/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 07:49:46,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 07:49:46,671 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 07:49:46,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 07:49:46,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 07:49:46,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 07:49:46,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 07:49:46,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 07:49:46,722 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 07:49:46,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 07:49:46,723 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 07:49:46,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 07:49:46,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 07:49:46,724 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 07:49:46,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 07:49:46,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 07:49:46,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 07:49:46,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 07:49:46,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 07:49:46,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 07:49:46,726 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 07:49:46,732 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 07:49:46,732 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 07:49:46,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 07:49:46,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 07:49:46,734 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 07:49:46,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 07:49:46,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:49:46,735 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 07:49:46,735 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 07:49:46,735 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 07:49:46,736 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 07:49:46,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 07:49:46,736 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 07:49:46,736 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 07:49:46,737 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 07:49:47,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 07:49:47,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 07:49:47,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 07:49:47,114 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 07:49:47,114 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 07:49:47,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-08-27 07:49:48,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 07:49:48,639 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 07:49:48,640 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-08-27 07:49:48,651 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396940c13/33616438c65646d1b90d2cf64a2de24b/FLAG0d04e5f8c [2023-08-27 07:49:48,666 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396940c13/33616438c65646d1b90d2cf64a2de24b [2023-08-27 07:49:48,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 07:49:48,674 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 07:49:48,677 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 07:49:48,677 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 07:49:48,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 07:49:48,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:48,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8dd58e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48, skipping insertion in model container [2023-08-27 07:49:48,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:48,712 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 07:49:48,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:49:48,897 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 07:49:48,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:49:48,936 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:49:48,936 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:49:48,942 INFO L206 MainTranslator]: Completed translation [2023-08-27 07:49:48,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48 WrapperNode [2023-08-27 07:49:48,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 07:49:48,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 07:49:48,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 07:49:48,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 07:49:48,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:48,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:48,992 INFO L138 Inliner]: procedures = 27, calls = 77, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 361 [2023-08-27 07:49:48,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 07:49:48,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 07:49:48,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 07:49:48,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 07:49:49,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:49,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:49,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:49,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:49,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:49,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:49,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:49,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:49,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 07:49:49,053 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 07:49:49,053 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 07:49:49,053 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 07:49:49,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48" (1/1) ... [2023-08-27 07:49:49,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:49:49,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:49:49,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 07:49:49,105 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 07:49:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 07:49:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 07:49:49,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 07:49:49,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 07:49:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 07:49:49,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 07:49:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 07:49:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 07:49:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 07:49:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 07:49:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 07:49:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 07:49:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 07:49:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 07:49:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 07:49:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 07:49:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 07:49:49,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 07:49:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 07:49:49,132 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 07:49:49,270 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 07:49:49,272 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 07:49:49,757 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 07:49:50,172 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 07:49:50,173 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 07:49:50,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:49:50 BoogieIcfgContainer [2023-08-27 07:49:50,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 07:49:50,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 07:49:50,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 07:49:50,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 07:49:50,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:49:48" (1/3) ... [2023-08-27 07:49:50,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1c4d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:49:50, skipping insertion in model container [2023-08-27 07:49:50,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:49:48" (2/3) ... [2023-08-27 07:49:50,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1c4d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:49:50, skipping insertion in model container [2023-08-27 07:49:50,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:49:50" (3/3) ... [2023-08-27 07:49:50,185 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2023-08-27 07:49:50,201 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 07:49:50,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-08-27 07:49:50,202 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 07:49:50,371 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 07:49:50,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 257 transitions, 546 flow [2023-08-27 07:49:50,546 INFO L124 PetriNetUnfolderBase]: 18/253 cut-off events. [2023-08-27 07:49:50,547 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 07:49:50,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 253 events. 18/253 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 303 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 207. Up to 2 conditions per place. [2023-08-27 07:49:50,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 257 transitions, 546 flow [2023-08-27 07:49:50,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 240 transitions, 504 flow [2023-08-27 07:49:50,566 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 07:49:50,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 240 transitions, 504 flow [2023-08-27 07:49:50,581 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 240 transitions, 504 flow [2023-08-27 07:49:50,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 240 transitions, 504 flow [2023-08-27 07:49:50,644 INFO L124 PetriNetUnfolderBase]: 18/240 cut-off events. [2023-08-27 07:49:50,645 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 07:49:50,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 240 events. 18/240 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 300 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 207. Up to 2 conditions per place. [2023-08-27 07:49:50,651 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-08-27 07:50:06,014 INFO L134 LiptonReduction]: Checked pairs total: 7751 [2023-08-27 07:50:06,015 INFO L136 LiptonReduction]: Total number of compositions: 240 [2023-08-27 07:50:06,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 07:50:06,031 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;@7d4c71ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 07:50:06,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-27 07:50:06,033 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 07:50:06,033 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 07:50:06,033 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:50:06,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:06,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 07:50:06,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:50:06,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:06,038 INFO L85 PathProgramCache]: Analyzing trace with hash 43775, now seen corresponding path program 1 times [2023-08-27 07:50:06,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:06,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035360055] [2023-08-27 07:50:06,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:06,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:50:06,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:06,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035360055] [2023-08-27 07:50:06,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035360055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:50:06,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:50:06,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:50:06,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768343033] [2023-08-27 07:50:06,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:50:06,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:50:06,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:06,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:50:06,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:50:06,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 497 [2023-08-27 07:50:06,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:06,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:06,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 497 [2023-08-27 07:50:06,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:11,034 INFO L124 PetriNetUnfolderBase]: 36524/45149 cut-off events. [2023-08-27 07:50:11,034 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2023-08-27 07:50:11,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90909 conditions, 45149 events. 36524/45149 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240304 event pairs, 23250 based on Foata normal form. 0/12191 useless extension candidates. Maximal degree in co-relation 80304. Up to 44289 conditions per place. [2023-08-27 07:50:11,503 INFO L140 encePairwiseOnDemand]: 480/497 looper letters, 50 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-08-27 07:50:11,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 256 flow [2023-08-27 07:50:11,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:50:11,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:50:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2023-08-27 07:50:11,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4272300469483568 [2023-08-27 07:50:11,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 637 transitions. [2023-08-27 07:50:11,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 637 transitions. [2023-08-27 07:50:11,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:11,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 637 transitions. [2023-08-27 07:50:11,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:11,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:11,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:11,534 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 154 flow. Second operand 3 states and 637 transitions. [2023-08-27 07:50:11,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 256 flow [2023-08-27 07:50:11,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 240 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 07:50:11,790 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 166 flow [2023-08-27 07:50:11,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-08-27 07:50:11,794 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2023-08-27 07:50:11,794 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 166 flow [2023-08-27 07:50:11,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:11,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:11,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:50:11,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 07:50:11,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:50:11,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:11,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1359105, now seen corresponding path program 1 times [2023-08-27 07:50:11,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:11,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541810427] [2023-08-27 07:50:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:11,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:11,865 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 07:50:11,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541810427] [2023-08-27 07:50:11,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541810427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:50:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566588882] [2023-08-27 07:50:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:11,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:11,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:50:11,869 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 07:50:11,882 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 07:50:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:12,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:50:12,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:50:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:50:12,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:50:12,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566588882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:50:12,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:50:12,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 07:50:12,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876254677] [2023-08-27 07:50:12,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:50:12,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:50:12,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:12,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:50:12,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:50:12,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 497 [2023-08-27 07:50:12,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:12,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:12,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 497 [2023-08-27 07:50:12,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:15,704 INFO L124 PetriNetUnfolderBase]: 36524/45147 cut-off events. [2023-08-27 07:50:15,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:50:15,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89895 conditions, 45147 events. 36524/45147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240260 event pairs, 23250 based on Foata normal form. 0/12193 useless extension candidates. Maximal degree in co-relation 89853. Up to 44281 conditions per place. [2023-08-27 07:50:15,959 INFO L140 encePairwiseOnDemand]: 490/497 looper letters, 47 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-08-27 07:50:15,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 264 flow [2023-08-27 07:50:15,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:50:15,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:50:15,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 815 transitions. [2023-08-27 07:50:15,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40995975855130784 [2023-08-27 07:50:15,966 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 815 transitions. [2023-08-27 07:50:15,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 815 transitions. [2023-08-27 07:50:15,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:15,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 815 transitions. [2023-08-27 07:50:15,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.75) internal successors, (815), 4 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:15,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:15,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:15,974 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 166 flow. Second operand 4 states and 815 transitions. [2023-08-27 07:50:15,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 264 flow [2023-08-27 07:50:15,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:50:15,976 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 160 flow [2023-08-27 07:50:15,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-08-27 07:50:15,977 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2023-08-27 07:50:15,977 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 160 flow [2023-08-27 07:50:15,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:15,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:15,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:50:15,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 07:50:16,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:16,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:50:16,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:16,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1359104, now seen corresponding path program 1 times [2023-08-27 07:50:16,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:16,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183809201] [2023-08-27 07:50:16,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:16,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:16,282 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 07:50:16,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:16,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183809201] [2023-08-27 07:50:16,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183809201] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:50:16,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686363646] [2023-08-27 07:50:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:16,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:16,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:50:16,285 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 07:50:16,312 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 07:50:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:16,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:50:16,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:50:16,438 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 07:50:16,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:50:16,457 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 07:50:16,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686363646] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:50:16,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:50:16,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 07:50:16,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332309410] [2023-08-27 07:50:16,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:50:16,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:50:16,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:16,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:50:16,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:50:16,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 497 [2023-08-27 07:50:16,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 191.14285714285714) internal successors, (1338), 7 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:16,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:16,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 497 [2023-08-27 07:50:16,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:20,284 INFO L124 PetriNetUnfolderBase]: 36530/45159 cut-off events. [2023-08-27 07:50:20,284 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:50:20,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89938 conditions, 45159 events. 36530/45159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240686 event pairs, 23250 based on Foata normal form. 0/12206 useless extension candidates. Maximal degree in co-relation 89853. Up to 44290 conditions per place. [2023-08-27 07:50:20,527 INFO L140 encePairwiseOnDemand]: 490/497 looper letters, 48 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2023-08-27 07:50:20,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 350 flow [2023-08-27 07:50:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:50:20,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:50:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2023-08-27 07:50:20,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061032863849765 [2023-08-27 07:50:20,532 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2023-08-27 07:50:20,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2023-08-27 07:50:20,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:20,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2023-08-27 07:50:20,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:20,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:20,542 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:20,542 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 160 flow. Second operand 6 states and 1211 transitions. [2023-08-27 07:50:20,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 350 flow [2023-08-27 07:50:20,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:50:20,544 INFO L231 Difference]: Finished difference. Result has 65 places, 71 transitions, 276 flow [2023-08-27 07:50:20,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=65, PETRI_TRANSITIONS=71} [2023-08-27 07:50:20,545 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-08-27 07:50:20,546 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 71 transitions, 276 flow [2023-08-27 07:50:20,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 191.14285714285714) internal successors, (1338), 7 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:20,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:20,547 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 07:50:20,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 07:50:20,752 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,SelfDestructingSolverStorable2 [2023-08-27 07:50:20,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:50:20,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:20,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1836456830, now seen corresponding path program 2 times [2023-08-27 07:50:20,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:20,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824344893] [2023-08-27 07:50:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:20,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:20,909 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 07:50:20,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:20,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824344893] [2023-08-27 07:50:20,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824344893] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:50:20,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450003733] [2023-08-27 07:50:20,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:50:20,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:20,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:50:20,911 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 07:50:20,923 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 07:50:21,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 07:50:21,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:50:21,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:50:21,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:50:21,069 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 07:50:21,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:50:21,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450003733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:50:21,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:50:21,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 07:50:21,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123392769] [2023-08-27 07:50:21,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:50:21,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:50:21,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:21,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:50:21,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 07:50:21,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 497 [2023-08-27 07:50:21,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 71 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:21,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:21,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 497 [2023-08-27 07:50:21,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:24,862 INFO L124 PetriNetUnfolderBase]: 36530/45158 cut-off events. [2023-08-27 07:50:24,862 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 07:50:24,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89963 conditions, 45158 events. 36530/45158 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240596 event pairs, 23250 based on Foata normal form. 1/12209 useless extension candidates. Maximal degree in co-relation 89904. Up to 44295 conditions per place. [2023-08-27 07:50:25,109 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 58 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2023-08-27 07:50:25,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 394 flow [2023-08-27 07:50:25,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:50:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:50:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 625 transitions. [2023-08-27 07:50:25,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41918175720992623 [2023-08-27 07:50:25,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 625 transitions. [2023-08-27 07:50:25,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 625 transitions. [2023-08-27 07:50:25,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:25,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 625 transitions. [2023-08-27 07:50:25,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:25,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:25,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:25,119 INFO L175 Difference]: Start difference. First operand has 65 places, 71 transitions, 276 flow. Second operand 3 states and 625 transitions. [2023-08-27 07:50:25,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 394 flow [2023-08-27 07:50:25,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 368 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 07:50:25,122 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 252 flow [2023-08-27 07:50:25,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2023-08-27 07:50:25,123 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-08-27 07:50:25,123 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 252 flow [2023-08-27 07:50:25,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:25,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:25,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 07:50:25,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 07:50:25,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:25,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:50:25,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1842801519, now seen corresponding path program 1 times [2023-08-27 07:50:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:25,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617684059] [2023-08-27 07:50:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:25,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:50:25,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:25,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617684059] [2023-08-27 07:50:25,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617684059] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:50:25,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:50:25,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:50:25,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225978744] [2023-08-27 07:50:25,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:50:25,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:50:25,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:25,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:50:25,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:50:25,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 497 [2023-08-27 07:50:25,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:25,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:25,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 497 [2023-08-27 07:50:25,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:29,631 INFO L124 PetriNetUnfolderBase]: 39254/48860 cut-off events. [2023-08-27 07:50:29,632 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-27 07:50:29,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97342 conditions, 48860 events. 39254/48860 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4497. Compared 266189 event pairs, 25199 based on Foata normal form. 0/14055 useless extension candidates. Maximal degree in co-relation 97261. Up to 44286 conditions per place. [2023-08-27 07:50:29,894 INFO L140 encePairwiseOnDemand]: 482/497 looper letters, 102 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2023-08-27 07:50:29,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 608 flow [2023-08-27 07:50:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:50:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:50:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 992 transitions. [2023-08-27 07:50:29,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991951710261569 [2023-08-27 07:50:29,897 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 992 transitions. [2023-08-27 07:50:29,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 992 transitions. [2023-08-27 07:50:29,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:29,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 992 transitions. [2023-08-27 07:50:29,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.4) internal successors, (992), 5 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:29,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:29,904 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:29,904 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 252 flow. Second operand 5 states and 992 transitions. [2023-08-27 07:50:29,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 608 flow [2023-08-27 07:50:29,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 596 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:50:29,907 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 291 flow [2023-08-27 07:50:29,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2023-08-27 07:50:29,908 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-27 07:50:29,908 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 291 flow [2023-08-27 07:50:29,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:29,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:29,909 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 07:50:29,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 07:50:29,909 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:50:29,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1294084438, now seen corresponding path program 1 times [2023-08-27 07:50:29,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:29,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300594289] [2023-08-27 07:50:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:29,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:30,009 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 07:50:30,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:30,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300594289] [2023-08-27 07:50:30,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300594289] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:50:30,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407914843] [2023-08-27 07:50:30,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:30,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:30,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:50:30,012 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 07:50:30,014 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 07:50:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:30,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 07:50:30,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:50:30,182 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 07:50:30,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:50:30,231 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 07:50:30,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407914843] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:50:30,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:50:30,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 07:50:30,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531126573] [2023-08-27 07:50:30,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:50:30,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 07:50:30,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:30,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 07:50:30,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 07:50:30,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 497 [2023-08-27 07:50:30,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 291 flow. Second operand has 13 states, 13 states have (on average 191.15384615384616) internal successors, (2485), 13 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:30,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:30,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 497 [2023-08-27 07:50:30,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:34,390 INFO L124 PetriNetUnfolderBase]: 39278/48896 cut-off events. [2023-08-27 07:50:34,390 INFO L125 PetriNetUnfolderBase]: For 3302/3302 co-relation queries the response was YES. [2023-08-27 07:50:34,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112898 conditions, 48896 events. 39278/48896 cut-off events. For 3302/3302 co-relation queries the response was YES. Maximal size of possible extension queue 4349. Compared 267786 event pairs, 25200 based on Foata normal form. 12/17348 useless extension candidates. Maximal degree in co-relation 112679. Up to 47919 conditions per place. [2023-08-27 07:50:34,667 INFO L140 encePairwiseOnDemand]: 491/497 looper letters, 47 selfloop transitions, 43 changer transitions 0/96 dead transitions. [2023-08-27 07:50:34,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 621 flow [2023-08-27 07:50:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 07:50:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 07:50:34,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2374 transitions. [2023-08-27 07:50:34,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3980549966465459 [2023-08-27 07:50:34,673 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2374 transitions. [2023-08-27 07:50:34,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2374 transitions. [2023-08-27 07:50:34,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:34,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2374 transitions. [2023-08-27 07:50:34,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 197.83333333333334) internal successors, (2374), 12 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:34,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:34,687 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:34,687 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 291 flow. Second operand 12 states and 2374 transitions. [2023-08-27 07:50:34,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 621 flow [2023-08-27 07:50:34,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 96 transitions, 613 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 07:50:34,692 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 573 flow [2023-08-27 07:50:34,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=573, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2023-08-27 07:50:34,693 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2023-08-27 07:50:34,693 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 573 flow [2023-08-27 07:50:34,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 191.15384615384616) internal successors, (2485), 13 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:34,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:34,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:50:34,703 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 07:50:34,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:34,900 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:50:34,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:34,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1101933682, now seen corresponding path program 1 times [2023-08-27 07:50:34,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:34,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682355370] [2023-08-27 07:50:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:34,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:34,962 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 07:50:34,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:34,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682355370] [2023-08-27 07:50:34,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682355370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:50:34,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:50:34,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:50:34,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192806314] [2023-08-27 07:50:34,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:50:34,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:50:34,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:50:34,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:50:34,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 497 [2023-08-27 07:50:34,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 573 flow. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:34,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:34,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 497 [2023-08-27 07:50:34,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:41,871 INFO L124 PetriNetUnfolderBase]: 62974/79377 cut-off events. [2023-08-27 07:50:41,871 INFO L125 PetriNetUnfolderBase]: For 1851/1851 co-relation queries the response was YES. [2023-08-27 07:50:42,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177013 conditions, 79377 events. 62974/79377 cut-off events. For 1851/1851 co-relation queries the response was YES. Maximal size of possible extension queue 6682. Compared 476898 event pairs, 22563 based on Foata normal form. 0/31460 useless extension candidates. Maximal degree in co-relation 176891. Up to 40348 conditions per place. [2023-08-27 07:50:42,379 INFO L140 encePairwiseOnDemand]: 493/497 looper letters, 132 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2023-08-27 07:50:42,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 137 transitions, 946 flow [2023-08-27 07:50:42,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:50:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:50:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2023-08-27 07:50:42,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674714956405097 [2023-08-27 07:50:42,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2023-08-27 07:50:42,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2023-08-27 07:50:42,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:42,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2023-08-27 07:50:42,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:42,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:42,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:42,385 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 573 flow. Second operand 3 states and 697 transitions. [2023-08-27 07:50:42,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 137 transitions, 946 flow [2023-08-27 07:50:42,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 137 transitions, 818 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-27 07:50:42,395 INFO L231 Difference]: Finished difference. Result has 83 places, 97 transitions, 461 flow [2023-08-27 07:50:42,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=83, PETRI_TRANSITIONS=97} [2023-08-27 07:50:42,396 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2023-08-27 07:50:42,396 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 97 transitions, 461 flow [2023-08-27 07:50:42,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:42,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:42,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:50:42,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 07:50:42,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:50:42,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:42,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1101933681, now seen corresponding path program 1 times [2023-08-27 07:50:42,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:42,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254969896] [2023-08-27 07:50:42,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:42,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:42,517 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 07:50:42,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:42,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254969896] [2023-08-27 07:50:42,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254969896] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:50:42,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855055404] [2023-08-27 07:50:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:42,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:42,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:50:42,519 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 07:50:42,565 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 07:50:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:42,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:50:42,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:50:42,696 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 07:50:42,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:50:42,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855055404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:50:42,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:50:42,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 07:50:42,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030902942] [2023-08-27 07:50:42,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:50:42,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:50:42,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:42,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:50:42,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:50:42,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 497 [2023-08-27 07:50:42,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:42,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:42,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 497 [2023-08-27 07:50:42,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:46,408 INFO L124 PetriNetUnfolderBase]: 33860/43435 cut-off events. [2023-08-27 07:50:46,408 INFO L125 PetriNetUnfolderBase]: For 9225/9281 co-relation queries the response was YES. [2023-08-27 07:50:46,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101661 conditions, 43435 events. 33860/43435 cut-off events. For 9225/9281 co-relation queries the response was YES. Maximal size of possible extension queue 3600. Compared 257004 event pairs, 24737 based on Foata normal form. 2049/19369 useless extension candidates. Maximal degree in co-relation 101561. Up to 42622 conditions per place. [2023-08-27 07:50:46,720 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 88 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2023-08-27 07:50:46,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 95 transitions, 631 flow [2023-08-27 07:50:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:50:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:50:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2023-08-27 07:50:46,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44064386317907445 [2023-08-27 07:50:46,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2023-08-27 07:50:46,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2023-08-27 07:50:46,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:46,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2023-08-27 07:50:46,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:46,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:46,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:46,726 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 461 flow. Second operand 3 states and 657 transitions. [2023-08-27 07:50:46,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 95 transitions, 631 flow [2023-08-27 07:50:46,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 95 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:50:46,733 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 453 flow [2023-08-27 07:50:46,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=453, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2023-08-27 07:50:46,735 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2023-08-27 07:50:46,735 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 453 flow [2023-08-27 07:50:46,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:46,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:46,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:50:46,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 07:50:46,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:46,937 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:50:46,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:46,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1413687870, now seen corresponding path program 1 times [2023-08-27 07:50:46,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:46,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751435437] [2023-08-27 07:50:46,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:46,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:50:47,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:47,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751435437] [2023-08-27 07:50:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751435437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:50:47,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:50:47,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:50:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848165012] [2023-08-27 07:50:47,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:50:47,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:50:47,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:47,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:50:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:50:47,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 497 [2023-08-27 07:50:47,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:47,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:47,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 497 [2023-08-27 07:50:47,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:51,158 INFO L124 PetriNetUnfolderBase]: 35505/46009 cut-off events. [2023-08-27 07:50:51,158 INFO L125 PetriNetUnfolderBase]: For 7805/7821 co-relation queries the response was YES. [2023-08-27 07:50:51,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106973 conditions, 46009 events. 35505/46009 cut-off events. For 7805/7821 co-relation queries the response was YES. Maximal size of possible extension queue 3753. Compared 279534 event pairs, 26288 based on Foata normal form. 0/19406 useless extension candidates. Maximal degree in co-relation 106950. Up to 42602 conditions per place. [2023-08-27 07:50:51,448 INFO L140 encePairwiseOnDemand]: 482/497 looper letters, 103 selfloop transitions, 15 changer transitions 0/124 dead transitions. [2023-08-27 07:50:51,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 781 flow [2023-08-27 07:50:51,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:50:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:50:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 804 transitions. [2023-08-27 07:50:51,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4044265593561368 [2023-08-27 07:50:51,450 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 804 transitions. [2023-08-27 07:50:51,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 804 transitions. [2023-08-27 07:50:51,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:51,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 804 transitions. [2023-08-27 07:50:51,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 201.0) internal successors, (804), 4 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 07:50:51,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:51,454 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:51,455 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 453 flow. Second operand 4 states and 804 transitions. [2023-08-27 07:50:51,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 781 flow [2023-08-27 07:50:51,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 124 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:50:51,462 INFO L231 Difference]: Finished difference. Result has 85 places, 95 transitions, 508 flow [2023-08-27 07:50:51,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=508, PETRI_PLACES=85, PETRI_TRANSITIONS=95} [2023-08-27 07:50:51,462 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2023-08-27 07:50:51,462 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 95 transitions, 508 flow [2023-08-27 07:50:51,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:51,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:51,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:50:51,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 07:50:51,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:50:51,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:51,464 INFO L85 PathProgramCache]: Analyzing trace with hash -199790924, now seen corresponding path program 1 times [2023-08-27 07:50:51,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:51,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500822523] [2023-08-27 07:50:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:51,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:50:51,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:51,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500822523] [2023-08-27 07:50:51,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500822523] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:50:51,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557727045] [2023-08-27 07:50:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:51,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:51,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:50:51,521 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:50:51,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 07:50:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:51,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:50:51,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:50:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:50:51,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:50:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:50:51,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557727045] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:50:51,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:50:51,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 07:50:51,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856367521] [2023-08-27 07:50:51,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:50:51,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:50:51,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:51,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:50:51,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:50:51,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 497 [2023-08-27 07:50:51,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 95 transitions, 508 flow. Second operand has 7 states, 7 states have (on average 204.28571428571428) internal successors, (1430), 7 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:50:51,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:51,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 497 [2023-08-27 07:50:51,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:02,422 INFO L124 PetriNetUnfolderBase]: 95779/120806 cut-off events. [2023-08-27 07:51:02,423 INFO L125 PetriNetUnfolderBase]: For 12450/12450 co-relation queries the response was YES. [2023-08-27 07:51:03,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330974 conditions, 120806 events. 95779/120806 cut-off events. For 12450/12450 co-relation queries the response was YES. Maximal size of possible extension queue 6563. Compared 737401 event pairs, 17937 based on Foata normal form. 0/62598 useless extension candidates. Maximal degree in co-relation 330950. Up to 48589 conditions per place. [2023-08-27 07:51:03,526 INFO L140 encePairwiseOnDemand]: 493/497 looper letters, 270 selfloop transitions, 9 changer transitions 0/282 dead transitions. [2023-08-27 07:51:03,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 282 transitions, 1665 flow [2023-08-27 07:51:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:51:03,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:51:03,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1647 transitions. [2023-08-27 07:51:03,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734118999712561 [2023-08-27 07:51:03,530 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1647 transitions. [2023-08-27 07:51:03,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1647 transitions. [2023-08-27 07:51:03,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:03,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1647 transitions. [2023-08-27 07:51:03,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:03,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:03,538 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:03,538 INFO L175 Difference]: Start difference. First operand has 85 places, 95 transitions, 508 flow. Second operand 7 states and 1647 transitions. [2023-08-27 07:51:03,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 282 transitions, 1665 flow [2023-08-27 07:51:03,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 282 transitions, 1634 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 07:51:03,587 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 548 flow [2023-08-27 07:51:03,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=548, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2023-08-27 07:51:03,587 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-08-27 07:51:03,588 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 548 flow [2023-08-27 07:51:03,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.28571428571428) internal successors, (1430), 7 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:03,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:03,588 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:03,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 07:51:03,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:03,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:51:03,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:03,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1898548078, now seen corresponding path program 1 times [2023-08-27 07:51:03,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:03,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336047590] [2023-08-27 07:51:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:03,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:51:03,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:03,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336047590] [2023-08-27 07:51:03,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336047590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:03,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:03,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:51:03,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558553726] [2023-08-27 07:51:03,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:03,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:51:03,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:03,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:51:03,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:51:03,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 497 [2023-08-27 07:51:03,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:03,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:03,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 497 [2023-08-27 07:51:03,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:13,500 INFO L124 PetriNetUnfolderBase]: 87061/110936 cut-off events. [2023-08-27 07:51:13,501 INFO L125 PetriNetUnfolderBase]: For 69515/69515 co-relation queries the response was YES. [2023-08-27 07:51:14,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311431 conditions, 110936 events. 87061/110936 cut-off events. For 69515/69515 co-relation queries the response was YES. Maximal size of possible extension queue 6191. Compared 688870 event pairs, 64683 based on Foata normal form. 2544/64212 useless extension candidates. Maximal degree in co-relation 311404. Up to 110496 conditions per place. [2023-08-27 07:51:14,610 INFO L140 encePairwiseOnDemand]: 495/497 looper letters, 93 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-08-27 07:51:14,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 97 transitions, 701 flow [2023-08-27 07:51:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:14,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:14,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2023-08-27 07:51:14,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43729040912139505 [2023-08-27 07:51:14,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2023-08-27 07:51:14,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2023-08-27 07:51:14,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:14,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2023-08-27 07:51:14,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:14,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:14,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:14,617 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 548 flow. Second operand 3 states and 652 transitions. [2023-08-27 07:51:14,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 97 transitions, 701 flow [2023-08-27 07:51:14,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 97 transitions, 693 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 07:51:14,715 INFO L231 Difference]: Finished difference. Result has 91 places, 97 transitions, 507 flow [2023-08-27 07:51:14,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=507, PETRI_PLACES=91, PETRI_TRANSITIONS=97} [2023-08-27 07:51:14,716 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 19 predicate places. [2023-08-27 07:51:14,716 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 97 transitions, 507 flow [2023-08-27 07:51:14,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:14,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:14,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:14,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 07:51:14,717 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:51:14,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:14,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1973528691, now seen corresponding path program 1 times [2023-08-27 07:51:14,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:14,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478042423] [2023-08-27 07:51:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:14,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:14,758 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 07:51:14,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:14,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478042423] [2023-08-27 07:51:14,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478042423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:14,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:14,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:51:14,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015378387] [2023-08-27 07:51:14,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:14,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:51:14,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:14,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:51:14,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:51:14,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 497 [2023-08-27 07:51:14,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 97 transitions, 507 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:14,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:14,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 497 [2023-08-27 07:51:14,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:21,702 INFO L124 PetriNetUnfolderBase]: 58777/76201 cut-off events. [2023-08-27 07:51:21,702 INFO L125 PetriNetUnfolderBase]: For 37243/37267 co-relation queries the response was YES. [2023-08-27 07:51:22,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214416 conditions, 76201 events. 58777/76201 cut-off events. For 37243/37267 co-relation queries the response was YES. Maximal size of possible extension queue 4820. Compared 486834 event pairs, 44876 based on Foata normal form. 0/41819 useless extension candidates. Maximal degree in co-relation 214388. Up to 75147 conditions per place. [2023-08-27 07:51:22,335 INFO L140 encePairwiseOnDemand]: 495/497 looper letters, 89 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2023-08-27 07:51:22,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 96 transitions, 683 flow [2023-08-27 07:51:22,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-08-27 07:51:22,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4386317907444668 [2023-08-27 07:51:22,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-08-27 07:51:22,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-08-27 07:51:22,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:22,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-08-27 07:51:22,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:22,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:22,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:22,340 INFO L175 Difference]: Start difference. First operand has 91 places, 97 transitions, 507 flow. Second operand 3 states and 654 transitions. [2023-08-27 07:51:22,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 96 transitions, 683 flow [2023-08-27 07:51:22,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:51:22,394 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 504 flow [2023-08-27 07:51:22,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2023-08-27 07:51:22,394 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 19 predicate places. [2023-08-27 07:51:22,394 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 504 flow [2023-08-27 07:51:22,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:22,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:22,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:22,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 07:51:22,395 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:51:22,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:22,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1973528687, now seen corresponding path program 1 times [2023-08-27 07:51:22,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:22,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613268206] [2023-08-27 07:51:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:22,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:22,458 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 07:51:22,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:22,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613268206] [2023-08-27 07:51:22,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613268206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:22,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:22,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:51:22,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253154215] [2023-08-27 07:51:22,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:22,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:51:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:51:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:51:22,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 497 [2023-08-27 07:51:22,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:22,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:22,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 497 [2023-08-27 07:51:22,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:28,691 INFO L124 PetriNetUnfolderBase]: 51799/69534 cut-off events. [2023-08-27 07:51:28,691 INFO L125 PetriNetUnfolderBase]: For 44911/44925 co-relation queries the response was YES. [2023-08-27 07:51:29,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190616 conditions, 69534 events. 51799/69534 cut-off events. For 44911/44925 co-relation queries the response was YES. Maximal size of possible extension queue 4673. Compared 475813 event pairs, 46909 based on Foata normal form. 0/45678 useless extension candidates. Maximal degree in co-relation 190587. Up to 69490 conditions per place. [2023-08-27 07:51:29,228 INFO L140 encePairwiseOnDemand]: 495/497 looper letters, 91 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2023-08-27 07:51:29,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 95 transitions, 684 flow [2023-08-27 07:51:29,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:29,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-08-27 07:51:29,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43594902749832326 [2023-08-27 07:51:29,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-08-27 07:51:29,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-08-27 07:51:29,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:29,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-08-27 07:51:29,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:29,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:29,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:29,232 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 504 flow. Second operand 3 states and 650 transitions. [2023-08-27 07:51:29,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 95 transitions, 684 flow [2023-08-27 07:51:29,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 95 transitions, 683 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:51:29,315 INFO L231 Difference]: Finished difference. Result has 91 places, 95 transitions, 501 flow [2023-08-27 07:51:29,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=91, PETRI_TRANSITIONS=95} [2023-08-27 07:51:29,316 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 19 predicate places. [2023-08-27 07:51:29,316 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 95 transitions, 501 flow [2023-08-27 07:51:29,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:29,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:29,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:29,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 07:51:29,316 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:51:29,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1973528688, now seen corresponding path program 1 times [2023-08-27 07:51:29,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:29,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747229248] [2023-08-27 07:51:29,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:29,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:29,408 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 07:51:29,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:29,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747229248] [2023-08-27 07:51:29,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747229248] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:29,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710797597] [2023-08-27 07:51:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:29,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:29,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:29,410 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:29,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 07:51:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:29,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:51:29,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:29,571 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 07:51:29,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:51:29,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710797597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:29,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:51:29,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 07:51:29,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370986247] [2023-08-27 07:51:29,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:29,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:51:29,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:51:29,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:51:29,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 497 [2023-08-27 07:51:29,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 95 transitions, 501 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:29,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:29,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 497 [2023-08-27 07:51:29,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:34,027 INFO L124 PetriNetUnfolderBase]: 37424/49298 cut-off events. [2023-08-27 07:51:34,027 INFO L125 PetriNetUnfolderBase]: For 25562/25580 co-relation queries the response was YES. [2023-08-27 07:51:34,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136726 conditions, 49298 events. 37424/49298 cut-off events. For 25562/25580 co-relation queries the response was YES. Maximal size of possible extension queue 3101. Compared 313011 event pairs, 29063 based on Foata normal form. 0/30736 useless extension candidates. Maximal degree in co-relation 136696. Up to 48504 conditions per place. [2023-08-27 07:51:34,431 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 86 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-08-27 07:51:34,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 667 flow [2023-08-27 07:51:34,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:34,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2023-08-27 07:51:34,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43729040912139505 [2023-08-27 07:51:34,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2023-08-27 07:51:34,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2023-08-27 07:51:34,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:34,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2023-08-27 07:51:34,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:34,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:34,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:34,435 INFO L175 Difference]: Start difference. First operand has 91 places, 95 transitions, 501 flow. Second operand 3 states and 652 transitions. [2023-08-27 07:51:34,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 667 flow [2023-08-27 07:51:34,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 93 transitions, 666 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:51:34,464 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 494 flow [2023-08-27 07:51:34,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2023-08-27 07:51:34,465 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2023-08-27 07:51:34,465 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 494 flow [2023-08-27 07:51:34,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:34,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:34,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:34,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 07:51:34,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:34,666 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:51:34,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:34,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1973528686, now seen corresponding path program 1 times [2023-08-27 07:51:34,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:34,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442652932] [2023-08-27 07:51:34,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:34,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:34,706 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 07:51:34,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:34,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442652932] [2023-08-27 07:51:34,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442652932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:34,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:34,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:51:34,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246791159] [2023-08-27 07:51:34,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:34,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:51:34,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:51:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:51:34,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 497 [2023-08-27 07:51:34,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:34,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:34,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 497 [2023-08-27 07:51:34,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:41,803 INFO L124 PetriNetUnfolderBase]: 61317/82402 cut-off events. [2023-08-27 07:51:41,803 INFO L125 PetriNetUnfolderBase]: For 53957/53971 co-relation queries the response was YES. [2023-08-27 07:51:42,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224572 conditions, 82402 events. 61317/82402 cut-off events. For 53957/53971 co-relation queries the response was YES. Maximal size of possible extension queue 5247. Compared 590493 event pairs, 30363 based on Foata normal form. 0/56788 useless extension candidates. Maximal degree in co-relation 224541. Up to 44166 conditions per place. [2023-08-27 07:51:42,506 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 125 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-27 07:51:42,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 130 transitions, 891 flow [2023-08-27 07:51:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:42,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-08-27 07:51:42,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567404426559356 [2023-08-27 07:51:42,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-08-27 07:51:42,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-08-27 07:51:42,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:42,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-08-27 07:51:42,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:42,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:42,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:42,510 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 494 flow. Second operand 3 states and 681 transitions. [2023-08-27 07:51:42,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 130 transitions, 891 flow [2023-08-27 07:51:42,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 130 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:51:42,557 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 507 flow [2023-08-27 07:51:42,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=507, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2023-08-27 07:51:42,557 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-08-27 07:51:42,557 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 507 flow [2023-08-27 07:51:42,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:42,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:42,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:42,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 07:51:42,558 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:51:42,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:42,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1973528690, now seen corresponding path program 1 times [2023-08-27 07:51:42,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:42,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447366619] [2023-08-27 07:51:42,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:42,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:42,638 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 07:51:42,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:42,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447366619] [2023-08-27 07:51:42,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447366619] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:42,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:42,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:51:42,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368650083] [2023-08-27 07:51:42,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:42,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:51:42,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:42,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:51:42,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:51:42,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 497 [2023-08-27 07:51:42,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 507 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:42,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:42,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 497 [2023-08-27 07:51:42,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:46,946 INFO L124 PetriNetUnfolderBase]: 32815/45242 cut-off events. [2023-08-27 07:51:46,947 INFO L125 PetriNetUnfolderBase]: For 35737/35880 co-relation queries the response was YES. [2023-08-27 07:51:47,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131388 conditions, 45242 events. 32815/45242 cut-off events. For 35737/35880 co-relation queries the response was YES. Maximal size of possible extension queue 2990. Compared 319587 event pairs, 30023 based on Foata normal form. 3674/35136 useless extension candidates. Maximal degree in co-relation 131355. Up to 44531 conditions per place. [2023-08-27 07:51:47,528 INFO L140 encePairwiseOnDemand]: 495/497 looper letters, 75 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2023-08-27 07:51:47,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 93 transitions, 677 flow [2023-08-27 07:51:47,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-08-27 07:51:47,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43594902749832326 [2023-08-27 07:51:47,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-08-27 07:51:47,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-08-27 07:51:47,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:47,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-08-27 07:51:47,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:47,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:47,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:47,533 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 507 flow. Second operand 3 states and 650 transitions. [2023-08-27 07:51:47,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 93 transitions, 677 flow [2023-08-27 07:51:47,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 675 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:51:47,564 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 525 flow [2023-08-27 07:51:47,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=525, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2023-08-27 07:51:47,565 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-08-27 07:51:47,565 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 525 flow [2023-08-27 07:51:47,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:47,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:47,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:47,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 07:51:47,566 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:51:47,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1049844681, now seen corresponding path program 1 times [2023-08-27 07:51:47,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:47,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939099959] [2023-08-27 07:51:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:47,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:51:47,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:47,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939099959] [2023-08-27 07:51:47,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939099959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:47,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559616662] [2023-08-27 07:51:47,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:47,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:47,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:47,622 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:47,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 07:51:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:47,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 07:51:47,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:47,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:51:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:47,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559616662] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:51:47,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:51:47,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 10 [2023-08-27 07:51:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845012783] [2023-08-27 07:51:47,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:51:47,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 07:51:47,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:47,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 07:51:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-27 07:51:47,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 497 [2023-08-27 07:51:47,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 525 flow. Second operand has 11 states, 11 states have (on average 174.27272727272728) internal successors, (1917), 11 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:47,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:47,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 497 [2023-08-27 07:51:47,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand