/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 03:45:26,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 03:45:26,849 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 03:45:26,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 03:45:26,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 03:45:26,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 03:45:26,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 03:45:26,896 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 03:45:26,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 03:45:26,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 03:45:26,897 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 03:45:26,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 03:45:26,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 03:45:26,898 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 03:45:26,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 03:45:26,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 03:45:26,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 03:45:26,899 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 03:45:26,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 03:45:26,900 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 03:45:26,900 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 03:45:26,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 03:45:26,906 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 03:45:26,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 03:45:26,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 03:45:26,910 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 03:45:26,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 03:45:26,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:45:26,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 03:45:26,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 03:45:26,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 03:45:26,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 03:45:26,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 03:45:26,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 03:45:26,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 03:45:26,911 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 03:45:27,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 03:45:27,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 03:45:27,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 03:45:27,198 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 03:45:27,199 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 03:45:27,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-08-25 03:45:28,210 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 03:45:28,399 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 03:45:28,400 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-08-25 03:45:28,414 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719f5c940/110e7273531847c0a26fd26410f28bee/FLAG34af0f7c7 [2023-08-25 03:45:28,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719f5c940/110e7273531847c0a26fd26410f28bee [2023-08-25 03:45:28,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 03:45:28,432 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 03:45:28,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 03:45:28,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 03:45:28,437 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 03:45:28,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:28,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ebc50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28, skipping insertion in model container [2023-08-25 03:45:28,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:28,480 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 03:45:28,796 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-25 03:45:28,796 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-25 03:45:28,799 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-25 03:45:28,802 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-25 03:45:28,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:45:28,836 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 03:45:28,860 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-25 03:45:28,861 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-25 03:45:28,890 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-25 03:45:28,891 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-25 03:45:28,891 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-25 03:45:28,892 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-25 03:45:28,900 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1071] [2023-08-25 03:45:28,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:45:28,975 INFO L206 MainTranslator]: Completed translation [2023-08-25 03:45:28,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28 WrapperNode [2023-08-25 03:45:28,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 03:45:28,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 03:45:28,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 03:45:28,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 03:45:28,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:28,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:29,028 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 262 [2023-08-25 03:45:29,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 03:45:29,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 03:45:29,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 03:45:29,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 03:45:29,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:29,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:29,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:29,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:29,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:29,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:29,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:29,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:29,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 03:45:29,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 03:45:29,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 03:45:29,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 03:45:29,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28" (1/1) ... [2023-08-25 03:45:29,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:45:29,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:45:29,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 03:45:29,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 03:45:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-25 03:45:29,117 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-25 03:45:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 03:45:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-25 03:45:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 03:45:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 03:45:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 03:45:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 03:45:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 03:45:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 03:45:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-25 03:45:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 03:45:29,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 03:45:29,118 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 03:45:29,254 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 03:45:29,256 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 03:45:29,631 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 03:45:29,636 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 03:45:29,637 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-25 03:45:29,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:45:29 BoogieIcfgContainer [2023-08-25 03:45:29,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 03:45:29,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 03:45:29,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 03:45:29,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 03:45:29,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 03:45:28" (1/3) ... [2023-08-25 03:45:29,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9b2b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:45:29, skipping insertion in model container [2023-08-25 03:45:29,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:45:28" (2/3) ... [2023-08-25 03:45:29,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9b2b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:45:29, skipping insertion in model container [2023-08-25 03:45:29,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:45:29" (3/3) ... [2023-08-25 03:45:29,643 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2023-08-25 03:45:29,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 03:45:29,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-25 03:45:29,653 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 03:45:29,738 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 03:45:29,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 356 transitions, 722 flow [2023-08-25 03:45:29,843 INFO L124 PetriNetUnfolderBase]: 17/354 cut-off events. [2023-08-25 03:45:29,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:45:29,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 354 events. 17/354 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 772 event pairs, 0 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 279. Up to 2 conditions per place. [2023-08-25 03:45:29,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 346 places, 356 transitions, 722 flow [2023-08-25 03:45:29,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 344 places, 354 transitions, 714 flow [2023-08-25 03:45:29,861 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:45:29,869 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 354 transitions, 714 flow [2023-08-25 03:45:29,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 354 transitions, 714 flow [2023-08-25 03:45:29,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 354 transitions, 714 flow [2023-08-25 03:45:29,927 INFO L124 PetriNetUnfolderBase]: 17/354 cut-off events. [2023-08-25 03:45:29,927 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:45:29,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 354 events. 17/354 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 774 event pairs, 0 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 279. Up to 2 conditions per place. [2023-08-25 03:45:29,933 INFO L119 LiptonReduction]: Number of co-enabled transitions 12194 [2023-08-25 03:46:33,884 WARN L234 SmtUtils]: Spent 18.04s on a formula simplification that was a NOOP. DAG size: 205 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 03:46:50,022 WARN L234 SmtUtils]: Spent 16.13s on a formula simplification that was a NOOP. DAG size: 193 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 03:47:09,798 WARN L234 SmtUtils]: Spent 19.77s on a formula simplification that was a NOOP. DAG size: 205 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 03:47:27,154 WARN L234 SmtUtils]: Spent 17.35s on a formula simplification that was a NOOP. DAG size: 193 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 03:49:55,178 WARN L234 SmtUtils]: Spent 2.30m on a formula simplification that was a NOOP. DAG size: 262 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 03:52:04,782 WARN L234 SmtUtils]: Spent 2.16m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 03:53:54,005 WARN L234 SmtUtils]: Spent 1.82m on a formula simplification that was a NOOP. DAG size: 262 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 03:56:00,979 WARN L234 SmtUtils]: Spent 2.12m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 03:56:00,987 INFO L134 LiptonReduction]: Checked pairs total: 46922 [2023-08-25 03:56:00,987 INFO L136 LiptonReduction]: Total number of compositions: 338 [2023-08-25 03:56:00,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:56:00,998 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=LoopsAndPotentialCycles, 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;@4d6ff255, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:56:00,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-25 03:56:00,999 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:56:00,999 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-25 03:56:00,999 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:56:00,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:56:01,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-25 03:56:01,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:56:01,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:56:01,003 INFO L85 PathProgramCache]: Analyzing trace with hash 35954, now seen corresponding path program 1 times [2023-08-25 03:56:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:56:01,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622230817] [2023-08-25 03:56:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:56:01,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:56:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:56:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:56:01,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:56:01,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622230817] [2023-08-25 03:56:01,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622230817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:56:01,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:56:01,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 03:56:01,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489451310] [2023-08-25 03:56:01,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:56:01,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 03:56:01,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:56:01,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 03:56:01,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 03:56:01,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 694 [2023-08-25 03:56:01,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 176 flow. Second operand has 2 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:01,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:56:01,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 694 [2023-08-25 03:56:01,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:56:02,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:02,642 INFO L124 PetriNetUnfolderBase]: 397/1263 cut-off events. [2023-08-25 03:56:02,643 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-25 03:56:02,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1929 conditions, 1263 events. 397/1263 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7808 event pairs, 307 based on Foata normal form. 0/1154 useless extension candidates. Maximal degree in co-relation 1911. Up to 641 conditions per place. [2023-08-25 03:56:02,648 INFO L140 encePairwiseOnDemand]: 682/694 looper letters, 32 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2023-08-25 03:56:02,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 216 flow [2023-08-25 03:56:02,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 03:56:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 03:56:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 732 transitions. [2023-08-25 03:56:02,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5273775216138329 [2023-08-25 03:56:02,659 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 732 transitions. [2023-08-25 03:56:02,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 732 transitions. [2023-08-25 03:56:02,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:56:02,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 732 transitions. [2023-08-25 03:56:02,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 366.0) internal successors, (732), 2 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:02,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 694.0) internal successors, (2082), 3 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:02,670 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 694.0) internal successors, (2082), 3 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:02,671 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 176 flow. Second operand 2 states and 732 transitions. [2023-08-25 03:56:02,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 216 flow [2023-08-25 03:56:02,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 03:56:02,674 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 150 flow [2023-08-25 03:56:02,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-08-25 03:56:02,677 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2023-08-25 03:56:02,677 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 150 flow [2023-08-25 03:56:02,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:02,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:56:02,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:56:02,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 03:56:02,678 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:56:02,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:56:02,679 INFO L85 PathProgramCache]: Analyzing trace with hash 867694808, now seen corresponding path program 1 times [2023-08-25 03:56:02,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:56:02,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021199261] [2023-08-25 03:56:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:56:02,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:56:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:56:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:56:02,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:56:02,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021199261] [2023-08-25 03:56:02,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021199261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:56:02,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:56:02,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:56:02,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972482421] [2023-08-25 03:56:02,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:56:02,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:56:02,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:56:02,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:56:02,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:56:02,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 694 [2023-08-25 03:56:02,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:02,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:56:02,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 694 [2023-08-25 03:56:02,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:56:04,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:05,532 INFO L124 PetriNetUnfolderBase]: 398/1266 cut-off events. [2023-08-25 03:56:05,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:56:05,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 1266 events. 398/1266 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7802 event pairs, 307 based on Foata normal form. 0/1156 useless extension candidates. Maximal degree in co-relation 1931. Up to 641 conditions per place. [2023-08-25 03:56:05,538 INFO L140 encePairwiseOnDemand]: 691/694 looper letters, 33 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-25 03:56:05,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 226 flow [2023-08-25 03:56:05,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:56:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:56:05,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1035 transitions. [2023-08-25 03:56:05,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49711815561959655 [2023-08-25 03:56:05,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1035 transitions. [2023-08-25 03:56:05,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1035 transitions. [2023-08-25 03:56:05,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:56:05,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1035 transitions. [2023-08-25 03:56:05,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:05,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 694.0) internal successors, (2776), 4 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:05,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 694.0) internal successors, (2776), 4 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:05,553 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 150 flow. Second operand 3 states and 1035 transitions. [2023-08-25 03:56:05,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 226 flow [2023-08-25 03:56:05,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:56:05,555 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 162 flow [2023-08-25 03:56:05,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2023-08-25 03:56:05,556 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2023-08-25 03:56:05,556 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 162 flow [2023-08-25 03:56:05,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:05,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:56:05,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:56:05,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 03:56:05,557 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:56:05,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:56:05,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1683234004, now seen corresponding path program 1 times [2023-08-25 03:56:05,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:56:05,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701278383] [2023-08-25 03:56:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:56:05,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:56:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:56:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:56:05,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:56:05,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701278383] [2023-08-25 03:56:05,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701278383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:56:05,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:56:05,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 03:56:05,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270860327] [2023-08-25 03:56:05,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:56:05,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:56:05,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:56:05,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:56:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:56:05,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 694 [2023-08-25 03:56:05,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:05,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:56:05,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 694 [2023-08-25 03:56:05,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:56:07,128 INFO L124 PetriNetUnfolderBase]: 398/1268 cut-off events. [2023-08-25 03:56:07,128 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:56:07,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 1268 events. 398/1268 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7791 event pairs, 307 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 1940. Up to 644 conditions per place. [2023-08-25 03:56:07,133 INFO L140 encePairwiseOnDemand]: 691/694 looper letters, 32 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-25 03:56:07,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 232 flow [2023-08-25 03:56:07,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:56:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:56:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1042 transitions. [2023-08-25 03:56:07,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004803073967339 [2023-08-25 03:56:07,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1042 transitions. [2023-08-25 03:56:07,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1042 transitions. [2023-08-25 03:56:07,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:56:07,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1042 transitions. [2023-08-25 03:56:07,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.3333333333333) internal successors, (1042), 3 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:07,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 694.0) internal successors, (2776), 4 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:07,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 694.0) internal successors, (2776), 4 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:07,141 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 162 flow. Second operand 3 states and 1042 transitions. [2023-08-25 03:56:07,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 232 flow [2023-08-25 03:56:07,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 03:56:07,142 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 174 flow [2023-08-25 03:56:07,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2023-08-25 03:56:07,143 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -8 predicate places. [2023-08-25 03:56:07,143 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 174 flow [2023-08-25 03:56:07,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:07,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:56:07,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:56:07,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 03:56:07,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:56:07,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:56:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1610773092, now seen corresponding path program 1 times [2023-08-25 03:56:07,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:56:07,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143073988] [2023-08-25 03:56:07,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:56:07,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:56:07,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-25 03:56:07,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819434140] [2023-08-25 03:56:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:56:07,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:56:07,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:56:07,198 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) [2023-08-25 03:56:07,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 03:56:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:56:07,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 03:56:07,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:56:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:56:07,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 03:56:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:56:07,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:56:07,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143073988] [2023-08-25 03:56:07,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 03:56:07,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819434140] [2023-08-25 03:56:07,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819434140] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 03:56:07,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-25 03:56:07,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-25 03:56:07,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883083468] [2023-08-25 03:56:07,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-25 03:56:07,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 03:56:07,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:56:07,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 03:56:07,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 03:56:07,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 694 [2023-08-25 03:56:07,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:07,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:56:07,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 694 [2023-08-25 03:56:07,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:56:09,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:11,606 INFO L124 PetriNetUnfolderBase]: 398/1274 cut-off events. [2023-08-25 03:56:11,607 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:56:11,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1973 conditions, 1274 events. 398/1274 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7795 event pairs, 307 based on Foata normal form. 6/1173 useless extension candidates. Maximal degree in co-relation 1967. Up to 644 conditions per place. [2023-08-25 03:56:11,611 INFO L140 encePairwiseOnDemand]: 691/694 looper letters, 32 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-08-25 03:56:11,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 260 flow [2023-08-25 03:56:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 03:56:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 03:56:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2055 transitions. [2023-08-25 03:56:11,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935158501440922 [2023-08-25 03:56:11,616 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2055 transitions. [2023-08-25 03:56:11,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2055 transitions. [2023-08-25 03:56:11,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:56:11,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2055 transitions. [2023-08-25 03:56:11,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 342.5) internal successors, (2055), 6 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:11,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:11,627 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:11,627 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 174 flow. Second operand 6 states and 2055 transitions. [2023-08-25 03:56:11,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 260 flow [2023-08-25 03:56:11,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 256 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 03:56:11,635 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 212 flow [2023-08-25 03:56:11,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2023-08-25 03:56:11,637 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-08-25 03:56:11,637 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 212 flow [2023-08-25 03:56:11,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:11,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:56:11,639 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:56:11,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 03:56:11,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:56:11,849 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:56:11,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:56:11,850 INFO L85 PathProgramCache]: Analyzing trace with hash -134545620, now seen corresponding path program 2 times [2023-08-25 03:56:11,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:56:11,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067048014] [2023-08-25 03:56:11,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:56:11,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:56:12,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-25 03:56:12,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183719385] [2023-08-25 03:56:12,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 03:56:12,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:56:12,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:56:12,006 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) [2023-08-25 03:56:12,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 03:56:12,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 03:56:12,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 03:56:12,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 03:56:12,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:56:12,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 03:56:12,496 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-25 03:56:12,513 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 03:56:12,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-25 03:56:12,535 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 03:56:12,535 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-25 03:56:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-25 03:56:12,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 03:56:12,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:56:12,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067048014] [2023-08-25 03:56:12,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 03:56:12,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183719385] [2023-08-25 03:56:12,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183719385] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:56:12,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:56:12,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 03:56:12,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171899152] [2023-08-25 03:56:12,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:56:12,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 03:56:12,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:56:12,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 03:56:12,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 03:56:12,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 694 [2023-08-25 03:56:12,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 202.33333333333334) internal successors, (1214), 6 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:12,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:56:12,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 694 [2023-08-25 03:56:12,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:56:14,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:16,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:18,049 INFO L124 PetriNetUnfolderBase]: 4278/7067 cut-off events. [2023-08-25 03:56:18,050 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-25 03:56:18,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14217 conditions, 7067 events. 4278/7067 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 36749 event pairs, 2140 based on Foata normal form. 0/6041 useless extension candidates. Maximal degree in co-relation 14208. Up to 4975 conditions per place. [2023-08-25 03:56:18,077 INFO L140 encePairwiseOnDemand]: 682/694 looper letters, 208 selfloop transitions, 23 changer transitions 0/232 dead transitions. [2023-08-25 03:56:18,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 232 transitions, 990 flow [2023-08-25 03:56:18,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 03:56:18,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 03:56:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1427 transitions. [2023-08-25 03:56:18,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34269932756964455 [2023-08-25 03:56:18,081 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1427 transitions. [2023-08-25 03:56:18,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1427 transitions. [2023-08-25 03:56:18,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:56:18,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1427 transitions. [2023-08-25 03:56:18,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.83333333333334) internal successors, (1427), 6 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:18,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:18,091 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:18,091 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 212 flow. Second operand 6 states and 1427 transitions. [2023-08-25 03:56:18,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 232 transitions, 990 flow [2023-08-25 03:56:18,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 232 transitions, 976 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-25 03:56:18,096 INFO L231 Difference]: Finished difference. Result has 94 places, 100 transitions, 356 flow [2023-08-25 03:56:18,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=94, PETRI_TRANSITIONS=100} [2023-08-25 03:56:18,098 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2023-08-25 03:56:18,098 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 100 transitions, 356 flow [2023-08-25 03:56:18,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.33333333333334) internal successors, (1214), 6 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:18,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:56:18,100 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:56:18,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-25 03:56:18,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:56:18,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:56:18,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:56:18,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1303402829, now seen corresponding path program 1 times [2023-08-25 03:56:18,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:56:18,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181940953] [2023-08-25 03:56:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:56:18,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:56:18,470 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-25 03:56:18,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380277668] [2023-08-25 03:56:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:56:18,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:56:18,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:56:18,477 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) [2023-08-25 03:56:18,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 03:56:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:56:19,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 3979 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 03:56:19,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:56:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:56:19,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 03:56:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:56:19,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:56:19,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181940953] [2023-08-25 03:56:19,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 03:56:19,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380277668] [2023-08-25 03:56:19,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380277668] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 03:56:19,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-25 03:56:19,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-25 03:56:19,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787777595] [2023-08-25 03:56:19,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-25 03:56:19,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 03:56:19,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:56:19,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 03:56:19,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-25 03:56:19,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 694 [2023-08-25 03:56:19,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 100 transitions, 356 flow. Second operand has 12 states, 12 states have (on average 337.6666666666667) internal successors, (4052), 12 states have internal predecessors, (4052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:19,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:56:19,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 694 [2023-08-25 03:56:19,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:56:21,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:26,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:28,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:30,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:31,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:31,950 INFO L124 PetriNetUnfolderBase]: 775/2284 cut-off events. [2023-08-25 03:56:31,950 INFO L125 PetriNetUnfolderBase]: For 349/381 co-relation queries the response was YES. [2023-08-25 03:56:31,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 2284 events. 775/2284 cut-off events. For 349/381 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 15710 event pairs, 504 based on Foata normal form. 20/2171 useless extension candidates. Maximal degree in co-relation 4100. Up to 1127 conditions per place. [2023-08-25 03:56:31,959 INFO L140 encePairwiseOnDemand]: 691/694 looper letters, 34 selfloop transitions, 11 changer transitions 0/106 dead transitions. [2023-08-25 03:56:31,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 106 transitions, 482 flow [2023-08-25 03:56:31,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 03:56:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 03:56:31,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4080 transitions. [2023-08-25 03:56:31,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899135446685879 [2023-08-25 03:56:31,966 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4080 transitions. [2023-08-25 03:56:31,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4080 transitions. [2023-08-25 03:56:31,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:56:31,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4080 transitions. [2023-08-25 03:56:31,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:31,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 694.0) internal successors, (9022), 13 states have internal predecessors, (9022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:31,983 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 694.0) internal successors, (9022), 13 states have internal predecessors, (9022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:31,983 INFO L175 Difference]: Start difference. First operand has 94 places, 100 transitions, 356 flow. Second operand 12 states and 4080 transitions. [2023-08-25 03:56:31,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 106 transitions, 482 flow [2023-08-25 03:56:31,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:56:31,988 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 452 flow [2023-08-25 03:56:31,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=452, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2023-08-25 03:56:31,990 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 25 predicate places. [2023-08-25 03:56:31,990 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 452 flow [2023-08-25 03:56:31,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 337.6666666666667) internal successors, (4052), 12 states have internal predecessors, (4052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:31,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:56:31,992 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:56:32,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 03:56:32,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:56:32,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:56:32,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:56:32,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1078300851, now seen corresponding path program 2 times [2023-08-25 03:56:32,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:56:32,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849904511] [2023-08-25 03:56:32,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:56:32,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:56:32,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-25 03:56:32,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194466301] [2023-08-25 03:56:32,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 03:56:32,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:56:32,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:56:32,571 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) [2023-08-25 03:56:32,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 03:56:33,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 03:56:33,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 03:56:33,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 03:56:33,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:56:33,936 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 03:56:33,948 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-25 03:56:33,971 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 03:56:33,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-25 03:56:34,004 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 03:56:34,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-25 03:56:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-25 03:56:34,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 03:56:34,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:56:34,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849904511] [2023-08-25 03:56:34,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 03:56:34,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194466301] [2023-08-25 03:56:34,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194466301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:56:34,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:56:34,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 03:56:34,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014128242] [2023-08-25 03:56:34,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:56:34,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 03:56:34,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:56:34,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 03:56:34,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 03:56:34,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 694 [2023-08-25 03:56:34,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 202.66666666666666) internal successors, (1216), 6 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:34,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:56:34,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 694 [2023-08-25 03:56:34,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:56:35,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:39,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:40,772 INFO L124 PetriNetUnfolderBase]: 6003/9860 cut-off events. [2023-08-25 03:56:40,772 INFO L125 PetriNetUnfolderBase]: For 2206/2206 co-relation queries the response was YES. [2023-08-25 03:56:40,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22241 conditions, 9860 events. 6003/9860 cut-off events. For 2206/2206 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 54837 event pairs, 2841 based on Foata normal form. 0/8732 useless extension candidates. Maximal degree in co-relation 22220. Up to 7028 conditions per place. [2023-08-25 03:56:40,827 INFO L140 encePairwiseOnDemand]: 682/694 looper letters, 244 selfloop transitions, 31 changer transitions 0/276 dead transitions. [2023-08-25 03:56:40,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 276 transitions, 1528 flow [2023-08-25 03:56:40,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 03:56:40,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 03:56:40,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1415 transitions. [2023-08-25 03:56:40,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3398174831892411 [2023-08-25 03:56:40,832 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1415 transitions. [2023-08-25 03:56:40,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1415 transitions. [2023-08-25 03:56:40,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:56:40,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1415 transitions. [2023-08-25 03:56:40,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 235.83333333333334) internal successors, (1415), 6 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:40,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:40,841 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:40,841 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 452 flow. Second operand 6 states and 1415 transitions. [2023-08-25 03:56:40,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 276 transitions, 1528 flow [2023-08-25 03:56:40,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 276 transitions, 1480 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-25 03:56:40,851 INFO L231 Difference]: Finished difference. Result has 116 places, 136 transitions, 662 flow [2023-08-25 03:56:40,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=662, PETRI_PLACES=116, PETRI_TRANSITIONS=136} [2023-08-25 03:56:40,853 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 30 predicate places. [2023-08-25 03:56:40,853 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 136 transitions, 662 flow [2023-08-25 03:56:40,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.66666666666666) internal successors, (1216), 6 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:40,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:56:40,854 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:56:40,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 03:56:41,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:56:41,066 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:56:41,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:56:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash -404407002, now seen corresponding path program 1 times [2023-08-25 03:56:41,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:56:41,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544511136] [2023-08-25 03:56:41,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:56:41,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:56:41,467 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-25 03:56:41,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158696395] [2023-08-25 03:56:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:56:41,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:56:41,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:56:41,469 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 03:56:41,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 03:56:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:56:44,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 9646 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 03:56:44,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:56:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:56:44,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 03:56:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:56:44,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:56:44,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544511136] [2023-08-25 03:56:44,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 03:56:44,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158696395] [2023-08-25 03:56:44,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158696395] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 03:56:44,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-25 03:56:44,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-25 03:56:44,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493835515] [2023-08-25 03:56:44,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-25 03:56:44,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 03:56:44,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:56:44,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 03:56:44,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-25 03:56:44,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 694 [2023-08-25 03:56:44,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 136 transitions, 662 flow. Second operand has 24 states, 24 states have (on average 337.3333333333333) internal successors, (8096), 24 states have internal predecessors, (8096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:56:44,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:56:44,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 694 [2023-08-25 03:56:44,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:56:45,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:47,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:53,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:55,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:56,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:56:58,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:00,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:01,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:03,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:07,266 INFO L124 PetriNetUnfolderBase]: 1243/3540 cut-off events. [2023-08-25 03:57:07,266 INFO L125 PetriNetUnfolderBase]: For 2273/2363 co-relation queries the response was YES. [2023-08-25 03:57:07,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7245 conditions, 3540 events. 1243/3540 cut-off events. For 2273/2363 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 26693 event pairs, 742 based on Foata normal form. 52/3471 useless extension candidates. Maximal degree in co-relation 7220. Up to 1741 conditions per place. [2023-08-25 03:57:07,279 INFO L140 encePairwiseOnDemand]: 691/694 looper letters, 36 selfloop transitions, 23 changer transitions 0/148 dead transitions. [2023-08-25 03:57:07,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 148 transitions, 852 flow [2023-08-25 03:57:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 03:57:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 03:57:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 8130 transitions. [2023-08-25 03:57:07,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4881123919308357 [2023-08-25 03:57:07,292 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 8130 transitions. [2023-08-25 03:57:07,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 8130 transitions. [2023-08-25 03:57:07,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:57:07,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 8130 transitions. [2023-08-25 03:57:07,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 338.75) internal successors, (8130), 24 states have internal predecessors, (8130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:07,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 694.0) internal successors, (17350), 25 states have internal predecessors, (17350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:07,319 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 694.0) internal successors, (17350), 25 states have internal predecessors, (17350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:07,319 INFO L175 Difference]: Start difference. First operand has 116 places, 136 transitions, 662 flow. Second operand 24 states and 8130 transitions. [2023-08-25 03:57:07,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 148 transitions, 852 flow [2023-08-25 03:57:07,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 148 transitions, 852 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:57:07,324 INFO L231 Difference]: Finished difference. Result has 151 places, 148 transitions, 854 flow [2023-08-25 03:57:07,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=854, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2023-08-25 03:57:07,325 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 65 predicate places. [2023-08-25 03:57:07,325 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 854 flow [2023-08-25 03:57:07,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 337.3333333333333) internal successors, (8096), 24 states have internal predecessors, (8096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:07,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:57:07,326 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:57:07,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 03:57:07,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:57:07,541 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:57:07,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:57:07,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1679781594, now seen corresponding path program 2 times [2023-08-25 03:57:07,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:57:07,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491177909] [2023-08-25 03:57:07,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:57:07,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:57:08,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-25 03:57:08,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276524179] [2023-08-25 03:57:08,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 03:57:08,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:57:08,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:57:08,266 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 03:57:08,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 03:57:11,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 03:57:11,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 03:57:11,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 03:57:11,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:57:11,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 03:57:11,148 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-25 03:57:11,161 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 03:57:11,161 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-08-25 03:57:11,179 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 03:57:11,179 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-08-25 03:57:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-25 03:57:11,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 03:57:11,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:57:11,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491177909] [2023-08-25 03:57:11,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 03:57:11,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276524179] [2023-08-25 03:57:11,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276524179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:57:11,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:57:11,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 03:57:11,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717563114] [2023-08-25 03:57:11,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:57:11,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 03:57:11,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:57:11,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 03:57:11,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 03:57:11,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 694 [2023-08-25 03:57:11,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 854 flow. Second operand has 6 states, 6 states have (on average 219.33333333333334) internal successors, (1316), 6 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:11,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:57:11,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 694 [2023-08-25 03:57:11,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:57:12,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:14,951 INFO L124 PetriNetUnfolderBase]: 6691/10972 cut-off events. [2023-08-25 03:57:14,951 INFO L125 PetriNetUnfolderBase]: For 5288/5288 co-relation queries the response was YES. [2023-08-25 03:57:14,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27328 conditions, 10972 events. 6691/10972 cut-off events. For 5288/5288 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 61474 event pairs, 3394 based on Foata normal form. 0/10136 useless extension candidates. Maximal degree in co-relation 27290. Up to 8281 conditions per place. [2023-08-25 03:57:14,992 INFO L140 encePairwiseOnDemand]: 683/694 looper letters, 287 selfloop transitions, 55 changer transitions 0/342 dead transitions. [2023-08-25 03:57:14,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 342 transitions, 2274 flow [2023-08-25 03:57:14,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 03:57:14,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 03:57:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1516 transitions. [2023-08-25 03:57:14,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36407300672430354 [2023-08-25 03:57:14,995 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1516 transitions. [2023-08-25 03:57:14,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1516 transitions. [2023-08-25 03:57:14,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:57:14,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1516 transitions. [2023-08-25 03:57:14,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:15,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:15,001 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:15,001 INFO L175 Difference]: Start difference. First operand has 151 places, 148 transitions, 854 flow. Second operand 6 states and 1516 transitions. [2023-08-25 03:57:15,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 342 transitions, 2274 flow [2023-08-25 03:57:15,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 342 transitions, 2178 flow, removed 37 selfloop flow, removed 11 redundant places. [2023-08-25 03:57:15,013 INFO L231 Difference]: Finished difference. Result has 150 places, 197 transitions, 1312 flow [2023-08-25 03:57:15,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1312, PETRI_PLACES=150, PETRI_TRANSITIONS=197} [2023-08-25 03:57:15,013 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 64 predicate places. [2023-08-25 03:57:15,013 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 197 transitions, 1312 flow [2023-08-25 03:57:15,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.33333333333334) internal successors, (1316), 6 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:15,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:57:15,014 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:57:15,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 03:57:15,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:57:15,228 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:57:15,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:57:15,228 INFO L85 PathProgramCache]: Analyzing trace with hash -883879008, now seen corresponding path program 1 times [2023-08-25 03:57:15,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:57:15,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315280424] [2023-08-25 03:57:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:57:15,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:57:15,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-25 03:57:15,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968089660] [2023-08-25 03:57:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:57:15,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:57:15,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:57:15,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 03:57:15,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 03:57:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:57:21,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 20988 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 03:57:21,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:57:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:57:22,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 03:57:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:57:22,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:57:22,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315280424] [2023-08-25 03:57:22,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 03:57:22,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968089660] [2023-08-25 03:57:22,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968089660] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 03:57:22,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-25 03:57:22,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-25 03:57:22,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766683496] [2023-08-25 03:57:22,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-25 03:57:22,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 03:57:22,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:57:22,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 03:57:22,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-25 03:57:22,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 694 [2023-08-25 03:57:22,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 197 transitions, 1312 flow. Second operand has 32 states, 32 states have (on average 337.34375) internal successors, (10795), 32 states have internal predecessors, (10795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:22,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:57:22,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 694 [2023-08-25 03:57:22,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:57:25,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:27,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:30,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:31,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:34,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:35,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:37,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:38,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:41,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:42,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:44,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:49,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:57:50,801 INFO L124 PetriNetUnfolderBase]: 1569/4312 cut-off events. [2023-08-25 03:57:50,801 INFO L125 PetriNetUnfolderBase]: For 7273/7405 co-relation queries the response was YES. [2023-08-25 03:57:50,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10310 conditions, 4312 events. 1569/4312 cut-off events. For 7273/7405 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 32686 event pairs, 862 based on Foata normal form. 60/4237 useless extension candidates. Maximal degree in co-relation 10268. Up to 2091 conditions per place. [2023-08-25 03:57:50,820 INFO L140 encePairwiseOnDemand]: 691/694 looper letters, 37 selfloop transitions, 31 changer transitions 0/205 dead transitions. [2023-08-25 03:57:50,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 205 transitions, 1496 flow [2023-08-25 03:57:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 03:57:50,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 03:57:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 10822 transitions. [2023-08-25 03:57:50,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48730187319884727 [2023-08-25 03:57:50,834 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 10822 transitions. [2023-08-25 03:57:50,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 10822 transitions. [2023-08-25 03:57:50,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:57:50,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 10822 transitions. [2023-08-25 03:57:50,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 338.1875) internal successors, (10822), 32 states have internal predecessors, (10822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:50,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 694.0) internal successors, (22902), 33 states have internal predecessors, (22902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:50,868 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 694.0) internal successors, (22902), 33 states have internal predecessors, (22902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:50,868 INFO L175 Difference]: Start difference. First operand has 150 places, 197 transitions, 1312 flow. Second operand 32 states and 10822 transitions. [2023-08-25 03:57:50,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 205 transitions, 1496 flow [2023-08-25 03:57:50,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 205 transitions, 1496 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:57:50,880 INFO L231 Difference]: Finished difference. Result has 189 places, 205 transitions, 1472 flow [2023-08-25 03:57:50,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1472, PETRI_PLACES=189, PETRI_TRANSITIONS=205} [2023-08-25 03:57:50,880 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 103 predicate places. [2023-08-25 03:57:50,880 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 205 transitions, 1472 flow [2023-08-25 03:57:50,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 337.34375) internal successors, (10795), 32 states have internal predecessors, (10795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:50,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:57:50,882 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:57:50,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 03:57:51,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:57:51,105 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:57:51,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:57:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1496364128, now seen corresponding path program 2 times [2023-08-25 03:57:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:57:51,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108707356] [2023-08-25 03:57:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:57:51,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:57:52,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-25 03:57:52,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408999398] [2023-08-25 03:57:52,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 03:57:52,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:57:52,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:57:52,139 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 03:57:52,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 03:57:57,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 03:57:57,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 03:57:57,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 03:57:57,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:57:57,304 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 03:57:57,312 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-25 03:57:57,327 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 03:57:57,327 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-08-25 03:57:57,357 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 03:57:57,357 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-08-25 03:57:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2023-08-25 03:57:57,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 03:57:57,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:57:57,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108707356] [2023-08-25 03:57:57,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 03:57:57,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408999398] [2023-08-25 03:57:57,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408999398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:57:57,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:57:57,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 03:57:57,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523053241] [2023-08-25 03:57:57,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:57:57,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 03:57:57,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:57:57,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 03:57:57,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 03:57:57,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 694 [2023-08-25 03:57:57,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 205 transitions, 1472 flow. Second operand has 6 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:57:57,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:57:57,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 694 [2023-08-25 03:57:57,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:00,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:58:01,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:58:03,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:58:04,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:58:06,361 INFO L124 PetriNetUnfolderBase]: 7020/11577 cut-off events. [2023-08-25 03:58:06,361 INFO L125 PetriNetUnfolderBase]: For 10458/10458 co-relation queries the response was YES. [2023-08-25 03:58:06,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32159 conditions, 11577 events. 7020/11577 cut-off events. For 10458/10458 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 65856 event pairs, 3355 based on Foata normal form. 0/10917 useless extension candidates. Maximal degree in co-relation 32108. Up to 8672 conditions per place. [2023-08-25 03:58:06,421 INFO L140 encePairwiseOnDemand]: 683/694 looper letters, 339 selfloop transitions, 79 changer transitions 0/419 dead transitions. [2023-08-25 03:58:06,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 419 transitions, 3392 flow [2023-08-25 03:58:06,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 03:58:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 03:58:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1503 transitions. [2023-08-25 03:58:06,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36095100864553314 [2023-08-25 03:58:06,424 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1503 transitions. [2023-08-25 03:58:06,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1503 transitions. [2023-08-25 03:58:06,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:06,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1503 transitions. [2023-08-25 03:58:06,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.5) internal successors, (1503), 6 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:06,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:06,430 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:06,430 INFO L175 Difference]: Start difference. First operand has 189 places, 205 transitions, 1472 flow. Second operand 6 states and 1503 transitions. [2023-08-25 03:58:06,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 419 transitions, 3392 flow [2023-08-25 03:58:06,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 419 transitions, 3296 flow, removed 25 selfloop flow, removed 23 redundant places. [2023-08-25 03:58:06,455 INFO L231 Difference]: Finished difference. Result has 176 places, 270 transitions, 2274 flow [2023-08-25 03:58:06,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2274, PETRI_PLACES=176, PETRI_TRANSITIONS=270} [2023-08-25 03:58:06,456 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 90 predicate places. [2023-08-25 03:58:06,456 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 270 transitions, 2274 flow [2023-08-25 03:58:06,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:06,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:06,456 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:58:06,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 03:58:06,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-25 03:58:06,673 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:58:06,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:06,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1713099943, now seen corresponding path program 1 times [2023-08-25 03:58:06,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:06,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165371721] [2023-08-25 03:58:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:06,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:07,746 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-25 03:58:07,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142741366] [2023-08-25 03:58:07,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:07,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:58:07,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:58:07,747 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 03:58:07,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 03:58:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:17,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 28544 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 03:58:17,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:58:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-25 03:58:17,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 03:58:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-25 03:58:17,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:17,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165371721] [2023-08-25 03:58:17,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 03:58:17,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142741366] [2023-08-25 03:58:17,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142741366] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 03:58:17,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-25 03:58:17,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-25 03:58:17,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111086176] [2023-08-25 03:58:17,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-25 03:58:17,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 03:58:17,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:17,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 03:58:17,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 03:58:17,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 694 [2023-08-25 03:58:17,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 270 transitions, 2274 flow. Second operand has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:17,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:17,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 694 [2023-08-25 03:58:17,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:19,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:58:21,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:58:23,220 INFO L124 PetriNetUnfolderBase]: 1929/5095 cut-off events. [2023-08-25 03:58:23,220 INFO L125 PetriNetUnfolderBase]: For 9039/9203 co-relation queries the response was YES. [2023-08-25 03:58:23,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14440 conditions, 5095 events. 1929/5095 cut-off events. For 9039/9203 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 37889 event pairs, 974 based on Foata normal form. 55/4999 useless extension candidates. Maximal degree in co-relation 14385. Up to 2411 conditions per place. [2023-08-25 03:58:23,252 INFO L140 encePairwiseOnDemand]: 690/694 looper letters, 162 selfloop transitions, 6 changer transitions 0/369 dead transitions. [2023-08-25 03:58:23,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 369 transitions, 3133 flow [2023-08-25 03:58:23,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 03:58:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 03:58:23,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2043 transitions. [2023-08-25 03:58:23,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49063400576368876 [2023-08-25 03:58:23,254 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2043 transitions. [2023-08-25 03:58:23,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2043 transitions. [2023-08-25 03:58:23,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:23,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2043 transitions. [2023-08-25 03:58:23,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 340.5) internal successors, (2043), 6 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:23,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:23,259 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:23,259 INFO L175 Difference]: Start difference. First operand has 176 places, 270 transitions, 2274 flow. Second operand 6 states and 2043 transitions. [2023-08-25 03:58:23,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 369 transitions, 3133 flow [2023-08-25 03:58:23,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 369 transitions, 3133 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:58:23,285 INFO L231 Difference]: Finished difference. Result has 185 places, 273 transitions, 2437 flow [2023-08-25 03:58:23,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2437, PETRI_PLACES=185, PETRI_TRANSITIONS=273} [2023-08-25 03:58:23,285 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 99 predicate places. [2023-08-25 03:58:23,285 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 273 transitions, 2437 flow [2023-08-25 03:58:23,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:23,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:23,286 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:58:23,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-25 03:58:23,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:58:23,501 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:58:23,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:23,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1304517035, now seen corresponding path program 2 times [2023-08-25 03:58:23,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:23,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534234882] [2023-08-25 03:58:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:23,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:27,891 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-25 03:58:27,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001507454] [2023-08-25 03:58:27,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 03:58:27,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:58:27,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:58:27,893 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 03:58:27,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 03:58:42,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 03:58:42,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 03:58:42,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 03:58:42,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:58:42,322 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 03:58:42,328 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-25 03:58:42,339 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 03:58:42,339 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-08-25 03:58:42,356 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 03:58:42,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-08-25 03:58:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7636 trivial. 0 not checked. [2023-08-25 03:58:42,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 03:58:42,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:42,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534234882] [2023-08-25 03:58:42,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 03:58:42,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001507454] [2023-08-25 03:58:42,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001507454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:58:42,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:58:42,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 03:58:42,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492604523] [2023-08-25 03:58:42,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:58:42,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 03:58:42,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:42,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 03:58:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 03:58:42,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 694 [2023-08-25 03:58:42,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 273 transitions, 2437 flow. Second operand has 6 states, 6 states have (on average 218.33333333333334) internal successors, (1310), 6 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:42,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:42,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 694 [2023-08-25 03:58:42,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:44,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:58:47,784 INFO L124 PetriNetUnfolderBase]: 7582/12512 cut-off events. [2023-08-25 03:58:47,784 INFO L125 PetriNetUnfolderBase]: For 17289/17289 co-relation queries the response was YES. [2023-08-25 03:58:47,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38240 conditions, 12512 events. 7582/12512 cut-off events. For 17289/17289 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 71130 event pairs, 4611 based on Foata normal form. 0/11898 useless extension candidates. Maximal degree in co-relation 38181. Up to 11725 conditions per place. [2023-08-25 03:58:47,841 INFO L140 encePairwiseOnDemand]: 672/694 looper letters, 314 selfloop transitions, 117 changer transitions 0/431 dead transitions. [2023-08-25 03:58:47,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 431 transitions, 3943 flow [2023-08-25 03:58:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 03:58:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 03:58:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1502 transitions. [2023-08-25 03:58:47,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3607108549471662 [2023-08-25 03:58:47,844 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1502 transitions. [2023-08-25 03:58:47,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1502 transitions. [2023-08-25 03:58:47,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:47,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1502 transitions. [2023-08-25 03:58:47,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:47,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:47,848 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 694.0) internal successors, (4858), 7 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:47,848 INFO L175 Difference]: Start difference. First operand has 185 places, 273 transitions, 2437 flow. Second operand 6 states and 1502 transitions. [2023-08-25 03:58:47,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 431 transitions, 3943 flow [2023-08-25 03:58:47,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 431 transitions, 3935 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-25 03:58:47,881 INFO L231 Difference]: Finished difference. Result has 193 places, 351 transitions, 3249 flow [2023-08-25 03:58:47,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=694, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3249, PETRI_PLACES=193, PETRI_TRANSITIONS=351} [2023-08-25 03:58:47,882 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 107 predicate places. [2023-08-25 03:58:47,882 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 351 transitions, 3249 flow [2023-08-25 03:58:47,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 218.33333333333334) internal successors, (1310), 6 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:47,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:47,882 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:58:47,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 03:58:48,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-25 03:58:48,084 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 03:58:48,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:48,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1206423651, now seen corresponding path program 1 times [2023-08-25 03:58:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:48,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753917774] [2023-08-25 03:58:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:48,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:52,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-25 03:58:52,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636165267] [2023-08-25 03:58:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:52,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:58:52,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:58:52,574 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 03:58:52,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 03:59:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:30,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 113608 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 03:59:30,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:59:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-25 03:59:30,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 03:59:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-25 03:59:30,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:30,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753917774] [2023-08-25 03:59:30,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 03:59:30,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636165267] [2023-08-25 03:59:30,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636165267] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 03:59:30,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-25 03:59:30,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-25 03:59:30,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739072587] [2023-08-25 03:59:30,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-25 03:59:30,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 03:59:30,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:30,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 03:59:30,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-25 03:59:30,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 694 [2023-08-25 03:59:30,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 351 transitions, 3249 flow. Second operand has 12 states, 12 states have (on average 336.1666666666667) internal successors, (4034), 12 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:30,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:30,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 694 [2023-08-25 03:59:30,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:32,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:59:33,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:59:35,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:59:36,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:59:37,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-25 03:59:39,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] Received shutdown request... [2023-08-25 03:59:40,040 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 03:59:40,040 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 03:59:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 03:59:40,248 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONDATA_RACE (25 of 26 remaining) [2023-08-25 03:59:40,448 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forcibly destroying the process [2023-08-25 03:59:40,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 137 [2023-08-25 03:59:40,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-25 03:59:40,493 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). [2023-08-25 03:59:40,494 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2023-08-25 03:59:40,494 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2023-08-25 03:59:40,494 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2023-08-25 03:59:40,494 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2023-08-25 03:59:40,494 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2023-08-25 03:59:40,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2023-08-25 03:59:40,496 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2023-08-25 03:59:40,496 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2023-08-25 03:59:40,496 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2023-08-25 03:59:40,496 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2023-08-25 03:59:40,496 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2023-08-25 03:59:40,496 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-08-25 03:59:40,499 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 03:59:40,499 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 03:59:40,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 03:59:40 BasicIcfg [2023-08-25 03:59:40,501 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 03:59:40,502 INFO L158 Benchmark]: Toolchain (without parser) took 852069.52ms. Allocated memory was 381.7MB in the beginning and 6.2GB in the end (delta: 5.9GB). Free memory was 339.4MB in the beginning and 4.4GB in the end (delta: -4.0GB). Peak memory consumption was 2.1GB. Max. memory is 16.0GB. [2023-08-25 03:59:40,502 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 381.7MB. Free memory is still 359.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 03:59:40,502 INFO L158 Benchmark]: CACSL2BoogieTranslator took 540.78ms. Allocated memory is still 381.7MB. Free memory was 339.4MB in the beginning and 352.4MB in the end (delta: -13.0MB). Peak memory consumption was 34.7MB. Max. memory is 16.0GB. [2023-08-25 03:59:40,502 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.69ms. Allocated memory is still 381.7MB. Free memory was 352.4MB in the beginning and 348.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-25 03:59:40,502 INFO L158 Benchmark]: Boogie Preprocessor took 29.75ms. Allocated memory is still 381.7MB. Free memory was 348.2MB in the beginning and 344.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-25 03:59:40,502 INFO L158 Benchmark]: RCFGBuilder took 578.52ms. Allocated memory is still 381.7MB. Free memory was 344.6MB in the beginning and 311.8MB in the end (delta: 32.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-08-25 03:59:40,502 INFO L158 Benchmark]: TraceAbstraction took 850861.98ms. Allocated memory was 381.7MB in the beginning and 6.2GB in the end (delta: 5.9GB). Free memory was 311.1MB in the beginning and 4.4GB in the end (delta: -4.1GB). Peak memory consumption was 2.1GB. Max. memory is 16.0GB. [2023-08-25 03:59:40,503 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 381.7MB. Free memory is still 359.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 540.78ms. Allocated memory is still 381.7MB. Free memory was 339.4MB in the beginning and 352.4MB in the end (delta: -13.0MB). Peak memory consumption was 34.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.69ms. Allocated memory is still 381.7MB. Free memory was 352.4MB in the beginning and 348.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.75ms. Allocated memory is still 381.7MB. Free memory was 348.2MB in the beginning and 344.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 578.52ms. Allocated memory is still 381.7MB. Free memory was 344.6MB in the beginning and 311.8MB in the end (delta: 32.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * TraceAbstraction took 850861.98ms. Allocated memory was 381.7MB in the beginning and 6.2GB in the end (delta: 5.9GB). Free memory was 311.1MB in the beginning and 4.4GB in the end (delta: -4.1GB). Peak memory consumption was 2.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 1071]: Unsoundness Warning unspecified type, defaulting to int C: long [1071] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 631.1s, 344 PlacesBefore, 86 PlacesAfterwards, 354 TransitionsBefore, 85 TransitionsAfterwards, 12194 CoEnabledTransitionPairs, 8 FixpointIterations, 224 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 15 ConcurrentYvCompositions, 11 ChoiceCompositions, 338 TotalNumberOfCompositions, 46922 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14670, independent: 13709, independent conditional: 0, independent unconditional: 13709, dependent: 961, dependent conditional: 0, dependent unconditional: 961, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6036, independent: 5883, independent conditional: 0, independent unconditional: 5883, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14670, independent: 7826, independent conditional: 0, independent unconditional: 7826, dependent: 808, dependent conditional: 0, dependent unconditional: 808, unknown: 6036, unknown conditional: 0, unknown unconditional: 6036] , Statistics on independence cache: Total cache size (in pairs): 554, Positive cache size: 453, Positive conditional cache size: 0, Positive unconditional cache size: 453, Negative cache size: 101, Negative conditional cache size: 0, Negative unconditional cache size: 101, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1047]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1044]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1047]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1048]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1006]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1007]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1026]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1033]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1011]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1006]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1007]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1016]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1017]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1018]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1019]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1020]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1069]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - TimeoutResultAtElement [Line: 1070]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 333/694 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1133 conditions, 267 events (8/266 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 8 event pairs, 0 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1069. Up to 33 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 405 locations, 26 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 850.7s, OverallIterations: 14, TraceHistogramMax: 120, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 118.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 631.2s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 382 SdHoareTripleChecker+Valid, 108.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 382 mSDsluCounter, 171 SdHoareTripleChecker+Invalid, 107.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 212 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3372 IncrementalHoareTripleChecker+Invalid, 3590 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 212 mSolverCounterUnsat, 171 mSDtfsCounter, 3372 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 900 GetRequests, 782 SyntacticMatches, 16 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3249occurred in iteration=13, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.7s SsaConstructionTime, 24.8s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 624 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 917 ConstructedInterpolants, 0 QuantifiedInterpolants, 2206 SizeOfPredicates, 2 NumberOfNonLiveVariables, 178709 ConjunctsInSsa, 139 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 13082/25274 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown