03:10:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:53,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:54,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:54,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281624003] [2024-06-28 03:10:54,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281624003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:54,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:54,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:54,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436068045] [2024-06-28 03:10:54,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:54,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:54,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:54,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:54,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:54,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:54,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 402 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-28 03:10:54,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:54,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:54,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:54,270 INFO L124 PetriNetUnfolderBase]: 188/341 cut-off events. [2024-06-28 03:10:54,271 INFO L125 PetriNetUnfolderBase]: For 3110/3110 co-relation queries the response was YES. [2024-06-28 03:10:54,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 341 events. 188/341 cut-off events. For 3110/3110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1169 event pairs, 50 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 1587. Up to 274 conditions per place. [2024-06-28 03:10:54,274 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 45 selfloop transitions, 20 changer transitions 0/67 dead transitions. [2024-06-28 03:10:54,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 67 transitions, 606 flow [2024-06-28 03:10:54,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:54,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:10:54,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-28 03:10:54,275 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 402 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:10:54,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 67 transitions, 606 flow [2024-06-28 03:10:54,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 577 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:10:54,281 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 442 flow [2024-06-28 03:10:54,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-06-28 03:10:54,282 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-28 03:10:54,282 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 442 flow [2024-06-28 03:10:54,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-28 03:10:54,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:54,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:54,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:10:54,283 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:54,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:54,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1849067109, now seen corresponding path program 1 times [2024-06-28 03:10:54,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:54,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273806176] [2024-06-28 03:10:54,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:54,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:55,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:55,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273806176] [2024-06-28 03:10:55,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273806176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:55,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:55,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:55,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007951771] [2024-06-28 03:10:55,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:55,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:55,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:55,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:55,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:55,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:55,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 442 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:55,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:55,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:55,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:55,393 INFO L124 PetriNetUnfolderBase]: 186/337 cut-off events. [2024-06-28 03:10:55,394 INFO L125 PetriNetUnfolderBase]: For 3369/3369 co-relation queries the response was YES. [2024-06-28 03:10:55,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 337 events. 186/337 cut-off events. For 3369/3369 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1145 event pairs, 41 based on Foata normal form. 1/337 useless extension candidates. Maximal degree in co-relation 1640. Up to 317 conditions per place. [2024-06-28 03:10:55,397 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 51 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2024-06-28 03:10:55,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 592 flow [2024-06-28 03:10:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:55,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-28 03:10:55,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380952380952381 [2024-06-28 03:10:55,398 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 442 flow. Second operand 7 states and 71 transitions. [2024-06-28 03:10:55,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 592 flow [2024-06-28 03:10:55,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 539 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 03:10:55,404 INFO L231 Difference]: Finished difference. Result has 74 places, 59 transitions, 433 flow [2024-06-28 03:10:55,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=74, PETRI_TRANSITIONS=59} [2024-06-28 03:10:55,407 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-28 03:10:55,407 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 59 transitions, 433 flow [2024-06-28 03:10:55,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:55,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:55,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:55,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:10:55,408 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:55,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:55,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1071863754, now seen corresponding path program 1 times [2024-06-28 03:10:55,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:55,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111364232] [2024-06-28 03:10:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:55,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:56,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:56,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111364232] [2024-06-28 03:10:56,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111364232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:56,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:56,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:56,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114421218] [2024-06-28 03:10:56,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:56,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:56,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:56,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:56,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:56,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:56,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 59 transitions, 433 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:56,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:56,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:56,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:56,654 INFO L124 PetriNetUnfolderBase]: 184/334 cut-off events. [2024-06-28 03:10:56,654 INFO L125 PetriNetUnfolderBase]: For 3507/3507 co-relation queries the response was YES. [2024-06-28 03:10:56,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 334 events. 184/334 cut-off events. For 3507/3507 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1136 event pairs, 40 based on Foata normal form. 1/334 useless extension candidates. Maximal degree in co-relation 1617. Up to 290 conditions per place. [2024-06-28 03:10:56,657 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 54 selfloop transitions, 15 changer transitions 0/71 dead transitions. [2024-06-28 03:10:56,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 605 flow [2024-06-28 03:10:56,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:56,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:56,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:10:56,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-28 03:10:56,659 INFO L175 Difference]: Start difference. First operand has 74 places, 59 transitions, 433 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:10:56,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 605 flow [2024-06-28 03:10:56,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 554 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:56,665 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 420 flow [2024-06-28 03:10:56,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=420, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2024-06-28 03:10:56,665 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-28 03:10:56,666 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 420 flow [2024-06-28 03:10:56,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:56,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:56,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:56,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:10:56,667 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:56,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:56,667 INFO L85 PathProgramCache]: Analyzing trace with hash 782561017, now seen corresponding path program 1 times [2024-06-28 03:10:56,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:56,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744221572] [2024-06-28 03:10:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:56,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:57,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:57,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744221572] [2024-06-28 03:10:57,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744221572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:57,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:57,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:57,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421600803] [2024-06-28 03:10:57,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:57,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:57,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:57,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:57,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:57,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:57,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 420 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:57,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:57,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:57,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:57,661 INFO L124 PetriNetUnfolderBase]: 190/344 cut-off events. [2024-06-28 03:10:57,661 INFO L125 PetriNetUnfolderBase]: For 4052/4052 co-relation queries the response was YES. [2024-06-28 03:10:57,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1711 conditions, 344 events. 190/344 cut-off events. For 4052/4052 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1192 event pairs, 39 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1675. Up to 295 conditions per place. [2024-06-28 03:10:57,664 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 58 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2024-06-28 03:10:57,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 628 flow [2024-06-28 03:10:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:10:57,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-28 03:10:57,667 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 420 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:10:57,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 628 flow [2024-06-28 03:10:57,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 593 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:57,673 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 442 flow [2024-06-28 03:10:57,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=442, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-06-28 03:10:57,674 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-28 03:10:57,674 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 442 flow [2024-06-28 03:10:57,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:57,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:57,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:57,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:10:57,675 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:57,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:57,675 INFO L85 PathProgramCache]: Analyzing trace with hash 786280087, now seen corresponding path program 2 times [2024-06-28 03:10:57,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:57,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211956111] [2024-06-28 03:10:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:57,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:58,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:58,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211956111] [2024-06-28 03:10:58,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211956111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:58,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:58,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:58,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877103612] [2024-06-28 03:10:58,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:58,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:58,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:58,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:58,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:58,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:58,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 442 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:58,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:58,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:58,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:58,739 INFO L124 PetriNetUnfolderBase]: 196/354 cut-off events. [2024-06-28 03:10:58,740 INFO L125 PetriNetUnfolderBase]: For 4593/4593 co-relation queries the response was YES. [2024-06-28 03:10:58,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1820 conditions, 354 events. 196/354 cut-off events. For 4593/4593 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1240 event pairs, 39 based on Foata normal form. 2/355 useless extension candidates. Maximal degree in co-relation 1783. Up to 293 conditions per place. [2024-06-28 03:10:58,743 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 55 selfloop transitions, 19 changer transitions 0/76 dead transitions. [2024-06-28 03:10:58,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 76 transitions, 648 flow [2024-06-28 03:10:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:58,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:10:58,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-28 03:10:58,744 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 442 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:10:58,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 76 transitions, 648 flow [2024-06-28 03:10:58,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 607 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:58,752 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 468 flow [2024-06-28 03:10:58,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=468, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-06-28 03:10:58,753 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-06-28 03:10:58,753 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 468 flow [2024-06-28 03:10:58,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:58,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:58,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:58,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:10:58,755 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:58,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash 786285667, now seen corresponding path program 3 times [2024-06-28 03:10:58,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:58,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842469318] [2024-06-28 03:10:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:58,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:59,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:59,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842469318] [2024-06-28 03:10:59,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842469318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:59,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:59,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:59,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609502048] [2024-06-28 03:10:59,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:59,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:59,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:59,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:59,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:59,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:10:59,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 468 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:59,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:59,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:10:59,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:59,672 INFO L124 PetriNetUnfolderBase]: 202/364 cut-off events. [2024-06-28 03:10:59,672 INFO L125 PetriNetUnfolderBase]: For 5257/5257 co-relation queries the response was YES. [2024-06-28 03:10:59,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 364 events. 202/364 cut-off events. For 5257/5257 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1280 event pairs, 43 based on Foata normal form. 2/365 useless extension candidates. Maximal degree in co-relation 1886. Up to 335 conditions per place. [2024-06-28 03:10:59,675 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 59 selfloop transitions, 14 changer transitions 0/75 dead transitions. [2024-06-28 03:10:59,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 664 flow [2024-06-28 03:10:59,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:59,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-28 03:10:59,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-28 03:10:59,677 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 468 flow. Second operand 8 states and 82 transitions. [2024-06-28 03:10:59,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 664 flow [2024-06-28 03:10:59,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 613 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:59,684 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 478 flow [2024-06-28 03:10:59,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=478, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2024-06-28 03:10:59,685 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-28 03:10:59,686 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 478 flow [2024-06-28 03:10:59,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:59,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:59,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:59,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:10:59,686 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:59,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:59,687 INFO L85 PathProgramCache]: Analyzing trace with hash 786285884, now seen corresponding path program 1 times [2024-06-28 03:10:59,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:59,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102093908] [2024-06-28 03:10:59,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:59,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:00,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:00,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102093908] [2024-06-28 03:11:00,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102093908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:00,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:00,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:00,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535874064] [2024-06-28 03:11:00,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:00,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:00,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:00,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:00,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:00,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:00,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 478 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:00,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:00,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:00,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:00,685 INFO L124 PetriNetUnfolderBase]: 205/369 cut-off events. [2024-06-28 03:11:00,686 INFO L125 PetriNetUnfolderBase]: For 5507/5507 co-relation queries the response was YES. [2024-06-28 03:11:00,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 369 events. 205/369 cut-off events. For 5507/5507 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1292 event pairs, 42 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1935. Up to 343 conditions per place. [2024-06-28 03:11:00,688 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 60 selfloop transitions, 14 changer transitions 0/76 dead transitions. [2024-06-28 03:11:00,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 76 transitions, 664 flow [2024-06-28 03:11:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:00,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-28 03:11:00,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 03:11:00,690 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 478 flow. Second operand 8 states and 81 transitions. [2024-06-28 03:11:00,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 76 transitions, 664 flow [2024-06-28 03:11:00,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 76 transitions, 619 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:00,699 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 486 flow [2024-06-28 03:11:00,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=486, PETRI_PLACES=83, PETRI_TRANSITIONS=67} [2024-06-28 03:11:00,699 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-28 03:11:00,699 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 486 flow [2024-06-28 03:11:00,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:00,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:00,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:00,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:11:00,700 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:00,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1990014268, now seen corresponding path program 2 times [2024-06-28 03:11:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404463899] [2024-06-28 03:11:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:00,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:01,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:01,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404463899] [2024-06-28 03:11:01,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404463899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:01,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:01,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:01,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502044971] [2024-06-28 03:11:01,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:01,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:01,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:01,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:01,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:01,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:01,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 486 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:01,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:01,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:01,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:01,821 INFO L124 PetriNetUnfolderBase]: 211/379 cut-off events. [2024-06-28 03:11:01,822 INFO L125 PetriNetUnfolderBase]: For 6151/6151 co-relation queries the response was YES. [2024-06-28 03:11:01,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 379 events. 211/379 cut-off events. For 6151/6151 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1334 event pairs, 42 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 2016. Up to 351 conditions per place. [2024-06-28 03:11:01,824 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 61 selfloop transitions, 14 changer transitions 0/77 dead transitions. [2024-06-28 03:11:01,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 676 flow [2024-06-28 03:11:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:01,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:01,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-28 03:11:01,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:11:01,825 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 486 flow. Second operand 8 states and 80 transitions. [2024-06-28 03:11:01,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 676 flow [2024-06-28 03:11:01,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 77 transitions, 639 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:01,834 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 505 flow [2024-06-28 03:11:01,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=505, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-06-28 03:11:01,835 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-28 03:11:01,835 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 505 flow [2024-06-28 03:11:01,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:01,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:01,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:01,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:11:01,835 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:01,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1989747141, now seen corresponding path program 4 times [2024-06-28 03:11:01,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:01,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19301961] [2024-06-28 03:11:01,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:01,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:02,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:02,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19301961] [2024-06-28 03:11:02,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19301961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:02,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:02,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:02,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311006380] [2024-06-28 03:11:02,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:02,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:02,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:02,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:02,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:02,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:02,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 505 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:02,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:02,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:02,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:02,888 INFO L124 PetriNetUnfolderBase]: 227/406 cut-off events. [2024-06-28 03:11:02,888 INFO L125 PetriNetUnfolderBase]: For 7446/7446 co-relation queries the response was YES. [2024-06-28 03:11:02,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2294 conditions, 406 events. 227/406 cut-off events. For 7446/7446 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1473 event pairs, 46 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 2253. Up to 346 conditions per place. [2024-06-28 03:11:02,891 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 58 selfloop transitions, 23 changer transitions 0/83 dead transitions. [2024-06-28 03:11:02,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 791 flow [2024-06-28 03:11:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:02,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 03:11:02,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 03:11:02,893 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 505 flow. Second operand 8 states and 85 transitions. [2024-06-28 03:11:02,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 791 flow [2024-06-28 03:11:02,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 755 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:02,904 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 580 flow [2024-06-28 03:11:02,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=580, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2024-06-28 03:11:02,904 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-28 03:11:02,905 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 580 flow [2024-06-28 03:11:02,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:02,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:02,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:02,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:11:02,906 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:02,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:02,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1989747358, now seen corresponding path program 3 times [2024-06-28 03:11:02,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:02,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159256192] [2024-06-28 03:11:02,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:02,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:03,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:03,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159256192] [2024-06-28 03:11:03,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159256192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:03,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:03,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358803916] [2024-06-28 03:11:03,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:03,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:03,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:03,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:03,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:03,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:03,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 580 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:03,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:03,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:03,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:03,908 INFO L124 PetriNetUnfolderBase]: 233/416 cut-off events. [2024-06-28 03:11:03,908 INFO L125 PetriNetUnfolderBase]: For 8411/8411 co-relation queries the response was YES. [2024-06-28 03:11:03,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2421 conditions, 416 events. 233/416 cut-off events. For 8411/8411 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1536 event pairs, 44 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 2379. Up to 343 conditions per place. [2024-06-28 03:11:03,911 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 60 selfloop transitions, 26 changer transitions 0/88 dead transitions. [2024-06-28 03:11:03,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 876 flow [2024-06-28 03:11:03,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:11:03,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-28 03:11:03,912 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 580 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:11:03,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 876 flow [2024-06-28 03:11:03,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 833 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:03,922 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 642 flow [2024-06-28 03:11:03,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=642, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2024-06-28 03:11:03,923 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-28 03:11:03,923 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 642 flow [2024-06-28 03:11:03,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:03,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:03,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:03,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:11:03,924 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:03,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:03,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1494132986, now seen corresponding path program 4 times [2024-06-28 03:11:03,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:03,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29221605] [2024-06-28 03:11:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:03,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:04,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:04,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29221605] [2024-06-28 03:11:04,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29221605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:04,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:04,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299129681] [2024-06-28 03:11:04,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:04,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:04,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:04,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:04,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:04,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:04,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 642 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:04,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:04,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:04,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:04,985 INFO L124 PetriNetUnfolderBase]: 231/413 cut-off events. [2024-06-28 03:11:04,985 INFO L125 PetriNetUnfolderBase]: For 8539/8539 co-relation queries the response was YES. [2024-06-28 03:11:04,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 413 events. 231/413 cut-off events. For 8539/8539 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1509 event pairs, 46 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 2409. Up to 380 conditions per place. [2024-06-28 03:11:04,989 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 68 selfloop transitions, 16 changer transitions 0/86 dead transitions. [2024-06-28 03:11:04,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 86 transitions, 850 flow [2024-06-28 03:11:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:04,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-28 03:11:04,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:11:04,990 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 642 flow. Second operand 8 states and 80 transitions. [2024-06-28 03:11:04,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 86 transitions, 850 flow [2024-06-28 03:11:05,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 86 transitions, 813 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:05,001 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 670 flow [2024-06-28 03:11:05,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=670, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-06-28 03:11:05,002 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-28 03:11:05,002 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 670 flow [2024-06-28 03:11:05,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:05,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:05,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:05,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:11:05,003 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:05,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:05,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1494133203, now seen corresponding path program 5 times [2024-06-28 03:11:05,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:05,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762716362] [2024-06-28 03:11:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:05,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:05,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762716362] [2024-06-28 03:11:05,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762716362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:05,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:05,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:05,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497339433] [2024-06-28 03:11:05,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:05,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:05,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:05,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:05,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:05,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:05,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 670 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:05,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:05,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:05,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:05,993 INFO L124 PetriNetUnfolderBase]: 227/407 cut-off events. [2024-06-28 03:11:05,993 INFO L125 PetriNetUnfolderBase]: For 8771/8771 co-relation queries the response was YES. [2024-06-28 03:11:05,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 407 events. 227/407 cut-off events. For 8771/8771 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1487 event pairs, 45 based on Foata normal form. 2/408 useless extension candidates. Maximal degree in co-relation 2372. Up to 371 conditions per place. [2024-06-28 03:11:05,997 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 67 selfloop transitions, 18 changer transitions 0/87 dead transitions. [2024-06-28 03:11:05,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 87 transitions, 860 flow [2024-06-28 03:11:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:05,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:05,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-28 03:11:05,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-28 03:11:05,998 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 670 flow. Second operand 9 states and 88 transitions. [2024-06-28 03:11:05,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 87 transitions, 860 flow [2024-06-28 03:11:06,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 87 transitions, 799 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:06,009 INFO L231 Difference]: Finished difference. Result has 98 places, 79 transitions, 650 flow [2024-06-28 03:11:06,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=650, PETRI_PLACES=98, PETRI_TRANSITIONS=79} [2024-06-28 03:11:06,010 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-28 03:11:06,010 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 79 transitions, 650 flow [2024-06-28 03:11:06,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:06,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:06,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:06,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:11:06,011 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:06,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:06,011 INFO L85 PathProgramCache]: Analyzing trace with hash 508137891, now seen corresponding path program 6 times [2024-06-28 03:11:06,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:06,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340024487] [2024-06-28 03:11:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:06,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:06,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:06,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340024487] [2024-06-28 03:11:06,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340024487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:06,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:06,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:06,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375386040] [2024-06-28 03:11:06,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:06,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:06,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:06,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:06,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:06,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:06,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 79 transitions, 650 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:06,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:06,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:06,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:07,027 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-28 03:11:07,027 INFO L125 PetriNetUnfolderBase]: For 9084/9084 co-relation queries the response was YES. [2024-06-28 03:11:07,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2422 conditions, 409 events. 228/409 cut-off events. For 9084/9084 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1498 event pairs, 47 based on Foata normal form. 2/410 useless extension candidates. Maximal degree in co-relation 2375. Up to 335 conditions per place. [2024-06-28 03:11:07,035 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 68 selfloop transitions, 22 changer transitions 0/92 dead transitions. [2024-06-28 03:11:07,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 92 transitions, 894 flow [2024-06-28 03:11:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:07,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:11:07,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 03:11:07,037 INFO L175 Difference]: Start difference. First operand has 98 places, 79 transitions, 650 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:11:07,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 92 transitions, 894 flow [2024-06-28 03:11:07,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 92 transitions, 842 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:07,053 INFO L231 Difference]: Finished difference. Result has 98 places, 81 transitions, 683 flow [2024-06-28 03:11:07,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=683, PETRI_PLACES=98, PETRI_TRANSITIONS=81} [2024-06-28 03:11:07,054 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-28 03:11:07,054 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 81 transitions, 683 flow [2024-06-28 03:11:07,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:07,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:07,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:07,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:11:07,054 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:07,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:07,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1990024188, now seen corresponding path program 1 times [2024-06-28 03:11:07,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:07,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875576363] [2024-06-28 03:11:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:07,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:07,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:07,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875576363] [2024-06-28 03:11:07,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875576363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:07,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:07,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:07,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703542001] [2024-06-28 03:11:07,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:07,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:07,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:07,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:07,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:07,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:07,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 81 transitions, 683 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:07,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:07,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:07,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:08,119 INFO L124 PetriNetUnfolderBase]: 225/403 cut-off events. [2024-06-28 03:11:08,119 INFO L125 PetriNetUnfolderBase]: For 9124/9124 co-relation queries the response was YES. [2024-06-28 03:11:08,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2408 conditions, 403 events. 225/403 cut-off events. For 9124/9124 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1445 event pairs, 43 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 2360. Up to 377 conditions per place. [2024-06-28 03:11:08,122 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 74 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-06-28 03:11:08,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 89 transitions, 875 flow [2024-06-28 03:11:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-06-28 03:11:08,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-28 03:11:08,124 INFO L175 Difference]: Start difference. First operand has 98 places, 81 transitions, 683 flow. Second operand 8 states and 78 transitions. [2024-06-28 03:11:08,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 89 transitions, 875 flow [2024-06-28 03:11:08,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 89 transitions, 806 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:08,134 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 644 flow [2024-06-28 03:11:08,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=644, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-06-28 03:11:08,135 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2024-06-28 03:11:08,135 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 644 flow [2024-06-28 03:11:08,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:08,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:08,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:08,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:11:08,136 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:08,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:08,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1765142870, now seen corresponding path program 1 times [2024-06-28 03:11:08,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:08,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734030864] [2024-06-28 03:11:08,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:08,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:08,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:08,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734030864] [2024-06-28 03:11:08,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734030864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:08,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:08,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:08,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16089912] [2024-06-28 03:11:08,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:08,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:08,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:08,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:08,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:09,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:09,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 644 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:09,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:09,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:09,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:09,290 INFO L124 PetriNetUnfolderBase]: 229/411 cut-off events. [2024-06-28 03:11:09,290 INFO L125 PetriNetUnfolderBase]: For 9641/9641 co-relation queries the response was YES. [2024-06-28 03:11:09,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 411 events. 229/411 cut-off events. For 9641/9641 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1509 event pairs, 24 based on Foata normal form. 2/412 useless extension candidates. Maximal degree in co-relation 2366. Up to 350 conditions per place. [2024-06-28 03:11:09,293 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 81 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2024-06-28 03:11:09,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 882 flow [2024-06-28 03:11:09,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 03:11:09,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:11:09,294 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 644 flow. Second operand 8 states and 84 transitions. [2024-06-28 03:11:09,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 882 flow [2024-06-28 03:11:09,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 96 transitions, 850 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:09,305 INFO L231 Difference]: Finished difference. Result has 102 places, 82 transitions, 658 flow [2024-06-28 03:11:09,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=102, PETRI_TRANSITIONS=82} [2024-06-28 03:11:09,306 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-28 03:11:09,306 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 82 transitions, 658 flow [2024-06-28 03:11:09,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:09,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:09,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:09,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:11:09,306 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:09,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1513212632, now seen corresponding path program 1 times [2024-06-28 03:11:09,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:09,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534620382] [2024-06-28 03:11:09,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:09,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:10,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:10,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534620382] [2024-06-28 03:11:10,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534620382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:10,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:10,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:10,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913166729] [2024-06-28 03:11:10,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:10,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:10,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:10,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:10,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:10,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:10,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 82 transitions, 658 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:10,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:10,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:10,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:10,498 INFO L124 PetriNetUnfolderBase]: 227/408 cut-off events. [2024-06-28 03:11:10,498 INFO L125 PetriNetUnfolderBase]: For 9512/9512 co-relation queries the response was YES. [2024-06-28 03:11:10,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 408 events. 227/408 cut-off events. For 9512/9512 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1490 event pairs, 38 based on Foata normal form. 1/408 useless extension candidates. Maximal degree in co-relation 2342. Up to 353 conditions per place. [2024-06-28 03:11:10,502 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 77 selfloop transitions, 19 changer transitions 0/98 dead transitions. [2024-06-28 03:11:10,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 98 transitions, 926 flow [2024-06-28 03:11:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:11:10,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-28 03:11:10,506 INFO L175 Difference]: Start difference. First operand has 102 places, 82 transitions, 658 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:11:10,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 98 transitions, 926 flow [2024-06-28 03:11:10,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 98 transitions, 890 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:10,517 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 708 flow [2024-06-28 03:11:10,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=708, PETRI_PLACES=104, PETRI_TRANSITIONS=84} [2024-06-28 03:11:10,517 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2024-06-28 03:11:10,517 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 708 flow [2024-06-28 03:11:10,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:10,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:10,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:10,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:11:10,518 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:10,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:10,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1765203320, now seen corresponding path program 2 times [2024-06-28 03:11:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:10,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741182847] [2024-06-28 03:11:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:11,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:11,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741182847] [2024-06-28 03:11:11,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741182847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:11,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:11,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:11,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340307847] [2024-06-28 03:11:11,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:11,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:11,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:11,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:11,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:11,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:11,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 84 transitions, 708 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:11,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:11,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:11,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:11,754 INFO L124 PetriNetUnfolderBase]: 252/455 cut-off events. [2024-06-28 03:11:11,754 INFO L125 PetriNetUnfolderBase]: For 11172/11172 co-relation queries the response was YES. [2024-06-28 03:11:11,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2668 conditions, 455 events. 252/455 cut-off events. For 11172/11172 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1754 event pairs, 41 based on Foata normal form. 2/456 useless extension candidates. Maximal degree in co-relation 2617. Up to 388 conditions per place. [2024-06-28 03:11:11,758 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 85 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-28 03:11:11,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 109 transitions, 1088 flow [2024-06-28 03:11:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:11,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 03:11:11,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-28 03:11:11,760 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 708 flow. Second operand 9 states and 94 transitions. [2024-06-28 03:11:11,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 109 transitions, 1088 flow [2024-06-28 03:11:11,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 109 transitions, 1004 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:11,772 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 827 flow [2024-06-28 03:11:11,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=827, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2024-06-28 03:11:11,773 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-28 03:11:11,773 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 827 flow [2024-06-28 03:11:11,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:11,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:11,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:11,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:11:11,773 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:11,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:11,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1768004790, now seen corresponding path program 1 times [2024-06-28 03:11:11,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:11,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132440649] [2024-06-28 03:11:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:11,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:12,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:12,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132440649] [2024-06-28 03:11:12,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132440649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:12,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:12,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:12,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131058699] [2024-06-28 03:11:12,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:12,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:12,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:12,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:12,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:12,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 827 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:12,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:12,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:12,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:12,842 INFO L124 PetriNetUnfolderBase]: 258/465 cut-off events. [2024-06-28 03:11:12,843 INFO L125 PetriNetUnfolderBase]: For 11381/11381 co-relation queries the response was YES. [2024-06-28 03:11:12,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 465 events. 258/465 cut-off events. For 11381/11381 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1808 event pairs, 37 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2662. Up to 383 conditions per place. [2024-06-28 03:11:12,846 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 86 selfloop transitions, 26 changer transitions 0/114 dead transitions. [2024-06-28 03:11:12,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 1128 flow [2024-06-28 03:11:12,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:11:12,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 03:11:12,847 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 827 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:11:12,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 1128 flow [2024-06-28 03:11:12,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 114 transitions, 1098 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 03:11:12,861 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 886 flow [2024-06-28 03:11:12,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=886, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2024-06-28 03:11:12,862 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-06-28 03:11:12,862 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 886 flow [2024-06-28 03:11:12,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:12,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:12,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:12,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:11:12,863 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:12,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:12,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1883291000, now seen corresponding path program 3 times [2024-06-28 03:11:12,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:12,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302965102] [2024-06-28 03:11:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:12,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:13,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:13,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302965102] [2024-06-28 03:11:13,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302965102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:13,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:13,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:13,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244384799] [2024-06-28 03:11:13,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:13,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:13,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:13,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:13,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:13,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:13,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 886 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:13,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:13,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:13,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:13,945 INFO L124 PetriNetUnfolderBase]: 262/473 cut-off events. [2024-06-28 03:11:13,945 INFO L125 PetriNetUnfolderBase]: For 12304/12304 co-relation queries the response was YES. [2024-06-28 03:11:13,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 473 events. 262/473 cut-off events. For 12304/12304 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1846 event pairs, 38 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 2776. Up to 388 conditions per place. [2024-06-28 03:11:13,950 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 82 selfloop transitions, 27 changer transitions 0/111 dead transitions. [2024-06-28 03:11:13,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 111 transitions, 1154 flow [2024-06-28 03:11:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:11:13,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 03:11:13,952 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 886 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:11:13,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 111 transitions, 1154 flow [2024-06-28 03:11:13,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 111 transitions, 1081 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:13,967 INFO L231 Difference]: Finished difference. Result has 118 places, 99 transitions, 891 flow [2024-06-28 03:11:13,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=891, PETRI_PLACES=118, PETRI_TRANSITIONS=99} [2024-06-28 03:11:13,968 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-06-28 03:11:13,968 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 99 transitions, 891 flow [2024-06-28 03:11:13,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:13,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:13,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:13,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:11:13,969 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:13,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1395120116, now seen corresponding path program 2 times [2024-06-28 03:11:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:13,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372023040] [2024-06-28 03:11:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:13,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:14,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:14,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:14,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372023040] [2024-06-28 03:11:14,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372023040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:14,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:14,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:14,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390363651] [2024-06-28 03:11:14,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:14,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:14,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:14,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:14,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:14,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 99 transitions, 891 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:14,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:14,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:14,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:14,925 INFO L124 PetriNetUnfolderBase]: 283/508 cut-off events. [2024-06-28 03:11:14,925 INFO L125 PetriNetUnfolderBase]: For 13229/13229 co-relation queries the response was YES. [2024-06-28 03:11:14,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 508 events. 283/508 cut-off events. For 13229/13229 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2055 event pairs, 40 based on Foata normal form. 2/509 useless extension candidates. Maximal degree in co-relation 2939. Up to 424 conditions per place. [2024-06-28 03:11:14,930 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 92 selfloop transitions, 28 changer transitions 0/122 dead transitions. [2024-06-28 03:11:14,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 122 transitions, 1257 flow [2024-06-28 03:11:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:14,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:11:14,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:11:14,931 INFO L175 Difference]: Start difference. First operand has 118 places, 99 transitions, 891 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:11:14,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 122 transitions, 1257 flow [2024-06-28 03:11:14,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 122 transitions, 1182 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:14,949 INFO L231 Difference]: Finished difference. Result has 125 places, 107 transitions, 986 flow [2024-06-28 03:11:14,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=986, PETRI_PLACES=125, PETRI_TRANSITIONS=107} [2024-06-28 03:11:14,950 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-28 03:11:14,950 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 107 transitions, 986 flow [2024-06-28 03:11:14,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:14,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:14,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:14,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:11:14,951 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:14,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:14,951 INFO L85 PathProgramCache]: Analyzing trace with hash -956869758, now seen corresponding path program 3 times [2024-06-28 03:11:14,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:14,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948974193] [2024-06-28 03:11:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:14,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:15,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948974193] [2024-06-28 03:11:15,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948974193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:15,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:15,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:15,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615158735] [2024-06-28 03:11:15,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:15,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:15,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:15,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:15,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:15,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:15,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 107 transitions, 986 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:15,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:15,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:15,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:15,879 INFO L124 PetriNetUnfolderBase]: 322/572 cut-off events. [2024-06-28 03:11:15,879 INFO L125 PetriNetUnfolderBase]: For 17634/17634 co-relation queries the response was YES. [2024-06-28 03:11:15,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 572 events. 322/572 cut-off events. For 17634/17634 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2353 event pairs, 49 based on Foata normal form. 4/575 useless extension candidates. Maximal degree in co-relation 3542. Up to 484 conditions per place. [2024-06-28 03:11:15,884 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 102 selfloop transitions, 25 changer transitions 0/129 dead transitions. [2024-06-28 03:11:15,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 129 transitions, 1458 flow [2024-06-28 03:11:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:11:15,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 03:11:15,893 INFO L175 Difference]: Start difference. First operand has 125 places, 107 transitions, 986 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:11:15,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 129 transitions, 1458 flow [2024-06-28 03:11:15,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 129 transitions, 1392 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 03:11:15,916 INFO L231 Difference]: Finished difference. Result has 130 places, 114 transitions, 1099 flow [2024-06-28 03:11:15,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1099, PETRI_PLACES=130, PETRI_TRANSITIONS=114} [2024-06-28 03:11:15,917 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-28 03:11:15,917 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 114 transitions, 1099 flow [2024-06-28 03:11:15,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:15,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:15,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:15,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:11:15,918 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:15,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:15,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1883475698, now seen corresponding path program 1 times [2024-06-28 03:11:15,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:15,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239735497] [2024-06-28 03:11:15,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:15,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:16,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:16,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239735497] [2024-06-28 03:11:16,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239735497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:16,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:16,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:16,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807623589] [2024-06-28 03:11:16,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:16,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:16,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:16,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:16,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:16,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:16,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 114 transitions, 1099 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:16,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:16,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:16,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:17,231 INFO L124 PetriNetUnfolderBase]: 318/565 cut-off events. [2024-06-28 03:11:17,232 INFO L125 PetriNetUnfolderBase]: For 16746/16746 co-relation queries the response was YES. [2024-06-28 03:11:17,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3623 conditions, 565 events. 318/565 cut-off events. For 16746/16746 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2321 event pairs, 56 based on Foata normal form. 1/565 useless extension candidates. Maximal degree in co-relation 3559. Up to 526 conditions per place. [2024-06-28 03:11:17,237 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 102 selfloop transitions, 20 changer transitions 0/124 dead transitions. [2024-06-28 03:11:17,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 124 transitions, 1367 flow [2024-06-28 03:11:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:17,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-28 03:11:17,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-28 03:11:17,239 INFO L175 Difference]: Start difference. First operand has 130 places, 114 transitions, 1099 flow. Second operand 9 states and 89 transitions. [2024-06-28 03:11:17,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 124 transitions, 1367 flow [2024-06-28 03:11:17,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 124 transitions, 1299 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 03:11:17,268 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 1076 flow [2024-06-28 03:11:17,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1076, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2024-06-28 03:11:17,268 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2024-06-28 03:11:17,269 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 1076 flow [2024-06-28 03:11:17,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:17,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:17,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:17,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:11:17,269 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:17,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:17,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1883468940, now seen corresponding path program 4 times [2024-06-28 03:11:17,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:17,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633020426] [2024-06-28 03:11:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:17,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:17,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:17,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633020426] [2024-06-28 03:11:17,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633020426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:17,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:17,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:17,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442695546] [2024-06-28 03:11:17,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:17,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:17,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:17,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:17,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:18,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:18,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 1076 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:18,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:18,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:18,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:18,250 INFO L124 PetriNetUnfolderBase]: 314/559 cut-off events. [2024-06-28 03:11:18,250 INFO L125 PetriNetUnfolderBase]: For 16454/16454 co-relation queries the response was YES. [2024-06-28 03:11:18,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3488 conditions, 559 events. 314/559 cut-off events. For 16454/16454 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2292 event pairs, 50 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3422. Up to 479 conditions per place. [2024-06-28 03:11:18,254 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 101 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2024-06-28 03:11:18,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 130 transitions, 1475 flow [2024-06-28 03:11:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:18,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:18,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:11:18,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-28 03:11:18,255 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 1076 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:11:18,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 130 transitions, 1475 flow [2024-06-28 03:11:18,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 130 transitions, 1420 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:18,281 INFO L231 Difference]: Finished difference. Result has 136 places, 116 transitions, 1119 flow [2024-06-28 03:11:18,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1119, PETRI_PLACES=136, PETRI_TRANSITIONS=116} [2024-06-28 03:11:18,282 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 107 predicate places. [2024-06-28 03:11:18,282 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 116 transitions, 1119 flow [2024-06-28 03:11:18,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:18,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:18,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:18,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:11:18,282 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:18,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:18,283 INFO L85 PathProgramCache]: Analyzing trace with hash 933005186, now seen corresponding path program 5 times [2024-06-28 03:11:18,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:18,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144675553] [2024-06-28 03:11:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:18,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:18,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:18,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144675553] [2024-06-28 03:11:18,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144675553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:18,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:18,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:18,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982753801] [2024-06-28 03:11:18,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:18,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:18,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:18,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:18,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:19,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:19,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 116 transitions, 1119 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:19,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:19,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:19,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:19,282 INFO L124 PetriNetUnfolderBase]: 336/595 cut-off events. [2024-06-28 03:11:19,282 INFO L125 PetriNetUnfolderBase]: For 20259/20259 co-relation queries the response was YES. [2024-06-28 03:11:19,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3850 conditions, 595 events. 336/595 cut-off events. For 20259/20259 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2469 event pairs, 60 based on Foata normal form. 4/598 useless extension candidates. Maximal degree in co-relation 3783. Up to 541 conditions per place. [2024-06-28 03:11:19,286 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 112 selfloop transitions, 19 changer transitions 0/133 dead transitions. [2024-06-28 03:11:19,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 133 transitions, 1583 flow [2024-06-28 03:11:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 03:11:19,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-28 03:11:19,288 INFO L175 Difference]: Start difference. First operand has 136 places, 116 transitions, 1119 flow. Second operand 9 states and 93 transitions. [2024-06-28 03:11:19,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 133 transitions, 1583 flow [2024-06-28 03:11:19,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 133 transitions, 1512 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:19,328 INFO L231 Difference]: Finished difference. Result has 139 places, 121 transitions, 1186 flow [2024-06-28 03:11:19,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1186, PETRI_PLACES=139, PETRI_TRANSITIONS=121} [2024-06-28 03:11:19,328 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-06-28 03:11:19,328 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 121 transitions, 1186 flow [2024-06-28 03:11:19,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:19,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:19,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:19,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:11:19,329 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:19,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:19,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1154419586, now seen corresponding path program 6 times [2024-06-28 03:11:19,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:19,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265306525] [2024-06-28 03:11:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:19,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:20,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:20,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265306525] [2024-06-28 03:11:20,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265306525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:20,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:20,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:20,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151728195] [2024-06-28 03:11:20,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:20,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:20,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:20,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:20,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:20,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:20,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 121 transitions, 1186 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:20,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:20,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:20,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:20,345 INFO L124 PetriNetUnfolderBase]: 388/678 cut-off events. [2024-06-28 03:11:20,345 INFO L125 PetriNetUnfolderBase]: For 26920/26920 co-relation queries the response was YES. [2024-06-28 03:11:20,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 678 events. 388/678 cut-off events. For 26920/26920 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2896 event pairs, 64 based on Foata normal form. 4/681 useless extension candidates. Maximal degree in co-relation 4703. Up to 453 conditions per place. [2024-06-28 03:11:20,352 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 99 selfloop transitions, 45 changer transitions 0/146 dead transitions. [2024-06-28 03:11:20,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 146 transitions, 1922 flow [2024-06-28 03:11:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:20,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:11:20,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 03:11:20,353 INFO L175 Difference]: Start difference. First operand has 139 places, 121 transitions, 1186 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:11:20,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 146 transitions, 1922 flow [2024-06-28 03:11:20,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 146 transitions, 1852 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 03:11:20,407 INFO L231 Difference]: Finished difference. Result has 143 places, 128 transitions, 1356 flow [2024-06-28 03:11:20,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1356, PETRI_PLACES=143, PETRI_TRANSITIONS=128} [2024-06-28 03:11:20,408 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2024-06-28 03:11:20,408 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 128 transitions, 1356 flow [2024-06-28 03:11:20,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:20,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:20,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:20,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:11:20,409 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:20,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:20,409 INFO L85 PathProgramCache]: Analyzing trace with hash 926511926, now seen corresponding path program 7 times [2024-06-28 03:11:20,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:20,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481288583] [2024-06-28 03:11:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:20,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:21,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:21,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481288583] [2024-06-28 03:11:21,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481288583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:21,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:21,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:21,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134846090] [2024-06-28 03:11:21,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:21,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:21,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:21,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:21,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:21,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:21,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 128 transitions, 1356 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:21,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:21,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:21,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:21,310 INFO L124 PetriNetUnfolderBase]: 404/704 cut-off events. [2024-06-28 03:11:21,311 INFO L125 PetriNetUnfolderBase]: For 29223/29223 co-relation queries the response was YES. [2024-06-28 03:11:21,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5165 conditions, 704 events. 404/704 cut-off events. For 29223/29223 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3038 event pairs, 64 based on Foata normal form. 2/705 useless extension candidates. Maximal degree in co-relation 5095. Up to 611 conditions per place. [2024-06-28 03:11:21,318 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 115 selfloop transitions, 29 changer transitions 0/146 dead transitions. [2024-06-28 03:11:21,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 146 transitions, 1940 flow [2024-06-28 03:11:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:11:21,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-28 03:11:21,319 INFO L175 Difference]: Start difference. First operand has 143 places, 128 transitions, 1356 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:11:21,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 146 transitions, 1940 flow [2024-06-28 03:11:21,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 146 transitions, 1832 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:21,369 INFO L231 Difference]: Finished difference. Result has 148 places, 133 transitions, 1427 flow [2024-06-28 03:11:21,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1427, PETRI_PLACES=148, PETRI_TRANSITIONS=133} [2024-06-28 03:11:21,370 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 119 predicate places. [2024-06-28 03:11:21,370 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 133 transitions, 1427 flow [2024-06-28 03:11:21,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:21,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:21,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:21,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:11:21,371 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:21,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:21,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1552620190, now seen corresponding path program 8 times [2024-06-28 03:11:21,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:21,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258652327] [2024-06-28 03:11:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:21,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:22,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:22,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258652327] [2024-06-28 03:11:22,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258652327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:22,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:22,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:22,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368837394] [2024-06-28 03:11:22,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:22,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:22,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:22,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:22,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:22,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:22,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 133 transitions, 1427 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:22,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:22,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:22,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:22,282 INFO L124 PetriNetUnfolderBase]: 400/698 cut-off events. [2024-06-28 03:11:22,282 INFO L125 PetriNetUnfolderBase]: For 28788/28788 co-relation queries the response was YES. [2024-06-28 03:11:22,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4981 conditions, 698 events. 400/698 cut-off events. For 28788/28788 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2999 event pairs, 61 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 4909. Up to 463 conditions per place. [2024-06-28 03:11:22,287 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 96 selfloop transitions, 52 changer transitions 0/150 dead transitions. [2024-06-28 03:11:22,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 150 transitions, 1979 flow [2024-06-28 03:11:22,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:22,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:11:22,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3814814814814815 [2024-06-28 03:11:22,293 INFO L175 Difference]: Start difference. First operand has 148 places, 133 transitions, 1427 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:11:22,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 150 transitions, 1979 flow [2024-06-28 03:11:22,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 150 transitions, 1838 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:22,355 INFO L231 Difference]: Finished difference. Result has 149 places, 135 transitions, 1441 flow [2024-06-28 03:11:22,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1441, PETRI_PLACES=149, PETRI_TRANSITIONS=135} [2024-06-28 03:11:22,356 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2024-06-28 03:11:22,356 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 135 transitions, 1441 flow [2024-06-28 03:11:22,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:22,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:22,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:22,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:11:22,357 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:22,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:22,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1324725798, now seen corresponding path program 2 times [2024-06-28 03:11:22,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:22,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92485650] [2024-06-28 03:11:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:22,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:23,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:23,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92485650] [2024-06-28 03:11:23,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92485650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:23,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:23,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:23,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342350460] [2024-06-28 03:11:23,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:23,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:23,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:23,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:23,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:23,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:23,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 135 transitions, 1441 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:23,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:23,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:23,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:23,221 INFO L124 PetriNetUnfolderBase]: 398/695 cut-off events. [2024-06-28 03:11:23,221 INFO L125 PetriNetUnfolderBase]: For 28145/28145 co-relation queries the response was YES. [2024-06-28 03:11:23,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4917 conditions, 695 events. 398/695 cut-off events. For 28145/28145 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2986 event pairs, 68 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 4846. Up to 653 conditions per place. [2024-06-28 03:11:23,226 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 119 selfloop transitions, 21 changer transitions 0/142 dead transitions. [2024-06-28 03:11:23,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 142 transitions, 1737 flow [2024-06-28 03:11:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-28 03:11:23,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 03:11:23,228 INFO L175 Difference]: Start difference. First operand has 149 places, 135 transitions, 1441 flow. Second operand 8 states and 81 transitions. [2024-06-28 03:11:23,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 142 transitions, 1737 flow [2024-06-28 03:11:23,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 142 transitions, 1603 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:23,284 INFO L231 Difference]: Finished difference. Result has 151 places, 135 transitions, 1355 flow [2024-06-28 03:11:23,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1355, PETRI_PLACES=151, PETRI_TRANSITIONS=135} [2024-06-28 03:11:23,285 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2024-06-28 03:11:23,286 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 135 transitions, 1355 flow [2024-06-28 03:11:23,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:23,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:23,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:23,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:11:23,286 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:23,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:23,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2049114584, now seen corresponding path program 9 times [2024-06-28 03:11:23,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:23,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059604720] [2024-06-28 03:11:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:23,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:23,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:23,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059604720] [2024-06-28 03:11:23,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059604720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:23,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:23,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:23,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071719201] [2024-06-28 03:11:23,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:23,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:23,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:23,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:23,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:23,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:23,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 135 transitions, 1355 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:23,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:23,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:23,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:24,202 INFO L124 PetriNetUnfolderBase]: 390/683 cut-off events. [2024-06-28 03:11:24,202 INFO L125 PetriNetUnfolderBase]: For 28217/28217 co-relation queries the response was YES. [2024-06-28 03:11:24,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4560 conditions, 683 events. 390/683 cut-off events. For 28217/28217 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2940 event pairs, 61 based on Foata normal form. 4/686 useless extension candidates. Maximal degree in co-relation 4488. Up to 600 conditions per place. [2024-06-28 03:11:24,208 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 117 selfloop transitions, 28 changer transitions 0/147 dead transitions. [2024-06-28 03:11:24,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 147 transitions, 1757 flow [2024-06-28 03:11:24,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:24,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:11:24,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 03:11:24,216 INFO L175 Difference]: Start difference. First operand has 151 places, 135 transitions, 1355 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:11:24,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 147 transitions, 1757 flow [2024-06-28 03:11:24,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 147 transitions, 1655 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:24,280 INFO L231 Difference]: Finished difference. Result has 153 places, 135 transitions, 1316 flow [2024-06-28 03:11:24,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1316, PETRI_PLACES=153, PETRI_TRANSITIONS=135} [2024-06-28 03:11:24,286 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 124 predicate places. [2024-06-28 03:11:24,287 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 135 transitions, 1316 flow [2024-06-28 03:11:24,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:24,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:24,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:24,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:11:24,287 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:24,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1324541100, now seen corresponding path program 4 times [2024-06-28 03:11:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:24,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502481591] [2024-06-28 03:11:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:24,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:25,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:25,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502481591] [2024-06-28 03:11:25,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502481591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:25,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:25,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095723135] [2024-06-28 03:11:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:25,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:25,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:25,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:25,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:25,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 135 transitions, 1316 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:25,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:25,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:25,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:25,353 INFO L124 PetriNetUnfolderBase]: 394/693 cut-off events. [2024-06-28 03:11:25,354 INFO L125 PetriNetUnfolderBase]: For 28341/28341 co-relation queries the response was YES. [2024-06-28 03:11:25,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 693 events. 394/693 cut-off events. For 28341/28341 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3015 event pairs, 62 based on Foata normal form. 2/694 useless extension candidates. Maximal degree in co-relation 4517. Up to 588 conditions per place. [2024-06-28 03:11:25,359 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 111 selfloop transitions, 33 changer transitions 0/146 dead transitions. [2024-06-28 03:11:25,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 146 transitions, 1650 flow [2024-06-28 03:11:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:25,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 03:11:25,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 03:11:25,360 INFO L175 Difference]: Start difference. First operand has 153 places, 135 transitions, 1316 flow. Second operand 8 states and 85 transitions. [2024-06-28 03:11:25,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 146 transitions, 1650 flow [2024-06-28 03:11:25,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 146 transitions, 1596 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:25,405 INFO L231 Difference]: Finished difference. Result has 154 places, 136 transitions, 1354 flow [2024-06-28 03:11:25,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1354, PETRI_PLACES=154, PETRI_TRANSITIONS=136} [2024-06-28 03:11:25,406 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2024-06-28 03:11:25,406 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 136 transitions, 1354 flow [2024-06-28 03:11:25,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:25,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:25,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:25,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:11:25,407 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:25,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:25,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1324546060, now seen corresponding path program 10 times [2024-06-28 03:11:25,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:25,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129769182] [2024-06-28 03:11:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:25,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:26,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:26,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129769182] [2024-06-28 03:11:26,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129769182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:26,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:26,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:26,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122835849] [2024-06-28 03:11:26,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:26,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:26,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:26,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:26,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:26,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:26,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 136 transitions, 1354 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:26,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:26,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:26,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:26,288 INFO L124 PetriNetUnfolderBase]: 400/703 cut-off events. [2024-06-28 03:11:26,288 INFO L125 PetriNetUnfolderBase]: For 30076/30076 co-relation queries the response was YES. [2024-06-28 03:11:26,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4731 conditions, 703 events. 400/703 cut-off events. For 30076/30076 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3063 event pairs, 62 based on Foata normal form. 2/704 useless extension candidates. Maximal degree in co-relation 4657. Up to 588 conditions per place. [2024-06-28 03:11:26,293 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 112 selfloop transitions, 36 changer transitions 0/150 dead transitions. [2024-06-28 03:11:26,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 150 transitions, 1734 flow [2024-06-28 03:11:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:11:26,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 03:11:26,294 INFO L175 Difference]: Start difference. First operand has 154 places, 136 transitions, 1354 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:11:26,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 150 transitions, 1734 flow [2024-06-28 03:11:26,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 150 transitions, 1652 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:26,363 INFO L231 Difference]: Finished difference. Result has 157 places, 138 transitions, 1403 flow [2024-06-28 03:11:26,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1403, PETRI_PLACES=157, PETRI_TRANSITIONS=138} [2024-06-28 03:11:26,364 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 128 predicate places. [2024-06-28 03:11:26,364 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 138 transitions, 1403 flow [2024-06-28 03:11:26,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:26,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:26,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:26,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:11:26,365 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:26,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:26,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2104187210, now seen corresponding path program 5 times [2024-06-28 03:11:26,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:26,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383125853] [2024-06-28 03:11:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:26,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:27,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:27,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383125853] [2024-06-28 03:11:27,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383125853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:27,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:27,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71255963] [2024-06-28 03:11:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:27,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:27,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:27,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:27,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:27,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 138 transitions, 1403 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:27,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:27,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:27,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:27,318 INFO L124 PetriNetUnfolderBase]: 421/739 cut-off events. [2024-06-28 03:11:27,319 INFO L125 PetriNetUnfolderBase]: For 31556/31556 co-relation queries the response was YES. [2024-06-28 03:11:27,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4983 conditions, 739 events. 421/739 cut-off events. For 31556/31556 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3279 event pairs, 64 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 4908. Up to 665 conditions per place. [2024-06-28 03:11:27,324 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 134 selfloop transitions, 26 changer transitions 0/162 dead transitions. [2024-06-28 03:11:27,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 162 transitions, 1874 flow [2024-06-28 03:11:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:11:27,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 03:11:27,326 INFO L175 Difference]: Start difference. First operand has 157 places, 138 transitions, 1403 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:11:27,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 162 transitions, 1874 flow [2024-06-28 03:11:27,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 162 transitions, 1745 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:27,379 INFO L231 Difference]: Finished difference. Result has 160 places, 146 transitions, 1453 flow [2024-06-28 03:11:27,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1453, PETRI_PLACES=160, PETRI_TRANSITIONS=146} [2024-06-28 03:11:27,380 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2024-06-28 03:11:27,380 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 146 transitions, 1453 flow [2024-06-28 03:11:27,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:27,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:27,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:27,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:11:27,381 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:27,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:27,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1575320502, now seen corresponding path program 6 times [2024-06-28 03:11:27,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:27,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875238142] [2024-06-28 03:11:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:27,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:28,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:28,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875238142] [2024-06-28 03:11:28,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875238142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:28,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:28,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:28,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630082378] [2024-06-28 03:11:28,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:28,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:28,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:28,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:28,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:28,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:28,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 146 transitions, 1453 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:28,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:28,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:28,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:28,530 INFO L124 PetriNetUnfolderBase]: 418/734 cut-off events. [2024-06-28 03:11:28,530 INFO L125 PetriNetUnfolderBase]: For 30704/30704 co-relation queries the response was YES. [2024-06-28 03:11:28,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 734 events. 418/734 cut-off events. For 30704/30704 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3244 event pairs, 63 based on Foata normal form. 2/735 useless extension candidates. Maximal degree in co-relation 4741. Up to 660 conditions per place. [2024-06-28 03:11:28,536 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 135 selfloop transitions, 25 changer transitions 0/162 dead transitions. [2024-06-28 03:11:28,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 162 transitions, 1821 flow [2024-06-28 03:11:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:28,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:11:28,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 03:11:28,537 INFO L175 Difference]: Start difference. First operand has 160 places, 146 transitions, 1453 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:11:28,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 162 transitions, 1821 flow [2024-06-28 03:11:28,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 162 transitions, 1746 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:28,591 INFO L231 Difference]: Finished difference. Result has 163 places, 146 transitions, 1433 flow [2024-06-28 03:11:28,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1433, PETRI_PLACES=163, PETRI_TRANSITIONS=146} [2024-06-28 03:11:28,592 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-28 03:11:28,592 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 146 transitions, 1433 flow [2024-06-28 03:11:28,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:28,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:28,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:28,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:11:28,592 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:28,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:28,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1457227862, now seen corresponding path program 11 times [2024-06-28 03:11:28,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:28,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077223876] [2024-06-28 03:11:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:28,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:29,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:29,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:29,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077223876] [2024-06-28 03:11:29,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077223876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:29,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:29,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:29,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573475720] [2024-06-28 03:11:29,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:29,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:29,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:29,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:29,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:29,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:29,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 146 transitions, 1433 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:29,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:29,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:29,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:29,743 INFO L124 PetriNetUnfolderBase]: 492/856 cut-off events. [2024-06-28 03:11:29,743 INFO L125 PetriNetUnfolderBase]: For 36391/36391 co-relation queries the response was YES. [2024-06-28 03:11:29,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5603 conditions, 856 events. 492/856 cut-off events. For 36391/36391 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3924 event pairs, 73 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 5526. Up to 659 conditions per place. [2024-06-28 03:11:29,749 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 141 selfloop transitions, 47 changer transitions 0/190 dead transitions. [2024-06-28 03:11:29,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 190 transitions, 2229 flow [2024-06-28 03:11:29,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:29,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:11:29,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-28 03:11:29,750 INFO L175 Difference]: Start difference. First operand has 163 places, 146 transitions, 1433 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:11:29,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 190 transitions, 2229 flow [2024-06-28 03:11:29,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 190 transitions, 2089 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 03:11:29,813 INFO L231 Difference]: Finished difference. Result has 165 places, 165 transitions, 1674 flow [2024-06-28 03:11:29,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1674, PETRI_PLACES=165, PETRI_TRANSITIONS=165} [2024-06-28 03:11:29,814 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 136 predicate places. [2024-06-28 03:11:29,814 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 165 transitions, 1674 flow [2024-06-28 03:11:29,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2024-06-28 03:11:29,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:29,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:29,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:11:29,815 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:29,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash 333171802, now seen corresponding path program 1 times [2024-06-28 03:11:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:29,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700536501] [2024-06-28 03:11:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:29,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:30,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:30,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700536501] [2024-06-28 03:11:30,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700536501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:30,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:30,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:30,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684259107] [2024-06-28 03:11:30,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:30,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:30,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:30,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:30,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:30,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:30,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 165 transitions, 1674 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:30,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:30,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:30,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:30,978 INFO L124 PetriNetUnfolderBase]: 496/864 cut-off events. [2024-06-28 03:11:30,978 INFO L125 PetriNetUnfolderBase]: For 37994/37994 co-relation queries the response was YES. [2024-06-28 03:11:30,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5789 conditions, 864 events. 496/864 cut-off events. For 37994/37994 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3988 event pairs, 71 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 5713. Up to 767 conditions per place. [2024-06-28 03:11:30,983 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 156 selfloop transitions, 23 changer transitions 0/181 dead transitions. [2024-06-28 03:11:30,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 181 transitions, 2084 flow [2024-06-28 03:11:30,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-28 03:11:30,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-06-28 03:11:30,985 INFO L175 Difference]: Start difference. First operand has 165 places, 165 transitions, 1674 flow. Second operand 9 states and 92 transitions. [2024-06-28 03:11:30,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 181 transitions, 2084 flow [2024-06-28 03:11:31,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 181 transitions, 1990 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:31,053 INFO L231 Difference]: Finished difference. Result has 167 places, 166 transitions, 1648 flow [2024-06-28 03:11:31,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1648, PETRI_PLACES=167, PETRI_TRANSITIONS=166} [2024-06-28 03:11:31,053 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-28 03:11:31,053 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 1648 flow [2024-06-28 03:11:31,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:31,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:31,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:31,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:11:31,054 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:31,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:31,054 INFO L85 PathProgramCache]: Analyzing trace with hash 335049627, now seen corresponding path program 1 times [2024-06-28 03:11:31,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:31,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344479547] [2024-06-28 03:11:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:31,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:31,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:31,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344479547] [2024-06-28 03:11:31,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344479547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:31,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:31,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:31,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847910934] [2024-06-28 03:11:31,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:31,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:31,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:31,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:31,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:32,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:32,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 166 transitions, 1648 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:32,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:32,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:32,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:32,366 INFO L124 PetriNetUnfolderBase]: 492/858 cut-off events. [2024-06-28 03:11:32,366 INFO L125 PetriNetUnfolderBase]: For 37248/37248 co-relation queries the response was YES. [2024-06-28 03:11:32,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5610 conditions, 858 events. 492/858 cut-off events. For 37248/37248 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3970 event pairs, 67 based on Foata normal form. 2/859 useless extension candidates. Maximal degree in co-relation 5534. Up to 724 conditions per place. [2024-06-28 03:11:32,371 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 138 selfloop transitions, 44 changer transitions 0/184 dead transitions. [2024-06-28 03:11:32,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 184 transitions, 2143 flow [2024-06-28 03:11:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:11:32,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 03:11:32,372 INFO L175 Difference]: Start difference. First operand has 167 places, 166 transitions, 1648 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:11:32,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 184 transitions, 2143 flow [2024-06-28 03:11:32,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 184 transitions, 2085 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:32,444 INFO L231 Difference]: Finished difference. Result has 169 places, 169 transitions, 1783 flow [2024-06-28 03:11:32,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1783, PETRI_PLACES=169, PETRI_TRANSITIONS=169} [2024-06-28 03:11:32,445 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-28 03:11:32,445 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 169 transitions, 1783 flow [2024-06-28 03:11:32,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:32,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:32,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:32,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:11:32,445 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:32,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:32,446 INFO L85 PathProgramCache]: Analyzing trace with hash 335049472, now seen corresponding path program 2 times [2024-06-28 03:11:32,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:32,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077459957] [2024-06-28 03:11:32,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:32,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:33,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:33,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077459957] [2024-06-28 03:11:33,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077459957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:33,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:33,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:33,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205084819] [2024-06-28 03:11:33,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:33,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:33,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:33,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:33,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:33,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:33,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 169 transitions, 1783 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:33,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:33,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:33,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:33,711 INFO L124 PetriNetUnfolderBase]: 496/866 cut-off events. [2024-06-28 03:11:33,711 INFO L125 PetriNetUnfolderBase]: For 38725/38725 co-relation queries the response was YES. [2024-06-28 03:11:33,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 866 events. 496/866 cut-off events. For 38725/38725 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4019 event pairs, 71 based on Foata normal form. 2/867 useless extension candidates. Maximal degree in co-relation 5688. Up to 742 conditions per place. [2024-06-28 03:11:33,716 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 144 selfloop transitions, 39 changer transitions 0/185 dead transitions. [2024-06-28 03:11:33,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 185 transitions, 2207 flow [2024-06-28 03:11:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:33,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:11:33,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 03:11:33,717 INFO L175 Difference]: Start difference. First operand has 169 places, 169 transitions, 1783 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:11:33,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 185 transitions, 2207 flow [2024-06-28 03:11:33,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 185 transitions, 2055 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:33,794 INFO L231 Difference]: Finished difference. Result has 171 places, 170 transitions, 1736 flow [2024-06-28 03:11:33,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1736, PETRI_PLACES=171, PETRI_TRANSITIONS=170} [2024-06-28 03:11:33,794 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-06-28 03:11:33,794 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 170 transitions, 1736 flow [2024-06-28 03:11:33,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:33,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:33,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:33,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:11:33,795 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:33,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:33,795 INFO L85 PathProgramCache]: Analyzing trace with hash 253988486, now seen corresponding path program 3 times [2024-06-28 03:11:33,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:33,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311091415] [2024-06-28 03:11:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:33,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:34,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:34,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311091415] [2024-06-28 03:11:34,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311091415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:34,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:34,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:34,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095151149] [2024-06-28 03:11:34,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:34,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:34,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:34,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:34,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:34,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:34,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 170 transitions, 1736 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:34,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:34,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:34,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:35,280 INFO L124 PetriNetUnfolderBase]: 500/874 cut-off events. [2024-06-28 03:11:35,281 INFO L125 PetriNetUnfolderBase]: For 40740/40740 co-relation queries the response was YES. [2024-06-28 03:11:35,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5758 conditions, 874 events. 500/874 cut-off events. For 40740/40740 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4084 event pairs, 74 based on Foata normal form. 2/875 useless extension candidates. Maximal degree in co-relation 5680. Up to 792 conditions per place. [2024-06-28 03:11:35,286 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 158 selfloop transitions, 26 changer transitions 0/186 dead transitions. [2024-06-28 03:11:35,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 186 transitions, 2168 flow [2024-06-28 03:11:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:35,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:11:35,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-28 03:11:35,287 INFO L175 Difference]: Start difference. First operand has 171 places, 170 transitions, 1736 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:11:35,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 186 transitions, 2168 flow [2024-06-28 03:11:35,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 186 transitions, 2079 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:35,360 INFO L231 Difference]: Finished difference. Result has 174 places, 171 transitions, 1725 flow [2024-06-28 03:11:35,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1725, PETRI_PLACES=174, PETRI_TRANSITIONS=171} [2024-06-28 03:11:35,361 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-06-28 03:11:35,361 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 171 transitions, 1725 flow [2024-06-28 03:11:35,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:35,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:35,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:35,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:11:35,361 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:35,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:35,362 INFO L85 PathProgramCache]: Analyzing trace with hash 421891384, now seen corresponding path program 1 times [2024-06-28 03:11:35,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:35,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213221704] [2024-06-28 03:11:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:35,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:36,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213221704] [2024-06-28 03:11:36,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213221704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:36,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:36,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:36,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179718057] [2024-06-28 03:11:36,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:36,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:36,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:36,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:36,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:36,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 171 transitions, 1725 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:36,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:36,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:36,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:36,599 INFO L124 PetriNetUnfolderBase]: 512/894 cut-off events. [2024-06-28 03:11:36,599 INFO L125 PetriNetUnfolderBase]: For 44931/44931 co-relation queries the response was YES. [2024-06-28 03:11:36,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5886 conditions, 894 events. 512/894 cut-off events. For 44931/44931 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4187 event pairs, 66 based on Foata normal form. 4/897 useless extension candidates. Maximal degree in co-relation 5807. Up to 767 conditions per place. [2024-06-28 03:11:36,608 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 153 selfloop transitions, 36 changer transitions 0/191 dead transitions. [2024-06-28 03:11:36,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 191 transitions, 2245 flow [2024-06-28 03:11:36,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:36,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:11:36,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 03:11:36,609 INFO L175 Difference]: Start difference. First operand has 174 places, 171 transitions, 1725 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:11:36,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 191 transitions, 2245 flow [2024-06-28 03:11:36,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 191 transitions, 2175 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:36,696 INFO L231 Difference]: Finished difference. Result has 175 places, 175 transitions, 1836 flow [2024-06-28 03:11:36,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1836, PETRI_PLACES=175, PETRI_TRANSITIONS=175} [2024-06-28 03:11:36,697 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-06-28 03:11:36,697 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 175 transitions, 1836 flow [2024-06-28 03:11:36,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:36,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:36,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:36,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:11:36,697 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:36,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:36,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1741802200, now seen corresponding path program 2 times [2024-06-28 03:11:36,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:36,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619970393] [2024-06-28 03:11:36,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:36,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:37,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619970393] [2024-06-28 03:11:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619970393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:37,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:37,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:37,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695865763] [2024-06-28 03:11:37,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:37,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:37,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:37,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:37,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:37,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 175 transitions, 1836 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:37,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:37,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:37,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:37,764 INFO L124 PetriNetUnfolderBase]: 524/914 cut-off events. [2024-06-28 03:11:37,765 INFO L125 PetriNetUnfolderBase]: For 47018/47018 co-relation queries the response was YES. [2024-06-28 03:11:37,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 914 events. 524/914 cut-off events. For 47018/47018 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4318 event pairs, 83 based on Foata normal form. 4/917 useless extension candidates. Maximal degree in co-relation 6027. Up to 778 conditions per place. [2024-06-28 03:11:37,771 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 153 selfloop transitions, 40 changer transitions 0/195 dead transitions. [2024-06-28 03:11:37,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 195 transitions, 2446 flow [2024-06-28 03:11:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:11:37,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:11:37,772 INFO L175 Difference]: Start difference. First operand has 175 places, 175 transitions, 1836 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:11:37,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 195 transitions, 2446 flow [2024-06-28 03:11:37,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 195 transitions, 2317 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:37,855 INFO L231 Difference]: Finished difference. Result has 178 places, 179 transitions, 1873 flow [2024-06-28 03:11:37,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1873, PETRI_PLACES=178, PETRI_TRANSITIONS=179} [2024-06-28 03:11:37,856 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2024-06-28 03:11:37,856 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 179 transitions, 1873 flow [2024-06-28 03:11:37,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:37,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:37,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:37,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:11:37,857 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:37,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash 102585941, now seen corresponding path program 1 times [2024-06-28 03:11:37,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:37,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378176806] [2024-06-28 03:11:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:37,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:38,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:38,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378176806] [2024-06-28 03:11:38,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378176806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:38,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:38,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:38,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873753104] [2024-06-28 03:11:38,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:38,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:38,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:38,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:38,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:38,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:38,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 179 transitions, 1873 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:38,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:38,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:38,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:38,990 INFO L124 PetriNetUnfolderBase]: 528/922 cut-off events. [2024-06-28 03:11:38,990 INFO L125 PetriNetUnfolderBase]: For 46038/46038 co-relation queries the response was YES. [2024-06-28 03:11:38,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6140 conditions, 922 events. 528/922 cut-off events. For 46038/46038 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4367 event pairs, 89 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 6059. Up to 882 conditions per place. [2024-06-28 03:11:38,997 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 171 selfloop transitions, 19 changer transitions 0/192 dead transitions. [2024-06-28 03:11:38,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 192 transitions, 2312 flow [2024-06-28 03:11:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-28 03:11:38,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-28 03:11:38,998 INFO L175 Difference]: Start difference. First operand has 178 places, 179 transitions, 1873 flow. Second operand 10 states and 96 transitions. [2024-06-28 03:11:38,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 192 transitions, 2312 flow [2024-06-28 03:11:39,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 192 transitions, 2182 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:39,088 INFO L231 Difference]: Finished difference. Result has 181 places, 181 transitions, 1821 flow [2024-06-28 03:11:39,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1821, PETRI_PLACES=181, PETRI_TRANSITIONS=181} [2024-06-28 03:11:39,088 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2024-06-28 03:11:39,088 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 181 transitions, 1821 flow [2024-06-28 03:11:39,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:39,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:39,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:39,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:11:39,089 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:39,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:39,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1747516492, now seen corresponding path program 4 times [2024-06-28 03:11:39,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:39,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098127687] [2024-06-28 03:11:39,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:39,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:39,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:39,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098127687] [2024-06-28 03:11:39,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098127687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:39,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:39,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:39,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905563203] [2024-06-28 03:11:39,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:39,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:39,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:39,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:39,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:39,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:39,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 181 transitions, 1821 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:39,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:39,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:39,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:40,240 INFO L124 PetriNetUnfolderBase]: 532/930 cut-off events. [2024-06-28 03:11:40,240 INFO L125 PetriNetUnfolderBase]: For 47457/47457 co-relation queries the response was YES. [2024-06-28 03:11:40,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 930 events. 532/930 cut-off events. For 47457/47457 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4433 event pairs, 67 based on Foata normal form. 2/931 useless extension candidates. Maximal degree in co-relation 6025. Up to 804 conditions per place. [2024-06-28 03:11:40,248 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 152 selfloop transitions, 42 changer transitions 0/196 dead transitions. [2024-06-28 03:11:40,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 196 transitions, 2269 flow [2024-06-28 03:11:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:40,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:11:40,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 03:11:40,256 INFO L175 Difference]: Start difference. First operand has 181 places, 181 transitions, 1821 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:11:40,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 196 transitions, 2269 flow [2024-06-28 03:11:40,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 196 transitions, 2209 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:40,343 INFO L231 Difference]: Finished difference. Result has 184 places, 182 transitions, 1874 flow [2024-06-28 03:11:40,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1874, PETRI_PLACES=184, PETRI_TRANSITIONS=182} [2024-06-28 03:11:40,344 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-28 03:11:40,344 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 182 transitions, 1874 flow [2024-06-28 03:11:40,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:40,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:40,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:40,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:11:40,344 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:40,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:40,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1742009962, now seen corresponding path program 5 times [2024-06-28 03:11:40,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:40,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611001356] [2024-06-28 03:11:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:40,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:41,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:41,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611001356] [2024-06-28 03:11:41,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611001356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:41,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:41,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:41,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877772655] [2024-06-28 03:11:41,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:41,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:41,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:41,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:41,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:41,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:41,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 182 transitions, 1874 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:41,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:41,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:41,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:41,521 INFO L124 PetriNetUnfolderBase]: 536/938 cut-off events. [2024-06-28 03:11:41,521 INFO L125 PetriNetUnfolderBase]: For 49377/49377 co-relation queries the response was YES. [2024-06-28 03:11:41,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6234 conditions, 938 events. 536/938 cut-off events. For 49377/49377 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4492 event pairs, 95 based on Foata normal form. 2/939 useless extension candidates. Maximal degree in co-relation 6150. Up to 884 conditions per place. [2024-06-28 03:11:41,530 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 171 selfloop transitions, 22 changer transitions 0/195 dead transitions. [2024-06-28 03:11:41,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 195 transitions, 2314 flow [2024-06-28 03:11:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 03:11:41,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:11:41,532 INFO L175 Difference]: Start difference. First operand has 184 places, 182 transitions, 1874 flow. Second operand 9 states and 90 transitions. [2024-06-28 03:11:41,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 195 transitions, 2314 flow [2024-06-28 03:11:41,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 195 transitions, 2213 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:41,649 INFO L231 Difference]: Finished difference. Result has 186 places, 183 transitions, 1848 flow [2024-06-28 03:11:41,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1848, PETRI_PLACES=186, PETRI_TRANSITIONS=183} [2024-06-28 03:11:41,650 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2024-06-28 03:11:41,650 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 183 transitions, 1848 flow [2024-06-28 03:11:41,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:41,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:41,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:41,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:11:41,650 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:41,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1742004010, now seen corresponding path program 3 times [2024-06-28 03:11:41,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:41,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797433522] [2024-06-28 03:11:41,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:41,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:42,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:42,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797433522] [2024-06-28 03:11:42,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797433522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:42,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:42,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:42,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59780272] [2024-06-28 03:11:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:42,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:42,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:42,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:42,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:42,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:42,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 183 transitions, 1848 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:42,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:42,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:42,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:42,723 INFO L124 PetriNetUnfolderBase]: 528/926 cut-off events. [2024-06-28 03:11:42,724 INFO L125 PetriNetUnfolderBase]: For 47655/47655 co-relation queries the response was YES. [2024-06-28 03:11:42,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5899 conditions, 926 events. 528/926 cut-off events. For 47655/47655 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4426 event pairs, 85 based on Foata normal form. 4/929 useless extension candidates. Maximal degree in co-relation 5814. Up to 796 conditions per place. [2024-06-28 03:11:42,730 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 153 selfloop transitions, 43 changer transitions 0/198 dead transitions. [2024-06-28 03:11:42,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 198 transitions, 2282 flow [2024-06-28 03:11:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:42,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:11:42,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:11:42,731 INFO L175 Difference]: Start difference. First operand has 186 places, 183 transitions, 1848 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:11:42,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 198 transitions, 2282 flow [2024-06-28 03:11:42,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 198 transitions, 2175 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:42,828 INFO L231 Difference]: Finished difference. Result has 189 places, 183 transitions, 1835 flow [2024-06-28 03:11:42,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1835, PETRI_PLACES=189, PETRI_TRANSITIONS=183} [2024-06-28 03:11:42,829 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-28 03:11:42,829 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 183 transitions, 1835 flow [2024-06-28 03:11:42,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:42,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:42,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:42,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:11:42,830 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:42,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:42,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1747520212, now seen corresponding path program 6 times [2024-06-28 03:11:42,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:42,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550717687] [2024-06-28 03:11:42,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:42,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:43,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:43,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550717687] [2024-06-28 03:11:43,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550717687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:43,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:43,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:43,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841681837] [2024-06-28 03:11:43,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:43,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:43,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:43,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:43,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:43,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:43,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 183 transitions, 1835 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:43,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:43,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:43,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:44,032 INFO L124 PetriNetUnfolderBase]: 532/934 cut-off events. [2024-06-28 03:11:44,032 INFO L125 PetriNetUnfolderBase]: For 46145/46145 co-relation queries the response was YES. [2024-06-28 03:11:44,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5974 conditions, 934 events. 532/934 cut-off events. For 46145/46145 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4494 event pairs, 65 based on Foata normal form. 2/935 useless extension candidates. Maximal degree in co-relation 5888. Up to 816 conditions per place. [2024-06-28 03:11:44,039 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 157 selfloop transitions, 39 changer transitions 0/198 dead transitions. [2024-06-28 03:11:44,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 198 transitions, 2289 flow [2024-06-28 03:11:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:44,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 03:11:44,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-28 03:11:44,040 INFO L175 Difference]: Start difference. First operand has 189 places, 183 transitions, 1835 flow. Second operand 9 states and 94 transitions. [2024-06-28 03:11:44,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 198 transitions, 2289 flow [2024-06-28 03:11:44,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 198 transitions, 2168 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:11:44,141 INFO L231 Difference]: Finished difference. Result has 188 places, 184 transitions, 1824 flow [2024-06-28 03:11:44,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1824, PETRI_PLACES=188, PETRI_TRANSITIONS=184} [2024-06-28 03:11:44,142 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-28 03:11:44,142 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 184 transitions, 1824 flow [2024-06-28 03:11:44,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:44,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:44,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:44,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:11:44,142 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:44,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:44,143 INFO L85 PathProgramCache]: Analyzing trace with hash -299049642, now seen corresponding path program 4 times [2024-06-28 03:11:44,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:44,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651739720] [2024-06-28 03:11:44,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:44,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:45,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:45,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651739720] [2024-06-28 03:11:45,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651739720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:45,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:45,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:45,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452011618] [2024-06-28 03:11:45,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:45,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:45,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:45,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:45,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:45,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:45,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 184 transitions, 1824 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:45,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:45,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:45,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:45,670 INFO L124 PetriNetUnfolderBase]: 539/946 cut-off events. [2024-06-28 03:11:45,671 INFO L125 PetriNetUnfolderBase]: For 49855/49855 co-relation queries the response was YES. [2024-06-28 03:11:45,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6021 conditions, 946 events. 539/946 cut-off events. For 49855/49855 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4549 event pairs, 67 based on Foata normal form. 4/949 useless extension candidates. Maximal degree in co-relation 5934. Up to 796 conditions per place. [2024-06-28 03:11:45,682 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 153 selfloop transitions, 49 changer transitions 0/204 dead transitions. [2024-06-28 03:11:45,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 204 transitions, 2372 flow [2024-06-28 03:11:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:11:45,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:11:45,683 INFO L175 Difference]: Start difference. First operand has 188 places, 184 transitions, 1824 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:11:45,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 204 transitions, 2372 flow [2024-06-28 03:11:45,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 204 transitions, 2272 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:45,793 INFO L231 Difference]: Finished difference. Result has 191 places, 188 transitions, 1936 flow [2024-06-28 03:11:45,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1936, PETRI_PLACES=191, PETRI_TRANSITIONS=188} [2024-06-28 03:11:45,794 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-28 03:11:45,794 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 188 transitions, 1936 flow [2024-06-28 03:11:45,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:45,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:45,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:45,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:11:45,794 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:45,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:45,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1342906324, now seen corresponding path program 7 times [2024-06-28 03:11:45,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:45,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868565237] [2024-06-28 03:11:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:45,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:46,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868565237] [2024-06-28 03:11:46,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868565237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:46,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:46,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776243681] [2024-06-28 03:11:46,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:46,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:46,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:46,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:46,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:46,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:46,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 188 transitions, 1936 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:46,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:46,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:46,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:46,949 INFO L124 PetriNetUnfolderBase]: 543/955 cut-off events. [2024-06-28 03:11:46,949 INFO L125 PetriNetUnfolderBase]: For 48378/48378 co-relation queries the response was YES. [2024-06-28 03:11:46,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6139 conditions, 955 events. 543/955 cut-off events. For 48378/48378 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4647 event pairs, 93 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 6051. Up to 905 conditions per place. [2024-06-28 03:11:46,957 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 176 selfloop transitions, 21 changer transitions 0/199 dead transitions. [2024-06-28 03:11:46,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 199 transitions, 2382 flow [2024-06-28 03:11:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-28 03:11:46,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-28 03:11:46,958 INFO L175 Difference]: Start difference. First operand has 191 places, 188 transitions, 1936 flow. Second operand 9 states and 89 transitions. [2024-06-28 03:11:46,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 199 transitions, 2382 flow [2024-06-28 03:11:47,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 199 transitions, 2210 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:47,071 INFO L231 Difference]: Finished difference. Result has 192 places, 189 transitions, 1840 flow [2024-06-28 03:11:47,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1840, PETRI_PLACES=192, PETRI_TRANSITIONS=189} [2024-06-28 03:11:47,072 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-06-28 03:11:47,072 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 189 transitions, 1840 flow [2024-06-28 03:11:47,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:47,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:47,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:47,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:11:47,072 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:47,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:47,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1342900372, now seen corresponding path program 5 times [2024-06-28 03:11:47,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:47,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240787279] [2024-06-28 03:11:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:47,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:48,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:48,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240787279] [2024-06-28 03:11:48,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240787279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:48,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:48,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:48,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644056825] [2024-06-28 03:11:48,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:48,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:48,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:48,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:48,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:48,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:48,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 189 transitions, 1840 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:48,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:48,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:48,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:48,410 INFO L124 PetriNetUnfolderBase]: 549/965 cut-off events. [2024-06-28 03:11:48,410 INFO L125 PetriNetUnfolderBase]: For 49309/49309 co-relation queries the response was YES. [2024-06-28 03:11:48,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6071 conditions, 965 events. 549/965 cut-off events. For 49309/49309 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4710 event pairs, 90 based on Foata normal form. 2/966 useless extension candidates. Maximal degree in co-relation 5982. Up to 876 conditions per place. [2024-06-28 03:11:48,417 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 172 selfloop transitions, 31 changer transitions 0/205 dead transitions. [2024-06-28 03:11:48,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 205 transitions, 2438 flow [2024-06-28 03:11:48,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:48,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:48,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:11:48,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:11:48,418 INFO L175 Difference]: Start difference. First operand has 192 places, 189 transitions, 1840 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:11:48,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 205 transitions, 2438 flow [2024-06-28 03:11:48,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 205 transitions, 2372 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:48,544 INFO L231 Difference]: Finished difference. Result has 195 places, 191 transitions, 1877 flow [2024-06-28 03:11:48,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1877, PETRI_PLACES=195, PETRI_TRANSITIONS=191} [2024-06-28 03:11:48,544 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-28 03:11:48,545 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 191 transitions, 1877 flow [2024-06-28 03:11:48,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:48,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:48,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:11:48,545 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:48,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1342690843, now seen corresponding path program 2 times [2024-06-28 03:11:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:48,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12962557] [2024-06-28 03:11:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:48,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:49,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:49,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12962557] [2024-06-28 03:11:49,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12962557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:49,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:49,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:49,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762179235] [2024-06-28 03:11:49,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:49,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:49,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:49,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:49,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 191 transitions, 1877 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:49,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:49,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:49,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:49,593 INFO L124 PetriNetUnfolderBase]: 553/973 cut-off events. [2024-06-28 03:11:49,593 INFO L125 PetriNetUnfolderBase]: For 50760/50760 co-relation queries the response was YES. [2024-06-28 03:11:49,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6138 conditions, 973 events. 553/973 cut-off events. For 50760/50760 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4765 event pairs, 97 based on Foata normal form. 2/974 useless extension candidates. Maximal degree in co-relation 6048. Up to 923 conditions per place. [2024-06-28 03:11:49,604 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 177 selfloop transitions, 22 changer transitions 0/201 dead transitions. [2024-06-28 03:11:49,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 201 transitions, 2315 flow [2024-06-28 03:11:49,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-28 03:11:49,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-28 03:11:49,606 INFO L175 Difference]: Start difference. First operand has 195 places, 191 transitions, 1877 flow. Second operand 9 states and 89 transitions. [2024-06-28 03:11:49,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 201 transitions, 2315 flow [2024-06-28 03:11:49,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 201 transitions, 2229 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:49,734 INFO L231 Difference]: Finished difference. Result has 196 places, 192 transitions, 1861 flow [2024-06-28 03:11:49,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1861, PETRI_PLACES=196, PETRI_TRANSITIONS=192} [2024-06-28 03:11:49,735 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 167 predicate places. [2024-06-28 03:11:49,735 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 192 transitions, 1861 flow [2024-06-28 03:11:49,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:49,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:49,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:49,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:11:49,735 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:49,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:49,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1683770302, now seen corresponding path program 6 times [2024-06-28 03:11:49,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:49,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064720403] [2024-06-28 03:11:49,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:49,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:50,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:50,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064720403] [2024-06-28 03:11:50,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064720403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:50,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:50,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:50,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32590838] [2024-06-28 03:11:50,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:50,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:50,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:50,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:50,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:50,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:50,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 192 transitions, 1861 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:50,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:50,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:50,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:50,889 INFO L124 PetriNetUnfolderBase]: 549/966 cut-off events. [2024-06-28 03:11:50,889 INFO L125 PetriNetUnfolderBase]: For 48461/48461 co-relation queries the response was YES. [2024-06-28 03:11:50,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5957 conditions, 966 events. 549/966 cut-off events. For 48461/48461 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4727 event pairs, 133 based on Foata normal form. 2/967 useless extension candidates. Maximal degree in co-relation 5866. Up to 915 conditions per place. [2024-06-28 03:11:50,897 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 183 selfloop transitions, 19 changer transitions 0/204 dead transitions. [2024-06-28 03:11:50,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 204 transitions, 2323 flow [2024-06-28 03:11:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:11:50,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-28 03:11:50,898 INFO L175 Difference]: Start difference. First operand has 196 places, 192 transitions, 1861 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:11:50,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 204 transitions, 2323 flow [2024-06-28 03:11:51,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 204 transitions, 2247 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:51,032 INFO L231 Difference]: Finished difference. Result has 199 places, 192 transitions, 1828 flow [2024-06-28 03:11:51,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1828, PETRI_PLACES=199, PETRI_TRANSITIONS=192} [2024-06-28 03:11:51,032 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-28 03:11:51,032 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 192 transitions, 1828 flow [2024-06-28 03:11:51,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:51,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:51,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:51,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:11:51,033 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:51,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:51,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1143296667, now seen corresponding path program 3 times [2024-06-28 03:11:51,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:51,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953717703] [2024-06-28 03:11:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:51,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:51,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953717703] [2024-06-28 03:11:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953717703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:51,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:51,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:51,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488193220] [2024-06-28 03:11:51,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:51,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:51,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:51,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:51,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 192 transitions, 1828 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:51,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:51,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:51,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:52,179 INFO L124 PetriNetUnfolderBase]: 553/974 cut-off events. [2024-06-28 03:11:52,179 INFO L125 PetriNetUnfolderBase]: For 49929/49929 co-relation queries the response was YES. [2024-06-28 03:11:52,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5992 conditions, 974 events. 553/974 cut-off events. For 49929/49929 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4784 event pairs, 135 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 5900. Up to 937 conditions per place. [2024-06-28 03:11:52,187 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 186 selfloop transitions, 15 changer transitions 0/203 dead transitions. [2024-06-28 03:11:52,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 203 transitions, 2302 flow [2024-06-28 03:11:52,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:52,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:52,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-28 03:11:52,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-28 03:11:52,188 INFO L175 Difference]: Start difference. First operand has 199 places, 192 transitions, 1828 flow. Second operand 9 states and 88 transitions. [2024-06-28 03:11:52,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 203 transitions, 2302 flow [2024-06-28 03:11:52,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 203 transitions, 2252 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:11:52,320 INFO L231 Difference]: Finished difference. Result has 199 places, 193 transitions, 1836 flow [2024-06-28 03:11:52,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1836, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2024-06-28 03:11:52,321 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-28 03:11:52,321 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 1836 flow [2024-06-28 03:11:52,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:52,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:52,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:52,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:11:52,322 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:52,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:52,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1883179916, now seen corresponding path program 7 times [2024-06-28 03:11:52,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:52,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158782443] [2024-06-28 03:11:52,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:52,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:53,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:53,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158782443] [2024-06-28 03:11:53,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158782443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:53,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:53,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:53,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398499667] [2024-06-28 03:11:53,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:53,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:53,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:53,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:53,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:53,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:53,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 1836 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:53,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:53,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:53,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:53,722 INFO L124 PetriNetUnfolderBase]: 549/969 cut-off events. [2024-06-28 03:11:53,722 INFO L125 PetriNetUnfolderBase]: For 47535/47535 co-relation queries the response was YES. [2024-06-28 03:11:53,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5837 conditions, 969 events. 549/969 cut-off events. For 47535/47535 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4791 event pairs, 89 based on Foata normal form. 2/970 useless extension candidates. Maximal degree in co-relation 5744. Up to 883 conditions per place. [2024-06-28 03:11:53,729 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 174 selfloop transitions, 30 changer transitions 0/206 dead transitions. [2024-06-28 03:11:53,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 206 transitions, 2280 flow [2024-06-28 03:11:53,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:11:53,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:11:53,731 INFO L175 Difference]: Start difference. First operand has 199 places, 193 transitions, 1836 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:11:53,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 206 transitions, 2280 flow [2024-06-28 03:11:53,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 206 transitions, 2210 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:53,847 INFO L231 Difference]: Finished difference. Result has 202 places, 193 transitions, 1831 flow [2024-06-28 03:11:53,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1831, PETRI_PLACES=202, PETRI_TRANSITIONS=193} [2024-06-28 03:11:53,848 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-28 03:11:53,848 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 193 transitions, 1831 flow [2024-06-28 03:11:53,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:53,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:53,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:53,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:11:53,848 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:53,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash 886580676, now seen corresponding path program 8 times [2024-06-28 03:11:53,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:53,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094619304] [2024-06-28 03:11:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:53,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:54,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:54,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094619304] [2024-06-28 03:11:54,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094619304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:54,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:54,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:54,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475426863] [2024-06-28 03:11:54,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:54,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:54,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:54,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:54,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:54,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:54,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 193 transitions, 1831 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:54,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:54,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:54,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:54,995 INFO L124 PetriNetUnfolderBase]: 553/977 cut-off events. [2024-06-28 03:11:54,995 INFO L125 PetriNetUnfolderBase]: For 49153/49153 co-relation queries the response was YES. [2024-06-28 03:11:54,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5912 conditions, 977 events. 553/977 cut-off events. For 49153/49153 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4847 event pairs, 89 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 5818. Up to 897 conditions per place. [2024-06-28 03:11:55,001 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 173 selfloop transitions, 30 changer transitions 0/205 dead transitions. [2024-06-28 03:11:55,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 205 transitions, 2295 flow [2024-06-28 03:11:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:55,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-28 03:11:55,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-06-28 03:11:55,002 INFO L175 Difference]: Start difference. First operand has 202 places, 193 transitions, 1831 flow. Second operand 9 states and 92 transitions. [2024-06-28 03:11:55,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 205 transitions, 2295 flow [2024-06-28 03:11:55,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 205 transitions, 2217 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:11:55,125 INFO L231 Difference]: Finished difference. Result has 201 places, 194 transitions, 1849 flow [2024-06-28 03:11:55,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1849, PETRI_PLACES=201, PETRI_TRANSITIONS=194} [2024-06-28 03:11:55,126 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-28 03:11:55,126 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 194 transitions, 1849 flow [2024-06-28 03:11:55,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:55,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:55,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:55,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:11:55,126 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:55,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash -907670634, now seen corresponding path program 9 times [2024-06-28 03:11:55,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:55,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004838541] [2024-06-28 03:11:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:55,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:56,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:56,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004838541] [2024-06-28 03:11:56,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004838541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:56,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:56,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:56,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939737965] [2024-06-28 03:11:56,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:56,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:56,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:56,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:56,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:56,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:56,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 194 transitions, 1849 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:56,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:56,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:56,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:56,434 INFO L124 PetriNetUnfolderBase]: 557/985 cut-off events. [2024-06-28 03:11:56,434 INFO L125 PetriNetUnfolderBase]: For 51049/51049 co-relation queries the response was YES. [2024-06-28 03:11:56,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 985 events. 557/985 cut-off events. For 51049/51049 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4891 event pairs, 65 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 5909. Up to 773 conditions per place. [2024-06-28 03:11:56,441 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 150 selfloop transitions, 55 changer transitions 0/207 dead transitions. [2024-06-28 03:11:56,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 207 transitions, 2323 flow [2024-06-28 03:11:56,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:56,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:11:56,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 03:11:56,443 INFO L175 Difference]: Start difference. First operand has 201 places, 194 transitions, 1849 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:11:56,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 207 transitions, 2323 flow [2024-06-28 03:11:56,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 207 transitions, 2237 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:56,571 INFO L231 Difference]: Finished difference. Result has 203 places, 195 transitions, 1911 flow [2024-06-28 03:11:56,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1911, PETRI_PLACES=203, PETRI_TRANSITIONS=195} [2024-06-28 03:11:56,571 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 174 predicate places. [2024-06-28 03:11:56,571 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 195 transitions, 1911 flow [2024-06-28 03:11:56,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:56,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:56,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:56,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:11:56,572 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:56,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:56,572 INFO L85 PathProgramCache]: Analyzing trace with hash -708218742, now seen corresponding path program 8 times [2024-06-28 03:11:56,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:56,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296615786] [2024-06-28 03:11:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:56,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:57,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:57,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296615786] [2024-06-28 03:11:57,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296615786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:57,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:57,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:57,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964002178] [2024-06-28 03:11:57,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:57,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:57,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:57,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:57,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:57,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:57,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 195 transitions, 1911 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:57,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:57,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:57,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:57,734 INFO L124 PetriNetUnfolderBase]: 563/995 cut-off events. [2024-06-28 03:11:57,735 INFO L125 PetriNetUnfolderBase]: For 52379/52379 co-relation queries the response was YES. [2024-06-28 03:11:57,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 995 events. 563/995 cut-off events. For 52379/52379 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4961 event pairs, 92 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 6011. Up to 716 conditions per place. [2024-06-28 03:11:57,742 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 142 selfloop transitions, 69 changer transitions 0/213 dead transitions. [2024-06-28 03:11:57,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 213 transitions, 2571 flow [2024-06-28 03:11:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:11:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:11:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:11:57,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-28 03:11:57,745 INFO L175 Difference]: Start difference. First operand has 203 places, 195 transitions, 1911 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:11:57,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 213 transitions, 2571 flow [2024-06-28 03:11:57,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 213 transitions, 2433 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:57,869 INFO L231 Difference]: Finished difference. Result has 207 places, 197 transitions, 1950 flow [2024-06-28 03:11:57,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1950, PETRI_PLACES=207, PETRI_TRANSITIONS=197} [2024-06-28 03:11:57,870 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-06-28 03:11:57,870 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 197 transitions, 1950 flow [2024-06-28 03:11:57,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:57,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:57,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:57,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:11:57,870 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:57,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1888897928, now seen corresponding path program 10 times [2024-06-28 03:11:57,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:57,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087716860] [2024-06-28 03:11:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:57,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:58,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:58,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087716860] [2024-06-28 03:11:58,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087716860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:58,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:58,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:58,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602975896] [2024-06-28 03:11:58,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:58,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:58,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:58,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:58,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:58,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:11:58,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 197 transitions, 1950 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:58,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:58,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:11:58,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:59,159 INFO L124 PetriNetUnfolderBase]: 567/1003 cut-off events. [2024-06-28 03:11:59,159 INFO L125 PetriNetUnfolderBase]: For 53752/53752 co-relation queries the response was YES. [2024-06-28 03:11:59,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6207 conditions, 1003 events. 567/1003 cut-off events. For 53752/53752 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5017 event pairs, 70 based on Foata normal form. 2/1004 useless extension candidates. Maximal degree in co-relation 6110. Up to 771 conditions per place. [2024-06-28 03:11:59,165 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 151 selfloop transitions, 58 changer transitions 0/211 dead transitions. [2024-06-28 03:11:59,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 211 transitions, 2436 flow [2024-06-28 03:11:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:59,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:11:59,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:11:59,166 INFO L175 Difference]: Start difference. First operand has 207 places, 197 transitions, 1950 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:11:59,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 211 transitions, 2436 flow [2024-06-28 03:11:59,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 211 transitions, 2274 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:11:59,282 INFO L231 Difference]: Finished difference. Result has 207 places, 198 transitions, 1944 flow [2024-06-28 03:11:59,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1944, PETRI_PLACES=207, PETRI_TRANSITIONS=198} [2024-06-28 03:11:59,283 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-06-28 03:11:59,283 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 198 transitions, 1944 flow [2024-06-28 03:11:59,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:59,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:59,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:59,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:11:59,283 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:59,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:59,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1152819867, now seen corresponding path program 4 times [2024-06-28 03:11:59,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:59,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567078178] [2024-06-28 03:11:59,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:59,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:00,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:00,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567078178] [2024-06-28 03:12:00,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567078178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:00,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:00,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:00,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480420635] [2024-06-28 03:12:00,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:00,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:00,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:00,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:00,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:00,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:00,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 198 transitions, 1944 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:00,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:00,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:00,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:00,603 INFO L124 PetriNetUnfolderBase]: 571/1010 cut-off events. [2024-06-28 03:12:00,603 INFO L125 PetriNetUnfolderBase]: For 55569/55569 co-relation queries the response was YES. [2024-06-28 03:12:00,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6230 conditions, 1010 events. 571/1010 cut-off events. For 55569/55569 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5035 event pairs, 142 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 6132. Up to 959 conditions per place. [2024-06-28 03:12:00,615 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 192 selfloop transitions, 17 changer transitions 0/211 dead transitions. [2024-06-28 03:12:00,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 211 transitions, 2440 flow [2024-06-28 03:12:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-28 03:12:00,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-28 03:12:00,616 INFO L175 Difference]: Start difference. First operand has 207 places, 198 transitions, 1944 flow. Second operand 10 states and 96 transitions. [2024-06-28 03:12:00,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 211 transitions, 2440 flow [2024-06-28 03:12:00,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 211 transitions, 2294 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:12:00,776 INFO L231 Difference]: Finished difference. Result has 210 places, 199 transitions, 1862 flow [2024-06-28 03:12:00,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1862, PETRI_PLACES=210, PETRI_TRANSITIONS=199} [2024-06-28 03:12:00,777 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 181 predicate places. [2024-06-28 03:12:00,777 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 199 transitions, 1862 flow [2024-06-28 03:12:00,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:00,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:00,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:00,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:12:00,777 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:00,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:00,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1888744106, now seen corresponding path program 9 times [2024-06-28 03:12:00,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:00,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976174319] [2024-06-28 03:12:00,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:00,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:01,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:01,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976174319] [2024-06-28 03:12:01,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976174319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:01,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:01,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:01,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842274802] [2024-06-28 03:12:01,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:01,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:01,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:01,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:01,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:01,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:01,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 199 transitions, 1862 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:01,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:01,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:01,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:01,843 INFO L124 PetriNetUnfolderBase]: 572/1013 cut-off events. [2024-06-28 03:12:01,843 INFO L125 PetriNetUnfolderBase]: For 54365/54365 co-relation queries the response was YES. [2024-06-28 03:12:01,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6068 conditions, 1013 events. 572/1013 cut-off events. For 54365/54365 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5075 event pairs, 80 based on Foata normal form. 2/1014 useless extension candidates. Maximal degree in co-relation 5969. Up to 874 conditions per place. [2024-06-28 03:12:01,851 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 168 selfloop transitions, 45 changer transitions 0/215 dead transitions. [2024-06-28 03:12:01,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 215 transitions, 2380 flow [2024-06-28 03:12:01,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:01,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:12:01,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:12:01,852 INFO L175 Difference]: Start difference. First operand has 210 places, 199 transitions, 1862 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:12:01,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 215 transitions, 2380 flow [2024-06-28 03:12:01,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 215 transitions, 2326 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:01,990 INFO L231 Difference]: Finished difference. Result has 212 places, 201 transitions, 1959 flow [2024-06-28 03:12:01,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1959, PETRI_PLACES=212, PETRI_TRANSITIONS=201} [2024-06-28 03:12:01,991 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2024-06-28 03:12:01,991 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 201 transitions, 1959 flow [2024-06-28 03:12:01,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:01,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:01,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:01,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:12:01,992 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:01,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1427277511, now seen corresponding path program 5 times [2024-06-28 03:12:01,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:01,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700254926] [2024-06-28 03:12:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:01,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:02,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700254926] [2024-06-28 03:12:02,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700254926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:02,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:02,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:02,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913780425] [2024-06-28 03:12:02,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:02,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:02,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:02,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:02,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 201 transitions, 1959 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:02,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:02,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:02,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:03,055 INFO L124 PetriNetUnfolderBase]: 576/1021 cut-off events. [2024-06-28 03:12:03,055 INFO L125 PetriNetUnfolderBase]: For 56100/56100 co-relation queries the response was YES. [2024-06-28 03:12:03,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6205 conditions, 1021 events. 576/1021 cut-off events. For 56100/56100 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5141 event pairs, 105 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 6105. Up to 927 conditions per place. [2024-06-28 03:12:03,063 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 173 selfloop transitions, 38 changer transitions 0/213 dead transitions. [2024-06-28 03:12:03,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 213 transitions, 2487 flow [2024-06-28 03:12:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:03,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 03:12:03,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-28 03:12:03,064 INFO L175 Difference]: Start difference. First operand has 212 places, 201 transitions, 1959 flow. Second operand 9 states and 94 transitions. [2024-06-28 03:12:03,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 213 transitions, 2487 flow [2024-06-28 03:12:03,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 213 transitions, 2352 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:03,209 INFO L231 Difference]: Finished difference. Result has 213 places, 202 transitions, 1932 flow [2024-06-28 03:12:03,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1932, PETRI_PLACES=213, PETRI_TRANSITIONS=202} [2024-06-28 03:12:03,209 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2024-06-28 03:12:03,209 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 202 transitions, 1932 flow [2024-06-28 03:12:03,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:03,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:03,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:03,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:12:03,210 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:03,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:03,210 INFO L85 PathProgramCache]: Analyzing trace with hash 886788438, now seen corresponding path program 10 times [2024-06-28 03:12:03,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:03,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95677571] [2024-06-28 03:12:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:03,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:04,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:04,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95677571] [2024-06-28 03:12:04,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95677571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:04,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:04,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:04,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264594236] [2024-06-28 03:12:04,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:04,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:04,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:04,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:04,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:04,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:04,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 202 transitions, 1932 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:04,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:04,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:04,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:04,555 INFO L124 PetriNetUnfolderBase]: 572/1015 cut-off events. [2024-06-28 03:12:04,556 INFO L125 PetriNetUnfolderBase]: For 52235/52235 co-relation queries the response was YES. [2024-06-28 03:12:04,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 1015 events. 572/1015 cut-off events. For 52235/52235 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5119 event pairs, 98 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 5877. Up to 739 conditions per place. [2024-06-28 03:12:04,563 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 152 selfloop transitions, 64 changer transitions 0/218 dead transitions. [2024-06-28 03:12:04,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 218 transitions, 2464 flow [2024-06-28 03:12:04,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:04,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:12:04,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-28 03:12:04,564 INFO L175 Difference]: Start difference. First operand has 213 places, 202 transitions, 1932 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:12:04,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 218 transitions, 2464 flow [2024-06-28 03:12:04,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 218 transitions, 2348 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:12:04,689 INFO L231 Difference]: Finished difference. Result has 216 places, 202 transitions, 1949 flow [2024-06-28 03:12:04,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1949, PETRI_PLACES=216, PETRI_TRANSITIONS=202} [2024-06-28 03:12:04,689 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2024-06-28 03:12:04,690 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 202 transitions, 1949 flow [2024-06-28 03:12:04,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:04,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:04,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:04,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:12:04,690 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:04,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:04,690 INFO L85 PathProgramCache]: Analyzing trace with hash 551417464, now seen corresponding path program 11 times [2024-06-28 03:12:04,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:04,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496707565] [2024-06-28 03:12:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:04,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:05,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:05,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496707565] [2024-06-28 03:12:05,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496707565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:05,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:05,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:05,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193274258] [2024-06-28 03:12:05,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:05,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:05,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:05,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:05,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 202 transitions, 1949 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:05,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:05,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:05,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:06,243 INFO L124 PetriNetUnfolderBase]: 576/1022 cut-off events. [2024-06-28 03:12:06,243 INFO L125 PetriNetUnfolderBase]: For 53716/53716 co-relation queries the response was YES. [2024-06-28 03:12:06,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 1022 events. 576/1022 cut-off events. For 53716/53716 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5143 event pairs, 93 based on Foata normal form. 2/1023 useless extension candidates. Maximal degree in co-relation 6006. Up to 940 conditions per place. [2024-06-28 03:12:06,250 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 193 selfloop transitions, 26 changer transitions 0/221 dead transitions. [2024-06-28 03:12:06,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 221 transitions, 2475 flow [2024-06-28 03:12:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:06,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:12:06,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:12:06,251 INFO L175 Difference]: Start difference. First operand has 216 places, 202 transitions, 1949 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:12:06,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 221 transitions, 2475 flow [2024-06-28 03:12:06,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 221 transitions, 2320 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:12:06,397 INFO L231 Difference]: Finished difference. Result has 216 places, 203 transitions, 1888 flow [2024-06-28 03:12:06,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1888, PETRI_PLACES=216, PETRI_TRANSITIONS=203} [2024-06-28 03:12:06,397 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2024-06-28 03:12:06,397 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 203 transitions, 1888 flow [2024-06-28 03:12:06,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:06,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:06,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:06,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:12:06,398 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:06,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1336416836, now seen corresponding path program 12 times [2024-06-28 03:12:06,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:06,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970442120] [2024-06-28 03:12:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:06,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:07,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:07,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970442120] [2024-06-28 03:12:07,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970442120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:07,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:07,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:07,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419943982] [2024-06-28 03:12:07,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:07,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:07,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:07,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:07,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:07,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 203 transitions, 1888 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:07,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:07,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:07,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:07,686 INFO L124 PetriNetUnfolderBase]: 573/1017 cut-off events. [2024-06-28 03:12:07,687 INFO L125 PetriNetUnfolderBase]: For 49877/49877 co-relation queries the response was YES. [2024-06-28 03:12:07,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5805 conditions, 1017 events. 573/1017 cut-off events. For 49877/49877 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5120 event pairs, 97 based on Foata normal form. 2/1018 useless extension candidates. Maximal degree in co-relation 5702. Up to 935 conditions per place. [2024-06-28 03:12:07,698 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 192 selfloop transitions, 27 changer transitions 0/221 dead transitions. [2024-06-28 03:12:07,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 221 transitions, 2375 flow [2024-06-28 03:12:07,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:07,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:12:07,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:12:07,699 INFO L175 Difference]: Start difference. First operand has 216 places, 203 transitions, 1888 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:12:07,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 221 transitions, 2375 flow [2024-06-28 03:12:07,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 221 transitions, 2279 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:07,871 INFO L231 Difference]: Finished difference. Result has 218 places, 203 transitions, 1850 flow [2024-06-28 03:12:07,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1850, PETRI_PLACES=218, PETRI_TRANSITIONS=203} [2024-06-28 03:12:07,871 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 189 predicate places. [2024-06-28 03:12:07,871 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 203 transitions, 1850 flow [2024-06-28 03:12:07,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:07,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:07,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:07,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:12:07,872 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:07,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:07,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2076149437, now seen corresponding path program 6 times [2024-06-28 03:12:07,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:07,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978190093] [2024-06-28 03:12:07,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:07,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:08,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:08,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978190093] [2024-06-28 03:12:08,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978190093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:08,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:08,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:08,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709972104] [2024-06-28 03:12:08,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:08,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:08,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:08,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:08,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:08,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:08,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 203 transitions, 1850 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:08,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:08,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:08,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:09,236 INFO L124 PetriNetUnfolderBase]: 570/1012 cut-off events. [2024-06-28 03:12:09,236 INFO L125 PetriNetUnfolderBase]: For 44139/44139 co-relation queries the response was YES. [2024-06-28 03:12:09,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5542 conditions, 1012 events. 570/1012 cut-off events. For 44139/44139 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5107 event pairs, 112 based on Foata normal form. 2/1013 useless extension candidates. Maximal degree in co-relation 5438. Up to 972 conditions per place. [2024-06-28 03:12:09,244 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 196 selfloop transitions, 19 changer transitions 0/217 dead transitions. [2024-06-28 03:12:09,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 217 transitions, 2318 flow [2024-06-28 03:12:09,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:09,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:12:09,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-28 03:12:09,245 INFO L175 Difference]: Start difference. First operand has 218 places, 203 transitions, 1850 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:12:09,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 217 transitions, 2318 flow [2024-06-28 03:12:09,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 217 transitions, 2186 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 03:12:09,406 INFO L231 Difference]: Finished difference. Result has 219 places, 203 transitions, 1760 flow [2024-06-28 03:12:09,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1760, PETRI_PLACES=219, PETRI_TRANSITIONS=203} [2024-06-28 03:12:09,406 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-28 03:12:09,406 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 203 transitions, 1760 flow [2024-06-28 03:12:09,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:09,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:09,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:09,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:12:09,407 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:09,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:09,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1738392233, now seen corresponding path program 1 times [2024-06-28 03:12:09,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:09,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380775149] [2024-06-28 03:12:09,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:09,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:10,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:10,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380775149] [2024-06-28 03:12:10,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380775149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:10,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:10,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:10,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177483269] [2024-06-28 03:12:10,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:10,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:10,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:10,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:10,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:10,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:10,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 203 transitions, 1760 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:10,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:10,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:10,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:10,831 INFO L124 PetriNetUnfolderBase]: 574/1020 cut-off events. [2024-06-28 03:12:10,831 INFO L125 PetriNetUnfolderBase]: For 44780/44780 co-relation queries the response was YES. [2024-06-28 03:12:10,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5475 conditions, 1020 events. 574/1020 cut-off events. For 44780/44780 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5160 event pairs, 95 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 5370. Up to 915 conditions per place. [2024-06-28 03:12:10,842 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 195 selfloop transitions, 24 changer transitions 0/221 dead transitions. [2024-06-28 03:12:10,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 221 transitions, 2266 flow [2024-06-28 03:12:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:10,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 03:12:10,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:12:10,843 INFO L175 Difference]: Start difference. First operand has 219 places, 203 transitions, 1760 flow. Second operand 10 states and 100 transitions. [2024-06-28 03:12:10,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 221 transitions, 2266 flow [2024-06-28 03:12:11,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 221 transitions, 2103 flow, removed 18 selfloop flow, removed 13 redundant places. [2024-06-28 03:12:11,006 INFO L231 Difference]: Finished difference. Result has 216 places, 204 transitions, 1679 flow [2024-06-28 03:12:11,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1679, PETRI_PLACES=216, PETRI_TRANSITIONS=204} [2024-06-28 03:12:11,007 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2024-06-28 03:12:11,007 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 204 transitions, 1679 flow [2024-06-28 03:12:11,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:11,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:11,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:11,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:12:11,008 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:11,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:11,008 INFO L85 PathProgramCache]: Analyzing trace with hash -795599703, now seen corresponding path program 2 times [2024-06-28 03:12:11,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:11,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997470094] [2024-06-28 03:12:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:11,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:12,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:12,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997470094] [2024-06-28 03:12:12,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997470094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:12,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:12,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:12,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746360256] [2024-06-28 03:12:12,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:12,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:12,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:12,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:12,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:12,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 204 transitions, 1679 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:12,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:12,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:12,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:12,502 INFO L124 PetriNetUnfolderBase]: 578/1028 cut-off events. [2024-06-28 03:12:12,503 INFO L125 PetriNetUnfolderBase]: For 45670/45670 co-relation queries the response was YES. [2024-06-28 03:12:12,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5403 conditions, 1028 events. 578/1028 cut-off events. For 45670/45670 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5230 event pairs, 84 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 5301. Up to 880 conditions per place. [2024-06-28 03:12:12,515 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 181 selfloop transitions, 39 changer transitions 0/222 dead transitions. [2024-06-28 03:12:12,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 222 transitions, 2191 flow [2024-06-28 03:12:12,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:12,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:12:12,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-28 03:12:12,517 INFO L175 Difference]: Start difference. First operand has 216 places, 204 transitions, 1679 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:12:12,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 222 transitions, 2191 flow [2024-06-28 03:12:12,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 222 transitions, 2090 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 03:12:12,654 INFO L231 Difference]: Finished difference. Result has 217 places, 205 transitions, 1694 flow [2024-06-28 03:12:12,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1694, PETRI_PLACES=217, PETRI_TRANSITIONS=205} [2024-06-28 03:12:12,654 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-28 03:12:12,654 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 205 transitions, 1694 flow [2024-06-28 03:12:12,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:12,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:12,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:12,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:12:12,655 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:12,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1796600003, now seen corresponding path program 3 times [2024-06-28 03:12:12,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:12,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13688436] [2024-06-28 03:12:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:12,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:13,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:13,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13688436] [2024-06-28 03:12:13,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13688436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:13,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:13,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:13,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787299600] [2024-06-28 03:12:13,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:13,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:13,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:13,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:13,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:13,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:13,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 205 transitions, 1694 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:13,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:13,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:13,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:14,184 INFO L124 PetriNetUnfolderBase]: 589/1049 cut-off events. [2024-06-28 03:12:14,184 INFO L125 PetriNetUnfolderBase]: For 55050/55050 co-relation queries the response was YES. [2024-06-28 03:12:14,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5703 conditions, 1049 events. 589/1049 cut-off events. For 55050/55050 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5366 event pairs, 88 based on Foata normal form. 2/1050 useless extension candidates. Maximal degree in co-relation 5601. Up to 880 conditions per place. [2024-06-28 03:12:14,190 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 178 selfloop transitions, 45 changer transitions 0/225 dead transitions. [2024-06-28 03:12:14,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 225 transitions, 2402 flow [2024-06-28 03:12:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:14,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:12:14,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:12:14,191 INFO L175 Difference]: Start difference. First operand has 217 places, 205 transitions, 1694 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:12:14,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 225 transitions, 2402 flow [2024-06-28 03:12:14,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 225 transitions, 2300 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:14,356 INFO L231 Difference]: Finished difference. Result has 219 places, 207 transitions, 1752 flow [2024-06-28 03:12:14,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=219, PETRI_TRANSITIONS=207} [2024-06-28 03:12:14,356 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-28 03:12:14,356 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 207 transitions, 1752 flow [2024-06-28 03:12:14,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:14,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:14,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:14,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:12:14,357 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:14,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:14,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1796604653, now seen corresponding path program 4 times [2024-06-28 03:12:14,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:14,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617657867] [2024-06-28 03:12:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:14,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:15,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:15,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617657867] [2024-06-28 03:12:15,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617657867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:15,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:15,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:15,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050745030] [2024-06-28 03:12:15,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:15,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:15,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:15,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:15,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:15,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:15,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 207 transitions, 1752 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:15,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:15,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:15,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:15,713 INFO L124 PetriNetUnfolderBase]: 586/1044 cut-off events. [2024-06-28 03:12:15,713 INFO L125 PetriNetUnfolderBase]: For 50368/50368 co-relation queries the response was YES. [2024-06-28 03:12:15,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5508 conditions, 1044 events. 586/1044 cut-off events. For 50368/50368 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5364 event pairs, 89 based on Foata normal form. 2/1045 useless extension candidates. Maximal degree in co-relation 5405. Up to 898 conditions per place. [2024-06-28 03:12:15,722 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 177 selfloop transitions, 45 changer transitions 0/224 dead transitions. [2024-06-28 03:12:15,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 224 transitions, 2242 flow [2024-06-28 03:12:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:12:15,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:12:15,724 INFO L175 Difference]: Start difference. First operand has 219 places, 207 transitions, 1752 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:12:15,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 224 transitions, 2242 flow [2024-06-28 03:12:15,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 224 transitions, 2122 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:12:15,909 INFO L231 Difference]: Finished difference. Result has 223 places, 207 transitions, 1729 flow [2024-06-28 03:12:15,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1729, PETRI_PLACES=223, PETRI_TRANSITIONS=207} [2024-06-28 03:12:15,910 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 194 predicate places. [2024-06-28 03:12:15,910 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 207 transitions, 1729 flow [2024-06-28 03:12:15,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:15,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:15,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:15,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:12:15,910 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:15,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:15,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1796604839, now seen corresponding path program 1 times [2024-06-28 03:12:15,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:15,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245682788] [2024-06-28 03:12:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:15,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:17,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:17,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245682788] [2024-06-28 03:12:17,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245682788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:17,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:17,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:17,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587311209] [2024-06-28 03:12:17,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:17,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:17,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:17,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:17,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:17,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:17,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 207 transitions, 1729 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:17,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:17,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:17,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:17,552 INFO L124 PetriNetUnfolderBase]: 582/1038 cut-off events. [2024-06-28 03:12:17,553 INFO L125 PetriNetUnfolderBase]: For 44564/44564 co-relation queries the response was YES. [2024-06-28 03:12:17,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5267 conditions, 1038 events. 582/1038 cut-off events. For 44564/44564 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5342 event pairs, 88 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 5162. Up to 882 conditions per place. [2024-06-28 03:12:17,560 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 172 selfloop transitions, 52 changer transitions 0/226 dead transitions. [2024-06-28 03:12:17,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 226 transitions, 2275 flow [2024-06-28 03:12:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:17,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:12:17,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:12:17,561 INFO L175 Difference]: Start difference. First operand has 223 places, 207 transitions, 1729 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:12:17,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 226 transitions, 2275 flow [2024-06-28 03:12:17,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 226 transitions, 2162 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:12:17,688 INFO L231 Difference]: Finished difference. Result has 224 places, 209 transitions, 1786 flow [2024-06-28 03:12:17,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1786, PETRI_PLACES=224, PETRI_TRANSITIONS=209} [2024-06-28 03:12:17,688 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2024-06-28 03:12:17,688 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 209 transitions, 1786 flow [2024-06-28 03:12:17,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:17,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:17,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:17,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:12:17,689 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:17,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash 193732041, now seen corresponding path program 1 times [2024-06-28 03:12:17,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:17,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034936504] [2024-06-28 03:12:17,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:17,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:18,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:18,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:18,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034936504] [2024-06-28 03:12:18,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034936504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:18,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:18,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:18,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117588177] [2024-06-28 03:12:18,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:18,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:18,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:18,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:18,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:18,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:18,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 209 transitions, 1786 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:18,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:18,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:18,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:19,232 INFO L124 PetriNetUnfolderBase]: 602/1082 cut-off events. [2024-06-28 03:12:19,232 INFO L125 PetriNetUnfolderBase]: For 68850/68850 co-relation queries the response was YES. [2024-06-28 03:12:19,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 1082 events. 602/1082 cut-off events. For 68850/68850 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5632 event pairs, 88 based on Foata normal form. 10/1091 useless extension candidates. Maximal degree in co-relation 5396. Up to 895 conditions per place. [2024-06-28 03:12:19,239 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 184 selfloop transitions, 29 changer transitions 19/234 dead transitions. [2024-06-28 03:12:19,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 234 transitions, 2374 flow [2024-06-28 03:12:19,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:12:19,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-28 03:12:19,240 INFO L175 Difference]: Start difference. First operand has 224 places, 209 transitions, 1786 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:12:19,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 234 transitions, 2374 flow [2024-06-28 03:12:19,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 234 transitions, 2222 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:19,392 INFO L231 Difference]: Finished difference. Result has 227 places, 201 transitions, 1615 flow [2024-06-28 03:12:19,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1615, PETRI_PLACES=227, PETRI_TRANSITIONS=201} [2024-06-28 03:12:19,392 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 198 predicate places. [2024-06-28 03:12:19,393 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 201 transitions, 1615 flow [2024-06-28 03:12:19,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:19,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:19,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:19,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:12:19,393 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:19,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:19,393 INFO L85 PathProgramCache]: Analyzing trace with hash -508120339, now seen corresponding path program 5 times [2024-06-28 03:12:19,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:19,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377571204] [2024-06-28 03:12:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:19,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:20,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:20,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377571204] [2024-06-28 03:12:20,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377571204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:20,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060581484] [2024-06-28 03:12:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:20,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:20,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:20,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 201 transitions, 1615 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:20,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:20,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:20,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:20,763 INFO L124 PetriNetUnfolderBase]: 570/1034 cut-off events. [2024-06-28 03:12:20,763 INFO L125 PetriNetUnfolderBase]: For 77708/77708 co-relation queries the response was YES. [2024-06-28 03:12:20,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5228 conditions, 1034 events. 570/1034 cut-off events. For 77708/77708 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5370 event pairs, 95 based on Foata normal form. 12/1045 useless extension candidates. Maximal degree in co-relation 5121. Up to 848 conditions per place. [2024-06-28 03:12:20,772 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 173 selfloop transitions, 38 changer transitions 8/221 dead transitions. [2024-06-28 03:12:20,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 221 transitions, 2187 flow [2024-06-28 03:12:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:20,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:12:20,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-28 03:12:20,773 INFO L175 Difference]: Start difference. First operand has 227 places, 201 transitions, 1615 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:12:20,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 221 transitions, 2187 flow [2024-06-28 03:12:20,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 221 transitions, 2103 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 03:12:20,921 INFO L231 Difference]: Finished difference. Result has 222 places, 198 transitions, 1621 flow [2024-06-28 03:12:20,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1621, PETRI_PLACES=222, PETRI_TRANSITIONS=198} [2024-06-28 03:12:20,922 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2024-06-28 03:12:20,922 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 198 transitions, 1621 flow [2024-06-28 03:12:20,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:20,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:20,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:20,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:12:20,923 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:20,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:20,923 INFO L85 PathProgramCache]: Analyzing trace with hash -507874385, now seen corresponding path program 2 times [2024-06-28 03:12:20,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:20,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484679465] [2024-06-28 03:12:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:20,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:21,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:21,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484679465] [2024-06-28 03:12:21,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484679465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:21,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:21,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:21,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765900854] [2024-06-28 03:12:21,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:21,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:21,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:21,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:21,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:21,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:21,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 198 transitions, 1621 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:21,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:21,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:21,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:22,018 INFO L124 PetriNetUnfolderBase]: 586/1074 cut-off events. [2024-06-28 03:12:22,018 INFO L125 PetriNetUnfolderBase]: For 100501/100501 co-relation queries the response was YES. [2024-06-28 03:12:22,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6400 conditions, 1074 events. 586/1074 cut-off events. For 100501/100501 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5601 event pairs, 107 based on Foata normal form. 8/1081 useless extension candidates. Maximal degree in co-relation 6295. Up to 796 conditions per place. [2024-06-28 03:12:22,032 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 179 selfloop transitions, 31 changer transitions 10/222 dead transitions. [2024-06-28 03:12:22,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 222 transitions, 2391 flow [2024-06-28 03:12:22,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:12:22,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:12:22,033 INFO L175 Difference]: Start difference. First operand has 222 places, 198 transitions, 1621 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:12:22,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 222 transitions, 2391 flow [2024-06-28 03:12:22,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 222 transitions, 2286 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:22,256 INFO L231 Difference]: Finished difference. Result has 224 places, 193 transitions, 1549 flow [2024-06-28 03:12:22,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1549, PETRI_PLACES=224, PETRI_TRANSITIONS=193} [2024-06-28 03:12:22,257 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2024-06-28 03:12:22,257 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 193 transitions, 1549 flow [2024-06-28 03:12:22,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:22,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:22,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:22,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:12:22,257 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:22,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:22,258 INFO L85 PathProgramCache]: Analyzing trace with hash -605942719, now seen corresponding path program 6 times [2024-06-28 03:12:22,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:22,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302210850] [2024-06-28 03:12:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:22,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:23,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302210850] [2024-06-28 03:12:23,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302210850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:23,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:23,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:23,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143343760] [2024-06-28 03:12:23,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:23,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:23,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:23,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:23,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:23,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 193 transitions, 1549 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:23,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:23,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:23,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:23,950 INFO L124 PetriNetUnfolderBase]: 564/1028 cut-off events. [2024-06-28 03:12:23,950 INFO L125 PetriNetUnfolderBase]: For 85047/85047 co-relation queries the response was YES. [2024-06-28 03:12:23,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6221 conditions, 1028 events. 564/1028 cut-off events. For 85047/85047 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5306 event pairs, 89 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 6115. Up to 746 conditions per place. [2024-06-28 03:12:23,959 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 134 selfloop transitions, 74 changer transitions 0/210 dead transitions. [2024-06-28 03:12:23,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 210 transitions, 2045 flow [2024-06-28 03:12:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:12:23,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-28 03:12:23,960 INFO L175 Difference]: Start difference. First operand has 224 places, 193 transitions, 1549 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:12:23,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 210 transitions, 2045 flow [2024-06-28 03:12:24,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 210 transitions, 1983 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:12:24,154 INFO L231 Difference]: Finished difference. Result has 218 places, 194 transitions, 1678 flow [2024-06-28 03:12:24,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1678, PETRI_PLACES=218, PETRI_TRANSITIONS=194} [2024-06-28 03:12:24,155 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 189 predicate places. [2024-06-28 03:12:24,155 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 194 transitions, 1678 flow [2024-06-28 03:12:24,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:24,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:24,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:24,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:12:24,156 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:24,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash -685256509, now seen corresponding path program 7 times [2024-06-28 03:12:24,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:24,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834517116] [2024-06-28 03:12:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:24,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:25,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:25,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834517116] [2024-06-28 03:12:25,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834517116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:25,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:25,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:25,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272074431] [2024-06-28 03:12:25,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:25,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:25,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:25,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:25,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:25,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:25,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 194 transitions, 1678 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:25,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:25,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:25,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:25,521 INFO L124 PetriNetUnfolderBase]: 568/1036 cut-off events. [2024-06-28 03:12:25,521 INFO L125 PetriNetUnfolderBase]: For 80064/80064 co-relation queries the response was YES. [2024-06-28 03:12:25,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6389 conditions, 1036 events. 568/1036 cut-off events. For 80064/80064 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5379 event pairs, 89 based on Foata normal form. 2/1037 useless extension candidates. Maximal degree in co-relation 6286. Up to 738 conditions per place. [2024-06-28 03:12:25,529 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 135 selfloop transitions, 74 changer transitions 0/211 dead transitions. [2024-06-28 03:12:25,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 211 transitions, 2176 flow [2024-06-28 03:12:25,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:12:25,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:12:25,531 INFO L175 Difference]: Start difference. First operand has 218 places, 194 transitions, 1678 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:12:25,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 211 transitions, 2176 flow [2024-06-28 03:12:25,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 211 transitions, 1997 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:25,760 INFO L231 Difference]: Finished difference. Result has 220 places, 195 transitions, 1691 flow [2024-06-28 03:12:25,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1691, PETRI_PLACES=220, PETRI_TRANSITIONS=195} [2024-06-28 03:12:25,761 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-28 03:12:25,761 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 195 transitions, 1691 flow [2024-06-28 03:12:25,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:25,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:25,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:25,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:12:25,762 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:25,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:25,762 INFO L85 PathProgramCache]: Analyzing trace with hash -508113395, now seen corresponding path program 3 times [2024-06-28 03:12:25,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:25,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879170042] [2024-06-28 03:12:25,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:25,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:26,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:26,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879170042] [2024-06-28 03:12:26,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879170042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:26,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:26,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:26,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798151199] [2024-06-28 03:12:26,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:26,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:26,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:26,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:26,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:26,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 195 transitions, 1691 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:26,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:26,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:26,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:27,104 INFO L124 PetriNetUnfolderBase]: 584/1072 cut-off events. [2024-06-28 03:12:27,104 INFO L125 PetriNetUnfolderBase]: For 102636/102636 co-relation queries the response was YES. [2024-06-28 03:12:27,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6538 conditions, 1072 events. 584/1072 cut-off events. For 102636/102636 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5605 event pairs, 119 based on Foata normal form. 10/1081 useless extension candidates. Maximal degree in co-relation 6434. Up to 900 conditions per place. [2024-06-28 03:12:27,112 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 168 selfloop transitions, 23 changer transitions 23/216 dead transitions. [2024-06-28 03:12:27,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 216 transitions, 2221 flow [2024-06-28 03:12:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:12:27,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-28 03:12:27,113 INFO L175 Difference]: Start difference. First operand has 220 places, 195 transitions, 1691 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:12:27,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 216 transitions, 2221 flow [2024-06-28 03:12:27,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 216 transitions, 2039 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:27,323 INFO L231 Difference]: Finished difference. Result has 223 places, 182 transitions, 1456 flow [2024-06-28 03:12:27,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1456, PETRI_PLACES=223, PETRI_TRANSITIONS=182} [2024-06-28 03:12:27,324 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 194 predicate places. [2024-06-28 03:12:27,324 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 182 transitions, 1456 flow [2024-06-28 03:12:27,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:27,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:27,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:27,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:12:27,324 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:27,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:27,325 INFO L85 PathProgramCache]: Analyzing trace with hash -514549429, now seen corresponding path program 8 times [2024-06-28 03:12:27,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:27,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16128872] [2024-06-28 03:12:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:27,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:28,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:28,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16128872] [2024-06-28 03:12:28,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16128872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:28,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:28,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:28,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168800156] [2024-06-28 03:12:28,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:28,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:28,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:28,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 182 transitions, 1456 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:28,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:28,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:28,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:28,582 INFO L124 PetriNetUnfolderBase]: 531/973 cut-off events. [2024-06-28 03:12:28,583 INFO L125 PetriNetUnfolderBase]: For 76531/76531 co-relation queries the response was YES. [2024-06-28 03:12:28,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5742 conditions, 973 events. 531/973 cut-off events. For 76531/76531 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4979 event pairs, 110 based on Foata normal form. 2/974 useless extension candidates. Maximal degree in co-relation 5637. Up to 887 conditions per place. [2024-06-28 03:12:28,595 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 168 selfloop transitions, 28 changer transitions 0/198 dead transitions. [2024-06-28 03:12:28,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 198 transitions, 1928 flow [2024-06-28 03:12:28,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 03:12:28,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2024-06-28 03:12:28,596 INFO L175 Difference]: Start difference. First operand has 223 places, 182 transitions, 1456 flow. Second operand 10 states and 101 transitions. [2024-06-28 03:12:28,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 198 transitions, 1928 flow [2024-06-28 03:12:28,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 198 transitions, 1866 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 03:12:28,762 INFO L231 Difference]: Finished difference. Result has 214 places, 183 transitions, 1497 flow [2024-06-28 03:12:28,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1497, PETRI_PLACES=214, PETRI_TRANSITIONS=183} [2024-06-28 03:12:28,763 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-28 03:12:28,763 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 183 transitions, 1497 flow [2024-06-28 03:12:28,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:28,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:28,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:28,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:12:28,763 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:28,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:28,764 INFO L85 PathProgramCache]: Analyzing trace with hash -514369505, now seen corresponding path program 4 times [2024-06-28 03:12:28,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:28,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540564109] [2024-06-28 03:12:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:28,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:29,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:29,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540564109] [2024-06-28 03:12:29,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540564109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:29,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:29,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:29,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304035730] [2024-06-28 03:12:29,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:29,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:29,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:29,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:29,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 183 transitions, 1497 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:29,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:29,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:29,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:29,979 INFO L124 PetriNetUnfolderBase]: 518/950 cut-off events. [2024-06-28 03:12:29,979 INFO L125 PetriNetUnfolderBase]: For 64920/64920 co-relation queries the response was YES. [2024-06-28 03:12:29,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4821 conditions, 950 events. 518/950 cut-off events. For 64920/64920 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4855 event pairs, 97 based on Foata normal form. 10/959 useless extension candidates. Maximal degree in co-relation 4719. Up to 812 conditions per place. [2024-06-28 03:12:29,986 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 163 selfloop transitions, 18 changer transitions 20/203 dead transitions. [2024-06-28 03:12:29,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 203 transitions, 1997 flow [2024-06-28 03:12:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 03:12:29,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-28 03:12:29,988 INFO L175 Difference]: Start difference. First operand has 214 places, 183 transitions, 1497 flow. Second operand 11 states and 111 transitions. [2024-06-28 03:12:29,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 203 transitions, 1997 flow [2024-06-28 03:12:30,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 203 transitions, 1910 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:30,116 INFO L231 Difference]: Finished difference. Result has 217 places, 173 transitions, 1366 flow [2024-06-28 03:12:30,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1366, PETRI_PLACES=217, PETRI_TRANSITIONS=173} [2024-06-28 03:12:30,116 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-28 03:12:30,116 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 173 transitions, 1366 flow [2024-06-28 03:12:30,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:30,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:30,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:30,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:12:30,117 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:30,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash -685371829, now seen corresponding path program 9 times [2024-06-28 03:12:30,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:30,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409155416] [2024-06-28 03:12:30,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:30,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:30,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:30,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409155416] [2024-06-28 03:12:30,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409155416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:30,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:30,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:30,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040069189] [2024-06-28 03:12:30,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:30,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:30,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:30,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:30,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:31,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:31,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 173 transitions, 1366 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:31,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:31,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:31,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:31,401 INFO L124 PetriNetUnfolderBase]: 477/879 cut-off events. [2024-06-28 03:12:31,401 INFO L125 PetriNetUnfolderBase]: For 50416/50416 co-relation queries the response was YES. [2024-06-28 03:12:31,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4698 conditions, 879 events. 477/879 cut-off events. For 50416/50416 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4443 event pairs, 80 based on Foata normal form. 2/880 useless extension candidates. Maximal degree in co-relation 4595. Up to 628 conditions per place. [2024-06-28 03:12:31,411 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 135 selfloop transitions, 55 changer transitions 0/192 dead transitions. [2024-06-28 03:12:31,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 192 transitions, 2018 flow [2024-06-28 03:12:31,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:12:31,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-28 03:12:31,413 INFO L175 Difference]: Start difference. First operand has 217 places, 173 transitions, 1366 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:12:31,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 192 transitions, 2018 flow [2024-06-28 03:12:31,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 192 transitions, 1954 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-28 03:12:31,553 INFO L231 Difference]: Finished difference. Result has 209 places, 175 transitions, 1502 flow [2024-06-28 03:12:31,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1502, PETRI_PLACES=209, PETRI_TRANSITIONS=175} [2024-06-28 03:12:31,554 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-28 03:12:31,554 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 175 transitions, 1502 flow [2024-06-28 03:12:31,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:31,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:31,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:31,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:12:31,555 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:31,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:31,556 INFO L85 PathProgramCache]: Analyzing trace with hash -680603285, now seen corresponding path program 5 times [2024-06-28 03:12:31,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:31,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109916974] [2024-06-28 03:12:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:31,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:32,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:32,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109916974] [2024-06-28 03:12:32,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109916974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:32,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:32,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:32,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966386863] [2024-06-28 03:12:32,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:32,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:32,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:32,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:32,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:32,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:32,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 175 transitions, 1502 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:32,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:32,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:32,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:33,284 INFO L124 PetriNetUnfolderBase]: 493/915 cut-off events. [2024-06-28 03:12:33,285 INFO L125 PetriNetUnfolderBase]: For 67688/67688 co-relation queries the response was YES. [2024-06-28 03:12:33,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4888 conditions, 915 events. 493/915 cut-off events. For 67688/67688 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4688 event pairs, 80 based on Foata normal form. 10/924 useless extension candidates. Maximal degree in co-relation 4788. Up to 647 conditions per place. [2024-06-28 03:12:33,293 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 129 selfloop transitions, 45 changer transitions 21/197 dead transitions. [2024-06-28 03:12:33,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 197 transitions, 1998 flow [2024-06-28 03:12:33,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:12:33,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:12:33,294 INFO L175 Difference]: Start difference. First operand has 209 places, 175 transitions, 1502 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:12:33,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 197 transitions, 1998 flow [2024-06-28 03:12:33,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 197 transitions, 1892 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:12:33,417 INFO L231 Difference]: Finished difference. Result has 214 places, 164 transitions, 1415 flow [2024-06-28 03:12:33,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1415, PETRI_PLACES=214, PETRI_TRANSITIONS=164} [2024-06-28 03:12:33,418 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-28 03:12:33,418 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 164 transitions, 1415 flow [2024-06-28 03:12:33,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:33,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:33,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:33,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:12:33,418 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:33,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:33,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1832266989, now seen corresponding path program 10 times [2024-06-28 03:12:33,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:33,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094251343] [2024-06-28 03:12:33,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:33,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:34,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:34,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094251343] [2024-06-28 03:12:34,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094251343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:34,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:34,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:34,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837826365] [2024-06-28 03:12:34,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:34,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:34,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:34,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:34,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:34,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:34,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 164 transitions, 1415 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:34,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:34,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:34,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:34,556 INFO L124 PetriNetUnfolderBase]: 438/818 cut-off events. [2024-06-28 03:12:34,556 INFO L125 PetriNetUnfolderBase]: For 41677/41677 co-relation queries the response was YES. [2024-06-28 03:12:34,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4307 conditions, 818 events. 438/818 cut-off events. For 41677/41677 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4108 event pairs, 85 based on Foata normal form. 2/819 useless extension candidates. Maximal degree in co-relation 4205. Up to 756 conditions per place. [2024-06-28 03:12:34,563 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 156 selfloop transitions, 20 changer transitions 0/178 dead transitions. [2024-06-28 03:12:34,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 178 transitions, 1801 flow [2024-06-28 03:12:34,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:34,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-28 03:12:34,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-28 03:12:34,564 INFO L175 Difference]: Start difference. First operand has 214 places, 164 transitions, 1415 flow. Second operand 10 states and 96 transitions. [2024-06-28 03:12:34,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 178 transitions, 1801 flow [2024-06-28 03:12:34,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 178 transitions, 1661 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-06-28 03:12:34,675 INFO L231 Difference]: Finished difference. Result has 205 places, 164 transitions, 1319 flow [2024-06-28 03:12:34,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1319, PETRI_PLACES=205, PETRI_TRANSITIONS=164} [2024-06-28 03:12:34,675 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-28 03:12:34,675 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 164 transitions, 1319 flow [2024-06-28 03:12:34,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:34,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:34,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:34,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:12:34,676 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:34,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:34,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1573827309, now seen corresponding path program 11 times [2024-06-28 03:12:34,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:34,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546065492] [2024-06-28 03:12:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:34,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:35,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:35,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546065492] [2024-06-28 03:12:35,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546065492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:35,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:35,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:35,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504473683] [2024-06-28 03:12:35,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:35,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:35,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:35,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:35,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:35,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 164 transitions, 1319 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:35,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:35,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:35,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:36,093 INFO L124 PetriNetUnfolderBase]: 442/827 cut-off events. [2024-06-28 03:12:36,093 INFO L125 PetriNetUnfolderBase]: For 37073/37073 co-relation queries the response was YES. [2024-06-28 03:12:36,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4177 conditions, 827 events. 442/827 cut-off events. For 37073/37073 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4161 event pairs, 76 based on Foata normal form. 2/828 useless extension candidates. Maximal degree in co-relation 4079. Up to 690 conditions per place. [2024-06-28 03:12:36,101 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 133 selfloop transitions, 44 changer transitions 0/179 dead transitions. [2024-06-28 03:12:36,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 179 transitions, 1741 flow [2024-06-28 03:12:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 03:12:36,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3433333333333333 [2024-06-28 03:12:36,102 INFO L175 Difference]: Start difference. First operand has 205 places, 164 transitions, 1319 flow. Second operand 10 states and 103 transitions. [2024-06-28 03:12:36,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 179 transitions, 1741 flow [2024-06-28 03:12:36,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 179 transitions, 1697 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:12:36,226 INFO L231 Difference]: Finished difference. Result has 206 places, 165 transitions, 1399 flow [2024-06-28 03:12:36,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1399, PETRI_PLACES=206, PETRI_TRANSITIONS=165} [2024-06-28 03:12:36,226 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2024-06-28 03:12:36,226 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 165 transitions, 1399 flow [2024-06-28 03:12:36,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:36,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:36,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:36,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:12:36,227 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:36,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1827503561, now seen corresponding path program 12 times [2024-06-28 03:12:36,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:36,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162848266] [2024-06-28 03:12:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:36,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:37,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:37,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162848266] [2024-06-28 03:12:37,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162848266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:37,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:37,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:37,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254974322] [2024-06-28 03:12:37,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:37,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:37,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:37,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:37,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:37,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:37,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 165 transitions, 1399 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:37,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:37,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:37,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:37,499 INFO L124 PetriNetUnfolderBase]: 446/835 cut-off events. [2024-06-28 03:12:37,500 INFO L125 PetriNetUnfolderBase]: For 38780/38780 co-relation queries the response was YES. [2024-06-28 03:12:37,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4338 conditions, 835 events. 446/835 cut-off events. For 38780/38780 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4246 event pairs, 74 based on Foata normal form. 2/836 useless extension candidates. Maximal degree in co-relation 4239. Up to 684 conditions per place. [2024-06-28 03:12:37,505 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 133 selfloop transitions, 45 changer transitions 0/180 dead transitions. [2024-06-28 03:12:37,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 180 transitions, 1823 flow [2024-06-28 03:12:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:12:37,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:12:37,506 INFO L175 Difference]: Start difference. First operand has 206 places, 165 transitions, 1399 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:12:37,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 180 transitions, 1823 flow [2024-06-28 03:12:37,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 180 transitions, 1709 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:37,622 INFO L231 Difference]: Finished difference. Result has 208 places, 166 transitions, 1413 flow [2024-06-28 03:12:37,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1413, PETRI_PLACES=208, PETRI_TRANSITIONS=166} [2024-06-28 03:12:37,622 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 179 predicate places. [2024-06-28 03:12:37,622 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 166 transitions, 1413 flow [2024-06-28 03:12:37,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:37,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:37,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:37,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:12:37,623 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:37,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:37,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1326011619, now seen corresponding path program 13 times [2024-06-28 03:12:37,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:37,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977922769] [2024-06-28 03:12:37,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:37,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:38,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:38,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977922769] [2024-06-28 03:12:38,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977922769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:38,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:38,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:38,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672946205] [2024-06-28 03:12:38,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:38,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:38,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:38,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:38,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:38,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:38,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 166 transitions, 1413 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:38,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:38,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:38,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:38,897 INFO L124 PetriNetUnfolderBase]: 466/879 cut-off events. [2024-06-28 03:12:38,897 INFO L125 PetriNetUnfolderBase]: For 66812/66812 co-relation queries the response was YES. [2024-06-28 03:12:38,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4551 conditions, 879 events. 466/879 cut-off events. For 66812/66812 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4501 event pairs, 85 based on Foata normal form. 12/890 useless extension candidates. Maximal degree in co-relation 4451. Up to 745 conditions per place. [2024-06-28 03:12:38,906 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 147 selfloop transitions, 29 changer transitions 6/184 dead transitions. [2024-06-28 03:12:38,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 184 transitions, 1895 flow [2024-06-28 03:12:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:12:38,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-28 03:12:38,908 INFO L175 Difference]: Start difference. First operand has 208 places, 166 transitions, 1413 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:12:38,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 184 transitions, 1895 flow [2024-06-28 03:12:39,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 184 transitions, 1777 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:39,041 INFO L231 Difference]: Finished difference. Result has 210 places, 165 transitions, 1380 flow [2024-06-28 03:12:39,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1380, PETRI_PLACES=210, PETRI_TRANSITIONS=165} [2024-06-28 03:12:39,041 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 181 predicate places. [2024-06-28 03:12:39,041 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 165 transitions, 1380 flow [2024-06-28 03:12:39,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:39,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:39,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:39,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:12:39,041 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:39,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:39,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1289255583, now seen corresponding path program 14 times [2024-06-28 03:12:39,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:39,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003760468] [2024-06-28 03:12:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:39,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:39,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:39,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003760468] [2024-06-28 03:12:39,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003760468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:39,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:39,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:39,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652071002] [2024-06-28 03:12:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:39,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:39,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:39,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:39,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:40,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:40,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 165 transitions, 1380 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:40,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:40,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:40,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:40,363 INFO L124 PetriNetUnfolderBase]: 446/839 cut-off events. [2024-06-28 03:12:40,363 INFO L125 PetriNetUnfolderBase]: For 41202/41202 co-relation queries the response was YES. [2024-06-28 03:12:40,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 839 events. 446/839 cut-off events. For 41202/41202 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4252 event pairs, 81 based on Foata normal form. 2/840 useless extension candidates. Maximal degree in co-relation 4256. Up to 647 conditions per place. [2024-06-28 03:12:40,370 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 126 selfloop transitions, 53 changer transitions 0/181 dead transitions. [2024-06-28 03:12:40,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 181 transitions, 1848 flow [2024-06-28 03:12:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:12:40,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-28 03:12:40,371 INFO L175 Difference]: Start difference. First operand has 210 places, 165 transitions, 1380 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:12:40,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 181 transitions, 1848 flow [2024-06-28 03:12:40,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 181 transitions, 1760 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:40,502 INFO L231 Difference]: Finished difference. Result has 213 places, 166 transitions, 1440 flow [2024-06-28 03:12:40,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1440, PETRI_PLACES=213, PETRI_TRANSITIONS=166} [2024-06-28 03:12:40,503 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2024-06-28 03:12:40,503 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 166 transitions, 1440 flow [2024-06-28 03:12:40,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:40,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:40,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:40,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:12:40,504 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:40,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:40,504 INFO L85 PathProgramCache]: Analyzing trace with hash 60537857, now seen corresponding path program 6 times [2024-06-28 03:12:40,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:40,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174626184] [2024-06-28 03:12:40,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:40,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:41,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:41,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:41,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174626184] [2024-06-28 03:12:41,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174626184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:41,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:41,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:41,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018233692] [2024-06-28 03:12:41,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:41,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:41,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:41,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:41,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:41,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 166 transitions, 1440 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:41,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:41,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:41,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:41,714 INFO L124 PetriNetUnfolderBase]: 462/875 cut-off events. [2024-06-28 03:12:41,714 INFO L125 PetriNetUnfolderBase]: For 63521/63521 co-relation queries the response was YES. [2024-06-28 03:12:41,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4546 conditions, 875 events. 462/875 cut-off events. For 63521/63521 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4484 event pairs, 85 based on Foata normal form. 10/884 useless extension candidates. Maximal degree in co-relation 4444. Up to 637 conditions per place. [2024-06-28 03:12:41,719 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 124 selfloop transitions, 45 changer transitions 16/187 dead transitions. [2024-06-28 03:12:41,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 187 transitions, 1942 flow [2024-06-28 03:12:41,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:12:41,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-28 03:12:41,720 INFO L175 Difference]: Start difference. First operand has 213 places, 166 transitions, 1440 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:12:41,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 187 transitions, 1942 flow [2024-06-28 03:12:41,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 187 transitions, 1804 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:12:41,840 INFO L231 Difference]: Finished difference. Result has 215 places, 160 transitions, 1362 flow [2024-06-28 03:12:41,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1362, PETRI_PLACES=215, PETRI_TRANSITIONS=160} [2024-06-28 03:12:41,841 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2024-06-28 03:12:41,841 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 160 transitions, 1362 flow [2024-06-28 03:12:41,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:41,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:41,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:41,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:12:41,841 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:41,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:41,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1714198143, now seen corresponding path program 15 times [2024-06-28 03:12:41,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:41,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745931729] [2024-06-28 03:12:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:41,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:42,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:42,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:42,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745931729] [2024-06-28 03:12:42,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745931729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:42,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:42,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:42,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743444394] [2024-06-28 03:12:42,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:42,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:42,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:42,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:42,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:42,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:42,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 160 transitions, 1362 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:42,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:42,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:42,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:43,224 INFO L124 PetriNetUnfolderBase]: 466/887 cut-off events. [2024-06-28 03:12:43,224 INFO L125 PetriNetUnfolderBase]: For 78178/78178 co-relation queries the response was YES. [2024-06-28 03:12:43,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 887 events. 466/887 cut-off events. For 78178/78178 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4542 event pairs, 97 based on Foata normal form. 2/888 useless extension candidates. Maximal degree in co-relation 5484. Up to 621 conditions per place. [2024-06-28 03:12:43,231 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 132 selfloop transitions, 48 changer transitions 0/182 dead transitions. [2024-06-28 03:12:43,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 182 transitions, 2076 flow [2024-06-28 03:12:43,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:43,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:12:43,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-28 03:12:43,232 INFO L175 Difference]: Start difference. First operand has 215 places, 160 transitions, 1362 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:12:43,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 182 transitions, 2076 flow [2024-06-28 03:12:43,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 182 transitions, 1954 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-28 03:12:43,373 INFO L231 Difference]: Finished difference. Result has 209 places, 162 transitions, 1439 flow [2024-06-28 03:12:43,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1439, PETRI_PLACES=209, PETRI_TRANSITIONS=162} [2024-06-28 03:12:43,373 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-28 03:12:43,374 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 162 transitions, 1439 flow [2024-06-28 03:12:43,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:43,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:43,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:43,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:12:43,374 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:43,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:43,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1720631883, now seen corresponding path program 16 times [2024-06-28 03:12:43,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:43,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875001530] [2024-06-28 03:12:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:43,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:44,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:44,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875001530] [2024-06-28 03:12:44,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875001530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:44,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:44,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:44,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699889774] [2024-06-28 03:12:44,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:44,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:44,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:44,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:44,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:44,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:44,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 162 transitions, 1439 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:44,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:44,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:44,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:44,705 INFO L124 PetriNetUnfolderBase]: 486/931 cut-off events. [2024-06-28 03:12:44,705 INFO L125 PetriNetUnfolderBase]: For 97853/97853 co-relation queries the response was YES. [2024-06-28 03:12:44,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 931 events. 486/931 cut-off events. For 97853/97853 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4833 event pairs, 107 based on Foata normal form. 12/942 useless extension candidates. Maximal degree in co-relation 5664. Up to 713 conditions per place. [2024-06-28 03:12:44,712 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 133 selfloop transitions, 43 changer transitions 5/183 dead transitions. [2024-06-28 03:12:44,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 183 transitions, 2002 flow [2024-06-28 03:12:44,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:12:44,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-28 03:12:44,713 INFO L175 Difference]: Start difference. First operand has 209 places, 162 transitions, 1439 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:12:44,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 183 transitions, 2002 flow [2024-06-28 03:12:44,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 183 transitions, 1870 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 03:12:44,891 INFO L231 Difference]: Finished difference. Result has 212 places, 162 transitions, 1429 flow [2024-06-28 03:12:44,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1429, PETRI_PLACES=212, PETRI_TRANSITIONS=162} [2024-06-28 03:12:44,891 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2024-06-28 03:12:44,891 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 162 transitions, 1429 flow [2024-06-28 03:12:44,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:44,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:44,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:44,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:12:44,892 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:44,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1148760129, now seen corresponding path program 17 times [2024-06-28 03:12:44,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:44,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699211549] [2024-06-28 03:12:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:44,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:45,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:45,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699211549] [2024-06-28 03:12:45,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699211549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:45,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:45,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:45,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770657193] [2024-06-28 03:12:45,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:45,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:45,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:45,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:45,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:45,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:45,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 162 transitions, 1429 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:45,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:45,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:45,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:46,247 INFO L124 PetriNetUnfolderBase]: 478/919 cut-off events. [2024-06-28 03:12:46,248 INFO L125 PetriNetUnfolderBase]: For 73823/73823 co-relation queries the response was YES. [2024-06-28 03:12:46,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5678 conditions, 919 events. 478/919 cut-off events. For 73823/73823 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4793 event pairs, 90 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 5576. Up to 426 conditions per place. [2024-06-28 03:12:46,255 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 98 selfloop transitions, 84 changer transitions 0/184 dead transitions. [2024-06-28 03:12:46,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 184 transitions, 2107 flow [2024-06-28 03:12:46,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:12:46,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-28 03:12:46,256 INFO L175 Difference]: Start difference. First operand has 212 places, 162 transitions, 1429 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:12:46,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 184 transitions, 2107 flow [2024-06-28 03:12:46,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 184 transitions, 1997 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:46,431 INFO L231 Difference]: Finished difference. Result has 214 places, 164 transitions, 1569 flow [2024-06-28 03:12:46,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1569, PETRI_PLACES=214, PETRI_TRANSITIONS=164} [2024-06-28 03:12:46,432 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-28 03:12:46,432 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 164 transitions, 1569 flow [2024-06-28 03:12:46,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:46,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:46,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:46,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:12:46,433 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:46,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:46,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1720638827, now seen corresponding path program 7 times [2024-06-28 03:12:46,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:46,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91495382] [2024-06-28 03:12:46,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:46,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:47,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:47,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91495382] [2024-06-28 03:12:47,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91495382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:47,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:47,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:47,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854031184] [2024-06-28 03:12:47,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:47,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:47,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:47,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:47,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:47,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 164 transitions, 1569 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:47,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:47,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:47,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:47,648 INFO L124 PetriNetUnfolderBase]: 494/955 cut-off events. [2024-06-28 03:12:47,648 INFO L125 PetriNetUnfolderBase]: For 97328/97328 co-relation queries the response was YES. [2024-06-28 03:12:47,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5932 conditions, 955 events. 494/955 cut-off events. For 97328/97328 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5046 event pairs, 113 based on Foata normal form. 10/964 useless extension candidates. Maximal degree in co-relation 5829. Up to 711 conditions per place. [2024-06-28 03:12:47,655 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 129 selfloop transitions, 37 changer transitions 16/184 dead transitions. [2024-06-28 03:12:47,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 184 transitions, 2063 flow [2024-06-28 03:12:47,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:47,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:12:47,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:12:47,657 INFO L175 Difference]: Start difference. First operand has 214 places, 164 transitions, 1569 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:12:47,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 184 transitions, 2063 flow [2024-06-28 03:12:47,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 184 transitions, 1792 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:47,839 INFO L231 Difference]: Finished difference. Result has 217 places, 158 transitions, 1362 flow [2024-06-28 03:12:47,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1362, PETRI_PLACES=217, PETRI_TRANSITIONS=158} [2024-06-28 03:12:47,840 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-28 03:12:47,840 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 158 transitions, 1362 flow [2024-06-28 03:12:47,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:47,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:47,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:47,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:12:47,841 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:47,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:47,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1326257573, now seen corresponding path program 8 times [2024-06-28 03:12:47,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:47,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073992940] [2024-06-28 03:12:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:47,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:48,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:48,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073992940] [2024-06-28 03:12:48,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073992940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:48,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:48,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:48,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476712309] [2024-06-28 03:12:48,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:48,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:48,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:48,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:48,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:48,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:48,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 158 transitions, 1362 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:48,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:48,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:48,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:48,998 INFO L124 PetriNetUnfolderBase]: 496/961 cut-off events. [2024-06-28 03:12:48,998 INFO L125 PetriNetUnfolderBase]: For 127286/127286 co-relation queries the response was YES. [2024-06-28 03:12:49,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 961 events. 496/961 cut-off events. For 127286/127286 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5051 event pairs, 119 based on Foata normal form. 8/968 useless extension candidates. Maximal degree in co-relation 6542. Up to 747 conditions per place. [2024-06-28 03:12:49,006 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 145 selfloop transitions, 25 changer transitions 8/180 dead transitions. [2024-06-28 03:12:49,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 180 transitions, 2023 flow [2024-06-28 03:12:49,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:12:49,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-28 03:12:49,007 INFO L175 Difference]: Start difference. First operand has 217 places, 158 transitions, 1362 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:12:49,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 180 transitions, 2023 flow [2024-06-28 03:12:49,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 180 transitions, 1915 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-28 03:12:49,248 INFO L231 Difference]: Finished difference. Result has 209 places, 155 transitions, 1304 flow [2024-06-28 03:12:49,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1304, PETRI_PLACES=209, PETRI_TRANSITIONS=155} [2024-06-28 03:12:49,249 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-28 03:12:49,249 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 155 transitions, 1304 flow [2024-06-28 03:12:49,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:49,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:49,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:49,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:12:49,250 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:49,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:49,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1295930627, now seen corresponding path program 9 times [2024-06-28 03:12:49,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:49,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762242443] [2024-06-28 03:12:49,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:49,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:50,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762242443] [2024-06-28 03:12:50,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762242443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:50,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:50,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:50,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428422315] [2024-06-28 03:12:50,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:50,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:50,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:50,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:50,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:50,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:50,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 155 transitions, 1304 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:50,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:50,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:50,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:50,368 INFO L124 PetriNetUnfolderBase]: 489/948 cut-off events. [2024-06-28 03:12:50,369 INFO L125 PetriNetUnfolderBase]: For 113304/113304 co-relation queries the response was YES. [2024-06-28 03:12:50,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6386 conditions, 948 events. 489/948 cut-off events. For 113304/113304 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4987 event pairs, 123 based on Foata normal form. 8/955 useless extension candidates. Maximal degree in co-relation 6288. Up to 763 conditions per place. [2024-06-28 03:12:50,376 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 122 selfloop transitions, 36 changer transitions 12/172 dead transitions. [2024-06-28 03:12:50,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 172 transitions, 1722 flow [2024-06-28 03:12:50,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:50,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 03:12:50,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-28 03:12:50,377 INFO L175 Difference]: Start difference. First operand has 209 places, 155 transitions, 1304 flow. Second operand 11 states and 114 transitions. [2024-06-28 03:12:50,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 172 transitions, 1722 flow [2024-06-28 03:12:50,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 172 transitions, 1668 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:12:50,608 INFO L231 Difference]: Finished difference. Result has 207 places, 152 transitions, 1308 flow [2024-06-28 03:12:50,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1308, PETRI_PLACES=207, PETRI_TRANSITIONS=152} [2024-06-28 03:12:50,609 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-06-28 03:12:50,609 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 152 transitions, 1308 flow [2024-06-28 03:12:50,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:50,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:50,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:50,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:12:50,609 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:50,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:50,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1153528673, now seen corresponding path program 10 times [2024-06-28 03:12:50,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:50,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160319808] [2024-06-28 03:12:50,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:50,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:51,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:51,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160319808] [2024-06-28 03:12:51,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160319808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:51,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:51,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:51,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326171524] [2024-06-28 03:12:51,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:51,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:51,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:51,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:51,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:51,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:51,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 152 transitions, 1308 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:51,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:51,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:51,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:52,155 INFO L124 PetriNetUnfolderBase]: 485/940 cut-off events. [2024-06-28 03:12:52,155 INFO L125 PetriNetUnfolderBase]: For 112891/112891 co-relation queries the response was YES. [2024-06-28 03:12:52,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6334 conditions, 940 events. 485/940 cut-off events. For 112891/112891 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4916 event pairs, 122 based on Foata normal form. 10/949 useless extension candidates. Maximal degree in co-relation 6238. Up to 753 conditions per place. [2024-06-28 03:12:52,161 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 118 selfloop transitions, 43 changer transitions 7/170 dead transitions. [2024-06-28 03:12:52,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 170 transitions, 1732 flow [2024-06-28 03:12:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:12:52,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-28 03:12:52,162 INFO L175 Difference]: Start difference. First operand has 207 places, 152 transitions, 1308 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:12:52,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 170 transitions, 1732 flow [2024-06-28 03:12:52,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 170 transitions, 1654 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:12:52,357 INFO L231 Difference]: Finished difference. Result has 202 places, 149 transitions, 1304 flow [2024-06-28 03:12:52,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1304, PETRI_PLACES=202, PETRI_TRANSITIONS=149} [2024-06-28 03:12:52,357 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-28 03:12:52,357 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 149 transitions, 1304 flow [2024-06-28 03:12:52,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:52,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:52,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:52,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:12:52,358 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:52,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:52,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1517329713, now seen corresponding path program 18 times [2024-06-28 03:12:52,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:52,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272170231] [2024-06-28 03:12:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:52,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:53,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:53,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272170231] [2024-06-28 03:12:53,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272170231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:53,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:53,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678262877] [2024-06-28 03:12:53,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:53,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:53,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:53,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:53,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:53,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:53,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 149 transitions, 1304 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:53,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:53,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:53,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:53,686 INFO L124 PetriNetUnfolderBase]: 443/861 cut-off events. [2024-06-28 03:12:53,686 INFO L125 PetriNetUnfolderBase]: For 83521/83521 co-relation queries the response was YES. [2024-06-28 03:12:53,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5148 conditions, 861 events. 443/861 cut-off events. For 83521/83521 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4438 event pairs, 130 based on Foata normal form. 12/872 useless extension candidates. Maximal degree in co-relation 5054. Up to 762 conditions per place. [2024-06-28 03:12:53,692 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 138 selfloop transitions, 20 changer transitions 5/165 dead transitions. [2024-06-28 03:12:53,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 165 transitions, 1710 flow [2024-06-28 03:12:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 03:12:53,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:12:53,693 INFO L175 Difference]: Start difference. First operand has 202 places, 149 transitions, 1304 flow. Second operand 11 states and 110 transitions. [2024-06-28 03:12:53,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 165 transitions, 1710 flow [2024-06-28 03:12:53,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 165 transitions, 1592 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-28 03:12:53,851 INFO L231 Difference]: Finished difference. Result has 201 places, 148 transitions, 1226 flow [2024-06-28 03:12:53,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1226, PETRI_PLACES=201, PETRI_TRANSITIONS=148} [2024-06-28 03:12:53,851 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-28 03:12:53,852 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 148 transitions, 1226 flow [2024-06-28 03:12:53,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:53,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:53,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:53,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:12:53,852 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:53,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:53,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1517575667, now seen corresponding path program 11 times [2024-06-28 03:12:53,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:53,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058388055] [2024-06-28 03:12:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:53,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:54,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:54,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058388055] [2024-06-28 03:12:54,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058388055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:54,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:54,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:54,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646611194] [2024-06-28 03:12:54,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:54,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:54,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:54,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:54,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:54,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:54,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 148 transitions, 1226 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:54,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:54,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:54,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:55,013 INFO L124 PetriNetUnfolderBase]: 472/928 cut-off events. [2024-06-28 03:12:55,013 INFO L125 PetriNetUnfolderBase]: For 93576/93576 co-relation queries the response was YES. [2024-06-28 03:12:55,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5902 conditions, 928 events. 472/928 cut-off events. For 93576/93576 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4880 event pairs, 145 based on Foata normal form. 8/935 useless extension candidates. Maximal degree in co-relation 5809. Up to 742 conditions per place. [2024-06-28 03:12:55,019 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 143 selfloop transitions, 14 changer transitions 9/168 dead transitions. [2024-06-28 03:12:55,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 168 transitions, 1802 flow [2024-06-28 03:12:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:55,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:12:55,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:12:55,020 INFO L175 Difference]: Start difference. First operand has 201 places, 148 transitions, 1226 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:12:55,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 168 transitions, 1802 flow [2024-06-28 03:12:55,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 168 transitions, 1756 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:12:55,190 INFO L231 Difference]: Finished difference. Result has 201 places, 144 transitions, 1181 flow [2024-06-28 03:12:55,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1181, PETRI_PLACES=201, PETRI_TRANSITIONS=144} [2024-06-28 03:12:55,190 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-28 03:12:55,190 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 144 transitions, 1181 flow [2024-06-28 03:12:55,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:55,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:55,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:55,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:12:55,191 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:55,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash 952731045, now seen corresponding path program 12 times [2024-06-28 03:12:55,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:55,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376360915] [2024-06-28 03:12:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:55,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:55,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:55,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376360915] [2024-06-28 03:12:55,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376360915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:55,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:55,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:55,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511281498] [2024-06-28 03:12:55,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:55,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:55,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:55,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:55,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:55,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:55,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 144 transitions, 1181 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:55,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:55,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:55,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:56,274 INFO L124 PetriNetUnfolderBase]: 444/872 cut-off events. [2024-06-28 03:12:56,275 INFO L125 PetriNetUnfolderBase]: For 91647/91647 co-relation queries the response was YES. [2024-06-28 03:12:56,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5596 conditions, 872 events. 444/872 cut-off events. For 91647/91647 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4506 event pairs, 136 based on Foata normal form. 8/879 useless extension candidates. Maximal degree in co-relation 5502. Up to 711 conditions per place. [2024-06-28 03:12:56,280 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 140 selfloop transitions, 13 changer transitions 11/166 dead transitions. [2024-06-28 03:12:56,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 166 transitions, 1759 flow [2024-06-28 03:12:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:56,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 03:12:56,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-28 03:12:56,281 INFO L175 Difference]: Start difference. First operand has 201 places, 144 transitions, 1181 flow. Second operand 11 states and 113 transitions. [2024-06-28 03:12:56,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 166 transitions, 1759 flow [2024-06-28 03:12:56,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 166 transitions, 1689 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:12:56,437 INFO L231 Difference]: Finished difference. Result has 199 places, 140 transitions, 1124 flow [2024-06-28 03:12:56,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1124, PETRI_PLACES=199, PETRI_TRANSITIONS=140} [2024-06-28 03:12:56,438 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-28 03:12:56,438 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 140 transitions, 1124 flow [2024-06-28 03:12:56,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:56,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:56,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:56,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:12:56,438 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:56,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash 288439007, now seen corresponding path program 13 times [2024-06-28 03:12:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:56,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562554192] [2024-06-28 03:12:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:57,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:57,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562554192] [2024-06-28 03:12:57,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562554192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:57,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:57,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:57,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380090410] [2024-06-28 03:12:57,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:57,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:57,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:57,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:57,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:57,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 140 transitions, 1124 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:57,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:57,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:57,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:57,731 INFO L124 PetriNetUnfolderBase]: 408/800 cut-off events. [2024-06-28 03:12:57,731 INFO L125 PetriNetUnfolderBase]: For 71813/71813 co-relation queries the response was YES. [2024-06-28 03:12:57,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4584 conditions, 800 events. 408/800 cut-off events. For 71813/71813 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4061 event pairs, 125 based on Foata normal form. 10/809 useless extension candidates. Maximal degree in co-relation 4492. Up to 711 conditions per place. [2024-06-28 03:12:57,737 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 127 selfloop transitions, 8 changer transitions 20/157 dead transitions. [2024-06-28 03:12:57,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 157 transitions, 1512 flow [2024-06-28 03:12:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-28 03:12:57,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-28 03:12:57,738 INFO L175 Difference]: Start difference. First operand has 199 places, 140 transitions, 1124 flow. Second operand 11 states and 105 transitions. [2024-06-28 03:12:57,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 157 transitions, 1512 flow [2024-06-28 03:12:57,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 157 transitions, 1480 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:12:57,847 INFO L231 Difference]: Finished difference. Result has 195 places, 132 transitions, 1058 flow [2024-06-28 03:12:57,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1058, PETRI_PLACES=195, PETRI_TRANSITIONS=132} [2024-06-28 03:12:57,847 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-28 03:12:57,847 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 132 transitions, 1058 flow [2024-06-28 03:12:57,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:57,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:57,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:57,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:12:57,848 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:57,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:57,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1744529739, now seen corresponding path program 19 times [2024-06-28 03:12:57,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:57,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302840846] [2024-06-28 03:12:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:57,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:58,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:58,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302840846] [2024-06-28 03:12:58,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302840846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:58,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:58,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:58,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87584678] [2024-06-28 03:12:58,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:58,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:58,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:58,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:58,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:58,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:12:58,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 132 transitions, 1058 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:58,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:58,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:12:58,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:59,092 INFO L124 PetriNetUnfolderBase]: 369/724 cut-off events. [2024-06-28 03:12:59,092 INFO L125 PetriNetUnfolderBase]: For 47281/47281 co-relation queries the response was YES. [2024-06-28 03:12:59,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4081 conditions, 724 events. 369/724 cut-off events. For 47281/47281 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3558 event pairs, 91 based on Foata normal form. 2/725 useless extension candidates. Maximal degree in co-relation 3991. Up to 641 conditions per place. [2024-06-28 03:12:59,097 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 115 selfloop transitions, 29 changer transitions 0/146 dead transitions. [2024-06-28 03:12:59,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 146 transitions, 1409 flow [2024-06-28 03:12:59,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:12:59,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-28 03:12:59,098 INFO L175 Difference]: Start difference. First operand has 195 places, 132 transitions, 1058 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:12:59,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 146 transitions, 1409 flow [2024-06-28 03:12:59,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 146 transitions, 1367 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-28 03:12:59,191 INFO L231 Difference]: Finished difference. Result has 181 places, 133 transitions, 1109 flow [2024-06-28 03:12:59,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1109, PETRI_PLACES=181, PETRI_TRANSITIONS=133} [2024-06-28 03:12:59,192 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2024-06-28 03:12:59,192 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 133 transitions, 1109 flow [2024-06-28 03:12:59,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:59,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:59,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:59,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:12:59,193 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:59,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:59,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1319762453, now seen corresponding path program 14 times [2024-06-28 03:12:59,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:59,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499207160] [2024-06-28 03:12:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:59,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:00,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:00,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499207160] [2024-06-28 03:13:00,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499207160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:00,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:00,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:13:00,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229654684] [2024-06-28 03:13:00,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:00,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:13:00,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:00,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:13:00,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:13:00,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:00,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 133 transitions, 1109 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:00,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:00,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:00,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:00,469 INFO L124 PetriNetUnfolderBase]: 385/760 cut-off events. [2024-06-28 03:13:00,469 INFO L125 PetriNetUnfolderBase]: For 54388/54388 co-relation queries the response was YES. [2024-06-28 03:13:00,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4132 conditions, 760 events. 385/760 cut-off events. For 54388/54388 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3826 event pairs, 95 based on Foata normal form. 10/769 useless extension candidates. Maximal degree in co-relation 4048. Up to 631 conditions per place. [2024-06-28 03:13:00,475 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 109 selfloop transitions, 25 changer transitions 16/152 dead transitions. [2024-06-28 03:13:00,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 152 transitions, 1491 flow [2024-06-28 03:13:00,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:13:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:13:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-28 03:13:00,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3388888888888889 [2024-06-28 03:13:00,476 INFO L175 Difference]: Start difference. First operand has 181 places, 133 transitions, 1109 flow. Second operand 12 states and 122 transitions. [2024-06-28 03:13:00,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 152 transitions, 1491 flow [2024-06-28 03:13:00,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 152 transitions, 1413 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:13:00,628 INFO L231 Difference]: Finished difference. Result has 185 places, 127 transitions, 1046 flow [2024-06-28 03:13:00,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1046, PETRI_PLACES=185, PETRI_TRANSITIONS=127} [2024-06-28 03:13:00,629 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-28 03:13:00,629 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 127 transitions, 1046 flow [2024-06-28 03:13:00,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:00,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:00,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:00,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:13:00,630 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:00,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:00,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1326018563, now seen corresponding path program 15 times [2024-06-28 03:13:00,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:00,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258352193] [2024-06-28 03:13:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:01,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:01,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258352193] [2024-06-28 03:13:01,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258352193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:01,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:01,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:13:01,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057234522] [2024-06-28 03:13:01,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:01,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:13:01,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:01,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:13:01,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:13:01,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:01,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 127 transitions, 1046 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:01,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:01,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:01,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:01,988 INFO L124 PetriNetUnfolderBase]: 336/669 cut-off events. [2024-06-28 03:13:01,988 INFO L125 PetriNetUnfolderBase]: For 37806/37806 co-relation queries the response was YES. [2024-06-28 03:13:01,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3147 conditions, 669 events. 336/669 cut-off events. For 37806/37806 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3286 event pairs, 78 based on Foata normal form. 10/678 useless extension candidates. Maximal degree in co-relation 3062. Up to 556 conditions per place. [2024-06-28 03:13:01,992 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 106 selfloop transitions, 19 changer transitions 18/145 dead transitions. [2024-06-28 03:13:01,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 145 transitions, 1410 flow [2024-06-28 03:13:01,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:13:01,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:13:01,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 03:13:01,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3277777777777778 [2024-06-28 03:13:01,993 INFO L175 Difference]: Start difference. First operand has 185 places, 127 transitions, 1046 flow. Second operand 12 states and 118 transitions. [2024-06-28 03:13:01,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 145 transitions, 1410 flow [2024-06-28 03:13:02,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 145 transitions, 1350 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:13:02,051 INFO L231 Difference]: Finished difference. Result has 179 places, 120 transitions, 984 flow [2024-06-28 03:13:02,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=984, PETRI_PLACES=179, PETRI_TRANSITIONS=120} [2024-06-28 03:13:02,052 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-06-28 03:13:02,052 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 120 transitions, 984 flow [2024-06-28 03:13:02,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:02,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:02,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:02,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:13:02,052 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:02,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:02,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1319577879, now seen corresponding path program 20 times [2024-06-28 03:13:02,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:02,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848579056] [2024-06-28 03:13:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:02,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:03,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:03,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848579056] [2024-06-28 03:13:03,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848579056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:03,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:03,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:13:03,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110606165] [2024-06-28 03:13:03,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:03,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:13:03,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:03,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:13:03,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:13:03,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:03,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 120 transitions, 984 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:03,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:03,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:03,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:03,392 INFO L124 PetriNetUnfolderBase]: 298/595 cut-off events. [2024-06-28 03:13:03,392 INFO L125 PetriNetUnfolderBase]: For 17990/17990 co-relation queries the response was YES. [2024-06-28 03:13:03,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 595 events. 298/595 cut-off events. For 17990/17990 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2848 event pairs, 71 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 2604. Up to 537 conditions per place. [2024-06-28 03:13:03,396 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 110 selfloop transitions, 20 changer transitions 0/132 dead transitions. [2024-06-28 03:13:03,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 132 transitions, 1272 flow [2024-06-28 03:13:03,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:13:03,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:13:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-28 03:13:03,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-28 03:13:03,401 INFO L175 Difference]: Start difference. First operand has 179 places, 120 transitions, 984 flow. Second operand 10 states and 95 transitions. [2024-06-28 03:13:03,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 132 transitions, 1272 flow [2024-06-28 03:13:03,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 132 transitions, 1202 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-06-28 03:13:03,456 INFO L231 Difference]: Finished difference. Result has 168 places, 120 transitions, 958 flow [2024-06-28 03:13:03,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=958, PETRI_PLACES=168, PETRI_TRANSITIONS=120} [2024-06-28 03:13:03,456 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2024-06-28 03:13:03,456 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 120 transitions, 958 flow [2024-06-28 03:13:03,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:03,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:03,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:03,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:13:03,457 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:03,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:03,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1806229971, now seen corresponding path program 1 times [2024-06-28 03:13:03,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:03,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327792271] [2024-06-28 03:13:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:03,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:04,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:04,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327792271] [2024-06-28 03:13:04,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327792271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:04,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:04,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:04,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404359702] [2024-06-28 03:13:04,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:04,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:04,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:04,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:04,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:04,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:04,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 120 transitions, 958 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:04,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:04,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:04,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:05,330 INFO L124 PetriNetUnfolderBase]: 306/614 cut-off events. [2024-06-28 03:13:05,330 INFO L125 PetriNetUnfolderBase]: For 21252/21252 co-relation queries the response was YES. [2024-06-28 03:13:05,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2663 conditions, 614 events. 306/614 cut-off events. For 21252/21252 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2967 event pairs, 67 based on Foata normal form. 6/619 useless extension candidates. Maximal degree in co-relation 2585. Up to 485 conditions per place. [2024-06-28 03:13:05,334 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 100 selfloop transitions, 16 changer transitions 23/141 dead transitions. [2024-06-28 03:13:05,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 141 transitions, 1288 flow [2024-06-28 03:13:05,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:05,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:13:05,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-28 03:13:05,335 INFO L175 Difference]: Start difference. First operand has 168 places, 120 transitions, 958 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:13:05,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 141 transitions, 1288 flow [2024-06-28 03:13:05,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 141 transitions, 1215 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:13:05,380 INFO L231 Difference]: Finished difference. Result has 169 places, 111 transitions, 857 flow [2024-06-28 03:13:05,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=857, PETRI_PLACES=169, PETRI_TRANSITIONS=111} [2024-06-28 03:13:05,380 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-28 03:13:05,381 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 111 transitions, 857 flow [2024-06-28 03:13:05,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:05,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:05,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:05,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:13:05,381 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:05,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash -143548681, now seen corresponding path program 2 times [2024-06-28 03:13:05,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:05,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018072916] [2024-06-28 03:13:05,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:06,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018072916] [2024-06-28 03:13:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018072916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:06,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:06,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:06,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098501083] [2024-06-28 03:13:06,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:06,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:06,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:06,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:06,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:06,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:06,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 111 transitions, 857 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:06,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:06,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:06,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:07,110 INFO L124 PetriNetUnfolderBase]: 276/562 cut-off events. [2024-06-28 03:13:07,110 INFO L125 PetriNetUnfolderBase]: For 21968/21968 co-relation queries the response was YES. [2024-06-28 03:13:07,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 562 events. 276/562 cut-off events. For 21968/21968 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2674 event pairs, 47 based on Foata normal form. 6/567 useless extension candidates. Maximal degree in co-relation 2348. Up to 390 conditions per place. [2024-06-28 03:13:07,114 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 83 selfloop transitions, 22 changer transitions 23/130 dead transitions. [2024-06-28 03:13:07,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 130 transitions, 1161 flow [2024-06-28 03:13:07,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 03:13:07,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-28 03:13:07,115 INFO L175 Difference]: Start difference. First operand has 169 places, 111 transitions, 857 flow. Second operand 11 states and 106 transitions. [2024-06-28 03:13:07,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 130 transitions, 1161 flow [2024-06-28 03:13:07,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 130 transitions, 1111 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:13:07,152 INFO L231 Difference]: Finished difference. Result has 159 places, 98 transitions, 760 flow [2024-06-28 03:13:07,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=760, PETRI_PLACES=159, PETRI_TRANSITIONS=98} [2024-06-28 03:13:07,152 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-28 03:13:07,153 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 98 transitions, 760 flow [2024-06-28 03:13:07,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:07,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:07,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:07,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:13:07,153 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:07,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:07,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2132012019, now seen corresponding path program 3 times [2024-06-28 03:13:07,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:07,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553409319] [2024-06-28 03:13:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:07,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:08,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:08,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553409319] [2024-06-28 03:13:08,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553409319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:08,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:08,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:08,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455484163] [2024-06-28 03:13:08,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:08,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:08,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:08,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:08,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:08,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:08,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 98 transitions, 760 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:08,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:08,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:08,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:08,917 INFO L124 PetriNetUnfolderBase]: 236/494 cut-off events. [2024-06-28 03:13:08,917 INFO L125 PetriNetUnfolderBase]: For 19016/19016 co-relation queries the response was YES. [2024-06-28 03:13:08,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 494 events. 236/494 cut-off events. For 19016/19016 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2285 event pairs, 41 based on Foata normal form. 6/499 useless extension candidates. Maximal degree in co-relation 2102. Up to 324 conditions per place. [2024-06-28 03:13:08,919 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 75 selfloop transitions, 20 changer transitions 20/117 dead transitions. [2024-06-28 03:13:08,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 117 transitions, 1040 flow [2024-06-28 03:13:08,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-28 03:13:08,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-28 03:13:08,920 INFO L175 Difference]: Start difference. First operand has 159 places, 98 transitions, 760 flow. Second operand 11 states and 108 transitions. [2024-06-28 03:13:08,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 117 transitions, 1040 flow [2024-06-28 03:13:08,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 117 transitions, 980 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-28 03:13:08,947 INFO L231 Difference]: Finished difference. Result has 145 places, 86 transitions, 631 flow [2024-06-28 03:13:08,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=631, PETRI_PLACES=145, PETRI_TRANSITIONS=86} [2024-06-28 03:13:08,947 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2024-06-28 03:13:08,947 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 86 transitions, 631 flow [2024-06-28 03:13:08,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:08,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:08,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:08,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:13:08,948 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:08,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:08,948 INFO L85 PathProgramCache]: Analyzing trace with hash -139829611, now seen corresponding path program 4 times [2024-06-28 03:13:08,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:08,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826279146] [2024-06-28 03:13:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:08,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:10,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:10,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826279146] [2024-06-28 03:13:10,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826279146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:10,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:10,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:10,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953085712] [2024-06-28 03:13:10,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:10,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:10,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:10,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:10,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:10,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:10,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 86 transitions, 631 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:10,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:10,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:10,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:10,968 INFO L124 PetriNetUnfolderBase]: 202/432 cut-off events. [2024-06-28 03:13:10,968 INFO L125 PetriNetUnfolderBase]: For 14212/14212 co-relation queries the response was YES. [2024-06-28 03:13:10,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 432 events. 202/432 cut-off events. For 14212/14212 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1924 event pairs, 41 based on Foata normal form. 6/437 useless extension candidates. Maximal degree in co-relation 1790. Up to 320 conditions per place. [2024-06-28 03:13:10,971 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 73 selfloop transitions, 18 changer transitions 9/102 dead transitions. [2024-06-28 03:13:10,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 102 transitions, 871 flow [2024-06-28 03:13:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:10,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-28 03:13:10,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31212121212121213 [2024-06-28 03:13:10,972 INFO L175 Difference]: Start difference. First operand has 145 places, 86 transitions, 631 flow. Second operand 11 states and 103 transitions. [2024-06-28 03:13:10,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 102 transitions, 871 flow [2024-06-28 03:13:10,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 102 transitions, 813 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-28 03:13:10,990 INFO L231 Difference]: Finished difference. Result has 137 places, 83 transitions, 591 flow [2024-06-28 03:13:10,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=591, PETRI_PLACES=137, PETRI_TRANSITIONS=83} [2024-06-28 03:13:10,991 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 108 predicate places. [2024-06-28 03:13:10,991 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 83 transitions, 591 flow [2024-06-28 03:13:10,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:10,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:10,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:10,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:13:10,991 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:10,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:10,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2131862289, now seen corresponding path program 5 times [2024-06-28 03:13:10,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:10,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323056202] [2024-06-28 03:13:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:10,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:12,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:12,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323056202] [2024-06-28 03:13:12,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323056202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:12,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:12,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:12,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970038866] [2024-06-28 03:13:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:12,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:12,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:12,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:12,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:12,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:12,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 83 transitions, 591 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:12,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:12,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:12,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:12,716 INFO L124 PetriNetUnfolderBase]: 191/415 cut-off events. [2024-06-28 03:13:12,716 INFO L125 PetriNetUnfolderBase]: For 12323/12323 co-relation queries the response was YES. [2024-06-28 03:13:12,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 415 events. 191/415 cut-off events. For 12323/12323 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1844 event pairs, 46 based on Foata normal form. 8/422 useless extension candidates. Maximal degree in co-relation 1588. Up to 293 conditions per place. [2024-06-28 03:13:12,718 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 60 selfloop transitions, 7 changer transitions 29/98 dead transitions. [2024-06-28 03:13:12,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 98 transitions, 821 flow [2024-06-28 03:13:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-28 03:13:12,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31212121212121213 [2024-06-28 03:13:12,719 INFO L175 Difference]: Start difference. First operand has 137 places, 83 transitions, 591 flow. Second operand 11 states and 103 transitions. [2024-06-28 03:13:12,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 98 transitions, 821 flow [2024-06-28 03:13:12,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 98 transitions, 781 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:13:12,733 INFO L231 Difference]: Finished difference. Result has 135 places, 65 transitions, 424 flow [2024-06-28 03:13:12,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=424, PETRI_PLACES=135, PETRI_TRANSITIONS=65} [2024-06-28 03:13:12,734 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2024-06-28 03:13:12,734 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 65 transitions, 424 flow [2024-06-28 03:13:12,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:12,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:12,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:12,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:13:12,734 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:12,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:12,734 INFO L85 PathProgramCache]: Analyzing trace with hash 965702805, now seen corresponding path program 6 times [2024-06-28 03:13:12,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:12,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145676179] [2024-06-28 03:13:12,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:12,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:13,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:13,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145676179] [2024-06-28 03:13:13,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145676179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:13,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:13,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:13,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255556890] [2024-06-28 03:13:13,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:13,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:13,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:13,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:13,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:13,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:13,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 65 transitions, 424 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:13,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:13,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:13,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:14,029 INFO L124 PetriNetUnfolderBase]: 155/333 cut-off events. [2024-06-28 03:13:14,030 INFO L125 PetriNetUnfolderBase]: For 9689/9689 co-relation queries the response was YES. [2024-06-28 03:13:14,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 333 events. 155/333 cut-off events. For 9689/9689 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1362 event pairs, 37 based on Foata normal form. 6/338 useless extension candidates. Maximal degree in co-relation 1214. Up to 249 conditions per place. [2024-06-28 03:13:14,032 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 51 selfloop transitions, 9 changer transitions 19/81 dead transitions. [2024-06-28 03:13:14,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 81 transitions, 622 flow [2024-06-28 03:13:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:14,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 03:13:14,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-28 03:13:14,033 INFO L175 Difference]: Start difference. First operand has 135 places, 65 transitions, 424 flow. Second operand 11 states and 100 transitions. [2024-06-28 03:13:14,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 81 transitions, 622 flow [2024-06-28 03:13:14,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 81 transitions, 551 flow, removed 9 selfloop flow, removed 18 redundant places. [2024-06-28 03:13:14,047 INFO L231 Difference]: Finished difference. Result has 111 places, 57 transitions, 334 flow [2024-06-28 03:13:14,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=334, PETRI_PLACES=111, PETRI_TRANSITIONS=57} [2024-06-28 03:13:14,047 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-28 03:13:14,047 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 57 transitions, 334 flow [2024-06-28 03:13:14,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:14,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:14,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:14,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:13:14,048 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:14,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:14,048 INFO L85 PathProgramCache]: Analyzing trace with hash 370413845, now seen corresponding path program 7 times [2024-06-28 03:13:14,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:14,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42434147] [2024-06-28 03:13:14,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:14,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:15,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:15,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42434147] [2024-06-28 03:13:15,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42434147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:15,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:15,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:15,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505803446] [2024-06-28 03:13:15,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:15,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:15,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:15,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:15,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:15,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:15,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 57 transitions, 334 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:15,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:15,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:15,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:15,715 INFO L124 PetriNetUnfolderBase]: 137/295 cut-off events. [2024-06-28 03:13:15,716 INFO L125 PetriNetUnfolderBase]: For 7815/7815 co-relation queries the response was YES. [2024-06-28 03:13:15,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 295 events. 137/295 cut-off events. For 7815/7815 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1139 event pairs, 31 based on Foata normal form. 6/300 useless extension candidates. Maximal degree in co-relation 994. Up to 201 conditions per place. [2024-06-28 03:13:15,717 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 45 selfloop transitions, 11 changer transitions 16/74 dead transitions. [2024-06-28 03:13:15,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 74 transitions, 516 flow [2024-06-28 03:13:15,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:15,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:15,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-28 03:13:15,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30606060606060603 [2024-06-28 03:13:15,718 INFO L175 Difference]: Start difference. First operand has 111 places, 57 transitions, 334 flow. Second operand 11 states and 101 transitions. [2024-06-28 03:13:15,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 74 transitions, 516 flow [2024-06-28 03:13:15,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 74 transitions, 479 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:13:15,725 INFO L231 Difference]: Finished difference. Result has 100 places, 51 transitions, 294 flow [2024-06-28 03:13:15,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=294, PETRI_PLACES=100, PETRI_TRANSITIONS=51} [2024-06-28 03:13:15,726 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2024-06-28 03:13:15,726 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 51 transitions, 294 flow [2024-06-28 03:13:15,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:15,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:15,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:15,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:13:15,726 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:15,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:15,726 INFO L85 PathProgramCache]: Analyzing trace with hash -34680149, now seen corresponding path program 8 times [2024-06-28 03:13:15,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:15,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818146126] [2024-06-28 03:13:15,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:15,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:16,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818146126] [2024-06-28 03:13:16,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818146126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:16,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:16,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:16,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016447312] [2024-06-28 03:13:16,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:16,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:16,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:16,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:16,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:16,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:16,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 51 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:16,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:16,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:16,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:17,110 INFO L124 PetriNetUnfolderBase]: 117/259 cut-off events. [2024-06-28 03:13:17,110 INFO L125 PetriNetUnfolderBase]: For 6171/6171 co-relation queries the response was YES. [2024-06-28 03:13:17,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 259 events. 117/259 cut-off events. For 6171/6171 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 944 event pairs, 27 based on Foata normal form. 6/264 useless extension candidates. Maximal degree in co-relation 868. Up to 173 conditions per place. [2024-06-28 03:13:17,120 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 35 selfloop transitions, 3 changer transitions 28/68 dead transitions. [2024-06-28 03:13:17,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 68 transitions, 464 flow [2024-06-28 03:13:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 03:13:17,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-28 03:13:17,121 INFO L175 Difference]: Start difference. First operand has 100 places, 51 transitions, 294 flow. Second operand 11 states and 100 transitions. [2024-06-28 03:13:17,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 68 transitions, 464 flow [2024-06-28 03:13:17,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 68 transitions, 434 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:13:17,127 INFO L231 Difference]: Finished difference. Result has 93 places, 39 transitions, 213 flow [2024-06-28 03:13:17,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=213, PETRI_PLACES=93, PETRI_TRANSITIONS=39} [2024-06-28 03:13:17,127 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-28 03:13:17,127 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 39 transitions, 213 flow [2024-06-28 03:13:17,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:17,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:17,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:17,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:13:17,128 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:17,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash -392943189, now seen corresponding path program 9 times [2024-06-28 03:13:17,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:17,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771647821] [2024-06-28 03:13:17,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:17,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:18,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:18,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771647821] [2024-06-28 03:13:18,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771647821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:18,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:18,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:18,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277434741] [2024-06-28 03:13:18,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:18,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:18,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:18,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:18,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:18,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:18,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 39 transitions, 213 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:18,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:18,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:18,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:18,940 INFO L124 PetriNetUnfolderBase]: 92/201 cut-off events. [2024-06-28 03:13:18,940 INFO L125 PetriNetUnfolderBase]: For 5024/5024 co-relation queries the response was YES. [2024-06-28 03:13:18,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 201 events. 92/201 cut-off events. For 5024/5024 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 661 event pairs, 23 based on Foata normal form. 6/207 useless extension candidates. Maximal degree in co-relation 673. Up to 135 conditions per place. [2024-06-28 03:13:18,941 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 31 selfloop transitions, 10 changer transitions 11/54 dead transitions. [2024-06-28 03:13:18,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 54 transitions, 349 flow [2024-06-28 03:13:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 03:13:18,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-28 03:13:18,942 INFO L175 Difference]: Start difference. First operand has 93 places, 39 transitions, 213 flow. Second operand 11 states and 100 transitions. [2024-06-28 03:13:18,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 54 transitions, 349 flow [2024-06-28 03:13:18,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 54 transitions, 325 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 03:13:18,946 INFO L231 Difference]: Finished difference. Result has 75 places, 36 transitions, 198 flow [2024-06-28 03:13:18,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=198, PETRI_PLACES=75, PETRI_TRANSITIONS=36} [2024-06-28 03:13:18,946 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-28 03:13:18,946 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 36 transitions, 198 flow [2024-06-28 03:13:18,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:18,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:18,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:18,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:13:18,946 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:18,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:18,947 INFO L85 PathProgramCache]: Analyzing trace with hash -818034549, now seen corresponding path program 10 times [2024-06-28 03:13:18,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:18,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049636071] [2024-06-28 03:13:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:20,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:20,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049636071] [2024-06-28 03:13:20,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049636071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:20,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:20,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:20,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079310538] [2024-06-28 03:13:20,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:20,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:20,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:20,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:20,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:20,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:20,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 36 transitions, 198 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:20,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:20,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:20,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:20,528 INFO L124 PetriNetUnfolderBase]: 82/183 cut-off events. [2024-06-28 03:13:20,528 INFO L125 PetriNetUnfolderBase]: For 3164/3164 co-relation queries the response was YES. [2024-06-28 03:13:20,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 183 events. 82/183 cut-off events. For 3164/3164 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 570 event pairs, 21 based on Foata normal form. 6/189 useless extension candidates. Maximal degree in co-relation 604. Up to 117 conditions per place. [2024-06-28 03:13:20,529 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 27 selfloop transitions, 8 changer transitions 14/51 dead transitions. [2024-06-28 03:13:20,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 51 transitions, 328 flow [2024-06-28 03:13:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-28 03:13:20,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-28 03:13:20,531 INFO L175 Difference]: Start difference. First operand has 75 places, 36 transitions, 198 flow. Second operand 11 states and 99 transitions. [2024-06-28 03:13:20,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 51 transitions, 328 flow [2024-06-28 03:13:20,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 51 transitions, 302 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:13:20,534 INFO L231 Difference]: Finished difference. Result has 71 places, 32 transitions, 173 flow [2024-06-28 03:13:20,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=173, PETRI_PLACES=71, PETRI_TRANSITIONS=32} [2024-06-28 03:13:20,535 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-28 03:13:20,535 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 32 transitions, 173 flow [2024-06-28 03:13:20,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:20,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:20,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:20,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:13:20,535 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:20,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:20,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1251826625, now seen corresponding path program 11 times [2024-06-28 03:13:20,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:20,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680598251] [2024-06-28 03:13:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:20,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:21,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:21,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680598251] [2024-06-28 03:13:21,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680598251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:21,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:21,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:21,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971795293] [2024-06-28 03:13:21,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:21,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:21,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:21,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:21,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:21,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:21,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 32 transitions, 173 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:21,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:21,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:21,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:22,133 INFO L124 PetriNetUnfolderBase]: 68/157 cut-off events. [2024-06-28 03:13:22,133 INFO L125 PetriNetUnfolderBase]: For 2630/2630 co-relation queries the response was YES. [2024-06-28 03:13:22,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 157 events. 68/157 cut-off events. For 2630/2630 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 460 event pairs, 17 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 518. Up to 91 conditions per place. [2024-06-28 03:13:22,134 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 22 selfloop transitions, 6 changer transitions 17/47 dead transitions. [2024-06-28 03:13:22,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 47 transitions, 295 flow [2024-06-28 03:13:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-28 03:13:22,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29393939393939394 [2024-06-28 03:13:22,135 INFO L175 Difference]: Start difference. First operand has 71 places, 32 transitions, 173 flow. Second operand 11 states and 97 transitions. [2024-06-28 03:13:22,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 47 transitions, 295 flow [2024-06-28 03:13:22,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 47 transitions, 271 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:13:22,136 INFO L231 Difference]: Finished difference. Result has 65 places, 27 transitions, 141 flow [2024-06-28 03:13:22,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=141, PETRI_PLACES=65, PETRI_TRANSITIONS=27} [2024-06-28 03:13:22,137 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-28 03:13:22,137 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 27 transitions, 141 flow [2024-06-28 03:13:22,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:22,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:22,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:22,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:13:22,137 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:22,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:22,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2042757717, now seen corresponding path program 12 times [2024-06-28 03:13:22,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:22,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917271679] [2024-06-28 03:13:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:22,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:23,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:23,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917271679] [2024-06-28 03:13:23,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917271679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:23,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:23,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:23,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378446469] [2024-06-28 03:13:23,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:23,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:23,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:23,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:23,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:23,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:23,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 27 transitions, 141 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:23,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:23,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:23,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:23,881 INFO L124 PetriNetUnfolderBase]: 52/125 cut-off events. [2024-06-28 03:13:23,881 INFO L125 PetriNetUnfolderBase]: For 1926/1926 co-relation queries the response was YES. [2024-06-28 03:13:23,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 125 events. 52/125 cut-off events. For 1926/1926 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 322 event pairs, 15 based on Foata normal form. 6/131 useless extension candidates. Maximal degree in co-relation 412. Up to 64 conditions per place. [2024-06-28 03:13:23,882 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 17 selfloop transitions, 4 changer transitions 18/41 dead transitions. [2024-06-28 03:13:23,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 41 transitions, 249 flow [2024-06-28 03:13:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-28 03:13:23,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2024-06-28 03:13:23,883 INFO L175 Difference]: Start difference. First operand has 65 places, 27 transitions, 141 flow. Second operand 11 states and 95 transitions. [2024-06-28 03:13:23,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 41 transitions, 249 flow [2024-06-28 03:13:23,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 227 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:13:23,884 INFO L231 Difference]: Finished difference. Result has 57 places, 21 transitions, 102 flow [2024-06-28 03:13:23,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=21} [2024-06-28 03:13:23,884 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-28 03:13:23,884 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 21 transitions, 102 flow [2024-06-28 03:13:23,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:23,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:23,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:23,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:13:23,885 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:13:23,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1312074253, now seen corresponding path program 13 times [2024-06-28 03:13:23,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:23,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178594479] [2024-06-28 03:13:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:24,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:24,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178594479] [2024-06-28 03:13:24,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178594479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:24,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:24,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:13:24,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277668420] [2024-06-28 03:13:24,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:24,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:13:24,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:24,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:13:24,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:13:25,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:13:25,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 21 transitions, 102 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:25,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:25,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:13:25,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:25,146 INFO L124 PetriNetUnfolderBase]: 23/62 cut-off events. [2024-06-28 03:13:25,146 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2024-06-28 03:13:25,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 62 events. 23/62 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 6/68 useless extension candidates. Maximal degree in co-relation 158. Up to 24 conditions per place. [2024-06-28 03:13:25,146 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-28 03:13:25,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 29 transitions, 144 flow [2024-06-28 03:13:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 83 transitions. [2024-06-28 03:13:25,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2515151515151515 [2024-06-28 03:13:25,147 INFO L175 Difference]: Start difference. First operand has 57 places, 21 transitions, 102 flow. Second operand 11 states and 83 transitions. [2024-06-28 03:13:25,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 29 transitions, 144 flow [2024-06-28 03:13:25,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 29 transitions, 118 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-28 03:13:25,148 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2024-06-28 03:13:25,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2024-06-28 03:13:25,148 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-06-28 03:13:25,148 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2024-06-28 03:13:25,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:25,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:13:25,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:13:25,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:13:25,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:13:25,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:13:25,153 INFO L445 BasicCegarLoop]: Path program histogram: [20, 15, 13, 12, 11, 10, 6, 6, 6, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:25,156 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:13:25,156 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:13:25,160 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:13:25,160 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:13:25,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:13:25 BasicIcfg [2024-06-28 03:13:25,161 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:13:25,162 INFO L158 Benchmark]: Toolchain (without parser) took 165296.21ms. Allocated memory was 192.9MB in the beginning and 750.8MB in the end (delta: 557.8MB). Free memory was 132.9MB in the beginning and 380.0MB in the end (delta: -247.1MB). Peak memory consumption was 313.2MB. Max. memory is 16.1GB. [2024-06-28 03:13:25,162 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 130.0MB. Free memory was 104.5MB in the beginning and 104.4MB in the end (delta: 92.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:13:25,162 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:13:25,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 707.61ms. Allocated memory is still 192.9MB. Free memory was 132.9MB in the beginning and 98.2MB in the end (delta: 34.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-28 03:13:25,163 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.44ms. Allocated memory is still 192.9MB. Free memory was 98.2MB in the beginning and 160.6MB in the end (delta: -62.4MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2024-06-28 03:13:25,163 INFO L158 Benchmark]: Boogie Preprocessor took 62.61ms. Allocated memory is still 192.9MB. Free memory was 160.6MB in the beginning and 156.6MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:13:25,163 INFO L158 Benchmark]: RCFGBuilder took 723.42ms. Allocated memory is still 192.9MB. Free memory was 156.6MB in the beginning and 97.8MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-28 03:13:25,163 INFO L158 Benchmark]: TraceAbstraction took 163706.03ms. Allocated memory was 192.9MB in the beginning and 750.8MB in the end (delta: 557.8MB). Free memory was 97.7MB in the beginning and 380.0MB in the end (delta: -282.3MB). Peak memory consumption was 276.6MB. Max. memory is 16.1GB. [2024-06-28 03:13:25,164 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.20ms. Allocated memory is still 130.0MB. Free memory was 104.5MB in the beginning and 104.4MB in the end (delta: 92.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 707.61ms. Allocated memory is still 192.9MB. Free memory was 132.9MB in the beginning and 98.2MB in the end (delta: 34.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.44ms. Allocated memory is still 192.9MB. Free memory was 98.2MB in the beginning and 160.6MB in the end (delta: -62.4MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.61ms. Allocated memory is still 192.9MB. Free memory was 160.6MB in the beginning and 156.6MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 723.42ms. Allocated memory is still 192.9MB. Free memory was 156.6MB in the beginning and 97.8MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 163706.03ms. Allocated memory was 192.9MB in the beginning and 750.8MB in the end (delta: 557.8MB). Free memory was 97.7MB in the beginning and 380.0MB in the end (delta: -282.3MB). Peak memory consumption was 276.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 48 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 163.6s, OverallIterations: 125, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 54.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6330 SdHoareTripleChecker+Valid, 26.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5297 mSDsluCounter, 4174 SdHoareTripleChecker+Invalid, 22.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3537 mSDsCounter, 1422 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41576 IncrementalHoareTripleChecker+Invalid, 42998 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1422 mSolverCounterUnsat, 637 mSDtfsCounter, 41576 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1303 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2554 ImplicationChecksByTransitivity, 36.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1959occurred in iteration=71, InterpolantAutomatonStates: 1160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 107.3s InterpolantComputationTime, 1944 NumberOfCodeBlocks, 1944 NumberOfCodeBlocksAsserted, 125 NumberOfCheckSat, 1819 ConstructedInterpolants, 0 QuantifiedInterpolants, 79592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 125 InterpolantComputations, 125 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 03:13:25,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE