/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.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 18:27:23,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 18:27:23,091 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 18:27:23,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 18:27:23,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 18:27:23,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 18:27:23,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 18:27:23,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 18:27:23,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 18:27:23,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 18:27:23,134 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 18:27:23,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 18:27:23,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 18:27:23,135 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 18:27:23,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 18:27:23,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 18:27:23,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 18:27:23,136 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 18:27:23,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 18:27:23,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 18:27:23,137 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 18:27:23,138 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 18:27:23,138 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 18:27:23,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 18:27:23,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 18:27:23,139 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 18:27:23,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 18:27:23,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 18:27:23,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 18:27:23,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 18:27:23,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 18:27:23,141 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 18:27:23,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 18:27:23,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 18:27:23,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 18:27:23,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 18:27:23,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 18:27:23,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 18:27:23,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 18:27:23,482 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 18:27:23,482 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 18:27:23,484 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-08-25 18:27:24,593 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 18:27:24,920 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 18:27:24,920 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-08-25 18:27:24,943 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edea03bea/730bc71bccf543a9a730d4dfb6c67cf3/FLAGa8571ac5c [2023-08-25 18:27:24,959 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edea03bea/730bc71bccf543a9a730d4dfb6c67cf3 [2023-08-25 18:27:24,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 18:27:24,964 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 18:27:24,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 18:27:24,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 18:27:24,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 18:27:24,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:27:24" (1/1) ... [2023-08-25 18:27:24,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c34cd95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:24, skipping insertion in model container [2023-08-25 18:27:24,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:27:24" (1/1) ... [2023-08-25 18:27:25,036 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 18:27:25,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 18:27:25,459 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 18:27:25,473 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-25 18:27:25,475 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-25 18:27:25,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 18:27:25,567 INFO L206 MainTranslator]: Completed translation [2023-08-25 18:27:25,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25 WrapperNode [2023-08-25 18:27:25,567 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 18:27:25,568 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 18:27:25,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 18:27:25,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 18:27:25,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25" (1/1) ... [2023-08-25 18:27:25,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25" (1/1) ... [2023-08-25 18:27:25,644 INFO L138 Inliner]: procedures = 279, calls = 87, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 534 [2023-08-25 18:27:25,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 18:27:25,645 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 18:27:25,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 18:27:25,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 18:27:25,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25" (1/1) ... [2023-08-25 18:27:25,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25" (1/1) ... [2023-08-25 18:27:25,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25" (1/1) ... [2023-08-25 18:27:25,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25" (1/1) ... [2023-08-25 18:27:25,688 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25" (1/1) ... [2023-08-25 18:27:25,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25" (1/1) ... [2023-08-25 18:27:25,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25" (1/1) ... [2023-08-25 18:27:25,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25" (1/1) ... [2023-08-25 18:27:25,712 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 18:27:25,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 18:27:25,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 18:27:25,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 18:27:25,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25" (1/1) ... [2023-08-25 18:27:25,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 18:27:25,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 18:27:25,770 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 18:27:25,798 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 18:27:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 18:27:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-25 18:27:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-25 18:27:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-25 18:27:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 18:27:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 18:27:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-25 18:27:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-25 18:27:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 18:27:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 18:27:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 18:27:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 18:27:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-25 18:27:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-25 18:27:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-25 18:27:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 18:27:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 18:27:25,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 18:27:25,826 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 18:27:26,024 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 18:27:26,025 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 18:27:26,763 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 18:27:26,778 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 18:27:26,778 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-25 18:27:26,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:27:26 BoogieIcfgContainer [2023-08-25 18:27:26,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 18:27:26,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 18:27:26,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 18:27:26,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 18:27:26,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:27:24" (1/3) ... [2023-08-25 18:27:26,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a874e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:27:26, skipping insertion in model container [2023-08-25 18:27:26,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:27:25" (2/3) ... [2023-08-25 18:27:26,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a874e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:27:26, skipping insertion in model container [2023-08-25 18:27:26,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:27:26" (3/3) ... [2023-08-25 18:27:26,790 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2023-08-25 18:27:26,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 18:27:26,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-08-25 18:27:26,808 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 18:27:27,006 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-25 18:27:27,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 536 places, 577 transitions, 1196 flow [2023-08-25 18:27:27,661 INFO L124 PetriNetUnfolderBase]: 171/1668 cut-off events. [2023-08-25 18:27:27,661 INFO L125 PetriNetUnfolderBase]: For 36/62 co-relation queries the response was YES. [2023-08-25 18:27:27,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 1668 events. 171/1668 cut-off events. For 36/62 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 12132 event pairs, 0 based on Foata normal form. 0/1393 useless extension candidates. Maximal degree in co-relation 855. Up to 16 conditions per place. [2023-08-25 18:27:27,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 536 places, 577 transitions, 1196 flow [2023-08-25 18:27:27,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 528 places, 569 transitions, 1180 flow [2023-08-25 18:27:27,733 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:27:27,749 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 528 places, 569 transitions, 1180 flow [2023-08-25 18:27:27,753 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 528 places, 569 transitions, 1180 flow [2023-08-25 18:27:27,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 528 places, 569 transitions, 1180 flow [2023-08-25 18:27:28,206 INFO L124 PetriNetUnfolderBase]: 171/1660 cut-off events. [2023-08-25 18:27:28,207 INFO L125 PetriNetUnfolderBase]: For 36/62 co-relation queries the response was YES. [2023-08-25 18:27:28,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 1660 events. 171/1660 cut-off events. For 36/62 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 12147 event pairs, 0 based on Foata normal form. 0/1393 useless extension candidates. Maximal degree in co-relation 847. Up to 16 conditions per place. [2023-08-25 18:27:28,383 INFO L119 LiptonReduction]: Number of co-enabled transitions 146418 [2023-08-25 18:28:11,603 WARN L234 SmtUtils]: Spent 14.86s on a formula simplification. DAG size of input: 301 DAG size of output: 299 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:28:25,069 WARN L234 SmtUtils]: Spent 13.46s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:28:49,385 WARN L234 SmtUtils]: Spent 24.31s on a formula simplification. DAG size of input: 301 DAG size of output: 299 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:28:52,434 INFO L134 LiptonReduction]: Checked pairs total: 846395 [2023-08-25 18:28:52,434 INFO L136 LiptonReduction]: Total number of compositions: 363 [2023-08-25 18:28:52,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:28:52,450 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;@5323a5b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:28:52,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-25 18:28:52,457 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:28:52,457 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2023-08-25 18:28:52,457 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 18:28:52,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:28:52,458 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 18:28:52,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-25 18:28:52,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:28:52,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1585148062, now seen corresponding path program 1 times [2023-08-25 18:28:52,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:28:52,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575556174] [2023-08-25 18:28:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:28:52,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:28:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:28:52,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:28:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:28:52,789 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:28:52,791 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:28:52,792 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-25 18:28:52,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-25 18:28:52,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-25 18:28:52,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 18:28:52,795 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:28:52,800 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-25 18:28:52,801 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:28:52,801 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 18:28:52,943 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-25 18:28:52,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 870 places, 947 transitions, 1984 flow [2023-08-25 18:28:57,069 INFO L124 PetriNetUnfolderBase]: 1156/8284 cut-off events. [2023-08-25 18:28:57,070 INFO L125 PetriNetUnfolderBase]: For 602/807 co-relation queries the response was YES. [2023-08-25 18:28:57,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8958 conditions, 8284 events. 1156/8284 cut-off events. For 602/807 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 84879 event pairs, 22 based on Foata normal form. 0/6942 useless extension candidates. Maximal degree in co-relation 5083. Up to 192 conditions per place. [2023-08-25 18:28:57,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 870 places, 947 transitions, 1984 flow [2023-08-25 18:28:57,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 862 places, 939 transitions, 1968 flow [2023-08-25 18:28:57,498 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:28:57,498 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 862 places, 939 transitions, 1968 flow [2023-08-25 18:28:57,498 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 862 places, 939 transitions, 1968 flow [2023-08-25 18:28:57,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 862 places, 939 transitions, 1968 flow [2023-08-25 18:29:01,091 INFO L124 PetriNetUnfolderBase]: 1156/8276 cut-off events. [2023-08-25 18:29:01,091 INFO L125 PetriNetUnfolderBase]: For 602/807 co-relation queries the response was YES. [2023-08-25 18:29:01,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8950 conditions, 8276 events. 1156/8276 cut-off events. For 602/807 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 84733 event pairs, 22 based on Foata normal form. 0/6942 useless extension candidates. Maximal degree in co-relation 5075. Up to 192 conditions per place. [2023-08-25 18:29:02,357 INFO L119 LiptonReduction]: Number of co-enabled transitions 563940 [2023-08-25 18:29:26,110 WARN L234 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 135 DAG size of output: 133 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:29:43,475 WARN L234 SmtUtils]: Spent 11.87s on a formula simplification. DAG size of input: 226 DAG size of output: 220 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:29:51,288 WARN L234 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 226 DAG size of output: 220 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:30:05,657 WARN L234 SmtUtils]: Spent 12.81s on a formula simplification. DAG size of input: 287 DAG size of output: 285 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:30:11,659 WARN L234 SmtUtils]: Spent 6.00s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:30:39,455 WARN L234 SmtUtils]: Spent 27.79s on a formula simplification. DAG size of input: 287 DAG size of output: 285 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:30:52,412 WARN L234 SmtUtils]: Spent 12.95s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:30:52,435 INFO L134 LiptonReduction]: Checked pairs total: 3135928 [2023-08-25 18:30:52,435 INFO L136 LiptonReduction]: Total number of compositions: 558 [2023-08-25 18:30:52,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:30:52,438 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;@5323a5b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:30:52,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-25 18:30:52,449 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:30:52,450 INFO L124 PetriNetUnfolderBase]: 4/162 cut-off events. [2023-08-25 18:30:52,450 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 18:30:52,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:30:52,450 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 18:30:52,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-25 18:30:52,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:30:52,451 INFO L85 PathProgramCache]: Analyzing trace with hash -495584663, now seen corresponding path program 1 times [2023-08-25 18:30:52,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:30:52,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890130911] [2023-08-25 18:30:52,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:30:52,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:30:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:30:52,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:30:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:30:52,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:30:52,522 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:30:52,522 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-25 18:30:52,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-25 18:30:52,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-25 18:30:52,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 18:30:52,523 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:30:52,523 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-25 18:30:52,523 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:30:52,523 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 18:30:52,666 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-08-25 18:30:52,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1204 places, 1317 transitions, 2778 flow [2023-08-25 18:31:26,035 INFO L124 PetriNetUnfolderBase]: 9047/45458 cut-off events. [2023-08-25 18:31:26,036 INFO L125 PetriNetUnfolderBase]: For 7059/7679 co-relation queries the response was YES. [2023-08-25 18:31:31,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52632 conditions, 45458 events. 9047/45458 cut-off events. For 7059/7679 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 569887 event pairs, 1024 based on Foata normal form. 0/39004 useless extension candidates. Maximal degree in co-relation 28073. Up to 2304 conditions per place. [2023-08-25 18:31:31,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 1204 places, 1317 transitions, 2778 flow [2023-08-25 18:31:33,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1196 places, 1309 transitions, 2762 flow [2023-08-25 18:31:33,163 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:31:33,163 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1196 places, 1309 transitions, 2762 flow [2023-08-25 18:31:33,163 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1196 places, 1309 transitions, 2762 flow [2023-08-25 18:31:33,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1196 places, 1309 transitions, 2762 flow [2023-08-25 18:32:06,700 INFO L124 PetriNetUnfolderBase]: 9047/45450 cut-off events. [2023-08-25 18:32:06,700 INFO L125 PetriNetUnfolderBase]: For 7059/7679 co-relation queries the response was YES. [2023-08-25 18:32:10,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52624 conditions, 45450 events. 9047/45450 cut-off events. For 7059/7679 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 569634 event pairs, 1024 based on Foata normal form. 0/39004 useless extension candidates. Maximal degree in co-relation 28065. Up to 2304 conditions per place. [2023-08-25 18:32:18,870 INFO L119 LiptonReduction]: Number of co-enabled transitions 1252566 [2023-08-25 18:33:22,977 WARN L234 SmtUtils]: Spent 27.55s on a formula simplification. DAG size of input: 300 DAG size of output: 298 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:33:28,411 WARN L234 SmtUtils]: Spent 5.43s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:33:52,166 WARN L234 SmtUtils]: Spent 23.75s on a formula simplification. DAG size of input: 300 DAG size of output: 298 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:34:03,157 WARN L234 SmtUtils]: Spent 10.99s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:34:03,185 INFO L134 LiptonReduction]: Checked pairs total: 7785139 [2023-08-25 18:34:03,185 INFO L136 LiptonReduction]: Total number of compositions: 766 [2023-08-25 18:34:03,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:34:03,189 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;@5323a5b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:34:03,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-25 18:34:03,224 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:34:03,224 INFO L124 PetriNetUnfolderBase]: 23/465 cut-off events. [2023-08-25 18:34:03,224 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-25 18:34:03,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:34:03,225 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-25 18:34:03,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-25 18:34:03,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:34:03,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1520350794, now seen corresponding path program 1 times [2023-08-25 18:34:03,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:34:03,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106219258] [2023-08-25 18:34:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:34:03,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:34:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:34:03,262 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:34:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:34:03,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:34:03,290 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:34:03,291 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-25 18:34:03,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-25 18:34:03,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-25 18:34:03,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 18:34:03,291 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:34:03,292 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-25 18:34:03,292 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:34:03,292 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-25 18:34:03,441 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-08-25 18:34:03,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1538 places, 1687 transitions, 3578 flow