/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_83-list2_racing1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 18:24:36,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 18:24:36,501 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 18:24:36,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 18:24:36,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 18:24:36,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 18:24:36,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 18:24:36,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 18:24:36,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 18:24:36,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 18:24:36,549 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 18:24:36,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 18:24:36,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 18:24:36,550 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 18:24:36,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 18:24:36,551 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 18:24:36,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 18:24:36,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 18:24:36,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 18:24:36,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 18:24:36,552 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 18:24:36,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 18:24:36,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 18:24:36,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 18:24:36,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 18:24:36,554 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 18:24:36,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 18:24:36,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 18:24:36,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 18:24:36,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 18:24:36,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 18:24:36,556 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 18:24:36,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 18:24:36,556 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 18:24:36,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 18:24:36,556 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 18:24:36,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 18:24:36,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 18:24:36,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 18:24:36,911 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 18:24:36,913 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 18:24:36,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-25 18:24:38,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 18:24:38,364 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 18:24:38,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-25 18:24:38,386 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e621bf2c/8d1f8a3ee5ee4b91be55ae98d2b0a8a9/FLAG5a6cb96f2 [2023-08-25 18:24:38,399 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e621bf2c/8d1f8a3ee5ee4b91be55ae98d2b0a8a9 [2023-08-25 18:24:38,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 18:24:38,402 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 18:24:38,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 18:24:38,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 18:24:38,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 18:24:38,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:24:38" (1/1) ... [2023-08-25 18:24:38,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119081e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:38, skipping insertion in model container [2023-08-25 18:24:38,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:24:38" (1/1) ... [2023-08-25 18:24:38,466 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 18:24:38,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 18:24:38,938 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 18:24:38,969 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-25 18:24:38,971 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-25 18:24:39,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 18:24:39,088 INFO L206 MainTranslator]: Completed translation [2023-08-25 18:24:39,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39 WrapperNode [2023-08-25 18:24:39,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 18:24:39,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 18:24:39,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 18:24:39,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 18:24:39,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39" (1/1) ... [2023-08-25 18:24:39,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39" (1/1) ... [2023-08-25 18:24:39,159 INFO L138 Inliner]: procedures = 279, calls = 87, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 534 [2023-08-25 18:24:39,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 18:24:39,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 18:24:39,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 18:24:39,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 18:24:39,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39" (1/1) ... [2023-08-25 18:24:39,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39" (1/1) ... [2023-08-25 18:24:39,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39" (1/1) ... [2023-08-25 18:24:39,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39" (1/1) ... [2023-08-25 18:24:39,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39" (1/1) ... [2023-08-25 18:24:39,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39" (1/1) ... [2023-08-25 18:24:39,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39" (1/1) ... [2023-08-25 18:24:39,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39" (1/1) ... [2023-08-25 18:24:39,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 18:24:39,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 18:24:39,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 18:24:39,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 18:24:39,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39" (1/1) ... [2023-08-25 18:24:39,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 18:24:39,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 18:24:39,294 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 18:24:39,318 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 18:24:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 18:24:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-25 18:24:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-25 18:24:39,335 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-25 18:24:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 18:24:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 18:24:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-25 18:24:39,335 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-25 18:24:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 18:24:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 18:24:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 18:24:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 18:24:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-25 18:24:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-25 18:24:39,336 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-25 18:24:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 18:24:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 18:24:39,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 18:24:39,338 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 18:24:39,533 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 18:24:39,535 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 18:24:40,231 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 18:24:40,248 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 18:24:40,248 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-25 18:24:40,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:24:40 BoogieIcfgContainer [2023-08-25 18:24:40,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 18:24:40,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 18:24:40,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 18:24:40,256 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 18:24:40,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:24:38" (1/3) ... [2023-08-25 18:24:40,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4c0689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:24:40, skipping insertion in model container [2023-08-25 18:24:40,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:24:39" (2/3) ... [2023-08-25 18:24:40,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4c0689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:24:40, skipping insertion in model container [2023-08-25 18:24:40,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:24:40" (3/3) ... [2023-08-25 18:24:40,259 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2023-08-25 18:24:40,274 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 18:24:40,275 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-08-25 18:24:40,276 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 18:24:40,455 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-25 18:24:40,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 536 places, 577 transitions, 1196 flow [2023-08-25 18:24:41,137 INFO L124 PetriNetUnfolderBase]: 171/1668 cut-off events. [2023-08-25 18:24:41,137 INFO L125 PetriNetUnfolderBase]: For 36/62 co-relation queries the response was YES. [2023-08-25 18:24:41,173 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 18:24:41,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 536 places, 577 transitions, 1196 flow [2023-08-25 18:24:41,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 528 places, 569 transitions, 1180 flow [2023-08-25 18:24:41,240 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:24:41,247 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 528 places, 569 transitions, 1180 flow [2023-08-25 18:24:41,249 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 528 places, 569 transitions, 1180 flow [2023-08-25 18:24:41,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 528 places, 569 transitions, 1180 flow [2023-08-25 18:24:41,702 INFO L124 PetriNetUnfolderBase]: 171/1660 cut-off events. [2023-08-25 18:24:41,702 INFO L125 PetriNetUnfolderBase]: For 36/62 co-relation queries the response was YES. [2023-08-25 18:24:41,731 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 18:24:41,833 INFO L119 LiptonReduction]: Number of co-enabled transitions 146418 [2023-08-25 18:25:04,018 WARN L234 SmtUtils]: Spent 6.79s on a formula simplification that was a NOOP. DAG size: 162 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:25:15,245 WARN L234 SmtUtils]: Spent 6.32s on a formula simplification that was a NOOP. DAG size: 162 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:25:20,368 WARN L234 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 152 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:25:38,877 WARN L234 SmtUtils]: Spent 17.84s on a formula simplification. DAG size of input: 291 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:25:51,599 WARN L234 SmtUtils]: Spent 12.72s 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 18:25:58,372 WARN L234 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 291 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:26:01,682 INFO L134 LiptonReduction]: Checked pairs total: 769103 [2023-08-25 18:26:01,683 INFO L136 LiptonReduction]: Total number of compositions: 367 [2023-08-25 18:26:01,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:26:01,697 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;@1f0b32e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:26:01,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-25 18:26:01,703 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:26:01,704 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2023-08-25 18:26:01,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 18:26:01,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:26:01,704 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 18:26:01,705 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 18:26:01,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:26:01,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1699666588, now seen corresponding path program 1 times [2023-08-25 18:26:01,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:26:01,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268555007] [2023-08-25 18:26:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:26:01,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:26:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:26:01,941 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:26:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:26:02,043 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:26:02,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:26:02,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-25 18:26:02,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-25 18:26:02,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-25 18:26:02,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 18:26:02,047 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:26:02,050 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-25 18:26:02,051 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:26:02,052 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 18:26:02,196 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-25 18:26:02,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 870 places, 947 transitions, 1984 flow [2023-08-25 18:26:06,296 INFO L124 PetriNetUnfolderBase]: 1156/8284 cut-off events. [2023-08-25 18:26:06,296 INFO L125 PetriNetUnfolderBase]: For 602/807 co-relation queries the response was YES. [2023-08-25 18:26:06,565 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 84819 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 18:26:06,565 INFO L82 GeneralOperation]: Start removeDead. Operand has 870 places, 947 transitions, 1984 flow [2023-08-25 18:26:06,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 862 places, 939 transitions, 1968 flow [2023-08-25 18:26:06,684 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:26:06,684 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 862 places, 939 transitions, 1968 flow [2023-08-25 18:26:06,685 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 862 places, 939 transitions, 1968 flow [2023-08-25 18:26:06,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 862 places, 939 transitions, 1968 flow [2023-08-25 18:26:09,997 INFO L124 PetriNetUnfolderBase]: 1156/8276 cut-off events. [2023-08-25 18:26:09,998 INFO L125 PetriNetUnfolderBase]: For 602/807 co-relation queries the response was YES. [2023-08-25 18:26:10,235 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 84654 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 18:26:11,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 563940 [2023-08-25 18:26:57,756 WARN L234 SmtUtils]: Spent 19.18s on a formula simplification. DAG size of input: 309 DAG size of output: 301 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:27:08,049 WARN L234 SmtUtils]: Spent 10.29s 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 18:27:28,798 WARN L234 SmtUtils]: Spent 20.74s on a formula simplification. DAG size of input: 309 DAG size of output: 301 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:27:33,356 INFO L134 LiptonReduction]: Checked pairs total: 3133330 [2023-08-25 18:27:33,357 INFO L136 LiptonReduction]: Total number of compositions: 555 [2023-08-25 18:27:33,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:27:33,360 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;@1f0b32e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:27:33,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-25 18:27:33,371 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:27:33,371 INFO L124 PetriNetUnfolderBase]: 4/162 cut-off events. [2023-08-25 18:27:33,371 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 18:27:33,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:27:33,372 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 18:27:33,372 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 18:27:33,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:27:33,372 INFO L85 PathProgramCache]: Analyzing trace with hash 429041215, now seen corresponding path program 1 times [2023-08-25 18:27:33,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:27:33,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982990523] [2023-08-25 18:27:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:27:33,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:27:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:27:33,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:27:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:27:33,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:27:33,442 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:27:33,442 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-25 18:27:33,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-25 18:27:33,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-25 18:27:33,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 18:27:33,443 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:27:33,444 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-25 18:27:33,444 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:27:33,444 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 18:27:33,571 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-08-25 18:27:33,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1204 places, 1317 transitions, 2778 flow [2023-08-25 18:28:09,867 INFO L124 PetriNetUnfolderBase]: 9047/45458 cut-off events. [2023-08-25 18:28:09,868 INFO L125 PetriNetUnfolderBase]: For 7059/7679 co-relation queries the response was YES. [2023-08-25 18:28:14,334 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 18:28:14,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 1204 places, 1317 transitions, 2778 flow [2023-08-25 18:28:15,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1196 places, 1309 transitions, 2762 flow [2023-08-25 18:28:15,745 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:28:15,746 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1196 places, 1309 transitions, 2762 flow [2023-08-25 18:28:15,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1196 places, 1309 transitions, 2762 flow [2023-08-25 18:28:15,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1196 places, 1309 transitions, 2762 flow [2023-08-25 18:28:50,329 INFO L124 PetriNetUnfolderBase]: 9047/45450 cut-off events. [2023-08-25 18:28:50,330 INFO L125 PetriNetUnfolderBase]: For 7059/7679 co-relation queries the response was YES. [2023-08-25 18:28:55,189 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 18:29:03,951 INFO L119 LiptonReduction]: Number of co-enabled transitions 1252566 [2023-08-25 18:30:02,939 WARN L234 SmtUtils]: Spent 24.82s on a formula simplification. DAG size of input: 291 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:30:09,583 WARN L234 SmtUtils]: Spent 6.64s 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 18:30:33,311 WARN L234 SmtUtils]: Spent 23.73s on a formula simplification. DAG size of input: 291 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 18:30:43,814 WARN L234 SmtUtils]: Spent 10.50s 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 18:30:43,843 INFO L134 LiptonReduction]: Checked pairs total: 7800392 [2023-08-25 18:30:43,843 INFO L136 LiptonReduction]: Total number of compositions: 770 [2023-08-25 18:30:43,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:30:43,847 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;@1f0b32e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:30:43,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-25 18:30:43,880 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:30:43,880 INFO L124 PetriNetUnfolderBase]: 23/464 cut-off events. [2023-08-25 18:30:43,881 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-25 18:30:43,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:30:43,881 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-25 18:30:43,881 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 18:30:43,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:30:43,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2068245554, now seen corresponding path program 1 times [2023-08-25 18:30:43,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:30:43,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252756320] [2023-08-25 18:30:43,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:30:43,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:30:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:30:43,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:30:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:30:43,944 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:30:43,945 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:30:43,945 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-25 18:30:43,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-25 18:30:43,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-25 18:30:43,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 18:30:43,946 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:30:43,946 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-25 18:30:43,946 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:30:43,946 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-25 18:30:44,092 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-08-25 18:30:44,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1538 places, 1687 transitions, 3578 flow