./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-barrier.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/weaver/parallel-barrier.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-barrier.wvr.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 --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:59:26,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:59:26,820 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:59:26,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:59:26,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:59:26,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:59:26,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:59:26,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:59:26,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:59:26,851 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:59:26,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:59:26,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:59:26,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:59:26,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:59:26,853 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:59:26,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:59:26,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:59:26,854 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:59:26,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:59:26,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:59:26,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:59:26,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:59:26,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:59:26,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:59:26,855 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:59:26,856 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:59:26,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:59:26,856 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:59:26,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:59:26,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:59:26,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:59:26,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:59:26,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:59:26,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:59:26,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:59:26,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:59:26,859 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:59:26,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:59:26,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:59:26,859 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:59:26,859 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:59:26,860 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:59:26,860 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:59:26,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:59:27,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:59:27,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:59:27,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:59:27,076 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:59:27,077 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:59:27,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-barrier.wvr.yml/witness.yml [2024-01-31 16:59:27,300 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:59:27,300 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:59:27,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2024-01-31 16:59:28,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:59:28,437 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:59:28,437 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2024-01-31 16:59:28,443 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2313e085/a33becc23e0148379b2b68039dbe5c8e/FLAG33f4ed9a4 [2024-01-31 16:59:28,454 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2313e085/a33becc23e0148379b2b68039dbe5c8e [2024-01-31 16:59:28,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:59:28,455 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:59:28,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:59:28,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:59:28,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:59:28,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:59:27" (1/2) ... [2024-01-31 16:59:28,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203b1673 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:28, skipping insertion in model container [2024-01-31 16:59:28,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:59:27" (1/2) ... [2024-01-31 16:59:28,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@855deb4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:28, skipping insertion in model container [2024-01-31 16:59:28,462 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:59:28" (2/2) ... [2024-01-31 16:59:28,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203b1673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28, skipping insertion in model container [2024-01-31 16:59:28,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:59:28" (2/2) ... [2024-01-31 16:59:28,463 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:59:28,578 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:59:28,593 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:59:28,742 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c[4800,4813] [2024-01-31 16:59:28,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:59:28,763 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:59:28,793 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c[4800,4813] [2024-01-31 16:59:28,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:59:28,813 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:59:28,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28 WrapperNode [2024-01-31 16:59:28,813 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:59:28,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:59:28,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:59:28,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:59:28,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (1/1) ... [2024-01-31 16:59:28,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (1/1) ... [2024-01-31 16:59:28,854 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 270 [2024-01-31 16:59:28,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:59:28,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:59:28,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:59:28,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:59:28,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (1/1) ... [2024-01-31 16:59:28,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (1/1) ... [2024-01-31 16:59:28,865 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (1/1) ... [2024-01-31 16:59:28,876 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2024-01-31 16:59:28,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (1/1) ... [2024-01-31 16:59:28,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (1/1) ... [2024-01-31 16:59:28,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (1/1) ... [2024-01-31 16:59:28,882 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (1/1) ... [2024-01-31 16:59:28,884 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (1/1) ... [2024-01-31 16:59:28,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (1/1) ... [2024-01-31 16:59:28,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:59:28,887 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:59:28,887 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:59:28,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:59:28,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (1/1) ... [2024-01-31 16:59:28,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:59:28,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:59:28,916 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) [2024-01-31 16:59:28,931 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 [2024-01-31 16:59:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:59:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:59:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:59:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:59:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:59:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:59:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:59:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:59:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-31 16:59:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:59:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:59:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:59:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:59:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:59:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 16:59:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-31 16:59:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:59:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:59:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:59:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:59:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:59:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:59:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 16:59:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 16:59:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:59:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:59:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:59:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:59:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:59:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:59:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-31 16:59:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-01-31 16:59:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-01-31 16:59:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-01-31 16:59:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-01-31 16:59:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:59:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:59:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:59:28,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:59:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:59:28,953 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:59:29,053 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:59:29,054 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:59:29,355 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:59:29,355 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:59:29,541 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:59:29,541 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:59:29,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:59:29 BoogieIcfgContainer [2024-01-31 16:59:29,542 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:59:29,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:59:29,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:59:29,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:59:29,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:59:27" (1/4) ... [2024-01-31 16:59:29,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe7704c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:59:29, skipping insertion in model container [2024-01-31 16:59:29,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:59:28" (2/4) ... [2024-01-31 16:59:29,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe7704c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:59:29, skipping insertion in model container [2024-01-31 16:59:29,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:28" (3/4) ... [2024-01-31 16:59:29,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe7704c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:59:29, skipping insertion in model container [2024-01-31 16:59:29,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:59:29" (4/4) ... [2024-01-31 16:59:29,549 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2024-01-31 16:59:29,560 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:59:29,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:59:29,561 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:59:29,634 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-01-31 16:59:29,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 79 transitions, 224 flow [2024-01-31 16:59:29,714 INFO L124 PetriNetUnfolderBase]: 4/65 cut-off events. [2024-01-31 16:59:29,715 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:59:29,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 65 events. 4/65 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2024-01-31 16:59:29,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 79 transitions, 224 flow [2024-01-31 16:59:29,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 64 transitions, 176 flow [2024-01-31 16:59:29,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:59:29,733 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;@30b97f55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:59:29,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-01-31 16:59:29,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:59:29,760 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2024-01-31 16:59:29,760 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:59:29,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:59:29,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:59:29,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-31 16:59:29,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:59:29,766 INFO L85 PathProgramCache]: Analyzing trace with hash 240787083, now seen corresponding path program 1 times [2024-01-31 16:59:29,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:59:29,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102384526] [2024-01-31 16:59:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:59:29,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:59:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:59:30,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:59:30,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:59:30,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102384526] [2024-01-31 16:59:30,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102384526] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:59:30,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:59:30,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:59:30,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830462500] [2024-01-31 16:59:30,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:59:30,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:59:30,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:59:30,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:59:30,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:59:30,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-01-31 16:59:30,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 64 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:30,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:59:30,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-01-31 16:59:30,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:59:31,553 INFO L124 PetriNetUnfolderBase]: 8227/12717 cut-off events. [2024-01-31 16:59:31,553 INFO L125 PetriNetUnfolderBase]: For 1709/1709 co-relation queries the response was YES. [2024-01-31 16:59:31,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26300 conditions, 12717 events. 8227/12717 cut-off events. For 1709/1709 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 88392 event pairs, 5835 based on Foata normal form. 70/11383 useless extension candidates. Maximal degree in co-relation 25768. Up to 9819 conditions per place. [2024-01-31 16:59:31,626 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 59 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-01-31 16:59:31,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 364 flow [2024-01-31 16:59:31,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:59:31,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:59:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-01-31 16:59:31,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104417670682731 [2024-01-31 16:59:31,637 INFO L175 Difference]: Start difference. First operand has 79 places, 64 transitions, 176 flow. Second operand 3 states and 152 transitions. [2024-01-31 16:59:31,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 364 flow [2024-01-31 16:59:31,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 85 transitions, 316 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-31 16:59:31,680 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 152 flow [2024-01-31 16:59:31,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-01-31 16:59:31,684 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -9 predicate places. [2024-01-31 16:59:31,684 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 152 flow [2024-01-31 16:59:31,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:31,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:59:31,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:59:31,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:59:31,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-31 16:59:31,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:59:31,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1691575991, now seen corresponding path program 2 times [2024-01-31 16:59:31,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:59:31,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318271468] [2024-01-31 16:59:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:59:31,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:59:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:59:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:59:31,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:59:31,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318271468] [2024-01-31 16:59:31,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318271468] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:59:31,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:59:31,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:59:31,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406882207] [2024-01-31 16:59:31,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:59:31,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:59:31,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:59:31,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:59:31,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:59:31,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-01-31 16:59:31,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:31,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:59:31,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-01-31 16:59:31,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:59:32,583 INFO L124 PetriNetUnfolderBase]: 6859/10669 cut-off events. [2024-01-31 16:59:32,583 INFO L125 PetriNetUnfolderBase]: For 1090/1090 co-relation queries the response was YES. [2024-01-31 16:59:32,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20886 conditions, 10669 events. 6859/10669 cut-off events. For 1090/1090 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 71816 event pairs, 4935 based on Foata normal form. 70/9663 useless extension candidates. Maximal degree in co-relation 5289. Up to 8031 conditions per place. [2024-01-31 16:59:32,628 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 57 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-01-31 16:59:32,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 320 flow [2024-01-31 16:59:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:59:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:59:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-01-31 16:59:32,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024096385542169 [2024-01-31 16:59:32,634 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 152 flow. Second operand 3 states and 150 transitions. [2024-01-31 16:59:32,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 320 flow [2024-01-31 16:59:32,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 83 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:59:32,637 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 156 flow [2024-01-31 16:59:32,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-01-31 16:59:32,638 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -8 predicate places. [2024-01-31 16:59:32,638 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 156 flow [2024-01-31 16:59:32,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:32,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:59:32,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:59:32,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:59:32,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-31 16:59:32,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:59:32,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1698695916, now seen corresponding path program 1 times [2024-01-31 16:59:32,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:59:32,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290668877] [2024-01-31 16:59:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:59:32,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:59:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:59:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:59:32,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:59:32,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290668877] [2024-01-31 16:59:32,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290668877] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:59:32,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:59:32,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:59:32,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628607580] [2024-01-31 16:59:32,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:59:32,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:59:32,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:59:32,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:59:32,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:59:32,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-01-31 16:59:32,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:32,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:59:32,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-01-31 16:59:32,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:59:33,417 INFO L124 PetriNetUnfolderBase]: 6011/9333 cut-off events. [2024-01-31 16:59:33,417 INFO L125 PetriNetUnfolderBase]: For 1414/1414 co-relation queries the response was YES. [2024-01-31 16:59:33,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18719 conditions, 9333 events. 6011/9333 cut-off events. For 1414/1414 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 59312 event pairs, 4291 based on Foata normal form. 62/8573 useless extension candidates. Maximal degree in co-relation 7506. Up to 7059 conditions per place. [2024-01-31 16:59:33,449 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 57 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-01-31 16:59:33,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 83 transitions, 324 flow [2024-01-31 16:59:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:59:33,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:59:33,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-01-31 16:59:33,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024096385542169 [2024-01-31 16:59:33,451 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 156 flow. Second operand 3 states and 150 transitions. [2024-01-31 16:59:33,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 83 transitions, 324 flow [2024-01-31 16:59:33,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:59:33,454 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 160 flow [2024-01-31 16:59:33,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2024-01-31 16:59:33,455 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -7 predicate places. [2024-01-31 16:59:33,455 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 160 flow [2024-01-31 16:59:33,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:33,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:59:33,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:59:33,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:59:33,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-31 16:59:33,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:59:33,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1596957376, now seen corresponding path program 2 times [2024-01-31 16:59:33,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:59:33,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994309348] [2024-01-31 16:59:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:59:33,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:59:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:59:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:59:34,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:59:34,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994309348] [2024-01-31 16:59:34,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994309348] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:59:34,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:59:34,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-01-31 16:59:34,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976803111] [2024-01-31 16:59:34,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:59:34,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-31 16:59:34,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:59:34,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-31 16:59:34,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-01-31 16:59:34,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 83 [2024-01-31 16:59:34,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 160 flow. Second operand has 19 states, 19 states have (on average 17.68421052631579) internal successors, (336), 19 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:34,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:59:34,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 83 [2024-01-31 16:59:34,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:59:41,562 INFO L124 PetriNetUnfolderBase]: 86153/112232 cut-off events. [2024-01-31 16:59:41,562 INFO L125 PetriNetUnfolderBase]: For 11822/11822 co-relation queries the response was YES. [2024-01-31 16:59:41,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235480 conditions, 112232 events. 86153/112232 cut-off events. For 11822/11822 co-relation queries the response was YES. Maximal size of possible extension queue 1675. Compared 605892 event pairs, 24138 based on Foata normal form. 1/108645 useless extension candidates. Maximal degree in co-relation 103935. Up to 82527 conditions per place. [2024-01-31 16:59:42,223 INFO L140 encePairwiseOnDemand]: 63/83 looper letters, 368 selfloop transitions, 91 changer transitions 22/490 dead transitions. [2024-01-31 16:59:42,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 490 transitions, 2113 flow [2024-01-31 16:59:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-01-31 16:59:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-01-31 16:59:42,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 962 transitions. [2024-01-31 16:59:42,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3621987951807229 [2024-01-31 16:59:42,227 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 160 flow. Second operand 32 states and 962 transitions. [2024-01-31 16:59:42,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 490 transitions, 2113 flow [2024-01-31 16:59:42,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 490 transitions, 2099 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:59:42,272 INFO L231 Difference]: Finished difference. Result has 118 places, 155 transitions, 661 flow [2024-01-31 16:59:42,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=661, PETRI_PLACES=118, PETRI_TRANSITIONS=155} [2024-01-31 16:59:42,273 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 39 predicate places. [2024-01-31 16:59:42,273 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 155 transitions, 661 flow [2024-01-31 16:59:42,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.68421052631579) internal successors, (336), 19 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:42,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:59:42,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:59:42,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:59:42,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-31 16:59:42,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:59:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash -601172390, now seen corresponding path program 3 times [2024-01-31 16:59:42,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:59:42,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633708825] [2024-01-31 16:59:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:59:42,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:59:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:59:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:59:42,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:59:42,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633708825] [2024-01-31 16:59:42,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633708825] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:59:42,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:59:42,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-01-31 16:59:42,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863442255] [2024-01-31 16:59:42,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:59:42,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-31 16:59:42,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:59:42,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-31 16:59:42,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2024-01-31 16:59:42,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 83 [2024-01-31 16:59:42,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 155 transitions, 661 flow. Second operand has 19 states, 19 states have (on average 17.68421052631579) internal successors, (336), 19 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:42,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:59:42,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 83 [2024-01-31 16:59:42,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:59:55,401 INFO L124 PetriNetUnfolderBase]: 112617/146915 cut-off events. [2024-01-31 16:59:55,401 INFO L125 PetriNetUnfolderBase]: For 127031/127067 co-relation queries the response was YES. [2024-01-31 16:59:55,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393300 conditions, 146915 events. 112617/146915 cut-off events. For 127031/127067 co-relation queries the response was YES. Maximal size of possible extension queue 2187. Compared 820282 event pairs, 35559 based on Foata normal form. 25/141966 useless extension candidates. Maximal degree in co-relation 378181. Up to 110125 conditions per place. [2024-01-31 16:59:56,325 INFO L140 encePairwiseOnDemand]: 65/83 looper letters, 574 selfloop transitions, 151 changer transitions 38/772 dead transitions. [2024-01-31 16:59:56,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 772 transitions, 4207 flow [2024-01-31 16:59:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-01-31 16:59:56,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-01-31 16:59:56,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1274 transitions. [2024-01-31 16:59:56,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3654618473895582 [2024-01-31 16:59:56,330 INFO L175 Difference]: Start difference. First operand has 118 places, 155 transitions, 661 flow. Second operand 42 states and 1274 transitions. [2024-01-31 16:59:56,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 772 transitions, 4207 flow [2024-01-31 16:59:57,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 772 transitions, 4197 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-31 16:59:57,436 INFO L231 Difference]: Finished difference. Result has 170 places, 305 transitions, 1914 flow [2024-01-31 16:59:57,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1914, PETRI_PLACES=170, PETRI_TRANSITIONS=305} [2024-01-31 16:59:57,439 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 91 predicate places. [2024-01-31 16:59:57,439 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 305 transitions, 1914 flow [2024-01-31 16:59:57,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.68421052631579) internal successors, (336), 19 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:57,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:59:57,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:59:57,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:59:57,440 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-31 16:59:57,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:59:57,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1274472890, now seen corresponding path program 4 times [2024-01-31 16:59:57,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:59:57,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596765813] [2024-01-31 16:59:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:59:57,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:59:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:59:57,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:59:57,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:59:57,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596765813] [2024-01-31 16:59:57,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596765813] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:59:57,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:59:57,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:59:57,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172471062] [2024-01-31 16:59:57,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:59:57,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:59:57,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:59:57,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:59:57,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:59:57,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-01-31 16:59:57,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 305 transitions, 1914 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:57,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:59:57,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-01-31 16:59:57,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:03,082 INFO L124 PetriNetUnfolderBase]: 41989/61447 cut-off events. [2024-01-31 17:00:03,082 INFO L125 PetriNetUnfolderBase]: For 46840/47728 co-relation queries the response was YES. [2024-01-31 17:00:03,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156099 conditions, 61447 events. 41989/61447 cut-off events. For 46840/47728 co-relation queries the response was YES. Maximal size of possible extension queue 1796. Compared 433028 event pairs, 28047 based on Foata normal form. 538/54467 useless extension candidates. Maximal degree in co-relation 156051. Up to 41771 conditions per place. [2024-01-31 17:00:03,941 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 60 selfloop transitions, 3 changer transitions 0/317 dead transitions. [2024-01-31 17:00:03,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 317 transitions, 2050 flow [2024-01-31 17:00:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:00:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:00:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-01-31 17:00:03,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104417670682731 [2024-01-31 17:00:03,942 INFO L175 Difference]: Start difference. First operand has 170 places, 305 transitions, 1914 flow. Second operand 3 states and 152 transitions. [2024-01-31 17:00:03,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 317 transitions, 2050 flow [2024-01-31 17:00:05,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 317 transitions, 1757 flow, removed 137 selfloop flow, removed 2 redundant places. [2024-01-31 17:00:05,543 INFO L231 Difference]: Finished difference. Result has 168 places, 296 transitions, 1584 flow [2024-01-31 17:00:05,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1584, PETRI_PLACES=168, PETRI_TRANSITIONS=296} [2024-01-31 17:00:05,544 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 89 predicate places. [2024-01-31 17:00:05,544 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 296 transitions, 1584 flow [2024-01-31 17:00:05,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:05,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:05,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:05,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:00:05,545 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-31 17:00:05,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:05,546 INFO L85 PathProgramCache]: Analyzing trace with hash 960916950, now seen corresponding path program 5 times [2024-01-31 17:00:05,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:05,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414295868] [2024-01-31 17:00:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:05,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:06,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:06,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414295868] [2024-01-31 17:00:06,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414295868] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:06,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:06,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-01-31 17:00:06,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180343414] [2024-01-31 17:00:06,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:06,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-31 17:00:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-31 17:00:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2024-01-31 17:00:06,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 83 [2024-01-31 17:00:06,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 296 transitions, 1584 flow. Second operand has 19 states, 19 states have (on average 17.68421052631579) internal successors, (336), 19 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:06,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:06,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 83 [2024-01-31 17:00:06,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand