/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.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 07:11:19,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 07:11:19,912 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 [2023-08-27 07:11:19,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 07:11:19,917 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 07:11:19,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 07:11:19,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 07:11:19,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 07:11:19,949 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 07:11:19,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 07:11:19,953 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 07:11:19,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 07:11:19,954 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 07:11:19,955 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 07:11:19,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 07:11:19,955 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 07:11:19,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 07:11:19,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 07:11:19,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 07:11:19,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 07:11:19,956 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 07:11:19,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 07:11:19,957 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 07:11:19,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 07:11:19,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 07:11:19,958 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 07:11:19,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 07:11:19,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:11:19,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 07:11:19,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 07:11:19,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 07:11:19,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 07:11:19,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 07:11:19,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 07:11:19,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 07:11:19,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 07:11:20,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 07:11:20,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 07:11:20,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 07:11:20,334 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 07:11:20,334 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 07:11:20,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c [2023-08-27 07:11:21,492 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 07:11:21,726 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 07:11:21,727 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c [2023-08-27 07:11:21,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f17c9f83/2fd061ebd9164301af8bd69d767d24b6/FLAGfcedc8138 [2023-08-27 07:11:21,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f17c9f83/2fd061ebd9164301af8bd69d767d24b6 [2023-08-27 07:11:21,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 07:11:21,748 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 07:11:21,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 07:11:21,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 07:11:21,752 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 07:11:21,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:21,753 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@591d7768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21, skipping insertion in model container [2023-08-27 07:11:21,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:21,776 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 07:11:21,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:11:21,927 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 07:11:21,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:11:21,965 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:11:21,965 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:11:21,971 INFO L206 MainTranslator]: Completed translation [2023-08-27 07:11:21,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21 WrapperNode [2023-08-27 07:11:21,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 07:11:21,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 07:11:21,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 07:11:21,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 07:11:21,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:21,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:22,015 INFO L138 Inliner]: procedures = 27, calls = 131, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 404 [2023-08-27 07:11:22,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 07:11:22,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 07:11:22,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 07:11:22,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 07:11:22,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:22,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:22,028 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:22,028 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:22,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:22,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:22,040 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:22,042 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:22,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 07:11:22,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 07:11:22,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 07:11:22,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 07:11:22,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21" (1/1) ... [2023-08-27 07:11:22,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:11:22,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:11:22,074 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) [2023-08-27 07:11:22,106 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 [2023-08-27 07:11:22,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 07:11:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 07:11:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 07:11:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 07:11:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 07:11:22,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 07:11:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 07:11:22,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 07:11:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 07:11:22,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 07:11:22,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 07:11:22,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 07:11:22,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 07:11:22,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-27 07:11:22,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-27 07:11:22,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-27 07:11:22,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-27 07:11:22,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2023-08-27 07:11:22,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2023-08-27 07:11:22,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2023-08-27 07:11:22,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2023-08-27 07:11:22,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 07:11:22,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 07:11:22,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 07:11:22,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 07:11:22,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 07:11:22,128 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 07:11:22,280 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 07:11:22,282 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 07:11:22,804 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 07:11:22,963 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 07:11:22,964 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 07:11:22,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:11:22 BoogieIcfgContainer [2023-08-27 07:11:22,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 07:11:22,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 07:11:22,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 07:11:22,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 07:11:22,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:11:21" (1/3) ... [2023-08-27 07:11:22,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc435e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:11:22, skipping insertion in model container [2023-08-27 07:11:22,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:11:21" (2/3) ... [2023-08-27 07:11:22,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc435e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:11:22, skipping insertion in model container [2023-08-27 07:11:22,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:11:22" (3/3) ... [2023-08-27 07:11:22,973 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-8.wvr.c [2023-08-27 07:11:22,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 07:11:22,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-08-27 07:11:22,988 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 07:11:23,078 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-27 07:11:23,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 272 transitions, 608 flow [2023-08-27 07:11:23,250 INFO L124 PetriNetUnfolderBase]: 2/264 cut-off events. [2023-08-27 07:11:23,251 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 07:11:23,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 264 events. 2/264 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 221 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2023-08-27 07:11:23,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 272 transitions, 608 flow [2023-08-27 07:11:23,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 243 transitions, 534 flow [2023-08-27 07:11:23,272 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 07:11:23,286 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 243 transitions, 534 flow [2023-08-27 07:11:23,293 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 243 transitions, 534 flow [2023-08-27 07:11:23,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 243 transitions, 534 flow [2023-08-27 07:11:23,362 INFO L124 PetriNetUnfolderBase]: 2/243 cut-off events. [2023-08-27 07:11:23,363 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 07:11:23,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 243 events. 2/243 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 220 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2023-08-27 07:11:23,370 INFO L119 LiptonReduction]: Number of co-enabled transitions 11350 [2023-08-27 07:11:33,796 INFO L134 LiptonReduction]: Checked pairs total: 71765 [2023-08-27 07:11:33,797 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-08-27 07:11:33,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 07:11:33,814 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;@25d02607, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 07:11:33,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2023-08-27 07:11:33,817 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 07:11:33,817 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-08-27 07:11:33,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:11:33,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:11:33,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:11:33,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-08-27 07:11:33,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:11:33,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1121500, now seen corresponding path program 1 times [2023-08-27 07:11:33,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:11:33,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079505033] [2023-08-27 07:11:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:11:33,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:11:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:11:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:11:34,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:11:34,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079505033] [2023-08-27 07:11:34,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079505033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:11:34,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:11:34,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:11:34,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274434457] [2023-08-27 07:11:34,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:11:34,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:11:34,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:11:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:11:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:11:34,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 423 [2023-08-27 07:11:34,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 98 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 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) [2023-08-27 07:11:34,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:11:34,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 423 [2023-08-27 07:11:34,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand