./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/bench-exp3x3.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/bench-exp3x3.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:08:29,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:08:29,976 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:08:29,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:08:29,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:08:30,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:08:30,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:08:30,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:08:30,004 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:08:30,008 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:08:30,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:08:30,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:08:30,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:08:30,010 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:08:30,010 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:08:30,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:08:30,011 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:08:30,011 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:08:30,011 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:08:30,012 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:08:30,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:08:30,012 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:08:30,013 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:08:30,013 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:08:30,013 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:08:30,014 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:08:30,014 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:08:30,014 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:08:30,015 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:08:30,015 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:08:30,016 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:08:30,016 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:08:30,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:08:30,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:08:30,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:08:30,017 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:08:30,017 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:08:30,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:08:30,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:08:30,018 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:08:30,018 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:08:30,018 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:08:30,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:08:30,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:08:30,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:08:30,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:08:30,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:08:30,273 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:08:30,274 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:08:30,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/bench-exp3x3.wvr.yml/witness.yml [2024-02-07 19:08:30,379 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:08:30,379 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:08:30,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2024-02-07 19:08:31,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:08:31,577 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:08:31,577 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2024-02-07 19:08:31,584 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785cefd6f/19cfbf66f7f04a42bb91c22782d6f488/FLAG480d19deb [2024-02-07 19:08:31,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785cefd6f/19cfbf66f7f04a42bb91c22782d6f488 [2024-02-07 19:08:31,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:08:31,596 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:08:31,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:08:31,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:08:31,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:08:31,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:08:30" (1/2) ... [2024-02-07 19:08:31,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7d1551 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:08:31, skipping insertion in model container [2024-02-07 19:08:31,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:08:30" (1/2) ... [2024-02-07 19:08:31,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35ca74a7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:08:31, skipping insertion in model container [2024-02-07 19:08:31,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:08:31" (2/2) ... [2024-02-07 19:08:31,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7d1551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31, skipping insertion in model container [2024-02-07 19:08:31,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:08:31" (2/2) ... [2024-02-07 19:08:31,606 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:08:31,621 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:08:31,625 INFO L76 edCorrectnessWitness]: Location invariant before [L89-L89] ((((0LL - (long long )n) + (long long )x1 >= 0LL) && ((long long )n + (long long )x1 >= 0LL)) && ((0LL - (long long )n) - (long long )x1 >= 0LL)) && ((long long )n - (long long )x1 >= 0LL) [2024-02-07 19:08:31,642 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:08:31,765 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2703,2716] [2024-02-07 19:08:31,768 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:08:31,781 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 19:08:31,856 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2703,2716] [2024-02-07 19:08:31,857 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:08:31,871 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:08:31,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31 WrapperNode [2024-02-07 19:08:31,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:08:31,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:08:31,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:08:31,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:08:31,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (1/1) ... [2024-02-07 19:08:31,898 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (1/1) ... [2024-02-07 19:08:31,932 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2024-02-07 19:08:31,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:08:31,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:08:31,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:08:31,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:08:31,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (1/1) ... [2024-02-07 19:08:31,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (1/1) ... [2024-02-07 19:08:31,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (1/1) ... [2024-02-07 19:08:31,970 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2024-02-07 19:08:31,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (1/1) ... [2024-02-07 19:08:31,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (1/1) ... [2024-02-07 19:08:31,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (1/1) ... [2024-02-07 19:08:31,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (1/1) ... [2024-02-07 19:08:31,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (1/1) ... [2024-02-07 19:08:32,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (1/1) ... [2024-02-07 19:08:32,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:08:32,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:08:32,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:08:32,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:08:32,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (1/1) ... [2024-02-07 19:08:32,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:08:32,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:08:32,041 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) [2024-02-07 19:08:32,060 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 [2024-02-07 19:08:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:08:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 19:08:32,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 19:08:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 19:08:32,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 19:08:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-07 19:08:32,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-07 19:08:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-07 19:08:32,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-07 19:08:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:08:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:08:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:08:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:08:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:08:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 19:08:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-02-07 19:08:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-02-07 19:08:32,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-02-07 19:08:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-02-07 19:08:32,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-02-07 19:08:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:08:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:08:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:08:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:08:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:08:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:08:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 19:08:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-02-07 19:08:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:08:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:08:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:08:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:08:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:08:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:08:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 19:08:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 19:08:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-02-07 19:08:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:08:32,081 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:08:32,205 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:08:32,208 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:08:32,422 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:08:32,423 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:08:32,616 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:08:32,616 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-07 19:08:32,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:08:32 BoogieIcfgContainer [2024-02-07 19:08:32,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:08:32,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:08:32,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:08:32,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:08:32,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:08:30" (1/4) ... [2024-02-07 19:08:32,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ac84be and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:08:32, skipping insertion in model container [2024-02-07 19:08:32,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:08:31" (2/4) ... [2024-02-07 19:08:32,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ac84be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:08:32, skipping insertion in model container [2024-02-07 19:08:32,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:31" (3/4) ... [2024-02-07 19:08:32,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ac84be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:08:32, skipping insertion in model container [2024-02-07 19:08:32,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:08:32" (4/4) ... [2024-02-07 19:08:32,627 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-02-07 19:08:32,642 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:08:32,643 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-02-07 19:08:32,643 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:08:32,714 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-02-07 19:08:32,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 148 flow [2024-02-07 19:08:32,785 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2024-02-07 19:08:32,785 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 19:08:32,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 47 events. 6/47 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-02-07 19:08:32,788 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 148 flow [2024-02-07 19:08:32,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 46 transitions, 128 flow [2024-02-07 19:08:32,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:08:32,806 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;@73779492, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:08:32,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-02-07 19:08:32,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:08:32,809 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 19:08:32,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:08:32,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:32,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 19:08:32,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 19:08:32,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:32,815 INFO L85 PathProgramCache]: Analyzing trace with hash 13922, now seen corresponding path program 1 times [2024-02-07 19:08:32,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:32,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142498734] [2024-02-07 19:08:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:32,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:33,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142498734] [2024-02-07 19:08:33,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142498734] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:33,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:33,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:08:33,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472368444] [2024-02-07 19:08:33,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:33,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:08:33,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:33,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:08:33,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:08:33,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-02-07 19:08:33,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:33,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:33,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-02-07 19:08:33,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:34,740 INFO L124 PetriNetUnfolderBase]: 16776/19691 cut-off events. [2024-02-07 19:08:34,740 INFO L125 PetriNetUnfolderBase]: For 647/647 co-relation queries the response was YES. [2024-02-07 19:08:34,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40118 conditions, 19691 events. 16776/19691 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 68023 event pairs, 8023 based on Foata normal form. 0/10695 useless extension candidates. Maximal degree in co-relation 29529. Up to 19327 conditions per place. [2024-02-07 19:08:34,855 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 36 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-02-07 19:08:34,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 45 transitions, 202 flow [2024-02-07 19:08:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:08:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:08:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-02-07 19:08:34,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-02-07 19:08:34,868 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 128 flow. Second operand 3 states and 78 transitions. [2024-02-07 19:08:34,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 45 transitions, 202 flow [2024-02-07 19:08:34,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-02-07 19:08:34,920 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 106 flow [2024-02-07 19:08:34,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-02-07 19:08:34,924 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -11 predicate places. [2024-02-07 19:08:34,924 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 106 flow [2024-02-07 19:08:34,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:34,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:34,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:34,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:08:34,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 19:08:34,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:34,926 INFO L85 PathProgramCache]: Analyzing trace with hash -802080569, now seen corresponding path program 1 times [2024-02-07 19:08:34,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:34,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387939260] [2024-02-07 19:08:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:34,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:35,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:35,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387939260] [2024-02-07 19:08:35,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387939260] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:35,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:35,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:08:35,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789978767] [2024-02-07 19:08:35,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:35,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:08:35,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:35,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:08:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:08:35,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 19:08:35,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:35,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:35,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 19:08:35,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:36,402 INFO L124 PetriNetUnfolderBase]: 21341/24684 cut-off events. [2024-02-07 19:08:36,403 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2024-02-07 19:08:36,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49730 conditions, 24684 events. 21341/24684 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 79736 event pairs, 1773 based on Foata normal form. 1/13586 useless extension candidates. Maximal degree in co-relation 49721. Up to 23405 conditions per place. [2024-02-07 19:08:36,504 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 64 selfloop transitions, 7 changer transitions 1/79 dead transitions. [2024-02-07 19:08:36,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 79 transitions, 329 flow [2024-02-07 19:08:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:08:36,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:08:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-02-07 19:08:36,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7232704402515723 [2024-02-07 19:08:36,508 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 106 flow. Second operand 3 states and 115 transitions. [2024-02-07 19:08:36,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 79 transitions, 329 flow [2024-02-07 19:08:36,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 79 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:08:36,512 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 149 flow [2024-02-07 19:08:36,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2024-02-07 19:08:36,512 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -10 predicate places. [2024-02-07 19:08:36,512 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 149 flow [2024-02-07 19:08:36,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:36,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:36,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:36,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:08:36,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 19:08:36,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:36,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1805683468, now seen corresponding path program 1 times [2024-02-07 19:08:36,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:36,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363852748] [2024-02-07 19:08:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:36,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:36,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:36,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363852748] [2024-02-07 19:08:36,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363852748] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:36,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:36,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:08:36,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377916972] [2024-02-07 19:08:36,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:36,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:36,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:36,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:36,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 19:08:36,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:36,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:36,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 19:08:36,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:38,593 INFO L124 PetriNetUnfolderBase]: 27885/32439 cut-off events. [2024-02-07 19:08:38,593 INFO L125 PetriNetUnfolderBase]: For 7656/7656 co-relation queries the response was YES. [2024-02-07 19:08:38,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80514 conditions, 32439 events. 27885/32439 cut-off events. For 7656/7656 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 114074 event pairs, 2675 based on Foata normal form. 294/32673 useless extension candidates. Maximal degree in co-relation 21802. Up to 14314 conditions per place. [2024-02-07 19:08:38,746 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 116 selfloop transitions, 11 changer transitions 0/134 dead transitions. [2024-02-07 19:08:38,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 134 transitions, 639 flow [2024-02-07 19:08:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:08:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:08:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-02-07 19:08:38,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7056603773584905 [2024-02-07 19:08:38,749 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 149 flow. Second operand 5 states and 187 transitions. [2024-02-07 19:08:38,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 134 transitions, 639 flow [2024-02-07 19:08:38,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 134 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:08:38,759 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 211 flow [2024-02-07 19:08:38,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2024-02-07 19:08:38,760 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2024-02-07 19:08:38,760 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 211 flow [2024-02-07 19:08:38,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:38,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:38,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:38,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:08:38,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 19:08:38,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:38,762 INFO L85 PathProgramCache]: Analyzing trace with hash -268858041, now seen corresponding path program 1 times [2024-02-07 19:08:38,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:38,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113211397] [2024-02-07 19:08:38,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:38,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:38,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:38,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113211397] [2024-02-07 19:08:38,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113211397] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:38,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:38,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:08:38,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192785593] [2024-02-07 19:08:38,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:38,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:38,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:38,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:38,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:38,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 19:08:38,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 58 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:38,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:38,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 19:08:38,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:40,456 INFO L124 PetriNetUnfolderBase]: 27399/31953 cut-off events. [2024-02-07 19:08:40,457 INFO L125 PetriNetUnfolderBase]: For 22904/22904 co-relation queries the response was YES. [2024-02-07 19:08:40,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89361 conditions, 31953 events. 27399/31953 cut-off events. For 22904/22904 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 114520 event pairs, 2133 based on Foata normal form. 486/32379 useless extension candidates. Maximal degree in co-relation 45925. Up to 13828 conditions per place. [2024-02-07 19:08:40,615 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 116 selfloop transitions, 9 changer transitions 0/132 dead transitions. [2024-02-07 19:08:40,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 132 transitions, 664 flow [2024-02-07 19:08:40,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:08:40,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:08:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2024-02-07 19:08:40,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7018867924528301 [2024-02-07 19:08:40,617 INFO L175 Difference]: Start difference. First operand has 54 places, 58 transitions, 211 flow. Second operand 5 states and 186 transitions. [2024-02-07 19:08:40,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 132 transitions, 664 flow [2024-02-07 19:08:40,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 132 transitions, 664 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:08:40,629 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 227 flow [2024-02-07 19:08:40,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-02-07 19:08:40,629 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-02-07 19:08:40,629 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 227 flow [2024-02-07 19:08:40,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:40,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:40,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:40,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:08:40,630 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 19:08:40,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash 633570210, now seen corresponding path program 1 times [2024-02-07 19:08:40,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:40,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372701035] [2024-02-07 19:08:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:40,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:40,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372701035] [2024-02-07 19:08:40,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372701035] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:08:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135962981] [2024-02-07 19:08:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:40,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:08:40,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:08:40,716 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) [2024-02-07 19:08:40,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 19:08:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:40,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-07 19:08:40,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:08:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:41,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:08:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:41,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135962981] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:08:41,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:08:41,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-02-07 19:08:41,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289644451] [2024-02-07 19:08:41,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:08:41,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:08:41,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:41,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:08:41,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:08:41,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 19:08:41,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:41,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:41,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 19:08:41,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:43,796 INFO L124 PetriNetUnfolderBase]: 36977/43925 cut-off events. [2024-02-07 19:08:43,797 INFO L125 PetriNetUnfolderBase]: For 48274/48274 co-relation queries the response was YES. [2024-02-07 19:08:43,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131123 conditions, 43925 events. 36977/43925 cut-off events. For 48274/48274 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 177776 event pairs, 5688 based on Foata normal form. 912/44577 useless extension candidates. Maximal degree in co-relation 68730. Up to 21123 conditions per place. [2024-02-07 19:08:44,096 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 138 selfloop transitions, 9 changer transitions 0/154 dead transitions. [2024-02-07 19:08:44,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 154 transitions, 922 flow [2024-02-07 19:08:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:08:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:08:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-02-07 19:08:44,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6383647798742138 [2024-02-07 19:08:44,098 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 227 flow. Second operand 6 states and 203 transitions. [2024-02-07 19:08:44,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 154 transitions, 922 flow [2024-02-07 19:08:44,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 154 transitions, 893 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:08:44,109 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 273 flow [2024-02-07 19:08:44,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-02-07 19:08:44,109 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2024-02-07 19:08:44,110 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 273 flow [2024-02-07 19:08:44,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:44,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:44,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:44,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 19:08:44,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:08:44,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 19:08:44,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1049044396, now seen corresponding path program 1 times [2024-02-07 19:08:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:44,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110035134] [2024-02-07 19:08:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:44,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:44,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:44,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110035134] [2024-02-07 19:08:44,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110035134] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:08:44,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551312784] [2024-02-07 19:08:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:44,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:08:44,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:08:44,460 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) [2024-02-07 19:08:44,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 19:08:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:44,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-07 19:08:44,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:08:44,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:44,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:08:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:44,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551312784] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:08:44,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:08:44,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-02-07 19:08:44,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414838592] [2024-02-07 19:08:44,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:08:44,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:08:44,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:44,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:08:44,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:08:44,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 19:08:44,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:44,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:44,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 19:08:44,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:48,745 INFO L124 PetriNetUnfolderBase]: 49645/60084 cut-off events. [2024-02-07 19:08:48,745 INFO L125 PetriNetUnfolderBase]: For 106394/106442 co-relation queries the response was YES. [2024-02-07 19:08:48,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207869 conditions, 60084 events. 49645/60084 cut-off events. For 106394/106442 co-relation queries the response was YES. Maximal size of possible extension queue 2117. Compared 271073 event pairs, 8210 based on Foata normal form. 1160/60568 useless extension candidates. Maximal degree in co-relation 112992. Up to 26532 conditions per place. [2024-02-07 19:08:49,236 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 9 changer transitions 0/166 dead transitions. [2024-02-07 19:08:49,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 166 transitions, 1089 flow [2024-02-07 19:08:49,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:08:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:08:49,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-02-07 19:08:49,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132075471698113 [2024-02-07 19:08:49,238 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 273 flow. Second operand 6 states and 195 transitions. [2024-02-07 19:08:49,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 166 transitions, 1089 flow [2024-02-07 19:08:49,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 166 transitions, 1087 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:08:49,282 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 328 flow [2024-02-07 19:08:49,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=328, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2024-02-07 19:08:49,283 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 13 predicate places. [2024-02-07 19:08:49,283 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 328 flow [2024-02-07 19:08:49,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:49,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:49,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:49,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-07 19:08:49,496 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,SelfDestructingSolverStorable5 [2024-02-07 19:08:49,497 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 19:08:49,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:49,497 INFO L85 PathProgramCache]: Analyzing trace with hash 797931788, now seen corresponding path program 2 times [2024-02-07 19:08:49,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:49,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699252955] [2024-02-07 19:08:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:49,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:49,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:49,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699252955] [2024-02-07 19:08:49,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699252955] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:49,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:49,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:08:49,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847499427] [2024-02-07 19:08:49,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:49,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:49,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:49,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:49,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:49,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 19:08:49,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:49,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:49,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 19:08:49,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:52,992 INFO L124 PetriNetUnfolderBase]: 43205/51706 cut-off events. [2024-02-07 19:08:52,992 INFO L125 PetriNetUnfolderBase]: For 107216/107288 co-relation queries the response was YES. [2024-02-07 19:08:53,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201466 conditions, 51706 events. 43205/51706 cut-off events. For 107216/107288 co-relation queries the response was YES. Maximal size of possible extension queue 1794. Compared 219979 event pairs, 2866 based on Foata normal form. 664/52306 useless extension candidates. Maximal degree in co-relation 111442. Up to 22830 conditions per place. [2024-02-07 19:08:53,652 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 158 selfloop transitions, 12 changer transitions 0/177 dead transitions. [2024-02-07 19:08:53,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 177 transitions, 1222 flow [2024-02-07 19:08:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:08:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:08:53,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-02-07 19:08:53,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.690566037735849 [2024-02-07 19:08:53,669 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 328 flow. Second operand 5 states and 183 transitions. [2024-02-07 19:08:53,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 177 transitions, 1222 flow [2024-02-07 19:08:54,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 177 transitions, 1220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:08:54,171 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 389 flow [2024-02-07 19:08:54,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2024-02-07 19:08:54,171 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 17 predicate places. [2024-02-07 19:08:54,172 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 389 flow [2024-02-07 19:08:54,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:54,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:54,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:54,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:08:54,172 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 19:08:54,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:54,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2030853027, now seen corresponding path program 1 times [2024-02-07 19:08:54,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:54,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811680188] [2024-02-07 19:08:54,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:54,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:54,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:54,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811680188] [2024-02-07 19:08:54,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811680188] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:54,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:54,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:08:54,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374158607] [2024-02-07 19:08:54,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:54,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:54,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:54,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:54,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:54,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 19:08:54,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:54,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:54,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 19:08:54,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:57,808 INFO L124 PetriNetUnfolderBase]: 42713/51442 cut-off events. [2024-02-07 19:08:57,809 INFO L125 PetriNetUnfolderBase]: For 135650/135698 co-relation queries the response was YES. [2024-02-07 19:08:57,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211913 conditions, 51442 events. 42713/51442 cut-off events. For 135650/135698 co-relation queries the response was YES. Maximal size of possible extension queue 1806. Compared 220653 event pairs, 1884 based on Foata normal form. 504/51582 useless extension candidates. Maximal degree in co-relation 118132. Up to 22338 conditions per place. [2024-02-07 19:08:58,533 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 174 selfloop transitions, 11 changer transitions 0/192 dead transitions. [2024-02-07 19:08:58,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 192 transitions, 1453 flow [2024-02-07 19:08:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:08:58,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:08:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-02-07 19:08:58,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6754716981132075 [2024-02-07 19:08:58,534 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 389 flow. Second operand 5 states and 179 transitions. [2024-02-07 19:08:58,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 192 transitions, 1453 flow [2024-02-07 19:08:58,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 192 transitions, 1429 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-02-07 19:08:58,996 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 448 flow [2024-02-07 19:08:58,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=448, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-02-07 19:08:58,997 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 22 predicate places. [2024-02-07 19:08:58,997 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 448 flow [2024-02-07 19:08:58,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:58,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:58,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:58,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:08:58,998 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 19:08:58,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:58,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1702835069, now seen corresponding path program 1 times [2024-02-07 19:08:58,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:58,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853856857] [2024-02-07 19:08:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:58,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:59,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:59,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853856857] [2024-02-07 19:08:59,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853856857] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:59,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:59,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:08:59,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593195564] [2024-02-07 19:08:59,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:59,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:59,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:59,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:59,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:59,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 19:08:59,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:59,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:59,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 19:08:59,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:09:02,401 INFO L124 PetriNetUnfolderBase]: 42005/50506 cut-off events. [2024-02-07 19:09:02,401 INFO L125 PetriNetUnfolderBase]: For 145321/145393 co-relation queries the response was YES. [2024-02-07 19:09:02,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215341 conditions, 50506 events. 42005/50506 cut-off events. For 145321/145393 co-relation queries the response was YES. Maximal size of possible extension queue 1793. Compared 220421 event pairs, 2444 based on Foata normal form. 720/51174 useless extension candidates. Maximal degree in co-relation 123820. Up to 22811 conditions per place. [2024-02-07 19:09:02,835 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 177 selfloop transitions, 9 changer transitions 0/193 dead transitions. [2024-02-07 19:09:02,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 193 transitions, 1478 flow [2024-02-07 19:09:02,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:09:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:09:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-02-07 19:09:02,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6867924528301886 [2024-02-07 19:09:02,837 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 448 flow. Second operand 5 states and 182 transitions. [2024-02-07 19:09:02,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 193 transitions, 1478 flow [2024-02-07 19:09:03,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 193 transitions, 1441 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-02-07 19:09:03,295 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 451 flow [2024-02-07 19:09:03,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=451, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-02-07 19:09:03,296 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 26 predicate places. [2024-02-07 19:09:03,296 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 451 flow [2024-02-07 19:09:03,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:09:03,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:09:03,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:09:03,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:09:03,298 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 19:09:03,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:09:03,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1810557016, now seen corresponding path program 2 times [2024-02-07 19:09:03,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:09:03,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441516338] [2024-02-07 19:09:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:09:03,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:09:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:09:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:09:03,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:09:03,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441516338] [2024-02-07 19:09:03,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441516338] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:09:03,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:09:03,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:09:03,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995138332] [2024-02-07 19:09:03,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:09:03,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:09:03,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:09:03,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:09:03,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:09:03,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 19:09:03,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 451 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:09:03,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:09:03,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 19:09:03,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:09:06,408 INFO L124 PetriNetUnfolderBase]: 37497/45226 cut-off events. [2024-02-07 19:09:06,408 INFO L125 PetriNetUnfolderBase]: For 140843/140891 co-relation queries the response was YES. [2024-02-07 19:09:06,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196476 conditions, 45226 events. 37497/45226 cut-off events. For 140843/140891 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 190195 event pairs, 2388 based on Foata normal form. 496/45382 useless extension candidates. Maximal degree in co-relation 134552. Up to 19058 conditions per place. [2024-02-07 19:09:07,009 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 170 selfloop transitions, 10 changer transitions 0/187 dead transitions. [2024-02-07 19:09:07,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 187 transitions, 1466 flow [2024-02-07 19:09:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:09:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:09:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-02-07 19:09:07,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6716981132075471 [2024-02-07 19:09:07,017 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 451 flow. Second operand 5 states and 178 transitions. [2024-02-07 19:09:07,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 187 transitions, 1466 flow [2024-02-07 19:09:07,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 187 transitions, 1414 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-02-07 19:09:07,352 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 446 flow [2024-02-07 19:09:07,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-02-07 19:09:07,353 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 28 predicate places. [2024-02-07 19:09:07,353 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 446 flow [2024-02-07 19:09:07,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:09:07,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:09:07,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:09:07,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 19:09:07,354 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 19:09:07,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:09:07,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1459317947, now seen corresponding path program 2 times [2024-02-07 19:09:07,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:09:07,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567475189] [2024-02-07 19:09:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:09:07,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:09:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:09:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:09:07,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:09:07,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567475189] [2024-02-07 19:09:07,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567475189] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:09:07,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599749896] [2024-02-07 19:09:07,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 19:09:07,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:09:07,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:09:07,482 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) [2024-02-07 19:09:07,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-07 19:09:07,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 19:09:07,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:09:07,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-07 19:09:07,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:09:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:09:07,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:09:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:09:07,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599749896] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:09:07,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:09:07,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-02-07 19:09:07,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657043547] [2024-02-07 19:09:07,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:09:07,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:09:07,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:09:07,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:09:07,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:09:07,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 19:09:07,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:09:07,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:09:07,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 19:09:07,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:09:11,181 INFO L124 PetriNetUnfolderBase]: 36529/44402 cut-off events. [2024-02-07 19:09:11,181 INFO L125 PetriNetUnfolderBase]: For 128230/128278 co-relation queries the response was YES. [2024-02-07 19:09:11,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195649 conditions, 44402 events. 36529/44402 cut-off events. For 128230/128278 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 196744 event pairs, 6226 based on Foata normal form. 980/44898 useless extension candidates. Maximal degree in co-relation 126650. Up to 23229 conditions per place. [2024-02-07 19:09:11,537 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 165 selfloop transitions, 9 changer transitions 0/181 dead transitions. [2024-02-07 19:09:11,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 181 transitions, 1392 flow [2024-02-07 19:09:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:09:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:09:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-02-07 19:09:11,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2024-02-07 19:09:11,539 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 446 flow. Second operand 6 states and 189 transitions. [2024-02-07 19:09:11,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 181 transitions, 1392 flow [2024-02-07 19:09:11,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 181 transitions, 1379 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 19:09:11,804 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 485 flow [2024-02-07 19:09:11,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=485, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-02-07 19:09:11,805 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 33 predicate places. [2024-02-07 19:09:11,805 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 485 flow [2024-02-07 19:09:11,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:09:11,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:09:11,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:09:11,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-07 19:09:12,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:09:12,019 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 19:09:12,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:09:12,019 INFO L85 PathProgramCache]: Analyzing trace with hash 201465547, now seen corresponding path program 2 times [2024-02-07 19:09:12,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:09:12,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495836896] [2024-02-07 19:09:12,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:09:12,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:09:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:09:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:09:12,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:09:12,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495836896] [2024-02-07 19:09:12,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495836896] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:09:12,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939247241] [2024-02-07 19:09:12,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 19:09:12,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:09:12,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:09:12,095 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) [2024-02-07 19:09:12,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-07 19:09:12,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 19:09:12,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:09:12,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-07 19:09:12,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:09:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:09:12,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:09:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:09:12,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939247241] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:09:12,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:09:12,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-02-07 19:09:12,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897695318] [2024-02-07 19:09:12,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:09:12,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:09:12,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:09:12,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:09:12,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:09:12,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 19:09:12,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 485 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:09:12,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:09:12,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 19:09:12,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand