/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/pthread-divine/ring_2w1r-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 17:12:47,375 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 17:12:47,430 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 17:12:47,435 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 17:12:47,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 17:12:47,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 17:12:47,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 17:12:47,465 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 17:12:47,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 17:12:47,468 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 17:12:47,469 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 17:12:47,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 17:12:47,469 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 17:12:47,470 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 17:12:47,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 17:12:47,470 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 17:12:47,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 17:12:47,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 17:12:47,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 17:12:47,470 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 17:12:47,471 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 17:12:47,471 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 17:12:47,471 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 17:12:47,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 17:12:47,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 17:12:47,472 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 17:12:47,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 17:12:47,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:12:47,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 17:12:47,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 17:12:47,473 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 17:12:47,473 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 17:12:47,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 17:12:47,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 17:12:47,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 17:12:47,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 17:12:47,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 17:12:47,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 17:12:47,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 17:12:47,729 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 17:12:47,729 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 17:12:47,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i [2023-08-25 17:12:48,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 17:12:48,831 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 17:12:48,832 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i [2023-08-25 17:12:48,841 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9240835/2ceaf6bee25a4ac4978b0bf55f142e68/FLAGbfc3a6cec [2023-08-25 17:12:48,850 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9240835/2ceaf6bee25a4ac4978b0bf55f142e68 [2023-08-25 17:12:48,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 17:12:48,852 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 17:12:48,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 17:12:48,853 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 17:12:48,855 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 17:12:48,855 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:12:48" (1/1) ... [2023-08-25 17:12:48,856 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ad4a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:48, skipping insertion in model container [2023-08-25 17:12:48,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:12:48" (1/1) ... [2023-08-25 17:12:48,898 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 17:12:48,982 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-25 17:12:49,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:12:49,270 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 17:12:49,282 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-25 17:12:49,294 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [250] [2023-08-25 17:12:49,295 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [250] [2023-08-25 17:12:49,300 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile long [805] [2023-08-25 17:12:49,300 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [806] [2023-08-25 17:12:49,300 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile long [807] [2023-08-25 17:12:49,300 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [809] [2023-08-25 17:12:49,302 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [814] [2023-08-25 17:12:49,302 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [815] [2023-08-25 17:12:49,308 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [827] [2023-08-25 17:12:49,312 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [843] [2023-08-25 17:12:49,315 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [899] [2023-08-25 17:12:49,318 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1054] [2023-08-25 17:12:49,336 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1078] [2023-08-25 17:12:49,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:12:49,383 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 17:12:49,387 INFO L206 MainTranslator]: Completed translation [2023-08-25 17:12:49,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49 WrapperNode [2023-08-25 17:12:49,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 17:12:49,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 17:12:49,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 17:12:49,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 17:12:49,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49" (1/1) ... [2023-08-25 17:12:49,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49" (1/1) ... [2023-08-25 17:12:49,469 INFO L138 Inliner]: procedures = 310, calls = 77, calls flagged for inlining = 17, calls inlined = 12, statements flattened = 364 [2023-08-25 17:12:49,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 17:12:49,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 17:12:49,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 17:12:49,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 17:12:49,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49" (1/1) ... [2023-08-25 17:12:49,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49" (1/1) ... [2023-08-25 17:12:49,489 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49" (1/1) ... [2023-08-25 17:12:49,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49" (1/1) ... [2023-08-25 17:12:49,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49" (1/1) ... [2023-08-25 17:12:49,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49" (1/1) ... [2023-08-25 17:12:49,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49" (1/1) ... [2023-08-25 17:12:49,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49" (1/1) ... [2023-08-25 17:12:49,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 17:12:49,528 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 17:12:49,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 17:12:49,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 17:12:49,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49" (1/1) ... [2023-08-25 17:12:49,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:12:49,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:12:49,555 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 17:12:49,561 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 17:12:49,577 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2023-08-25 17:12:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2023-08-25 17:12:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2023-08-25 17:12:49,580 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2023-08-25 17:12:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 17:12:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 17:12:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 17:12:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 17:12:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 17:12:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 17:12:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 17:12:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 17:12:49,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 17:12:49,581 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 17:12:49,686 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 17:12:49,687 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 17:12:50,162 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 17:12:50,178 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 17:12:50,178 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-25 17:12:50,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:12:50 BoogieIcfgContainer [2023-08-25 17:12:50,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 17:12:50,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 17:12:50,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 17:12:50,185 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 17:12:50,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:12:48" (1/3) ... [2023-08-25 17:12:50,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fad7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:12:50, skipping insertion in model container [2023-08-25 17:12:50,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:12:49" (2/3) ... [2023-08-25 17:12:50,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fad7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:12:50, skipping insertion in model container [2023-08-25 17:12:50,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:12:50" (3/3) ... [2023-08-25 17:12:50,187 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2023-08-25 17:12:50,197 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 17:12:50,197 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-25 17:12:50,197 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 17:12:50,272 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 17:12:50,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 412 transitions, 840 flow [2023-08-25 17:12:50,468 INFO L124 PetriNetUnfolderBase]: 21/410 cut-off events. [2023-08-25 17:12:50,468 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 17:12:50,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 410 events. 21/410 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 972 event pairs, 0 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 344. Up to 2 conditions per place. [2023-08-25 17:12:50,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 398 places, 412 transitions, 840 flow [2023-08-25 17:12:50,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 386 places, 400 transitions, 809 flow [2023-08-25 17:12:50,493 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:12:50,502 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 386 places, 400 transitions, 809 flow [2023-08-25 17:12:50,503 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 386 places, 400 transitions, 809 flow [2023-08-25 17:12:50,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 400 transitions, 809 flow [2023-08-25 17:12:50,565 INFO L124 PetriNetUnfolderBase]: 21/400 cut-off events. [2023-08-25 17:12:50,565 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 17:12:50,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 400 events. 21/400 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 945 event pairs, 0 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 344. Up to 2 conditions per place. [2023-08-25 17:12:50,591 INFO L119 LiptonReduction]: Number of co-enabled transitions 72148 [2023-08-25 17:13:00,238 INFO L134 LiptonReduction]: Checked pairs total: 428497 [2023-08-25 17:13:00,238 INFO L136 LiptonReduction]: Total number of compositions: 252 [2023-08-25 17:13:00,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 17:13:00,259 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;@69169865, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:13:00,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2023-08-25 17:13:00,260 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:13:00,260 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 17:13:00,261 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:13:00,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:13:00,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 17:13:00,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 17:13:00,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:13:00,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1446, now seen corresponding path program 1 times [2023-08-25 17:13:00,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:13:00,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883970599] [2023-08-25 17:13:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:13:00,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:13:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:13:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:13:00,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:13:00,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883970599] [2023-08-25 17:13:00,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883970599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:13:00,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:13:00,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 17:13:00,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434754772] [2023-08-25 17:13:00,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:13:00,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 17:13:00,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:13:00,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 17:13:00,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 17:13:00,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 664 [2023-08-25 17:13:00,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 207 transitions, 423 flow. Second operand has 2 states, 2 states have (on average 394.5) internal successors, (789), 2 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:13:00,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:13:00,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 664 [2023-08-25 17:13:00,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:13:01,823 INFO L124 PetriNetUnfolderBase]: 5945/16044 cut-off events. [2023-08-25 17:13:01,824 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 17:13:01,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24535 conditions, 16044 events. 5945/16044 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 156483 event pairs, 4528 based on Foata normal form. 915/14426 useless extension candidates. Maximal degree in co-relation 24335. Up to 8430 conditions per place. [2023-08-25 17:13:01,896 INFO L140 encePairwiseOnDemand]: 656/664 looper letters, 52 selfloop transitions, 0 changer transitions 0/198 dead transitions. [2023-08-25 17:13:01,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 198 transitions, 509 flow [2023-08-25 17:13:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 17:13:01,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 17:13:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 848 transitions. [2023-08-25 17:13:01,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6385542168674698 [2023-08-25 17:13:01,906 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 848 transitions. [2023-08-25 17:13:01,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 848 transitions. [2023-08-25 17:13:01,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:13:01,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 848 transitions. [2023-08-25 17:13:01,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 424.0) internal successors, (848), 2 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:13:01,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 664.0) internal successors, (1992), 3 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:13:01,918 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 664.0) internal successors, (1992), 3 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:13:01,919 INFO L175 Difference]: Start difference. First operand has 201 places, 207 transitions, 423 flow. Second operand 2 states and 848 transitions. [2023-08-25 17:13:01,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 198 transitions, 509 flow [2023-08-25 17:13:01,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 198 transitions, 504 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 17:13:01,927 INFO L231 Difference]: Finished difference. Result has 196 places, 198 transitions, 400 flow [2023-08-25 17:13:01,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=664, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=400, PETRI_PLACES=196, PETRI_TRANSITIONS=198} [2023-08-25 17:13:01,931 INFO L281 CegarLoopForPetriNet]: 201 programPoint places, -5 predicate places. [2023-08-25 17:13:01,931 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 198 transitions, 400 flow [2023-08-25 17:13:01,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 394.5) internal successors, (789), 2 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:13:01,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:13:01,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:13:01,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 17:13:01,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 17:13:01,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:13:01,933 INFO L85 PathProgramCache]: Analyzing trace with hash 291940890, now seen corresponding path program 1 times [2023-08-25 17:13:01,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:13:01,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121443699] [2023-08-25 17:13:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:13:01,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:13:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:13:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:13:02,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:13:02,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121443699] [2023-08-25 17:13:02,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121443699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:13:02,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:13:02,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 17:13:02,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47127552] [2023-08-25 17:13:02,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:13:02,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:13:02,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:13:02,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:13:02,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:13:02,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 386 out of 664 [2023-08-25 17:13:02,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 198 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:13:02,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:13:02,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 386 of 664 [2023-08-25 17:13:02,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:13:04,644 INFO L124 PetriNetUnfolderBase]: 10762/30553 cut-off events. [2023-08-25 17:13:04,644 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-25 17:13:04,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45859 conditions, 30553 events. 10762/30553 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 329871 event pairs, 6796 based on Foata normal form. 0/25831 useless extension candidates. Maximal degree in co-relation 45856. Up to 8430 conditions per place. [2023-08-25 17:13:04,777 INFO L140 encePairwiseOnDemand]: 661/664 looper letters, 94 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2023-08-25 17:13:04,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 242 transitions, 680 flow [2023-08-25 17:13:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:13:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:13:04,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1255 transitions. [2023-08-25 17:13:04,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6300200803212851 [2023-08-25 17:13:04,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1255 transitions. [2023-08-25 17:13:04,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1255 transitions. [2023-08-25 17:13:04,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:13:04,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1255 transitions. [2023-08-25 17:13:04,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 418.3333333333333) internal successors, (1255), 3 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:13:04,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 664.0) internal successors, (2656), 4 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:13:04,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 664.0) internal successors, (2656), 4 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:13:04,788 INFO L175 Difference]: Start difference. First operand has 196 places, 198 transitions, 400 flow. Second operand 3 states and 1255 transitions. [2023-08-25 17:13:04,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 242 transitions, 680 flow [2023-08-25 17:13:04,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 242 transitions, 680 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 17:13:04,798 INFO L231 Difference]: Finished difference. Result has 199 places, 199 transitions, 412 flow [2023-08-25 17:13:04,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=664, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=199, PETRI_TRANSITIONS=199} [2023-08-25 17:13:04,798 INFO L281 CegarLoopForPetriNet]: 201 programPoint places, -2 predicate places. [2023-08-25 17:13:04,799 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 199 transitions, 412 flow [2023-08-25 17:13:04,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:13:04,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:13:04,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:13:04,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 17:13:04,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 17:13:04,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:13:04,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1729310725, now seen corresponding path program 1 times [2023-08-25 17:13:04,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:13:04,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543986037] [2023-08-25 17:13:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:13:04,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:13:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:13:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:13:05,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:13:05,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543986037] [2023-08-25 17:13:05,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543986037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:13:05,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:13:05,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:13:05,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292207415] [2023-08-25 17:13:05,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:13:05,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:13:05,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:13:05,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:13:05,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:13:05,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 664 [2023-08-25 17:13:05,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 199 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:13:05,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:13:05,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 664 [2023-08-25 17:13:05,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand