/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 PROGRAM_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/pthread-wmm/safe030_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 10:19:48,707 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 10:19:48,784 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 10:19:48,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 10:19:48,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 10:19:48,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 10:19:48,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 10:19:48,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 10:19:48,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 10:19:48,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 10:19:48,834 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 10:19:48,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 10:19:48,835 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 10:19:48,836 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 10:19:48,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 10:19:48,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 10:19:48,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 10:19:48,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 10:19:48,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 10:19:48,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 10:19:48,837 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 10:19:48,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 10:19:48,838 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 10:19:48,839 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 10:19:48,839 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 10:19:48,839 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 10:19:48,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 10:19:48,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:19:48,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 10:19:48,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 10:19:48,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 10:19:48,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 10:19:48,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 10:19:48,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 10:19:48,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 10:19:48,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 10:19:49,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 10:19:49,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 10:19:49,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 10:19:49,181 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 10:19:49,181 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 10:19:49,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.i [2023-08-27 10:19:50,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 10:19:50,665 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 10:19:50,665 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.i [2023-08-27 10:19:50,691 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bd53e098/5de32d61c20c4e39a5b53b1a4d0133ea/FLAG78157d26e [2023-08-27 10:19:50,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bd53e098/5de32d61c20c4e39a5b53b1a4d0133ea [2023-08-27 10:19:50,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 10:19:50,715 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 10:19:50,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 10:19:50,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 10:19:50,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 10:19:50,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:19:50" (1/1) ... [2023-08-27 10:19:50,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d495a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:50, skipping insertion in model container [2023-08-27 10:19:50,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:19:50" (1/1) ... [2023-08-27 10:19:50,777 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 10:19:51,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:19:51,115 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 10:19:51,134 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:19:51,136 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:19:51,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:19:51,181 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:19:51,182 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:19:51,188 INFO L206 MainTranslator]: Completed translation [2023-08-27 10:19:51,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51 WrapperNode [2023-08-27 10:19:51,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 10:19:51,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 10:19:51,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 10:19:51,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 10:19:51,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51" (1/1) ... [2023-08-27 10:19:51,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51" (1/1) ... [2023-08-27 10:19:51,243 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2023-08-27 10:19:51,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 10:19:51,245 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 10:19:51,245 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 10:19:51,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 10:19:51,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51" (1/1) ... [2023-08-27 10:19:51,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51" (1/1) ... [2023-08-27 10:19:51,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51" (1/1) ... [2023-08-27 10:19:51,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51" (1/1) ... [2023-08-27 10:19:51,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51" (1/1) ... [2023-08-27 10:19:51,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51" (1/1) ... [2023-08-27 10:19:51,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51" (1/1) ... [2023-08-27 10:19:51,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51" (1/1) ... [2023-08-27 10:19:51,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 10:19:51,277 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 10:19:51,277 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 10:19:51,277 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 10:19:51,278 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51" (1/1) ... [2023-08-27 10:19:51,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:19:51,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 10:19:51,308 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 10:19:51,312 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 10:19:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 10:19:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 10:19:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 10:19:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 10:19:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 10:19:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 10:19:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 10:19:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 10:19:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 10:19:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 10:19:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 10:19:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 10:19:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 10:19:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 10:19:51,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 10:19:51,341 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 10:19:51,448 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 10:19:51,450 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 10:19:51,697 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 10:19:51,718 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 10:19:51,718 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 10:19:51,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:19:51 BoogieIcfgContainer [2023-08-27 10:19:51,720 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 10:19:51,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 10:19:51,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 10:19:51,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 10:19:51,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:19:50" (1/3) ... [2023-08-27 10:19:51,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6439d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:19:51, skipping insertion in model container [2023-08-27 10:19:51,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:51" (2/3) ... [2023-08-27 10:19:51,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6439d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:19:51, skipping insertion in model container [2023-08-27 10:19:51,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:19:51" (3/3) ... [2023-08-27 10:19:51,726 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_tso.i [2023-08-27 10:19:51,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 10:19:51,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 10:19:51,742 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 10:19:51,823 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 10:19:51,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 93 transitions, 201 flow [2023-08-27 10:19:51,938 INFO L124 PetriNetUnfolderBase]: 3/90 cut-off events. [2023-08-27 10:19:51,938 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:19:51,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 3/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 10:19:51,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 93 transitions, 201 flow [2023-08-27 10:19:51,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 90 transitions, 189 flow [2023-08-27 10:19:51,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:19:51,964 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 90 transitions, 189 flow [2023-08-27 10:19:51,967 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 90 transitions, 189 flow [2023-08-27 10:19:51,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 90 transitions, 189 flow [2023-08-27 10:19:52,002 INFO L124 PetriNetUnfolderBase]: 3/90 cut-off events. [2023-08-27 10:19:52,003 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:19:52,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 3/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 10:19:52,006 INFO L119 LiptonReduction]: Number of co-enabled transitions 2256 [2023-08-27 10:19:54,159 INFO L134 LiptonReduction]: Checked pairs total: 5871 [2023-08-27 10:19:54,160 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-27 10:19:54,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 10:19:54,184 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;@e27ee05, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:19:54,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-27 10:19:54,188 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:19:54,188 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 10:19:54,188 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:19:54,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:54,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 10:19:54,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:19:54,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:54,194 INFO L85 PathProgramCache]: Analyzing trace with hash 329670179, now seen corresponding path program 1 times [2023-08-27 10:19:54,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:54,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286483996] [2023-08-27 10:19:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:54,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:54,381 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 10:19:54,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:54,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286483996] [2023-08-27 10:19:54,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286483996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:54,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:54,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:19:54,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869515044] [2023-08-27 10:19:54,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:54,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:19:54,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:19:54,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:19:54,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 173 [2023-08-27 10:19:54,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 10:19:54,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:54,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 173 [2023-08-27 10:19:54,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:54,634 INFO L124 PetriNetUnfolderBase]: 532/888 cut-off events. [2023-08-27 10:19:54,634 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-27 10:19:54,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 888 events. 532/888 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 4699 event pairs, 306 based on Foata normal form. 8/554 useless extension candidates. Maximal degree in co-relation 1794. Up to 843 conditions per place. [2023-08-27 10:19:54,645 INFO L140 encePairwiseOnDemand]: 161/173 looper letters, 28 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-08-27 10:19:54,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 149 flow [2023-08-27 10:19:54,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:19:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:19:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2023-08-27 10:19:54,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51252408477842 [2023-08-27 10:19:54,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 266 transitions. [2023-08-27 10:19:54,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 266 transitions. [2023-08-27 10:19:54,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:54,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 266 transitions. [2023-08-27 10:19:54,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 10:19:54,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 10:19:54,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 10:19:54,672 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 266 transitions. [2023-08-27 10:19:54,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 149 flow [2023-08-27 10:19:54,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 10:19:54,676 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 94 flow [2023-08-27 10:19:54,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-27 10:19:54,680 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-27 10:19:54,681 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 94 flow [2023-08-27 10:19:54,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 10:19:54,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:54,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:54,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 10:19:54,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:19:54,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:54,692 INFO L85 PathProgramCache]: Analyzing trace with hash 774351959, now seen corresponding path program 1 times [2023-08-27 10:19:54,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:54,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286167082] [2023-08-27 10:19:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:54,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:54,795 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 10:19:54,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:54,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286167082] [2023-08-27 10:19:54,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286167082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:54,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:54,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:19:54,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142522037] [2023-08-27 10:19:54,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:54,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:19:54,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:54,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:19:54,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:19:54,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 173 [2023-08-27 10:19:54,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 10:19:54,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:54,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 173 [2023-08-27 10:19:54,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:54,898 INFO L124 PetriNetUnfolderBase]: 327/559 cut-off events. [2023-08-27 10:19:54,898 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-08-27 10:19:54,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1442 conditions, 559 events. 327/559 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2582 event pairs, 150 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 1431. Up to 513 conditions per place. [2023-08-27 10:19:54,910 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2023-08-27 10:19:54,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 158 flow [2023-08-27 10:19:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:19:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:19:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-08-27 10:19:54,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797687861271676 [2023-08-27 10:19:54,916 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-08-27 10:19:54,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-08-27 10:19:54,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:54,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-08-27 10:19:54,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 10:19:54,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 10:19:54,923 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 10:19:54,923 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 94 flow. Second operand 4 states and 332 transitions. [2023-08-27 10:19:54,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 158 flow [2023-08-27 10:19:54,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:19:54,925 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 86 flow [2023-08-27 10:19:54,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-08-27 10:19:54,927 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-08-27 10:19:54,928 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 86 flow [2023-08-27 10:19:54,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 10:19:54,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:54,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:54,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 10:19:54,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:19:54,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:54,933 INFO L85 PathProgramCache]: Analyzing trace with hash -28217580, now seen corresponding path program 1 times [2023-08-27 10:19:54,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:54,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939317464] [2023-08-27 10:19:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:54,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:55,022 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 10:19:55,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:55,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939317464] [2023-08-27 10:19:55,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939317464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:55,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:55,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:19:55,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74017936] [2023-08-27 10:19:55,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:55,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:19:55,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:55,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:19:55,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:19:55,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 173 [2023-08-27 10:19:55,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 10:19:55,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:55,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 173 [2023-08-27 10:19:55,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:55,103 INFO L124 PetriNetUnfolderBase]: 92/197 cut-off events. [2023-08-27 10:19:55,103 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-08-27 10:19:55,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 197 events. 92/197 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 688 event pairs, 31 based on Foata normal form. 12/181 useless extension candidates. Maximal degree in co-relation 504. Up to 104 conditions per place. [2023-08-27 10:19:55,105 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 30 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-08-27 10:19:55,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 202 flow [2023-08-27 10:19:55,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:19:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:19:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2023-08-27 10:19:55,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49277456647398843 [2023-08-27 10:19:55,107 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 341 transitions. [2023-08-27 10:19:55,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 341 transitions. [2023-08-27 10:19:55,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:55,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 341 transitions. [2023-08-27 10:19:55,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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 10:19:55,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 10:19:55,110 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 10:19:55,110 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 86 flow. Second operand 4 states and 341 transitions. [2023-08-27 10:19:55,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 202 flow [2023-08-27 10:19:55,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:19:55,112 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 127 flow [2023-08-27 10:19:55,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-27 10:19:55,114 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-27 10:19:55,114 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 127 flow [2023-08-27 10:19:55,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 10:19:55,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:55,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:55,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 10:19:55,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:19:55,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash -775280564, now seen corresponding path program 1 times [2023-08-27 10:19:55,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:55,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471400737] [2023-08-27 10:19:55,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:55,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:55,223 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 10:19:55,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:55,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471400737] [2023-08-27 10:19:55,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471400737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:55,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:55,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:19:55,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413041492] [2023-08-27 10:19:55,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:55,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:19:55,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:55,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:19:55,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:19:55,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 173 [2023-08-27 10:19:55,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 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 10:19:55,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:55,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 173 [2023-08-27 10:19:55,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:55,290 INFO L124 PetriNetUnfolderBase]: 56/122 cut-off events. [2023-08-27 10:19:55,291 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-08-27 10:19:55,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 122 events. 56/122 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 360 event pairs, 15 based on Foata normal form. 6/124 useless extension candidates. Maximal degree in co-relation 376. Up to 48 conditions per place. [2023-08-27 10:19:55,292 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 23 selfloop transitions, 10 changer transitions 1/37 dead transitions. [2023-08-27 10:19:55,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 207 flow [2023-08-27 10:19:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:19:55,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:19:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 413 transitions. [2023-08-27 10:19:55,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774566473988439 [2023-08-27 10:19:55,294 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 413 transitions. [2023-08-27 10:19:55,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 413 transitions. [2023-08-27 10:19:55,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:55,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 413 transitions. [2023-08-27 10:19:55,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 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 10:19:55,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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 10:19:55,298 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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 10:19:55,299 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 127 flow. Second operand 5 states and 413 transitions. [2023-08-27 10:19:55,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 207 flow [2023-08-27 10:19:55,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 193 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 10:19:55,301 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 121 flow [2023-08-27 10:19:55,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2023-08-27 10:19:55,302 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-27 10:19:55,302 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 121 flow [2023-08-27 10:19:55,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 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 10:19:55,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:55,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:55,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 10:19:55,303 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:19:55,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash 793705616, now seen corresponding path program 1 times [2023-08-27 10:19:55,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:55,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673400878] [2023-08-27 10:19:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:55,583 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 10:19:55,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:55,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673400878] [2023-08-27 10:19:55,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673400878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:55,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:55,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:19:55,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437940532] [2023-08-27 10:19:55,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:55,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:19:55,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:55,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:19:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:19:55,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 173 [2023-08-27 10:19:55,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 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 10:19:55,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:55,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 173 [2023-08-27 10:19:55,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:55,685 INFO L124 PetriNetUnfolderBase]: 186/331 cut-off events. [2023-08-27 10:19:55,686 INFO L125 PetriNetUnfolderBase]: For 373/373 co-relation queries the response was YES. [2023-08-27 10:19:55,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 331 events. 186/331 cut-off events. For 373/373 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1250 event pairs, 70 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 1017. Up to 211 conditions per place. [2023-08-27 10:19:55,688 INFO L140 encePairwiseOnDemand]: 164/173 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-08-27 10:19:55,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 269 flow [2023-08-27 10:19:55,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:19:55,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:19:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 295 transitions. [2023-08-27 10:19:55,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263005780346821 [2023-08-27 10:19:55,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 295 transitions. [2023-08-27 10:19:55,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 295 transitions. [2023-08-27 10:19:55,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:55,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 295 transitions. [2023-08-27 10:19:55,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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 10:19:55,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 10:19:55,694 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 10:19:55,694 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 121 flow. Second operand 4 states and 295 transitions. [2023-08-27 10:19:55,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 269 flow [2023-08-27 10:19:55,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 234 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 10:19:55,700 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-08-27 10:19:55,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-08-27 10:19:55,702 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-08-27 10:19:55,702 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-08-27 10:19:55,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 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 10:19:55,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-27 10:19:55,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-27 10:19:55,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-27 10:19:55,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-27 10:19:55,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-27 10:19:55,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-27 10:19:55,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-27 10:19:55,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-27 10:19:55,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-27 10:19:55,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-27 10:19:55,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-27 10:19:55,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-27 10:19:55,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-27 10:19:55,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-27 10:19:55,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-27 10:19:55,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-27 10:19:55,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 10:19:55,716 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-27 10:19:55,721 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 10:19:55,721 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 10:19:55,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:19:55 BasicIcfg [2023-08-27 10:19:55,724 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 10:19:55,724 INFO L158 Benchmark]: Toolchain (without parser) took 5008.88ms. Allocated memory was 367.0MB in the beginning and 505.4MB in the end (delta: 138.4MB). Free memory was 341.9MB in the beginning and 463.5MB in the end (delta: -121.6MB). Peak memory consumption was 16.3MB. Max. memory is 16.0GB. [2023-08-27 10:19:55,724 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 367.0MB. Free memory was 342.9MB in the beginning and 342.8MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:19:55,727 INFO L158 Benchmark]: CACSL2BoogieTranslator took 473.11ms. Allocated memory is still 367.0MB. Free memory was 341.9MB in the beginning and 321.6MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 10:19:55,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.11ms. Allocated memory is still 367.0MB. Free memory was 321.6MB in the beginning and 319.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:19:55,730 INFO L158 Benchmark]: Boogie Preprocessor took 31.48ms. Allocated memory is still 367.0MB. Free memory was 319.4MB in the beginning and 317.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:19:55,730 INFO L158 Benchmark]: RCFGBuilder took 442.91ms. Allocated memory is still 367.0MB. Free memory was 317.9MB in the beginning and 302.7MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 10:19:55,730 INFO L158 Benchmark]: TraceAbstraction took 4001.93ms. Allocated memory was 367.0MB in the beginning and 505.4MB in the end (delta: 138.4MB). Free memory was 301.6MB in the beginning and 463.5MB in the end (delta: -161.9MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:19:55,732 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 367.0MB. Free memory was 342.9MB in the beginning and 342.8MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 473.11ms. Allocated memory is still 367.0MB. Free memory was 341.9MB in the beginning and 321.6MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.11ms. Allocated memory is still 367.0MB. Free memory was 321.6MB in the beginning and 319.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.48ms. Allocated memory is still 367.0MB. Free memory was 319.4MB in the beginning and 317.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 442.91ms. Allocated memory is still 367.0MB. Free memory was 317.9MB in the beginning and 302.7MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4001.93ms. Allocated memory was 367.0MB in the beginning and 505.4MB in the end (delta: 138.4MB). Free memory was 301.6MB in the beginning and 463.5MB in the end (delta: -161.9MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 97 PlacesBefore, 35 PlacesAfterwards, 90 TransitionsBefore, 26 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 80 TotalNumberOfCompositions, 5871 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2829, independent: 2675, independent conditional: 0, independent unconditional: 2675, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1255, independent: 1205, independent conditional: 0, independent unconditional: 1205, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2829, independent: 1470, independent conditional: 0, independent unconditional: 1470, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 1255, unknown conditional: 0, unknown unconditional: 1255] , Statistics on independence cache: Total cache size (in pairs): 106, Positive cache size: 89, Positive conditional cache size: 0, Positive unconditional cache size: 89, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 729]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 729]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 744]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 744]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 759]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 759]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 121 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 230 IncrementalHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 9 mSDtfsCounter, 230 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 164 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 10:19:55,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...