/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.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:32:05,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:32:05,817 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 00:32:05,823 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:32:05,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:32:05,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:32:05,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:32:05,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:32:05,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:32:05,868 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:32:05,869 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:32:05,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:32:05,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:32:05,870 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:32:05,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:32:05,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:32:05,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:32:05,871 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:32:05,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:32:05,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:32:05,871 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:32:05,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:32:05,872 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:32:05,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:32:05,873 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:32:05,873 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:32:05,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:32:05,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:32:05,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:32:05,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:32:05,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:32:05,875 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:32:05,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:32:05,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:32:05,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:32:05,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:32:06,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:32:06,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:32:06,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:32:06,202 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:32:06,202 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:32:06,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2023-08-27 00:32:07,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:32:07,679 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:32:07,680 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2023-08-27 00:32:07,686 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/401575631/b3159461d4814ae2a2e76689f77cb6c6/FLAGe2c8a4cb2 [2023-08-27 00:32:07,697 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/401575631/b3159461d4814ae2a2e76689f77cb6c6 [2023-08-27 00:32:07,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:32:07,700 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:32:07,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:32:07,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:32:07,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:32:07,705 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:07,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a04afe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07, skipping insertion in model container [2023-08-27 00:32:07,706 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:07,741 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:32:07,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:32:07,901 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:32:07,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:32:07,936 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:32:07,936 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:32:07,942 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:32:07,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07 WrapperNode [2023-08-27 00:32:07,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:32:07,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:32:07,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:32:07,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:32:07,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:07,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:08,002 INFO L138 Inliner]: procedures = 29, calls = 89, calls flagged for inlining = 23, calls inlined = 33, statements flattened = 502 [2023-08-27 00:32:08,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:32:08,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:32:08,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:32:08,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:32:08,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:08,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:08,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:08,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:08,031 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:08,037 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:08,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:08,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:08,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:32:08,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:32:08,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:32:08,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:32:08,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07" (1/1) ... [2023-08-27 00:32:08,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:32:08,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:32:08,087 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 00:32:08,105 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 00:32:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:32:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:32:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:32:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:32:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:32:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:32:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:32:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:32:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 00:32:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 00:32:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 00:32:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 00:32:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:32:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-27 00:32:08,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-27 00:32:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-27 00:32:08,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-27 00:32:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:32:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:32:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 00:32:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:32:08,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:32:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:32:08,136 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 00:32:08,269 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:32:08,279 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:32:08,985 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:32:09,546 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:32:09,546 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-27 00:32:09,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:32:09 BoogieIcfgContainer [2023-08-27 00:32:09,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:32:09,550 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:32:09,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:32:09,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:32:09,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:32:07" (1/3) ... [2023-08-27 00:32:09,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7972f8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:32:09, skipping insertion in model container [2023-08-27 00:32:09,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:07" (2/3) ... [2023-08-27 00:32:09,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7972f8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:32:09, skipping insertion in model container [2023-08-27 00:32:09,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:32:09" (3/3) ... [2023-08-27 00:32:09,555 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2023-08-27 00:32:09,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:32:09,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2023-08-27 00:32:09,572 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:32:09,820 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-27 00:32:09,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 377 transitions, 826 flow [2023-08-27 00:32:09,958 INFO L124 PetriNetUnfolderBase]: 21/321 cut-off events. [2023-08-27 00:32:09,959 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 00:32:09,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 321 events. 21/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 549 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 268. Up to 3 conditions per place. [2023-08-27 00:32:09,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 373 places, 377 transitions, 826 flow [2023-08-27 00:32:09,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 312 transitions, 672 flow [2023-08-27 00:32:09,976 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:32:09,984 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 312 transitions, 672 flow [2023-08-27 00:32:09,987 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 312 transitions, 672 flow [2023-08-27 00:32:09,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 312 transitions, 672 flow [2023-08-27 00:32:10,049 INFO L124 PetriNetUnfolderBase]: 21/312 cut-off events. [2023-08-27 00:32:10,049 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 00:32:10,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 312 events. 21/312 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 558 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 268. Up to 3 conditions per place. [2023-08-27 00:32:10,059 INFO L119 LiptonReduction]: Number of co-enabled transitions 16956 [2023-08-27 00:32:35,766 INFO L134 LiptonReduction]: Checked pairs total: 59570 [2023-08-27 00:32:35,766 INFO L136 LiptonReduction]: Total number of compositions: 339 [2023-08-27 00:32:35,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:32:35,791 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;@525bfda6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:32:35,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 103 error locations. [2023-08-27 00:32:35,793 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:32:35,793 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 00:32:35,793 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:32:35,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:32:35,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-27 00:32:35,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 00:32:35,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:32:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2082, now seen corresponding path program 1 times [2023-08-27 00:32:35,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:32:35,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831068504] [2023-08-27 00:32:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:32:35,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:32:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:32:35,896 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 00:32:35,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:32:35,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831068504] [2023-08-27 00:32:35,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831068504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:32:35,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:32:35,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-27 00:32:35,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207039024] [2023-08-27 00:32:35,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:32:35,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 00:32:35,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:32:35,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 00:32:35,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 00:32:35,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 720 [2023-08-27 00:32:35,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 109 transitions, 266 flow. Second operand has 2 states, 2 states have (on average 274.5) internal successors, (549), 2 states have internal predecessors, (549), 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 00:32:35,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:32:35,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 720 [2023-08-27 00:32:35,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:02,479 INFO L124 PetriNetUnfolderBase]: 222342/281393 cut-off events. [2023-08-27 00:33:02,479 INFO L125 PetriNetUnfolderBase]: For 18315/18315 co-relation queries the response was YES. [2023-08-27 00:33:03,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579256 conditions, 281393 events. 222342/281393 cut-off events. For 18315/18315 co-relation queries the response was YES. Maximal size of possible extension queue 13697. Compared 1639395 event pairs, 194005 based on Foata normal form. 0/112870 useless extension candidates. Maximal degree in co-relation 576817. Up to 274189 conditions per place. [2023-08-27 00:33:04,289 INFO L140 encePairwiseOnDemand]: 706/720 looper letters, 73 selfloop transitions, 0 changer transitions 0/95 dead transitions. [2023-08-27 00:33:04,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 95 transitions, 384 flow [2023-08-27 00:33:04,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 00:33:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 00:33:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 635 transitions. [2023-08-27 00:33:04,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2023-08-27 00:33:04,302 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 635 transitions. [2023-08-27 00:33:04,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 635 transitions. [2023-08-27 00:33:04,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:04,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 635 transitions. [2023-08-27 00:33:04,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 317.5) internal successors, (635), 2 states have internal predecessors, (635), 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 00:33:04,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 720.0) internal successors, (2160), 3 states have internal predecessors, (2160), 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 00:33:04,317 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 720.0) internal successors, (2160), 3 states have internal predecessors, (2160), 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 00:33:04,318 INFO L175 Difference]: Start difference. First operand has 119 places, 109 transitions, 266 flow. Second operand 2 states and 635 transitions. [2023-08-27 00:33:04,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 95 transitions, 384 flow [2023-08-27 00:33:04,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 95 transitions, 352 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-27 00:33:04,872 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 206 flow [2023-08-27 00:33:04,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2023-08-27 00:33:04,876 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -25 predicate places. [2023-08-27 00:33:04,876 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 206 flow [2023-08-27 00:33:04,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 274.5) internal successors, (549), 2 states have internal predecessors, (549), 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 00:33:04,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:04,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 00:33:04,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:33:04,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 00:33:04,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:04,878 INFO L85 PathProgramCache]: Analyzing trace with hash 66612, now seen corresponding path program 1 times [2023-08-27 00:33:04,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:04,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578411887] [2023-08-27 00:33:04,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:04,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:05,004 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 00:33:05,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:05,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578411887] [2023-08-27 00:33:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578411887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:05,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:05,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:33:05,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359715427] [2023-08-27 00:33:05,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:05,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:33:05,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:05,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:33:05,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:33:05,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 720 [2023-08-27 00:33:05,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 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 00:33:05,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:05,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 720 [2023-08-27 00:33:05,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:27,481 INFO L124 PetriNetUnfolderBase]: 222343/281395 cut-off events. [2023-08-27 00:33:27,481 INFO L125 PetriNetUnfolderBase]: For 3201/3201 co-relation queries the response was YES. [2023-08-27 00:33:28,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561545 conditions, 281395 events. 222343/281395 cut-off events. For 3201/3201 co-relation queries the response was YES. Maximal size of possible extension queue 13697. Compared 1639370 event pairs, 194005 based on Foata normal form. 0/112871 useless extension candidates. Maximal degree in co-relation 561542. Up to 274190 conditions per place. [2023-08-27 00:33:29,111 INFO L140 encePairwiseOnDemand]: 715/720 looper letters, 72 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2023-08-27 00:33:29,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 360 flow [2023-08-27 00:33:29,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:33:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:33:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 875 transitions. [2023-08-27 00:33:29,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050925925925926 [2023-08-27 00:33:29,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 875 transitions. [2023-08-27 00:33:29,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 875 transitions. [2023-08-27 00:33:29,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:29,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 875 transitions. [2023-08-27 00:33:29,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.6666666666667) internal successors, (875), 3 states have internal predecessors, (875), 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 00:33:29,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 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 00:33:29,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 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 00:33:29,124 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 206 flow. Second operand 3 states and 875 transitions. [2023-08-27 00:33:29,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 360 flow [2023-08-27 00:33:29,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 00:33:29,127 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 227 flow [2023-08-27 00:33:29,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2023-08-27 00:33:29,128 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -22 predicate places. [2023-08-27 00:33:29,128 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 227 flow [2023-08-27 00:33:29,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 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 00:33:29,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:29,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:33:29,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 00:33:29,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 00:33:29,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:29,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2066949, now seen corresponding path program 1 times [2023-08-27 00:33:29,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:29,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488298379] [2023-08-27 00:33:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:29,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:33:29,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:29,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488298379] [2023-08-27 00:33:29,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488298379] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:33:29,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430885276] [2023-08-27 00:33:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:29,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:33:29,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:33:29,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:33:29,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 00:33:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:29,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:33:29,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:33:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:33:29,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:33:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:33:29,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430885276] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:33:29,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:33:29,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 00:33:29,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180945973] [2023-08-27 00:33:29,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:33:29,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:33:29,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:29,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:33:29,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:33:29,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 720 [2023-08-27 00:33:29,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 227 flow. Second operand has 7 states, 7 states have (on average 267.14285714285717) internal successors, (1870), 7 states have internal predecessors, (1870), 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 00:33:29,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:29,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 720 [2023-08-27 00:33:29,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:51,839 INFO L124 PetriNetUnfolderBase]: 222349/281404 cut-off events. [2023-08-27 00:33:51,839 INFO L125 PetriNetUnfolderBase]: For 3201/3201 co-relation queries the response was YES. [2023-08-27 00:33:52,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561583 conditions, 281404 events. 222349/281404 cut-off events. For 3201/3201 co-relation queries the response was YES. Maximal size of possible extension queue 13697. Compared 1639494 event pairs, 194005 based on Foata normal form. 0/112874 useless extension candidates. Maximal degree in co-relation 561578. Up to 274192 conditions per place. [2023-08-27 00:33:53,211 INFO L140 encePairwiseOnDemand]: 715/720 looper letters, 71 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2023-08-27 00:33:53,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 106 transitions, 431 flow [2023-08-27 00:33:53,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:33:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:33:53,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1949 transitions. [2023-08-27 00:33:53,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3867063492063492 [2023-08-27 00:33:53,217 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1949 transitions. [2023-08-27 00:33:53,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1949 transitions. [2023-08-27 00:33:53,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:53,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1949 transitions. [2023-08-27 00:33:53,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 278.42857142857144) internal successors, (1949), 7 states have internal predecessors, (1949), 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 00:33:53,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 720.0) internal successors, (5760), 8 states have internal predecessors, (5760), 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 00:33:53,232 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 720.0) internal successors, (5760), 8 states have internal predecessors, (5760), 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 00:33:53,233 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 227 flow. Second operand 7 states and 1949 transitions. [2023-08-27 00:33:53,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 106 transitions, 431 flow [2023-08-27 00:33:53,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 106 transitions, 426 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 00:33:53,236 INFO L231 Difference]: Finished difference. Result has 105 places, 106 transitions, 306 flow [2023-08-27 00:33:53,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=105, PETRI_TRANSITIONS=106} [2023-08-27 00:33:53,237 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -14 predicate places. [2023-08-27 00:33:53,237 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 106 transitions, 306 flow [2023-08-27 00:33:53,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.14285714285717) internal successors, (1870), 7 states have internal predecessors, (1870), 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 00:33:53,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:53,238 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 00:33:53,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 00:33:53,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:33:53,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 00:33:53,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:53,448 INFO L85 PathProgramCache]: Analyzing trace with hash 64077380, now seen corresponding path program 1 times [2023-08-27 00:33:53,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:53,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392221840] [2023-08-27 00:33:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:53,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:33:53,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:53,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392221840] [2023-08-27 00:33:53,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392221840] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:33:53,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341948114] [2023-08-27 00:33:53,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:53,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:33:53,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:33:53,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:33:53,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 00:33:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:53,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:33:53,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:33:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:33:53,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:33:53,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341948114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:53,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:33:53,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 00:33:53,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534970622] [2023-08-27 00:33:53,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:53,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:33:53,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:53,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:33:53,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:33:53,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 720 [2023-08-27 00:33:53,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 106 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 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 00:33:53,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:53,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 720 [2023-08-27 00:33:53,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:34:15,977 INFO L124 PetriNetUnfolderBase]: 222346/281400 cut-off events. [2023-08-27 00:34:15,978 INFO L125 PetriNetUnfolderBase]: For 3203/3203 co-relation queries the response was YES. [2023-08-27 00:34:16,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561591 conditions, 281400 events. 222346/281400 cut-off events. For 3203/3203 co-relation queries the response was YES. Maximal size of possible extension queue 13697. Compared 1641104 event pairs, 194005 based on Foata normal form. 0/112878 useless extension candidates. Maximal degree in co-relation 561583. Up to 274189 conditions per place. [2023-08-27 00:34:17,510 INFO L140 encePairwiseOnDemand]: 716/720 looper letters, 72 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2023-08-27 00:34:17,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 439 flow [2023-08-27 00:34:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:34:17,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:34:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1408 transitions. [2023-08-27 00:34:17,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39111111111111113 [2023-08-27 00:34:17,515 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1408 transitions. [2023-08-27 00:34:17,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1408 transitions. [2023-08-27 00:34:17,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:34:17,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1408 transitions. [2023-08-27 00:34:17,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.6) internal successors, (1408), 5 states have internal predecessors, (1408), 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 00:34:17,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 720.0) internal successors, (4320), 6 states have internal predecessors, (4320), 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 00:34:17,525 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 720.0) internal successors, (4320), 6 states have internal predecessors, (4320), 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 00:34:17,526 INFO L175 Difference]: Start difference. First operand has 105 places, 106 transitions, 306 flow. Second operand 5 states and 1408 transitions. [2023-08-27 00:34:17,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 439 flow [2023-08-27 00:34:17,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 102 transitions, 418 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 00:34:17,529 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 274 flow [2023-08-27 00:34:17,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=274, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2023-08-27 00:34:17,530 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -13 predicate places. [2023-08-27 00:34:17,530 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 274 flow [2023-08-27 00:34:17,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 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 00:34:17,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:34:17,531 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 00:34:17,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 00:34:17,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-27 00:34:17,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 00:34:17,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:34:17,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1448898676, now seen corresponding path program 2 times [2023-08-27 00:34:17,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:34:17,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66212976] [2023-08-27 00:34:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:34:17,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:34:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:34:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:34:17,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:34:17,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66212976] [2023-08-27 00:34:17,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66212976] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:34:17,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907198529] [2023-08-27 00:34:17,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:34:17,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:34:17,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:34:17,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:34:17,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 00:34:18,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:34:18,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:34:18,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:34:18,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:34:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 00:34:18,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:34:18,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907198529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:34:18,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:34:18,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 00:34:18,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90981658] [2023-08-27 00:34:18,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:34:18,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:34:18,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:34:18,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:34:18,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:34:18,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 720 [2023-08-27 00:34:18,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 102 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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 00:34:18,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:34:18,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 720 [2023-08-27 00:34:18,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:34:40,536 INFO L124 PetriNetUnfolderBase]: 222346/281399 cut-off events. [2023-08-27 00:34:40,536 INFO L125 PetriNetUnfolderBase]: For 3212/3212 co-relation queries the response was YES. [2023-08-27 00:34:41,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561584 conditions, 281399 events. 222346/281399 cut-off events. For 3212/3212 co-relation queries the response was YES. Maximal size of possible extension queue 13697. Compared 1637751 event pairs, 194005 based on Foata normal form. 1/112880 useless extension candidates. Maximal degree in co-relation 561575. Up to 274194 conditions per place. [2023-08-27 00:34:42,324 INFO L140 encePairwiseOnDemand]: 718/720 looper letters, 78 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2023-08-27 00:34:42,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 422 flow [2023-08-27 00:34:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:34:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:34:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2023-08-27 00:34:42,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2023-08-27 00:34:42,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2023-08-27 00:34:42,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2023-08-27 00:34:42,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:34:42,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2023-08-27 00:34:42,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 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 00:34:42,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 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 00:34:42,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 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 00:34:42,334 INFO L175 Difference]: Start difference. First operand has 106 places, 102 transitions, 274 flow. Second operand 3 states and 873 transitions. [2023-08-27 00:34:42,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 422 flow [2023-08-27 00:34:42,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 394 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-27 00:34:42,336 INFO L231 Difference]: Finished difference. Result has 100 places, 101 transitions, 238 flow [2023-08-27 00:34:42,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=100, PETRI_TRANSITIONS=101} [2023-08-27 00:34:42,337 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -19 predicate places. [2023-08-27 00:34:42,337 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 101 transitions, 238 flow [2023-08-27 00:34:42,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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 00:34:42,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:34:42,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:34:42,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 00:34:42,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:34:42,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 00:34:42,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:34:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1479602882, now seen corresponding path program 1 times [2023-08-27 00:34:42,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:34:42,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912909965] [2023-08-27 00:34:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:34:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:34:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:34:42,779 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 00:34:42,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:34:42,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912909965] [2023-08-27 00:34:42,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912909965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:34:42,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:34:42,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:34:42,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540840287] [2023-08-27 00:34:42,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:34:42,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:34:42,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:34:42,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:34:42,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:34:42,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 720 [2023-08-27 00:34:42,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 245.25) internal successors, (981), 4 states have internal predecessors, (981), 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 00:34:42,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:34:42,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 720 [2023-08-27 00:34:42,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:05,783 INFO L124 PetriNetUnfolderBase]: 240478/309595 cut-off events. [2023-08-27 00:35:05,784 INFO L125 PetriNetUnfolderBase]: For 4195/4195 co-relation queries the response was YES. [2023-08-27 00:35:06,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614316 conditions, 309595 events. 240478/309595 cut-off events. For 4195/4195 co-relation queries the response was YES. Maximal size of possible extension queue 14388. Compared 1909154 event pairs, 209764 based on Foata normal form. 194/133570 useless extension candidates. Maximal degree in co-relation 614311. Up to 274193 conditions per place. [2023-08-27 00:35:07,460 INFO L140 encePairwiseOnDemand]: 698/720 looper letters, 118 selfloop transitions, 3 changer transitions 2/145 dead transitions. [2023-08-27 00:35:07,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 145 transitions, 586 flow [2023-08-27 00:35:07,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:35:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:35:07,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1112 transitions. [2023-08-27 00:35:07,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2023-08-27 00:35:07,463 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1112 transitions. [2023-08-27 00:35:07,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1112 transitions. [2023-08-27 00:35:07,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:07,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1112 transitions. [2023-08-27 00:35:07,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 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 00:35:07,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 720.0) internal successors, (3600), 5 states have internal predecessors, (3600), 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 00:35:07,471 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 720.0) internal successors, (3600), 5 states have internal predecessors, (3600), 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 00:35:07,471 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 238 flow. Second operand 4 states and 1112 transitions. [2023-08-27 00:35:07,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 145 transitions, 586 flow [2023-08-27 00:35:07,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 145 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:07,474 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 282 flow [2023-08-27 00:35:07,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2023-08-27 00:35:07,475 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -16 predicate places. [2023-08-27 00:35:07,475 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 282 flow [2023-08-27 00:35:07,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.25) internal successors, (981), 4 states have internal predecessors, (981), 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 00:35:07,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:07,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:07,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 00:35:07,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 00:35:07,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:07,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1131885074, now seen corresponding path program 1 times [2023-08-27 00:35:07,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:07,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450778628] [2023-08-27 00:35:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:07,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:35:07,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450778628] [2023-08-27 00:35:07,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450778628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:07,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:07,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:07,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113129674] [2023-08-27 00:35:07,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:07,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:07,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:07,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 720 [2023-08-27 00:35:07,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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 00:35:07,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:07,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 720 [2023-08-27 00:35:07,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:28,630 INFO L124 PetriNetUnfolderBase]: 214398/272743 cut-off events. [2023-08-27 00:35:28,630 INFO L125 PetriNetUnfolderBase]: For 14392/14392 co-relation queries the response was YES. [2023-08-27 00:35:29,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614461 conditions, 272743 events. 214398/272743 cut-off events. For 14392/14392 co-relation queries the response was YES. Maximal size of possible extension queue 12613. Compared 1610028 event pairs, 186000 based on Foata normal form. 0/126002 useless extension candidates. Maximal degree in co-relation 614455. Up to 265281 conditions per place. [2023-08-27 00:35:30,201 INFO L140 encePairwiseOnDemand]: 717/720 looper letters, 76 selfloop transitions, 1 changer transitions 0/99 dead transitions. [2023-08-27 00:35:30,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 428 flow [2023-08-27 00:35:30,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:30,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2023-08-27 00:35:30,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40925925925925927 [2023-08-27 00:35:30,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2023-08-27 00:35:30,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2023-08-27 00:35:30,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:30,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2023-08-27 00:35:30,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 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 00:35:30,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 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 00:35:30,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 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 00:35:30,210 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 282 flow. Second operand 3 states and 884 transitions. [2023-08-27 00:35:30,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 428 flow [2023-08-27 00:35:30,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 423 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:30,246 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 271 flow [2023-08-27 00:35:30,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2023-08-27 00:35:30,247 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -18 predicate places. [2023-08-27 00:35:30,247 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 271 flow [2023-08-27 00:35:30,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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 00:35:30,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:30,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:30,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 00:35:30,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 00:35:30,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1131885070, now seen corresponding path program 1 times [2023-08-27 00:35:30,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:30,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061298674] [2023-08-27 00:35:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:30,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:30,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:30,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061298674] [2023-08-27 00:35:30,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061298674] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:30,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710807072] [2023-08-27 00:35:30,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:30,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:30,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:30,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:30,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 00:35:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:30,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 00:35:30,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:30,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:30,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710807072] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:30,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:30,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-27 00:35:30,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112522457] [2023-08-27 00:35:30,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:30,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 00:35:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:30,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 00:35:30,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-27 00:35:30,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 720 [2023-08-27 00:35:30,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 271 flow. Second operand has 11 states, 11 states have (on average 245.63636363636363) internal successors, (2702), 11 states have internal predecessors, (2702), 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 00:35:30,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:30,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 720 [2023-08-27 00:35:30,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:55,268 INFO L124 PetriNetUnfolderBase]: 228452/294099 cut-off events. [2023-08-27 00:35:55,268 INFO L125 PetriNetUnfolderBase]: For 18715/18715 co-relation queries the response was YES. [2023-08-27 00:35:55,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655854 conditions, 294099 events. 228452/294099 cut-off events. For 18715/18715 co-relation queries the response was YES. Maximal size of possible extension queue 12858. Compared 1818075 event pairs, 152613 based on Foata normal form. 2816/143819 useless extension candidates. Maximal degree in co-relation 655848. Up to 179523 conditions per place. [2023-08-27 00:35:56,822 INFO L140 encePairwiseOnDemand]: 694/720 looper letters, 193 selfloop transitions, 21 changer transitions 0/236 dead transitions. [2023-08-27 00:35:56,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 236 transitions, 1045 flow [2023-08-27 00:35:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:35:56,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:35:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2178 transitions. [2023-08-27 00:35:56,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2023-08-27 00:35:56,930 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2178 transitions. [2023-08-27 00:35:56,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2178 transitions. [2023-08-27 00:35:56,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:56,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2178 transitions. [2023-08-27 00:35:56,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.25) internal successors, (2178), 8 states have internal predecessors, (2178), 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 00:35:56,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 720.0) internal successors, (6480), 9 states have internal predecessors, (6480), 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 00:35:56,940 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 720.0) internal successors, (6480), 9 states have internal predecessors, (6480), 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 00:35:56,940 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 271 flow. Second operand 8 states and 2178 transitions. [2023-08-27 00:35:56,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 236 transitions, 1045 flow [2023-08-27 00:35:56,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 236 transitions, 1044 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:56,964 INFO L231 Difference]: Finished difference. Result has 108 places, 114 transitions, 402 flow [2023-08-27 00:35:56,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=402, PETRI_PLACES=108, PETRI_TRANSITIONS=114} [2023-08-27 00:35:56,965 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -11 predicate places. [2023-08-27 00:35:56,965 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 114 transitions, 402 flow [2023-08-27 00:35:56,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 245.63636363636363) internal successors, (2702), 11 states have internal predecessors, (2702), 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 00:35:56,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:56,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:56,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:57,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:57,173 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 00:35:57,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:57,173 INFO L85 PathProgramCache]: Analyzing trace with hash 483632990, now seen corresponding path program 1 times [2023-08-27 00:35:57,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:57,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045468264] [2023-08-27 00:35:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:57,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:57,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:57,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045468264] [2023-08-27 00:35:57,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045468264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:57,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129578684] [2023-08-27 00:35:57,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:57,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:57,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:57,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:57,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 00:35:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:57,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 00:35:57,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:57,947 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 00:35:58,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:35:58,003 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 00:35:58,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:35:58,085 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 00:35:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:58,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:58,590 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork1_~#t2~0#1.base_25| Int)) (or (forall ((v_ArrVal_225 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork1_~#t2~0#1.base_25| v_ArrVal_225) c_~x~0.base) (+ c_~x~0.offset 4 (* c_~i1~0 4))) 9223372039002259456))) (<= |v_thread1Thread1of1ForFork1_~#t2~0#1.base_25| |c_#StackHeapBarrier|))) is different from false [2023-08-27 00:35:58,669 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:58,669 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 00:35:58,684 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:58,684 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 00:35:58,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 00:35:58,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-08-27 00:35:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:58,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129578684] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:58,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:58,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 00:35:58,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930516268] [2023-08-27 00:35:58,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:58,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 00:35:58,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:58,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 00:35:58,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=4, NotChecked=34, Total=380 [2023-08-27 00:35:58,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 720 [2023-08-27 00:35:58,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 114 transitions, 402 flow. Second operand has 20 states, 20 states have (on average 215.5) internal successors, (4310), 20 states have internal predecessors, (4310), 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 00:35:58,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:58,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 720 [2023-08-27 00:35:58,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand