./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/bigshot_s2.i --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/bigshot_s2.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ab2e0ac4 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/bigshot_s2.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bigshot_s2.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-dev-ab2e0ac-m [2024-01-29 14:11:20,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 14:11:20,805 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 14:11:20,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 14:11:20,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 14:11:20,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 14:11:20,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 14:11:20,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 14:11:20,835 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 14:11:20,838 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 14:11:20,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 14:11:20,839 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 14:11:20,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 14:11:20,840 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 14:11:20,841 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 14:11:20,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 14:11:20,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 14:11:20,841 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 14:11:20,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 14:11:20,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 14:11:20,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 14:11:20,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 14:11:20,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 14:11:20,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 14:11:20,843 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 14:11:20,843 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 14:11:20,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 14:11:20,844 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 14:11:20,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 14:11:20,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 14:11:20,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 14:11:20,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 14:11:20,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:11:20,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 14:11:20,846 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 14:11:20,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 14:11:20,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 14:11:20,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 14:11:20,847 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 14:11:20,847 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 14:11:20,847 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 14:11:20,847 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 14:11:20,848 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 14:11:20,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 14:11:21,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 14:11:21,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 14:11:21,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 14:11:21,100 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 14:11:21,101 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 14:11:21,101 INFO L431 ainManager$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/bigshot_s2.yml/witness.yml [2024-01-29 14:11:21,202 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 14:11:21,202 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 14:11:21,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2024-01-29 14:11:22,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 14:11:22,973 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 14:11:22,974 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2024-01-29 14:11:23,003 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f8339036/7843d6de662240e5816b960280b629b8/FLAG021122be7 [2024-01-29 14:11:23,029 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f8339036/7843d6de662240e5816b960280b629b8 [2024-01-29 14:11:23,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 14:11:23,030 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 14:11:23,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 14:11:23,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 14:11:23,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 14:11:23,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:11:21" (1/2) ... [2024-01-29 14:11:23,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a14e09 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:11:23, skipping insertion in model container [2024-01-29 14:11:23,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:11:21" (1/2) ... [2024-01-29 14:11:23,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b24c3c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:11:23, skipping insertion in model container [2024-01-29 14:11:23,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:11:23" (2/2) ... [2024-01-29 14:11:23,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a14e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23, skipping insertion in model container [2024-01-29 14:11:23,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:11:23" (2/2) ... [2024-01-29 14:11:23,043 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 14:11:23,072 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 14:11:23,073 INFO L98 nessWitnessExtractor]: Location invariant before [L1107-L1107] expression == 1 [2024-01-29 14:11:23,073 INFO L98 nessWitnessExtractor]: Location invariant before [L1107-L1107] 0 <= expression [2024-01-29 14:11:23,073 INFO L98 nessWitnessExtractor]: Location invariant before [L1107-L1107] expression == 0 || expression == 1 [2024-01-29 14:11:23,073 INFO L98 nessWitnessExtractor]: Location invariant before [L1107-L1107] expression == 0 [2024-01-29 14:11:23,074 INFO L98 nessWitnessExtractor]: Location invariant before [L1107-L1107] expression <= 1 [2024-01-29 14:11:23,074 INFO L98 nessWitnessExtractor]: Location invariant before [L1116-L1116] (unsigned long )arg == 0UL [2024-01-29 14:11:23,074 INFO L98 nessWitnessExtractor]: Location invariant before [L1116-L1116] (unsigned long )arg == 0UL [2024-01-29 14:11:23,074 INFO L98 nessWitnessExtractor]: Location invariant before [L1112-L1112] (unsigned long )arg == 0UL [2024-01-29 14:11:23,074 INFO L98 nessWitnessExtractor]: Location invariant before [L1111-L1111] (unsigned long )arg == 0UL [2024-01-29 14:11:23,074 INFO L98 nessWitnessExtractor]: Location invariant before [L1122-L1122] v == 0 [2024-01-29 14:11:23,074 INFO L98 nessWitnessExtractor]: Location invariant before [L1117-L1117] (unsigned long )arg == 0UL [2024-01-29 14:11:23,117 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 14:11:23,497 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2024-01-29 14:11:23,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:11:23,524 INFO L202 MainTranslator]: Completed pre-run [2024-01-29 14:11:23,565 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2024-01-29 14:11:23,567 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int expression) { if (!expression) { ERROR: {reach_error();abort();}}; return; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:11:23,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:11:23,652 INFO L206 MainTranslator]: Completed translation [2024-01-29 14:11:23,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23 WrapperNode [2024-01-29 14:11:23,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 14:11:23,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 14:11:23,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 14:11:23,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 14:11:23,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (1/1) ... [2024-01-29 14:11:23,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (1/1) ... [2024-01-29 14:11:23,733 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2024-01-29 14:11:23,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 14:11:23,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 14:11:23,736 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 14:11:23,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 14:11:23,749 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (1/1) ... [2024-01-29 14:11:23,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (1/1) ... [2024-01-29 14:11:23,760 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (1/1) ... [2024-01-29 14:11:23,781 INFO L175 MemorySlicer]: Split 17 memory accesses to 5 slices as follows [2, 9, 2, 2, 2]. 53 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0, 0]. The 3 writes are split as follows [0, 0, 1, 1, 1]. [2024-01-29 14:11:23,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (1/1) ... [2024-01-29 14:11:23,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (1/1) ... [2024-01-29 14:11:23,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (1/1) ... [2024-01-29 14:11:23,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (1/1) ... [2024-01-29 14:11:23,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (1/1) ... [2024-01-29 14:11:23,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (1/1) ... [2024-01-29 14:11:23,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 14:11:23,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 14:11:23,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 14:11:23,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 14:11:23,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (1/1) ... [2024-01-29 14:11:23,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:11:23,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:11:23,886 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) [2024-01-29 14:11:23,891 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 [2024-01-29 14:11:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 14:11:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 14:11:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-01-29 14:11:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-01-29 14:11:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-01-29 14:11:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-01-29 14:11:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-01-29 14:11:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 14:11:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 14:11:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 14:11:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-29 14:11:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-29 14:11:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-29 14:11:23,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-29 14:11:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-29 14:11:23,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-29 14:11:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 14:11:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 14:11:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 14:11:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-29 14:11:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-29 14:11:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-29 14:11:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 14:11:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 14:11:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 14:11:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 14:11:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-29 14:11:23,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-29 14:11:23,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 14:11:23,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 14:11:23,918 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 14:11:24,037 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 14:11:24,040 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 14:11:24,188 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 14:11:24,190 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 14:11:24,291 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 14:11:24,291 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-29 14:11:24,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:11:24 BoogieIcfgContainer [2024-01-29 14:11:24,292 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 14:11:24,294 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 14:11:24,294 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 14:11:24,297 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 14:11:24,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:11:21" (1/4) ... [2024-01-29 14:11:24,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae501e4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:11:24, skipping insertion in model container [2024-01-29 14:11:24,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 02:11:23" (2/4) ... [2024-01-29 14:11:24,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae501e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:11:24, skipping insertion in model container [2024-01-29 14:11:24,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:23" (3/4) ... [2024-01-29 14:11:24,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae501e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:11:24, skipping insertion in model container [2024-01-29 14:11:24,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:11:24" (4/4) ... [2024-01-29 14:11:24,302 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2024-01-29 14:11:24,315 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 14:11:24,316 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-01-29 14:11:24,316 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 14:11:24,362 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-29 14:11:24,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 88 flow [2024-01-29 14:11:24,413 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2024-01-29 14:11:24,414 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:11:24,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 4/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-01-29 14:11:24,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 37 transitions, 88 flow [2024-01-29 14:11:24,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 76 flow [2024-01-29 14:11:24,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:11:24,436 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;@638e70c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:11:24,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-01-29 14:11:24,439 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:11:24,439 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 14:11:24,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:11:24,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:24,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 14:11:24,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-01-29 14:11:24,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:24,444 INFO L85 PathProgramCache]: Analyzing trace with hash 7565, now seen corresponding path program 1 times [2024-01-29 14:11:24,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:24,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969587567] [2024-01-29 14:11:24,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:24,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:24,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:24,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969587567] [2024-01-29 14:11:24,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969587567] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:24,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:24,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:11:24,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693054302] [2024-01-29 14:11:24,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:24,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:11:24,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:24,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:11:24,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:11:24,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-01-29 14:11:24,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:24,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:24,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-01-29 14:11:24,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:24,719 INFO L124 PetriNetUnfolderBase]: 10/57 cut-off events. [2024-01-29 14:11:24,719 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-29 14:11:24,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 57 events. 10/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 4 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 73. Up to 27 conditions per place. [2024-01-29 14:11:24,722 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 20 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2024-01-29 14:11:24,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 131 flow [2024-01-29 14:11:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:11:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:11:24,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-01-29 14:11:24,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2024-01-29 14:11:24,732 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 3 states and 70 transitions. [2024-01-29 14:11:24,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 131 flow [2024-01-29 14:11:24,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 121 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-29 14:11:24,738 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 70 flow [2024-01-29 14:11:24,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2024-01-29 14:11:24,745 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2024-01-29 14:11:24,746 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 70 flow [2024-01-29 14:11:24,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:24,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:24,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 14:11:24,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 14:11:24,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-01-29 14:11:24,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:24,748 INFO L85 PathProgramCache]: Analyzing trace with hash 225628379, now seen corresponding path program 1 times [2024-01-29 14:11:24,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:24,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458221422] [2024-01-29 14:11:24,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:24,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:24,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:24,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458221422] [2024-01-29 14:11:24,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458221422] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:24,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:24,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:11:24,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030994492] [2024-01-29 14:11:24,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:24,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:11:24,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:11:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:11:24,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-01-29 14:11:24,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:24,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:24,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-01-29 14:11:24,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:24,993 INFO L124 PetriNetUnfolderBase]: 10/53 cut-off events. [2024-01-29 14:11:24,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:11:24,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 53 events. 10/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 5 based on Foata normal form. 2/51 useless extension candidates. Maximal degree in co-relation 54. Up to 34 conditions per place. [2024-01-29 14:11:24,994 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 17 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-01-29 14:11:24,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 106 flow [2024-01-29 14:11:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:11:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:11:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-01-29 14:11:24,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-01-29 14:11:24,996 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 70 flow. Second operand 4 states and 77 transitions. [2024-01-29 14:11:24,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 106 flow [2024-01-29 14:11:24,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:11:24,997 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 64 flow [2024-01-29 14:11:24,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2024-01-29 14:11:24,998 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2024-01-29 14:11:24,998 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 64 flow [2024-01-29 14:11:24,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:24,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:24,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:24,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 14:11:24,999 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-01-29 14:11:24,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:25,000 INFO L85 PathProgramCache]: Analyzing trace with hash -886870397, now seen corresponding path program 1 times [2024-01-29 14:11:25,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:25,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141882503] [2024-01-29 14:11:25,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:25,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:25,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:25,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:25,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141882503] [2024-01-29 14:11:25,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141882503] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:25,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:25,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:11:25,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830800674] [2024-01-29 14:11:25,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:25,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:11:25,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:25,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:11:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:11:25,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-01-29 14:11:25,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2024-01-29 14:11:25,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:25,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-01-29 14:11:25,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:25,210 INFO L124 PetriNetUnfolderBase]: 10/43 cut-off events. [2024-01-29 14:11:25,212 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:11:25,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 43 events. 10/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 2 based on Foata normal form. 4/46 useless extension candidates. Maximal degree in co-relation 69. Up to 18 conditions per place. [2024-01-29 14:11:25,214 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 17 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2024-01-29 14:11:25,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 98 flow [2024-01-29 14:11:25,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:11:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:11:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-01-29 14:11:25,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-01-29 14:11:25,223 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 64 flow. Second operand 4 states and 74 transitions. [2024-01-29 14:11:25,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 98 flow [2024-01-29 14:11:25,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 95 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:11:25,225 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 59 flow [2024-01-29 14:11:25,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=59, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2024-01-29 14:11:25,225 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2024-01-29 14:11:25,226 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 59 flow [2024-01-29 14:11:25,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2024-01-29 14:11:25,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:25,226 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] [2024-01-29 14:11:25,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 14:11:25,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-01-29 14:11:25,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1914405790, now seen corresponding path program 1 times [2024-01-29 14:11:25,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:25,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304364767] [2024-01-29 14:11:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:25,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:25,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:25,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304364767] [2024-01-29 14:11:25,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304364767] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:25,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:25,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:11:25,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130629283] [2024-01-29 14:11:25,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:25,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:11:25,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:25,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:11:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:11:25,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-01-29 14:11:25,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:25,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:25,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-01-29 14:11:25,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:25,301 INFO L124 PetriNetUnfolderBase]: 8/38 cut-off events. [2024-01-29 14:11:25,302 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:11:25,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 38 events. 8/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 24 event pairs, 4 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 64. Up to 26 conditions per place. [2024-01-29 14:11:25,302 INFO L140 encePairwiseOnDemand]: 35/37 looper letters, 17 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2024-01-29 14:11:25,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 95 flow [2024-01-29 14:11:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:11:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:11:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-01-29 14:11:25,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6036036036036037 [2024-01-29 14:11:25,304 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 59 flow. Second operand 3 states and 67 transitions. [2024-01-29 14:11:25,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 95 flow [2024-01-29 14:11:25,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 25 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:11:25,305 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 56 flow [2024-01-29 14:11:25,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-01-29 14:11:25,305 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2024-01-29 14:11:25,306 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 56 flow [2024-01-29 14:11:25,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:25,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:25,306 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] [2024-01-29 14:11:25,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 14:11:25,306 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-01-29 14:11:25,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash -36492107, now seen corresponding path program 1 times [2024-01-29 14:11:25,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:25,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081491869] [2024-01-29 14:11:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:25,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:25,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:25,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081491869] [2024-01-29 14:11:25,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081491869] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:25,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:25,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-29 14:11:25,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306051650] [2024-01-29 14:11:25,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:25,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-29 14:11:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:25,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-29 14:11:25,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-01-29 14:11:25,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-01-29 14:11:25,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 56 flow. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:25,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:25,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-01-29 14:11:25,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:25,654 INFO L124 PetriNetUnfolderBase]: 13/56 cut-off events. [2024-01-29 14:11:25,654 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:11:25,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 56 events. 13/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 6 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 101. Up to 31 conditions per place. [2024-01-29 14:11:25,655 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 19 selfloop transitions, 5 changer transitions 5/35 dead transitions. [2024-01-29 14:11:25,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 137 flow [2024-01-29 14:11:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-29 14:11:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-29 14:11:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-01-29 14:11:25,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-01-29 14:11:25,658 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 56 flow. Second operand 8 states and 142 transitions. [2024-01-29 14:11:25,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 137 flow [2024-01-29 14:11:25,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:11:25,660 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 83 flow [2024-01-29 14:11:25,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=55, 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=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=83, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2024-01-29 14:11:25,663 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-01-29 14:11:25,663 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 83 flow [2024-01-29 14:11:25,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:25,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:25,663 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:25,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 14:11:25,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-01-29 14:11:25,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash -810390334, now seen corresponding path program 1 times [2024-01-29 14:11:25,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:25,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019439919] [2024-01-29 14:11:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:25,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:25,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:25,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019439919] [2024-01-29 14:11:25,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019439919] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:11:25,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559005753] [2024-01-29 14:11:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:25,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:11:25,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:11:25,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:11:25,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-29 14:11:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:25,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 11 conjunts are in the unsatisfiable core [2024-01-29 14:11:25,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:11:26,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-01-29 14:11:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:26,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:11:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:26,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559005753] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:11:26,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:11:26,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-01-29 14:11:26,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334051232] [2024-01-29 14:11:26,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:11:26,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-29 14:11:26,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:26,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-29 14:11:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-01-29 14:11:26,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-01-29 14:11:26,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 83 flow. Second operand has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:26,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:26,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-01-29 14:11:26,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:26,255 INFO L124 PetriNetUnfolderBase]: 15/57 cut-off events. [2024-01-29 14:11:26,256 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-29 14:11:26,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 57 events. 15/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 7 based on Foata normal form. 2/57 useless extension candidates. Maximal degree in co-relation 134. Up to 33 conditions per place. [2024-01-29 14:11:26,256 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 21 selfloop transitions, 6 changer transitions 1/34 dead transitions. [2024-01-29 14:11:26,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 157 flow [2024-01-29 14:11:26,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-29 14:11:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-29 14:11:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-01-29 14:11:26,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444015444015444 [2024-01-29 14:11:26,257 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 83 flow. Second operand 7 states and 141 transitions. [2024-01-29 14:11:26,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 157 flow [2024-01-29 14:11:26,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 152 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-29 14:11:26,259 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 108 flow [2024-01-29 14:11:26,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=78, 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=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2024-01-29 14:11:26,259 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2024-01-29 14:11:26,259 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 108 flow [2024-01-29 14:11:26,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:26,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:26,260 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:26,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-29 14:11:26,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-01-29 14:11:26,461 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-01-29 14:11:26,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash -722349663, now seen corresponding path program 2 times [2024-01-29 14:11:26,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:26,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996076767] [2024-01-29 14:11:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:26,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:26,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:26,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996076767] [2024-01-29 14:11:26,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996076767] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:11:26,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450430817] [2024-01-29 14:11:26,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-29 14:11:26,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:11:26,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:11:26,628 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:11:26,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-29 14:11:26,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-29 14:11:26,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:11:26,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjunts are in the unsatisfiable core [2024-01-29 14:11:26,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:11:26,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-01-29 14:11:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:26,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:11:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:26,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450430817] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:11:26,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:11:26,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-01-29 14:11:26,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013151013] [2024-01-29 14:11:26,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:11:26,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-01-29 14:11:26,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:26,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-01-29 14:11:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-01-29 14:11:26,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-01-29 14:11:26,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 108 flow. Second operand has 17 states, 17 states have (on average 19.235294117647058) internal successors, (327), 17 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:26,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:26,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-01-29 14:11:26,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:27,085 INFO L124 PetriNetUnfolderBase]: 17/63 cut-off events. [2024-01-29 14:11:27,086 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-01-29 14:11:27,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 63 events. 17/63 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 7 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 167. Up to 33 conditions per place. [2024-01-29 14:11:27,087 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 23 selfloop transitions, 7 changer transitions 1/37 dead transitions. [2024-01-29 14:11:27,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 37 transitions, 196 flow [2024-01-29 14:11:27,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-29 14:11:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-29 14:11:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-01-29 14:11:27,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2024-01-29 14:11:27,088 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 108 flow. Second operand 8 states and 160 transitions. [2024-01-29 14:11:27,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 37 transitions, 196 flow [2024-01-29 14:11:27,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 37 transitions, 184 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-29 14:11:27,090 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 132 flow [2024-01-29 14:11:27,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=132, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2024-01-29 14:11:27,090 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-01-29 14:11:27,091 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 132 flow [2024-01-29 14:11:27,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.235294117647058) internal successors, (327), 17 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:27,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:27,091 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:27,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-29 14:11:27,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-01-29 14:11:27,304 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-01-29 14:11:27,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:27,305 INFO L85 PathProgramCache]: Analyzing trace with hash -667212066, now seen corresponding path program 3 times [2024-01-29 14:11:27,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:27,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624163968] [2024-01-29 14:11:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:27,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:27,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624163968] [2024-01-29 14:11:27,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624163968] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:11:27,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240874916] [2024-01-29 14:11:27,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-29 14:11:27,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:11:27,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:11:27,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:11:27,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-29 14:11:27,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-01-29 14:11:27,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:11:27,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-29 14:11:27,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:11:27,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-01-29 14:11:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:27,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:11:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:27,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240874916] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:11:27,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:11:27,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-01-29 14:11:27,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304183357] [2024-01-29 14:11:27,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:11:27,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-29 14:11:27,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:27,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-29 14:11:27,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-01-29 14:11:27,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-01-29 14:11:27,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 132 flow. Second operand has 20 states, 20 states have (on average 19.05) internal successors, (381), 20 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:27,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:27,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-01-29 14:11:27,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:27,983 INFO L124 PetriNetUnfolderBase]: 19/69 cut-off events. [2024-01-29 14:11:27,984 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-01-29 14:11:27,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 69 events. 19/69 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 7 based on Foata normal form. 2/69 useless extension candidates. Maximal degree in co-relation 205. Up to 33 conditions per place. [2024-01-29 14:11:27,985 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 25 selfloop transitions, 8 changer transitions 1/40 dead transitions. [2024-01-29 14:11:27,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 40 transitions, 234 flow [2024-01-29 14:11:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-29 14:11:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-29 14:11:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-01-29 14:11:27,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375375375375375 [2024-01-29 14:11:27,986 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 132 flow. Second operand 9 states and 179 transitions. [2024-01-29 14:11:27,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 40 transitions, 234 flow [2024-01-29 14:11:27,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 216 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-29 14:11:27,988 INFO L231 Difference]: Finished difference. Result has 52 places, 33 transitions, 156 flow [2024-01-29 14:11:27,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=33} [2024-01-29 14:11:27,988 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-01-29 14:11:27,989 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 33 transitions, 156 flow [2024-01-29 14:11:27,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.05) internal successors, (381), 20 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:27,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:27,989 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:28,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-29 14:11:28,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:11:28,201 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-01-29 14:11:28,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash 780411099, now seen corresponding path program 4 times [2024-01-29 14:11:28,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:28,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699066352] [2024-01-29 14:11:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:28,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:28,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:28,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699066352] [2024-01-29 14:11:28,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699066352] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:11:28,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314966366] [2024-01-29 14:11:28,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-29 14:11:28,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:11:28,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:11:28,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:11:28,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-29 14:11:28,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-29 14:11:28,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:11:28,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 17 conjunts are in the unsatisfiable core [2024-01-29 14:11:28,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:11:28,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-01-29 14:11:28,637 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:28,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:11:28,749 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:28,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314966366] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:11:28,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:11:28,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-01-29 14:11:28,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670385804] [2024-01-29 14:11:28,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:11:28,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-29 14:11:28,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:28,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-29 14:11:28,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2024-01-29 14:11:28,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-01-29 14:11:28,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 33 transitions, 156 flow. Second operand has 23 states, 23 states have (on average 18.91304347826087) internal successors, (435), 23 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:28,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:28,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-01-29 14:11:28,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:29,032 INFO L124 PetriNetUnfolderBase]: 21/75 cut-off events. [2024-01-29 14:11:29,033 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-01-29 14:11:29,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 75 events. 21/75 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 7 based on Foata normal form. 2/75 useless extension candidates. Maximal degree in co-relation 243. Up to 33 conditions per place. [2024-01-29 14:11:29,048 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 27 selfloop transitions, 9 changer transitions 1/43 dead transitions. [2024-01-29 14:11:29,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 43 transitions, 272 flow [2024-01-29 14:11:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-29 14:11:29,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-29 14:11:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-01-29 14:11:29,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351351351351351 [2024-01-29 14:11:29,051 INFO L175 Difference]: Start difference. First operand has 52 places, 33 transitions, 156 flow. Second operand 10 states and 198 transitions. [2024-01-29 14:11:29,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 43 transitions, 272 flow [2024-01-29 14:11:29,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 43 transitions, 248 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-29 14:11:29,053 INFO L231 Difference]: Finished difference. Result has 57 places, 35 transitions, 180 flow [2024-01-29 14:11:29,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, 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=10, PETRI_FLOW=180, PETRI_PLACES=57, PETRI_TRANSITIONS=35} [2024-01-29 14:11:29,053 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-01-29 14:11:29,053 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 35 transitions, 180 flow [2024-01-29 14:11:29,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.91304347826087) internal successors, (435), 23 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:29,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:29,054 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:29,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-29 14:11:29,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:11:29,254 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-01-29 14:11:29,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:29,255 INFO L85 PathProgramCache]: Analyzing trace with hash 376868760, now seen corresponding path program 5 times [2024-01-29 14:11:29,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:29,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464188660] [2024-01-29 14:11:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:29,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:29,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:29,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464188660] [2024-01-29 14:11:29,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464188660] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:11:29,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961341573] [2024-01-29 14:11:29,487 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-29 14:11:29,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:11:29,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:11:29,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:11:29,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-29 14:11:29,598 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-01-29 14:11:29,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:11:29,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 19 conjunts are in the unsatisfiable core [2024-01-29 14:11:29,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:11:29,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-01-29 14:11:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:29,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:11:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:29,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961341573] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:11:29,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:11:29,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-01-29 14:11:29,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033686134] [2024-01-29 14:11:29,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:11:29,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-01-29 14:11:29,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:29,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-01-29 14:11:29,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-01-29 14:11:29,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-01-29 14:11:29,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 35 transitions, 180 flow. Second operand has 26 states, 26 states have (on average 18.807692307692307) internal successors, (489), 26 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:29,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:29,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-01-29 14:11:29,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:30,091 INFO L124 PetriNetUnfolderBase]: 23/81 cut-off events. [2024-01-29 14:11:30,092 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-01-29 14:11:30,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 81 events. 23/81 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 7 based on Foata normal form. 2/81 useless extension candidates. Maximal degree in co-relation 281. Up to 33 conditions per place. [2024-01-29 14:11:30,094 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 29 selfloop transitions, 10 changer transitions 1/46 dead transitions. [2024-01-29 14:11:30,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 46 transitions, 310 flow [2024-01-29 14:11:30,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-29 14:11:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-29 14:11:30,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-01-29 14:11:30,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331695331695332 [2024-01-29 14:11:30,095 INFO L175 Difference]: Start difference. First operand has 57 places, 35 transitions, 180 flow. Second operand 11 states and 217 transitions. [2024-01-29 14:11:30,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 46 transitions, 310 flow [2024-01-29 14:11:30,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 46 transitions, 280 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-01-29 14:11:30,098 INFO L231 Difference]: Finished difference. Result has 62 places, 37 transitions, 204 flow [2024-01-29 14:11:30,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=204, PETRI_PLACES=62, PETRI_TRANSITIONS=37} [2024-01-29 14:11:30,099 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-01-29 14:11:30,099 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 37 transitions, 204 flow [2024-01-29 14:11:30,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 18.807692307692307) internal successors, (489), 26 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:30,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:30,100 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:30,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-29 14:11:30,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-01-29 14:11:30,313 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-01-29 14:11:30,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:30,314 INFO L85 PathProgramCache]: Analyzing trace with hash -880262379, now seen corresponding path program 6 times [2024-01-29 14:11:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:30,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060490501] [2024-01-29 14:11:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:30,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:30,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:30,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060490501] [2024-01-29 14:11:30,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060490501] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:11:30,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986894939] [2024-01-29 14:11:30,576 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-29 14:11:30,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:11:30,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:11:30,592 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:11:30,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-29 14:11:30,706 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-01-29 14:11:30,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:11:30,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-29 14:11:30,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:11:30,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-01-29 14:11:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:30,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:11:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:30,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986894939] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:11:30,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:11:30,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2024-01-29 14:11:30,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320204471] [2024-01-29 14:11:30,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:11:30,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-01-29 14:11:30,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:30,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-01-29 14:11:30,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2024-01-29 14:11:30,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-01-29 14:11:30,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 37 transitions, 204 flow. Second operand has 29 states, 29 states have (on average 18.724137931034484) internal successors, (543), 29 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:30,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:30,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-01-29 14:11:30,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:31,306 INFO L124 PetriNetUnfolderBase]: 25/87 cut-off events. [2024-01-29 14:11:31,306 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-01-29 14:11:31,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 87 events. 25/87 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 7 based on Foata normal form. 2/87 useless extension candidates. Maximal degree in co-relation 319. Up to 33 conditions per place. [2024-01-29 14:11:31,307 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 31 selfloop transitions, 11 changer transitions 1/49 dead transitions. [2024-01-29 14:11:31,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 49 transitions, 348 flow [2024-01-29 14:11:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-29 14:11:31,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-29 14:11:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 236 transitions. [2024-01-29 14:11:31,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-01-29 14:11:31,311 INFO L175 Difference]: Start difference. First operand has 62 places, 37 transitions, 204 flow. Second operand 12 states and 236 transitions. [2024-01-29 14:11:31,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 49 transitions, 348 flow [2024-01-29 14:11:31,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 49 transitions, 312 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-01-29 14:11:31,313 INFO L231 Difference]: Finished difference. Result has 67 places, 39 transitions, 228 flow [2024-01-29 14:11:31,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=228, PETRI_PLACES=67, PETRI_TRANSITIONS=39} [2024-01-29 14:11:31,313 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2024-01-29 14:11:31,313 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 39 transitions, 228 flow [2024-01-29 14:11:31,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 18.724137931034484) internal successors, (543), 29 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:11:31,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:31,314 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:31,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-29 14:11:31,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:11:31,515 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-01-29 14:11:31,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:31,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2097476782, now seen corresponding path program 7 times [2024-01-29 14:11:31,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:31,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797704628] [2024-01-29 14:11:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:31,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 20 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:32,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:32,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797704628] [2024-01-29 14:11:32,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797704628] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:11:32,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259276659] [2024-01-29 14:11:32,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-29 14:11:32,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:11:32,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:11:32,497 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:11:32,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-29 14:11:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:32,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 47 conjunts are in the unsatisfiable core [2024-01-29 14:11:32,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:11:32,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-01-29 14:11:32,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-29 14:11:32,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-01-29 14:11:32,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-29 14:11:32,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-01-29 14:11:32,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-29 14:11:32,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-01-29 14:11:32,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-29 14:11:32,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-01-29 14:11:32,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-29 14:11:32,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-01-29 14:11:32,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-29 14:11:32,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-01-29 14:11:32,923 INFO L349 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2024-01-29 14:11:32,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2024-01-29 14:11:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 36 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:11:32,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:13:54,006 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_335 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| Int) (v_ArrVal_332 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| Int) (v_ArrVal_329 Int) (v_ArrVal_327 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| Int) (v_ArrVal_337 Int)) (or (= (select (select (store |c_#memory_int#3| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (store (select |c_#memory_int#3| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_327) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_329) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_332) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_335) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_337)) c_~v~0.base) c_~v~0.offset) 66) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| 1)))) is different from false [2024-01-29 14:15:31,076 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_87| Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_87| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)) (forall ((|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_86| Int) (v_ArrVal_335 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| Int) (v_ArrVal_332 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| Int) (v_ArrVal_329 Int) (v_ArrVal_327 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| Int) (v_ArrVal_337 Int) (v_ArrVal_325 Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_86| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_87| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_86| 1)) (= 66 (select (select (store |c_#memory_int#3| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (store (store (select |c_#memory_int#3| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_87| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_325) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_86| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_327) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_329) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_332) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_335) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_337)) c_~v~0.base) c_~v~0.offset)))))) is different from false [2024-01-29 14:15:31,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3287018 treesize of output 3282922 [2024-01-29 14:15:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 20 proven. 17 refuted. 3 times theorem prover too weak. 2 trivial. 14 not checked. [2024-01-29 14:15:39,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259276659] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:15:39,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:15:39,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 17] total 38 [2024-01-29 14:15:39,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989219167] [2024-01-29 14:15:39,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:15:39,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-01-29 14:15:39,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:15:39,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-01-29 14:15:39,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=977, Unknown=51, NotChecked=142, Total=1482 [2024-01-29 14:15:40,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-01-29 14:15:40,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 39 transitions, 228 flow. Second operand has 39 states, 39 states have (on average 14.846153846153847) internal successors, (579), 39 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:15:40,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:15:40,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-01-29 14:15:40,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:15:41,176 INFO L124 PetriNetUnfolderBase]: 23/83 cut-off events. [2024-01-29 14:15:41,176 INFO L125 PetriNetUnfolderBase]: For 234/234 co-relation queries the response was YES. [2024-01-29 14:15:41,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 83 events. 23/83 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 2 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 307. Up to 20 conditions per place. [2024-01-29 14:15:41,177 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2024-01-29 14:15:41,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 47 transitions, 328 flow [2024-01-29 14:15:41,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-29 14:15:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-29 14:15:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 224 transitions. [2024-01-29 14:15:41,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-01-29 14:15:41,178 INFO L175 Difference]: Start difference. First operand has 67 places, 39 transitions, 228 flow. Second operand 14 states and 224 transitions. [2024-01-29 14:15:41,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 47 transitions, 328 flow [2024-01-29 14:15:41,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 47 transitions, 286 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-01-29 14:15:41,180 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2024-01-29 14:15:41,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2024-01-29 14:15:41,180 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-01-29 14:15:41,180 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2024-01-29 14:15:41,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 14.846153846153847) internal successors, (579), 39 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:15:41,183 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 14 remaining) [2024-01-29 14:15:41,183 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 14 remaining) [2024-01-29 14:15:41,183 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 14 remaining) [2024-01-29 14:15:41,183 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 14 remaining) [2024-01-29 14:15:41,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 14 remaining) [2024-01-29 14:15:41,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 14 remaining) [2024-01-29 14:15:41,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (7 of 14 remaining) [2024-01-29 14:15:41,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2024-01-29 14:15:41,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-01-29 14:15:41,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 14 remaining) [2024-01-29 14:15:41,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 14 remaining) [2024-01-29 14:15:41,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 14 remaining) [2024-01-29 14:15:41,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 14 remaining) [2024-01-29 14:15:41,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 14 remaining) [2024-01-29 14:15:41,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-29 14:15:41,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:15:41,388 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1] [2024-01-29 14:15:41,393 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-29 14:15:41,393 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-29 14:15:41,395 INFO L503 ceAbstractionStarter]: Automizer considered 6 witness invariants [2024-01-29 14:15:41,395 INFO L504 ceAbstractionStarter]: WitnessConsidered=6 [2024-01-29 14:15:41,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 02:15:41 BasicIcfg [2024-01-29 14:15:41,396 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-29 14:15:41,396 INFO L158 Benchmark]: Toolchain (without parser) took 258366.30ms. Allocated memory was 148.9MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 87.6MB in the beginning and 952.5MB in the end (delta: -864.9MB). Peak memory consumption was 280.1MB. Max. memory is 16.1GB. [2024-01-29 14:15:41,397 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 148.9MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 14:15:41,397 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 148.9MB. Free memory was 112.5MB in the beginning and 112.5MB in the end (delta: 20.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 14:15:41,397 INFO L158 Benchmark]: CACSL2BoogieTranslator took 619.55ms. Allocated memory is still 148.9MB. Free memory was 87.0MB in the beginning and 51.3MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-01-29 14:15:41,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.09ms. Allocated memory was 148.9MB in the beginning and 249.6MB in the end (delta: 100.7MB). Free memory was 51.3MB in the beginning and 218.1MB in the end (delta: -166.8MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2024-01-29 14:15:41,397 INFO L158 Benchmark]: Boogie Preprocessor took 95.25ms. Allocated memory is still 249.6MB. Free memory was 218.1MB in the beginning and 217.9MB in the end (delta: 212.1kB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2024-01-29 14:15:41,397 INFO L158 Benchmark]: RCFGBuilder took 461.26ms. Allocated memory is still 249.6MB. Free memory was 216.8MB in the beginning and 190.6MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-01-29 14:15:41,397 INFO L158 Benchmark]: TraceAbstraction took 257101.88ms. Allocated memory was 249.6MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 190.6MB in the beginning and 952.5MB in the end (delta: -761.9MB). Peak memory consumption was 279.3MB. Max. memory is 16.1GB. [2024-01-29 14:15:41,398 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 0.17ms. Allocated memory is still 148.9MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 148.9MB. Free memory was 112.5MB in the beginning and 112.5MB in the end (delta: 20.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 619.55ms. Allocated memory is still 148.9MB. Free memory was 87.0MB in the beginning and 51.3MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.09ms. Allocated memory was 148.9MB in the beginning and 249.6MB in the end (delta: 100.7MB). Free memory was 51.3MB in the beginning and 218.1MB in the end (delta: -166.8MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 95.25ms. Allocated memory is still 249.6MB. Free memory was 218.1MB in the beginning and 217.9MB in the end (delta: 212.1kB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * RCFGBuilder took 461.26ms. Allocated memory is still 249.6MB. Free memory was 216.8MB in the beginning and 190.6MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 257101.88ms. Allocated memory was 249.6MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 190.6MB in the beginning and 952.5MB in the end (delta: -761.9MB). Peak memory consumption was 279.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1111]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1112]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1116]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1116]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1117]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1122]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1107]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 54 locations, 14 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: 257.0s, OverallIterations: 12, TraceHistogramMax: 8, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 444 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 420 mSDsluCounter, 391 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 76 IncrementalHoareTripleChecker+Unchecked, 372 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2987 IncrementalHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 19 mSDtfsCounter, 2987 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 567 GetRequests, 335 SyntacticMatches, 10 SemanticMatches, 222 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 240.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=228occurred in iteration=11, InterpolantAutomatonStates: 93, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 251.2s InterpolantComputationTime, 496 NumberOfCodeBlocks, 496 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 687 ConstructedInterpolants, 14 QuantifiedInterpolants, 6275 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1575 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 78/504 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-29 14:15:41,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE