/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.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_83-list2_racing1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:46:41,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:46:41,519 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 12:46:41,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:46:41,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:46:41,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:46:41,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:46:41,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:46:41,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:46:41,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:46:41,545 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:46:41,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:46:41,545 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:46:41,546 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:46:41,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:46:41,546 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:46:41,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:46:41,547 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:46:41,547 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:46:41,548 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:46:41,548 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:46:41,549 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:46:41,549 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:46:41,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:46:41,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:46:41,550 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:46:41,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:46:41,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:46:41,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:46:41,552 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:46:41,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:46:41,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:46:41,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:46:41,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:46:41,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:46:41,554 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:46:41,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:46:41,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:46:41,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:46:41,938 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:46:41,938 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:46:41,940 INFO L431 ainManager$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 [2023-08-26 12:46:43,147 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:46:43,442 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:46:43,443 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-26 12:46:43,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4684243/389d539dce1948ccab91a4456c5728ea/FLAG65a26bb3f [2023-08-26 12:46:43,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4684243/389d539dce1948ccab91a4456c5728ea [2023-08-26 12:46:43,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:46:43,481 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:46:43,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:46:43,482 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:46:43,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:46:43,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:46:43" (1/1) ... [2023-08-26 12:46:43,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70702561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:43, skipping insertion in model container [2023-08-26 12:46:43,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:46:43" (1/1) ... [2023-08-26 12:46:43,547 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:46:44,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:46:44,062 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:46:44,083 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 12:46:44,093 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 12:46:44,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:46:44,200 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:46:44,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44 WrapperNode [2023-08-26 12:46:44,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:46:44,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:46:44,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:46:44,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:46:44,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44" (1/1) ... [2023-08-26 12:46:44,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44" (1/1) ... [2023-08-26 12:46:44,282 INFO L138 Inliner]: procedures = 279, calls = 87, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 356 [2023-08-26 12:46:44,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:46:44,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:46:44,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:46:44,284 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:46:44,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44" (1/1) ... [2023-08-26 12:46:44,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44" (1/1) ... [2023-08-26 12:46:44,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44" (1/1) ... [2023-08-26 12:46:44,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44" (1/1) ... [2023-08-26 12:46:44,309 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44" (1/1) ... [2023-08-26 12:46:44,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44" (1/1) ... [2023-08-26 12:46:44,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44" (1/1) ... [2023-08-26 12:46:44,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44" (1/1) ... [2023-08-26 12:46:44,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:46:44,342 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:46:44,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:46:44,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:46:44,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44" (1/1) ... [2023-08-26 12:46:44,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:46:44,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:46:44,370 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 12:46:44,381 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 12:46:44,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:46:44,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-26 12:46:44,407 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-26 12:46:44,407 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-26 12:46:44,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:46:44,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 12:46:44,407 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-26 12:46:44,408 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-26 12:46:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:46:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:46:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 12:46:44,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:46:44,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 12:46:44,409 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-26 12:46:44,410 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-26 12:46:44,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:46:44,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:46:44,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:46:44,413 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 12:46:44,610 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:46:44,612 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:46:45,183 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:46:45,191 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:46:45,192 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-26 12:46:45,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:46:45 BoogieIcfgContainer [2023-08-26 12:46:45,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:46:45,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:46:45,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:46:45,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:46:45,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:46:43" (1/3) ... [2023-08-26 12:46:45,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4c1516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:46:45, skipping insertion in model container [2023-08-26 12:46:45,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:46:44" (2/3) ... [2023-08-26 12:46:45,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4c1516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:46:45, skipping insertion in model container [2023-08-26 12:46:45,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:46:45" (3/3) ... [2023-08-26 12:46:45,204 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2023-08-26 12:46:45,220 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:46:45,221 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2023-08-26 12:46:45,221 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:46:45,410 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 12:46:45,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 422 transitions, 886 flow [2023-08-26 12:46:45,852 INFO L124 PetriNetUnfolderBase]: 170/1311 cut-off events. [2023-08-26 12:46:45,852 INFO L125 PetriNetUnfolderBase]: For 36/57 co-relation queries the response was YES. [2023-08-26 12:46:45,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 1311 events. 170/1311 cut-off events. For 36/57 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9195 event pairs, 0 based on Foata normal form. 0/955 useless extension candidates. Maximal degree in co-relation 676. Up to 16 conditions per place. [2023-08-26 12:46:45,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 382 places, 422 transitions, 886 flow [2023-08-26 12:46:45,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 382 places, 422 transitions, 886 flow [2023-08-26 12:46:45,897 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:46:45,911 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 382 places, 422 transitions, 886 flow [2023-08-26 12:46:45,915 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 382 places, 422 transitions, 886 flow [2023-08-26 12:46:45,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 422 transitions, 886 flow [2023-08-26 12:46:46,157 INFO L124 PetriNetUnfolderBase]: 170/1311 cut-off events. [2023-08-26 12:46:46,158 INFO L125 PetriNetUnfolderBase]: For 36/57 co-relation queries the response was YES. [2023-08-26 12:46:46,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 1311 events. 170/1311 cut-off events. For 36/57 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9195 event pairs, 0 based on Foata normal form. 0/955 useless extension candidates. Maximal degree in co-relation 676. Up to 16 conditions per place. [2023-08-26 12:46:46,249 INFO L119 LiptonReduction]: Number of co-enabled transitions 77508 [2023-08-26 12:47:07,242 INFO L134 LiptonReduction]: Checked pairs total: 200261 [2023-08-26 12:47:07,242 INFO L136 LiptonReduction]: Total number of compositions: 377 [2023-08-26 12:47:07,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:47:07,261 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;@47c8e03f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:47:07,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 103 error locations. [2023-08-26 12:47:07,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:47:07,263 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:47:07,263 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:47:07,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:47:07,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:47:07,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 100 more)] === [2023-08-26 12:47:07,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:47:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1676, now seen corresponding path program 1 times [2023-08-26 12:47:07,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:47:07,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753176789] [2023-08-26 12:47:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:47:07,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:47:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:47:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:47:07,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:47:07,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753176789] [2023-08-26 12:47:07,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753176789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:47:07,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:47:07,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:47:07,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805959576] [2023-08-26 12:47:07,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:47:07,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:47:07,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:47:07,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:47:07,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:47:07,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 799 [2023-08-26 12:47:07,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 173 transitions, 388 flow. Second operand has 2 states, 2 states have (on average 376.5) internal successors, (753), 2 states have internal predecessors, (753), 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 12:47:07,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:47:07,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 799 [2023-08-26 12:47:07,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:48:06,429 INFO L124 PetriNetUnfolderBase]: 586092/881693 cut-off events. [2023-08-26 12:48:06,429 INFO L125 PetriNetUnfolderBase]: For 9651/9651 co-relation queries the response was YES. [2023-08-26 12:48:08,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1665847 conditions, 881693 events. 586092/881693 cut-off events. For 9651/9651 co-relation queries the response was YES. Maximal size of possible extension queue 21477. Compared 8512999 event pairs, 550296 based on Foata normal form. 39477/510505 useless extension candidates. Maximal degree in co-relation 1560932. Up to 778908 conditions per place. [2023-08-26 12:48:11,838 INFO L140 encePairwiseOnDemand]: 768/799 looper letters, 108 selfloop transitions, 0 changer transitions 0/142 dead transitions. [2023-08-26 12:48:11,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 142 transitions, 542 flow [2023-08-26 12:48:11,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:48:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:48:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 891 transitions. [2023-08-26 12:48:11,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575719649561952 [2023-08-26 12:48:11,853 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 891 transitions. [2023-08-26 12:48:11,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 891 transitions. [2023-08-26 12:48:11,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:48:11,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 891 transitions. [2023-08-26 12:48:11,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 445.5) internal successors, (891), 2 states have internal predecessors, (891), 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 12:48:11,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 799.0) internal successors, (2397), 3 states have internal predecessors, (2397), 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 12:48:11,872 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 799.0) internal successors, (2397), 3 states have internal predecessors, (2397), 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 12:48:11,874 INFO L175 Difference]: Start difference. First operand has 144 places, 173 transitions, 388 flow. Second operand 2 states and 891 transitions. [2023-08-26 12:48:11,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 142 transitions, 542 flow [2023-08-26 12:48:12,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 142 transitions, 542 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:48:12,130 INFO L231 Difference]: Finished difference. Result has 137 places, 142 transitions, 326 flow [2023-08-26 12:48:12,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=326, PETRI_PLACES=137, PETRI_TRANSITIONS=142} [2023-08-26 12:48:12,135 INFO L281 CegarLoopForPetriNet]: 144 programPoint places, -7 predicate places. [2023-08-26 12:48:12,135 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 142 transitions, 326 flow [2023-08-26 12:48:12,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 376.5) internal successors, (753), 2 states have internal predecessors, (753), 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 12:48:12,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:48:12,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 12:48:12,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:48:12,137 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 100 more)] === [2023-08-26 12:48:12,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:48:12,138 INFO L85 PathProgramCache]: Analyzing trace with hash 53613, now seen corresponding path program 1 times [2023-08-26 12:48:12,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:48:12,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540957103] [2023-08-26 12:48:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:48:12,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:48:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:48:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:48:12,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:48:12,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540957103] [2023-08-26 12:48:12,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540957103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:48:12,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:48:12,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:48:12,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55612956] [2023-08-26 12:48:12,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:48:12,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:48:12,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:48:12,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:48:12,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:48:12,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 799 [2023-08-26 12:48:12,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 142 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 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 12:48:12,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:48:12,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 799 [2023-08-26 12:48:12,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:49:49,087 INFO L124 PetriNetUnfolderBase]: 993837/1393895 cut-off events. [2023-08-26 12:49:49,088 INFO L125 PetriNetUnfolderBase]: For 14640/14640 co-relation queries the response was YES. [2023-08-26 12:49:51,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2723573 conditions, 1393895 events. 993837/1393895 cut-off events. For 14640/14640 co-relation queries the response was YES. Maximal size of possible extension queue 27869. Compared 11913512 event pairs, 925788 based on Foata normal form. 0/726659 useless extension candidates. Maximal degree in co-relation 2723567. Up to 1322279 conditions per place. [2023-08-26 12:49:59,840 INFO L140 encePairwiseOnDemand]: 794/799 looper letters, 122 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2023-08-26 12:49:59,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 146 transitions, 584 flow [2023-08-26 12:49:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:49:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:49:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1012 transitions. [2023-08-26 12:49:59,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42219440967876515 [2023-08-26 12:49:59,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1012 transitions. [2023-08-26 12:49:59,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1012 transitions. [2023-08-26 12:49:59,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:49:59,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1012 transitions. [2023-08-26 12:49:59,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 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 12:49:59,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 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 12:49:59,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 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 12:49:59,886 INFO L175 Difference]: Start difference. First operand has 137 places, 142 transitions, 326 flow. Second operand 3 states and 1012 transitions. [2023-08-26 12:49:59,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 146 transitions, 584 flow [2023-08-26 12:49:59,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 146 transitions, 584 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:49:59,998 INFO L231 Difference]: Finished difference. Result has 140 places, 144 transitions, 347 flow [2023-08-26 12:50:00,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=140, PETRI_TRANSITIONS=144} [2023-08-26 12:50:00,022 INFO L281 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2023-08-26 12:50:00,022 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 144 transitions, 347 flow [2023-08-26 12:50:00,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 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 12:50:00,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:50:00,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 12:50:00,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:50:00,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 100 more)] === [2023-08-26 12:50:00,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:50:00,024 INFO L85 PathProgramCache]: Analyzing trace with hash 53612, now seen corresponding path program 1 times [2023-08-26 12:50:00,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:50:00,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024576564] [2023-08-26 12:50:00,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:50:00,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:50:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:50:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:50:00,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:50:00,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024576564] [2023-08-26 12:50:00,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024576564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:50:00,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:50:00,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:50:00,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321601115] [2023-08-26 12:50:00,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:50:00,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:50:00,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:50:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:50:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:50:00,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 799 [2023-08-26 12:50:00,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 144 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 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 12:50:00,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:50:00,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 799 [2023-08-26 12:50:00,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand