/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 --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 16:07:18,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 16:07:18,692 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 [2023-08-26 16:07:18,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 16:07:18,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 16:07:18,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 16:07:18,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 16:07:18,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 16:07:18,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 16:07:18,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 16:07:18,723 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 16:07:18,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 16:07:18,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 16:07:18,724 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 16:07:18,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 16:07:18,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 16:07:18,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 16:07:18,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 16:07:18,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 16:07:18,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 16:07:18,725 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 16:07:18,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 16:07:18,726 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 16:07:18,726 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 16:07:18,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 16:07:18,727 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 16:07:18,727 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 16:07:18,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 16:07:18,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 16:07:18,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 16:07:18,728 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 16:07:18,728 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 16:07:18,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 16:07:18,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 16:07:18,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 16:07:18,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 16:07:18,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 16:07:18,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 16:07:18,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 16:07:18,995 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 16:07:18,995 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 16:07:18,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-26 16:07:19,928 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 16:07:20,125 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 16:07:20,126 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-26 16:07:20,145 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a2420220/dbe4db7e76094cefb615be6ca03d494c/FLAG700a2c86b [2023-08-26 16:07:20,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a2420220/dbe4db7e76094cefb615be6ca03d494c [2023-08-26 16:07:20,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 16:07:20,159 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 16:07:20,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 16:07:20,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 16:07:20,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 16:07:20,162 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e35a360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20, skipping insertion in model container [2023-08-26 16:07:20,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,210 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 16:07:20,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 16:07:20,617 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 16:07:20,638 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 16:07:20,639 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 16:07:20,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 16:07:20,698 INFO L206 MainTranslator]: Completed translation [2023-08-26 16:07:20,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20 WrapperNode [2023-08-26 16:07:20,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 16:07:20,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 16:07:20,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 16:07:20,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 16:07:20,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,735 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2023-08-26 16:07:20,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 16:07:20,736 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 16:07:20,736 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 16:07:20,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 16:07:20,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 16:07:20,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 16:07:20,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 16:07:20,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 16:07:20,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20" (1/1) ... [2023-08-26 16:07:20,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 16:07:20,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 16:07:20,805 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) [2023-08-26 16:07:20,824 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 [2023-08-26 16:07:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 16:07:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-26 16:07:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-26 16:07:20,834 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-26 16:07:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 16:07:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 16:07:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-26 16:07:20,834 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-26 16:07:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 16:07:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 16:07:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 16:07:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 16:07:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 16:07:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 16:07:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 16:07:20,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 16:07:20,837 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 16:07:20,994 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 16:07:20,996 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 16:07:21,387 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 16:07:21,397 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 16:07:21,397 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-26 16:07:21,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:07:21 BoogieIcfgContainer [2023-08-26 16:07:21,399 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 16:07:21,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 16:07:21,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 16:07:21,403 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 16:07:21,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 04:07:20" (1/3) ... [2023-08-26 16:07:21,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bf4e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:07:21, skipping insertion in model container [2023-08-26 16:07:21,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:07:20" (2/3) ... [2023-08-26 16:07:21,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bf4e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:07:21, skipping insertion in model container [2023-08-26 16:07:21,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:07:21" (3/3) ... [2023-08-26 16:07:21,405 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-08-26 16:07:21,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 16:07:21,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-08-26 16:07:21,419 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 16:07:21,509 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 16:07:21,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 284 transitions, 590 flow [2023-08-26 16:07:21,638 INFO L124 PetriNetUnfolderBase]: 56/536 cut-off events. [2023-08-26 16:07:21,638 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-26 16:07:21,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 536 events. 56/536 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2454 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 263. Up to 8 conditions per place. [2023-08-26 16:07:21,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 284 transitions, 590 flow [2023-08-26 16:07:21,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 274 transitions, 564 flow [2023-08-26 16:07:21,650 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 16:07:21,656 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 274 transitions, 564 flow [2023-08-26 16:07:21,657 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 274 transitions, 564 flow [2023-08-26 16:07:21,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 274 transitions, 564 flow [2023-08-26 16:07:21,709 INFO L124 PetriNetUnfolderBase]: 52/514 cut-off events. [2023-08-26 16:07:21,710 INFO L125 PetriNetUnfolderBase]: For 4/8 co-relation queries the response was YES. [2023-08-26 16:07:21,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 514 events. 52/514 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2283 event pairs, 0 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 251. Up to 8 conditions per place. [2023-08-26 16:07:21,724 INFO L119 LiptonReduction]: Number of co-enabled transitions 25432 [2023-08-26 16:07:27,967 INFO L134 LiptonReduction]: Checked pairs total: 54353 [2023-08-26 16:07:27,967 INFO L136 LiptonReduction]: Total number of compositions: 234 [2023-08-26 16:07:27,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 16:07:27,980 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;@5c38f02f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 16:07:27,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-26 16:07:27,985 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 16:07:27,985 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2023-08-26 16:07:27,985 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 16:07:27,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:07:27,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-26 16:07:27,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 16:07:27,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:07:27,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1150051034, now seen corresponding path program 1 times [2023-08-26 16:07:28,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:07:28,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773734159] [2023-08-26 16:07:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:07:28,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:07:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:07:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:07:28,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:07:28,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773734159] [2023-08-26 16:07:28,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773734159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:07:28,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:07:28,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 16:07:28,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811745674] [2023-08-26 16:07:28,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:07:28,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 16:07:28,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:07:28,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 16:07:28,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 16:07:28,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 518 [2023-08-26 16:07:28,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 101 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:28,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:07:28,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 518 [2023-08-26 16:07:28,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:07:29,618 INFO L124 PetriNetUnfolderBase]: 12723/22159 cut-off events. [2023-08-26 16:07:29,619 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-08-26 16:07:29,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41828 conditions, 22159 events. 12723/22159 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 173103 event pairs, 12206 based on Foata normal form. 863/11362 useless extension candidates. Maximal degree in co-relation 39447. Up to 19564 conditions per place. [2023-08-26 16:07:29,716 INFO L140 encePairwiseOnDemand]: 503/518 looper letters, 55 selfloop transitions, 2 changer transitions 13/90 dead transitions. [2023-08-26 16:07:29,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 336 flow [2023-08-26 16:07:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 16:07:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 16:07:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2023-08-26 16:07:29,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341055341055341 [2023-08-26 16:07:29,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2023-08-26 16:07:29,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2023-08-26 16:07:29,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:07:29,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2023-08-26 16:07:29,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:29,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 518.0) internal successors, (2072), 4 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:29,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 518.0) internal successors, (2072), 4 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:29,757 INFO L175 Difference]: Start difference. First operand has 89 places, 101 transitions, 218 flow. Second operand 3 states and 830 transitions. [2023-08-26 16:07:29,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 336 flow [2023-08-26 16:07:29,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 16:07:29,773 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 174 flow [2023-08-26 16:07:29,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2023-08-26 16:07:29,777 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 3 predicate places. [2023-08-26 16:07:29,777 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 174 flow [2023-08-26 16:07:29,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:29,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:07:29,777 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-26 16:07:29,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 16:07:29,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 16:07:29,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:07:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1241210104, now seen corresponding path program 1 times [2023-08-26 16:07:29,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:07:29,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622971854] [2023-08-26 16:07:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:07:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:07:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:07:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:07:29,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:07:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622971854] [2023-08-26 16:07:29,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622971854] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 16:07:29,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704721999] [2023-08-26 16:07:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:07:29,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 16:07:29,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 16:07:29,895 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) [2023-08-26 16:07:29,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 16:07:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:07:30,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 16:07:30,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 16:07:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:07:30,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 16:07:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:07:30,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704721999] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 16:07:30,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 16:07:30,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-26 16:07:30,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88539253] [2023-08-26 16:07:30,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 16:07:30,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 16:07:30,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:07:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 16:07:30,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 16:07:30,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 518 [2023-08-26 16:07:30,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 174 flow. Second operand has 6 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) [2023-08-26 16:07:30,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:07:30,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 518 [2023-08-26 16:07:30,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:07:30,669 INFO L124 PetriNetUnfolderBase]: 4787/8571 cut-off events. [2023-08-26 16:07:30,670 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-26 16:07:30,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16145 conditions, 8571 events. 4787/8571 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 59097 event pairs, 4606 based on Foata normal form. 0/4176 useless extension candidates. Maximal degree in co-relation 16132. Up to 7518 conditions per place. [2023-08-26 16:07:30,691 INFO L140 encePairwiseOnDemand]: 515/518 looper letters, 55 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2023-08-26 16:07:30,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 306 flow [2023-08-26 16:07:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 16:07:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 16:07:30,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1557 transitions. [2023-08-26 16:07:30,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.500965250965251 [2023-08-26 16:07:30,695 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1557 transitions. [2023-08-26 16:07:30,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1557 transitions. [2023-08-26 16:07:30,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:07:30,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1557 transitions. [2023-08-26 16:07:30,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:30,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 518.0) internal successors, (3626), 7 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:30,704 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 518.0) internal successors, (3626), 7 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:30,704 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 174 flow. Second operand 6 states and 1557 transitions. [2023-08-26 16:07:30,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 306 flow [2023-08-26 16:07:30,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 302 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 16:07:30,706 INFO L231 Difference]: Finished difference. Result has 88 places, 80 transitions, 206 flow [2023-08-26 16:07:30,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2023-08-26 16:07:30,707 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -1 predicate places. [2023-08-26 16:07:30,707 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 206 flow [2023-08-26 16:07:30,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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) [2023-08-26 16:07:30,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:07:30,708 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-26 16:07:30,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 16:07:30,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 16:07:30,913 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 16:07:30,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:07:30,913 INFO L85 PathProgramCache]: Analyzing trace with hash -11664986, now seen corresponding path program 2 times [2023-08-26 16:07:30,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:07:30,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915172651] [2023-08-26 16:07:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:07:30,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:07:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:07:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:07:31,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:07:31,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915172651] [2023-08-26 16:07:31,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915172651] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 16:07:31,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737937844] [2023-08-26 16:07:31,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 16:07:31,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 16:07:31,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 16:07:31,061 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) [2023-08-26 16:07:31,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 16:07:31,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 16:07:31,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 16:07:31,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 16:07:31,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 16:07:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:07:31,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 16:07:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:07:31,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737937844] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 16:07:31,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 16:07:31,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-26 16:07:31,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617742603] [2023-08-26 16:07:31,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 16:07:31,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 16:07:31,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:07:31,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 16:07:31,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-26 16:07:31,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 518 [2023-08-26 16:07:31,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 206 flow. Second operand has 12 states, 12 states have (on average 250.25) internal successors, (3003), 12 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:31,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:07:31,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 518 [2023-08-26 16:07:31,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:07:31,822 INFO L124 PetriNetUnfolderBase]: 4787/8577 cut-off events. [2023-08-26 16:07:31,822 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-26 16:07:31,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16182 conditions, 8577 events. 4787/8577 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 59068 event pairs, 4606 based on Foata normal form. 6/4189 useless extension candidates. Maximal degree in co-relation 16123. Up to 7518 conditions per place. [2023-08-26 16:07:31,843 INFO L140 encePairwiseOnDemand]: 515/518 looper letters, 55 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2023-08-26 16:07:31,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 86 transitions, 374 flow [2023-08-26 16:07:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 16:07:31,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 16:07:31,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3060 transitions. [2023-08-26 16:07:31,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4922779922779923 [2023-08-26 16:07:31,849 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3060 transitions. [2023-08-26 16:07:31,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3060 transitions. [2023-08-26 16:07:31,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:07:31,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3060 transitions. [2023-08-26 16:07:31,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:31,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 518.0) internal successors, (6734), 13 states have internal predecessors, (6734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:31,864 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 518.0) internal successors, (6734), 13 states have internal predecessors, (6734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:31,864 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 206 flow. Second operand 12 states and 3060 transitions. [2023-08-26 16:07:31,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 86 transitions, 374 flow [2023-08-26 16:07:31,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 86 transitions, 360 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 16:07:31,866 INFO L231 Difference]: Finished difference. Result has 104 places, 86 transitions, 276 flow [2023-08-26 16:07:31,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=276, PETRI_PLACES=104, PETRI_TRANSITIONS=86} [2023-08-26 16:07:31,866 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 15 predicate places. [2023-08-26 16:07:31,866 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 86 transitions, 276 flow [2023-08-26 16:07:31,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 250.25) internal successors, (3003), 12 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:07:31,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:07:31,868 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-26 16:07:31,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 16:07:32,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-26 16:07:32,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 16:07:32,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:07:32,073 INFO L85 PathProgramCache]: Analyzing trace with hash 500949094, now seen corresponding path program 3 times [2023-08-26 16:07:32,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:07:32,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274814228] [2023-08-26 16:07:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:07:32,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:07:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:07:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:07:32,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:07:32,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274814228] [2023-08-26 16:07:32,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274814228] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 16:07:32,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111773411] [2023-08-26 16:07:32,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 16:07:32,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 16:07:32,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 16:07:32,400 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) [2023-08-26 16:07:32,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 16:09:16,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-26 16:09:16,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 16:09:16,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-26 16:09:16,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 16:09:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:09:16,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 16:09:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:09:16,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111773411] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 16:09:16,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 16:09:16,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-26 16:09:16,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915026519] [2023-08-26 16:09:16,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 16:09:16,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 16:09:16,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:09:16,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 16:09:16,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-26 16:09:16,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 518 [2023-08-26 16:09:16,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 86 transitions, 276 flow. Second operand has 25 states, 25 states have (on average 250.16) internal successors, (6254), 25 states have internal predecessors, (6254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:09:16,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:09:16,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 518 [2023-08-26 16:09:16,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:09:17,017 INFO L124 PetriNetUnfolderBase]: 4787/8589 cut-off events. [2023-08-26 16:09:17,018 INFO L125 PetriNetUnfolderBase]: For 474/474 co-relation queries the response was YES. [2023-08-26 16:09:17,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16266 conditions, 8589 events. 4787/8589 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 59093 event pairs, 4606 based on Foata normal form. 12/4207 useless extension candidates. Maximal degree in co-relation 16129. Up to 7518 conditions per place. [2023-08-26 16:09:17,038 INFO L140 encePairwiseOnDemand]: 515/518 looper letters, 55 selfloop transitions, 23 changer transitions 0/98 dead transitions. [2023-08-26 16:09:17,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 98 transitions, 528 flow [2023-08-26 16:09:17,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-26 16:09:17,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-26 16:09:17,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6066 transitions. [2023-08-26 16:09:17,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48793436293436293 [2023-08-26 16:09:17,048 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6066 transitions. [2023-08-26 16:09:17,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6066 transitions. [2023-08-26 16:09:17,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:09:17,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6066 transitions. [2023-08-26 16:09:17,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 252.75) internal successors, (6066), 24 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:09:17,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 518.0) internal successors, (12950), 25 states have internal predecessors, (12950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:09:17,072 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 518.0) internal successors, (12950), 25 states have internal predecessors, (12950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:09:17,072 INFO L175 Difference]: Start difference. First operand has 104 places, 86 transitions, 276 flow. Second operand 24 states and 6066 transitions. [2023-08-26 16:09:17,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 98 transitions, 528 flow [2023-08-26 16:09:17,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 98 transitions, 456 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-26 16:09:17,077 INFO L231 Difference]: Finished difference. Result has 134 places, 98 transitions, 396 flow [2023-08-26 16:09:17,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=396, PETRI_PLACES=134, PETRI_TRANSITIONS=98} [2023-08-26 16:09:17,079 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 45 predicate places. [2023-08-26 16:09:17,079 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 98 transitions, 396 flow [2023-08-26 16:09:17,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 250.16) internal successors, (6254), 25 states have internal predecessors, (6254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:09:17,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:09:17,090 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-08-26 16:09:17,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 16:09:17,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 16:09:17,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 16:09:17,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:09:17,301 INFO L85 PathProgramCache]: Analyzing trace with hash -408064538, now seen corresponding path program 4 times [2023-08-26 16:09:17,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:09:17,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943685958] [2023-08-26 16:09:17,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:09:17,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:09:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:09:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:09:18,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:09:18,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943685958] [2023-08-26 16:09:18,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943685958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 16:09:18,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025778543] [2023-08-26 16:09:18,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 16:09:18,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 16:09:18,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 16:09:18,181 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) [2023-08-26 16:09:18,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 16:09:18,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 16:09:18,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 16:09:18,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-26 16:09:18,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 16:09:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:09:18,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 16:09:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:09:19,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025778543] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 16:09:19,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 16:09:19,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-08-26 16:09:19,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547774930] [2023-08-26 16:09:19,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 16:09:19,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-26 16:09:19,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:09:19,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-26 16:09:19,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-08-26 16:09:19,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 518 [2023-08-26 16:09:19,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 98 transitions, 396 flow. Second operand has 48 states, 48 states have (on average 250.0625) internal successors, (12003), 48 states have internal predecessors, (12003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:09:19,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:09:19,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 518 [2023-08-26 16:09:19,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:09:20,073 INFO L124 PetriNetUnfolderBase]: 4787/8613 cut-off events. [2023-08-26 16:09:20,073 INFO L125 PetriNetUnfolderBase]: For 5244/5244 co-relation queries the response was YES. [2023-08-26 16:09:20,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16410 conditions, 8613 events. 4787/8613 cut-off events. For 5244/5244 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 59114 event pairs, 4606 based on Foata normal form. 24/4243 useless extension candidates. Maximal degree in co-relation 16141. Up to 7518 conditions per place. [2023-08-26 16:09:20,098 INFO L140 encePairwiseOnDemand]: 515/518 looper letters, 55 selfloop transitions, 47 changer transitions 0/122 dead transitions. [2023-08-26 16:09:20,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 122 transitions, 792 flow [2023-08-26 16:09:20,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-26 16:09:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-26 16:09:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 12078 transitions. [2023-08-26 16:09:20,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857625482625483 [2023-08-26 16:09:20,115 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 12078 transitions. [2023-08-26 16:09:20,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 12078 transitions. [2023-08-26 16:09:20,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:09:20,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 12078 transitions. [2023-08-26 16:09:20,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 251.625) internal successors, (12078), 48 states have internal predecessors, (12078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:09:20,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 518.0) internal successors, (25382), 49 states have internal predecessors, (25382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:09:20,154 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 518.0) internal successors, (25382), 49 states have internal predecessors, (25382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:09:20,155 INFO L175 Difference]: Start difference. First operand has 134 places, 98 transitions, 396 flow. Second operand 48 states and 12078 transitions. [2023-08-26 16:09:20,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 122 transitions, 792 flow [2023-08-26 16:09:20,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 122 transitions, 648 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-08-26 16:09:20,159 INFO L231 Difference]: Finished difference. Result has 194 places, 122 transitions, 636 flow [2023-08-26 16:09:20,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=636, PETRI_PLACES=194, PETRI_TRANSITIONS=122} [2023-08-26 16:09:20,160 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 105 predicate places. [2023-08-26 16:09:20,160 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 122 transitions, 636 flow [2023-08-26 16:09:20,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 250.0625) internal successors, (12003), 48 states have internal predecessors, (12003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:09:20,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:09:20,162 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-08-26 16:09:20,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 16:09:20,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 16:09:20,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 16:09:20,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:09:20,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1165478118, now seen corresponding path program 5 times [2023-08-26 16:09:20,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:09:20,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529269243] [2023-08-26 16:09:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:09:20,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:09:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:09:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 16:09:23,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:09:23,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529269243] [2023-08-26 16:09:23,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529269243] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 16:09:23,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598188250] [2023-08-26 16:09:23,085 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 16:09:23,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 16:09:23,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 16:09:23,087 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) [2023-08-26 16:09:23,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-08-26 16:22:01,472 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 16:22:01,473 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 [2023-08-26 16:22:02,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-26 16:22:02,673 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-26 16:22:02,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-26 16:22:02,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 16:22:02,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-26 16:22:02,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-08-26 16:22:02,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160406375] [2023-08-26 16:22:02,705 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-26 16:22:02,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-26 16:22:02,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:22:02,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-26 16:22:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-26 16:22:02,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 518 [2023-08-26 16:22:02,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 122 transitions, 636 flow. Second operand has 49 states, 49 states have (on average 250.0408163265306) internal successors, (12252), 49 states have internal predecessors, (12252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 16:22:02,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:22:02,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 518 [2023-08-26 16:22:02,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:22:02,717 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-26 16:22:02,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 16:22:02,717 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-26 16:22:02,718 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-26 16:22:02,719 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-08-26 16:22:02,720 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT (1/2) [2023-08-26 16:22:02,721 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 16:22:02,721 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 16:22:02,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 04:22:02 BasicIcfg [2023-08-26 16:22:02,722 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 16:22:02,723 INFO L158 Benchmark]: Toolchain (without parser) took 882564.06ms. Allocated memory was 369.1MB in the beginning and 943.7MB in the end (delta: 574.6MB). Free memory was 343.5MB in the beginning and 547.7MB in the end (delta: -204.2MB). Peak memory consumption was 371.1MB. Max. memory is 16.0GB. [2023-08-26 16:22:02,723 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 369.1MB. Free memory was 345.7MB in the beginning and 345.7MB in the end (delta: 88.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 16:22:02,723 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.72ms. Allocated memory is still 369.1MB. Free memory was 343.5MB in the beginning and 306.5MB in the end (delta: 37.0MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-08-26 16:22:02,723 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.69ms. Allocated memory is still 369.1MB. Free memory was 306.5MB in the beginning and 303.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 16:22:02,723 INFO L158 Benchmark]: Boogie Preprocessor took 22.88ms. Allocated memory is still 369.1MB. Free memory was 303.3MB in the beginning and 300.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 16:22:02,724 INFO L158 Benchmark]: RCFGBuilder took 639.87ms. Allocated memory is still 369.1MB. Free memory was 300.9MB in the beginning and 320.4MB in the end (delta: -19.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-26 16:22:02,724 INFO L158 Benchmark]: TraceAbstraction took 881321.76ms. Allocated memory was 369.1MB in the beginning and 943.7MB in the end (delta: 574.6MB). Free memory was 319.6MB in the beginning and 547.7MB in the end (delta: -228.0MB). Peak memory consumption was 348.2MB. Max. memory is 16.0GB. [2023-08-26 16:22:02,725 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 369.1MB. Free memory was 345.7MB in the beginning and 345.7MB in the end (delta: 88.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 539.72ms. Allocated memory is still 369.1MB. Free memory was 343.5MB in the beginning and 306.5MB in the end (delta: 37.0MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.69ms. Allocated memory is still 369.1MB. Free memory was 306.5MB in the beginning and 303.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.88ms. Allocated memory is still 369.1MB. Free memory was 303.3MB in the beginning and 300.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 639.87ms. Allocated memory is still 369.1MB. Free memory was 300.9MB in the beginning and 320.4MB in the end (delta: -19.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 881321.76ms. Allocated memory was 369.1MB in the beginning and 943.7MB in the end (delta: 574.6MB). Free memory was 319.6MB in the beginning and 547.7MB in the end (delta: -228.0MB). Peak memory consumption was 348.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3s, 255 PlacesBefore, 89 PlacesAfterwards, 274 TransitionsBefore, 101 TransitionsAfterwards, 25432 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 162 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 18 ConcurrentYvCompositions, 7 ChoiceCompositions, 234 TotalNumberOfCompositions, 54353 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25405, independent: 24846, independent conditional: 0, independent unconditional: 24846, dependent: 559, dependent conditional: 0, dependent unconditional: 559, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12449, independent: 12297, independent conditional: 0, independent unconditional: 12297, dependent: 152, dependent conditional: 0, dependent unconditional: 152, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25405, independent: 12549, independent conditional: 0, independent unconditional: 12549, dependent: 407, dependent conditional: 0, dependent unconditional: 407, unknown: 12449, unknown conditional: 0, unknown unconditional: 12449] , Statistics on independence cache: Total cache size (in pairs): 1299, Positive cache size: 1235, Positive conditional cache size: 0, Positive unconditional cache size: 1235, Negative cache size: 64, Negative conditional cache size: 0, Negative unconditional cache size: 64, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1050]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1051]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 404 locations, 74 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: 881.2s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1199 IncrementalHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 1199 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=636occurred in iteration=5, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 104.1s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3141 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 14 InterpolantComputations, 1 PerfectInterpolantSequences, 28/2066 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