/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/pthread-wmm/safe017_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 03:55:16,586 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 03:55:16,669 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 03:55:16,675 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 03:55:16,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 03:55:16,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 03:55:16,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 03:55:16,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 03:55:16,714 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 03:55:16,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 03:55:16,717 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 03:55:16,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 03:55:16,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 03:55:16,719 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 03:55:16,719 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 03:55:16,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 03:55:16,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 03:55:16,720 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 03:55:16,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 03:55:16,720 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 03:55:16,720 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 03:55:16,721 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 03:55:16,721 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 03:55:16,722 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 03:55:16,722 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 03:55:16,722 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 03:55:16,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 03:55:16,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:55:16,723 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 03:55:16,723 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 03:55:16,724 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 03:55:16,724 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 03:55:16,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 03:55:16,724 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 03:55:16,725 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 03:55:16,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 03:55:17,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 03:55:17,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 03:55:17,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 03:55:17,070 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 03:55:17,070 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 03:55:17,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.i [2023-08-27 03:55:18,345 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 03:55:18,617 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 03:55:18,618 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.i [2023-08-27 03:55:18,630 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/458f6376e/573429274c1841808464e35846db32a4/FLAG36261270f [2023-08-27 03:55:18,647 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/458f6376e/573429274c1841808464e35846db32a4 [2023-08-27 03:55:18,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 03:55:18,653 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 03:55:18,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 03:55:18,656 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 03:55:18,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 03:55:18,660 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:55:18" (1/1) ... [2023-08-27 03:55:18,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@572ab5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:18, skipping insertion in model container [2023-08-27 03:55:18,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:55:18" (1/1) ... [2023-08-27 03:55:18,712 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 03:55:19,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:55:19,045 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 03:55:19,063 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:55:19,065 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:55:19,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:55:19,117 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:55:19,118 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:55:19,124 INFO L206 MainTranslator]: Completed translation [2023-08-27 03:55:19,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19 WrapperNode [2023-08-27 03:55:19,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 03:55:19,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 03:55:19,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 03:55:19,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 03:55:19,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19" (1/1) ... [2023-08-27 03:55:19,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19" (1/1) ... [2023-08-27 03:55:19,161 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2023-08-27 03:55:19,161 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 03:55:19,162 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 03:55:19,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 03:55:19,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 03:55:19,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19" (1/1) ... [2023-08-27 03:55:19,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19" (1/1) ... [2023-08-27 03:55:19,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19" (1/1) ... [2023-08-27 03:55:19,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19" (1/1) ... [2023-08-27 03:55:19,176 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19" (1/1) ... [2023-08-27 03:55:19,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19" (1/1) ... [2023-08-27 03:55:19,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19" (1/1) ... [2023-08-27 03:55:19,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19" (1/1) ... [2023-08-27 03:55:19,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 03:55:19,183 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 03:55:19,184 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 03:55:19,184 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 03:55:19,186 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19" (1/1) ... [2023-08-27 03:55:19,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:55:19,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:55:19,214 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 03:55:19,216 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 03:55:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 03:55:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 03:55:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 03:55:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 03:55:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 03:55:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 03:55:19,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 03:55:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 03:55:19,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 03:55:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 03:55:19,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 03:55:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 03:55:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 03:55:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 03:55:19,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 03:55:19,246 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 03:55:19,387 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 03:55:19,389 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 03:55:19,610 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 03:55:19,649 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 03:55:19,649 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 03:55:19,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:55:19 BoogieIcfgContainer [2023-08-27 03:55:19,651 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 03:55:19,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 03:55:19,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 03:55:19,656 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 03:55:19,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:55:18" (1/3) ... [2023-08-27 03:55:19,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b86220c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:55:19, skipping insertion in model container [2023-08-27 03:55:19,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:19" (2/3) ... [2023-08-27 03:55:19,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b86220c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:55:19, skipping insertion in model container [2023-08-27 03:55:19,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:55:19" (3/3) ... [2023-08-27 03:55:19,658 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2023-08-27 03:55:19,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 03:55:19,676 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 03:55:19,676 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 03:55:19,744 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:55:19,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 92 transitions, 199 flow [2023-08-27 03:55:19,808 INFO L124 PetriNetUnfolderBase]: 3/89 cut-off events. [2023-08-27 03:55:19,808 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:55:19,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 3/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-27 03:55:19,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 92 transitions, 199 flow [2023-08-27 03:55:19,816 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 89 transitions, 187 flow [2023-08-27 03:55:19,819 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:55:19,827 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 89 transitions, 187 flow [2023-08-27 03:55:19,829 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 89 transitions, 187 flow [2023-08-27 03:55:19,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 89 transitions, 187 flow [2023-08-27 03:55:19,850 INFO L124 PetriNetUnfolderBase]: 3/89 cut-off events. [2023-08-27 03:55:19,851 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:55:19,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 3/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-27 03:55:19,853 INFO L119 LiptonReduction]: Number of co-enabled transitions 2146 [2023-08-27 03:55:22,019 INFO L134 LiptonReduction]: Checked pairs total: 6806 [2023-08-27 03:55:22,020 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-27 03:55:22,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 03:55:22,037 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;@5e570efc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:55:22,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-27 03:55:22,040 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:55:22,040 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 03:55:22,040 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:55:22,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:22,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 03:55:22,042 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 03:55:22,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:22,046 INFO L85 PathProgramCache]: Analyzing trace with hash 328589951, now seen corresponding path program 1 times [2023-08-27 03:55:22,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:22,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340013398] [2023-08-27 03:55:22,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:22,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:22,234 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 03:55:22,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:22,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340013398] [2023-08-27 03:55:22,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340013398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:22,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:22,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:55:22,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577432541] [2023-08-27 03:55:22,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:22,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:55:22,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:55:22,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:55:22,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 03:55:22,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 03:55:22,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:22,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 03:55:22,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:22,469 INFO L124 PetriNetUnfolderBase]: 496/811 cut-off events. [2023-08-27 03:55:22,470 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-27 03:55:22,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 811 events. 496/811 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 3779 event pairs, 127 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 1644. Up to 710 conditions per place. [2023-08-27 03:55:22,484 INFO L140 encePairwiseOnDemand]: 168/179 looper letters, 30 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-08-27 03:55:22,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 155 flow [2023-08-27 03:55:22,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:55:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:55:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-08-27 03:55:22,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49162011173184356 [2023-08-27 03:55:22,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-08-27 03:55:22,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-08-27 03:55:22,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:22,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-08-27 03:55:22,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 03:55:22,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 03:55:22,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 03:55:22,521 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 57 flow. Second operand 3 states and 264 transitions. [2023-08-27 03:55:22,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 155 flow [2023-08-27 03:55:22,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 150 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 03:55:22,525 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 88 flow [2023-08-27 03:55:22,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-27 03:55:22,532 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-27 03:55:22,532 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 88 flow [2023-08-27 03:55:22,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 03:55:22,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:22,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:22,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 03:55:22,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:55:22,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1819806395, now seen corresponding path program 1 times [2023-08-27 03:55:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023942773] [2023-08-27 03:55:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:22,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:22,890 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 03:55:22,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:22,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023942773] [2023-08-27 03:55:22,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023942773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:22,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:22,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:55:22,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328419201] [2023-08-27 03:55:22,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:22,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:55:22,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:22,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:55:22,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:55:22,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-27 03:55:22,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 03:55:22,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:22,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-27 03:55:22,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:23,111 INFO L124 PetriNetUnfolderBase]: 956/1649 cut-off events. [2023-08-27 03:55:23,112 INFO L125 PetriNetUnfolderBase]: For 226/265 co-relation queries the response was YES. [2023-08-27 03:55:23,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4161 conditions, 1649 events. 956/1649 cut-off events. For 226/265 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9336 event pairs, 346 based on Foata normal form. 4/1316 useless extension candidates. Maximal degree in co-relation 4150. Up to 813 conditions per place. [2023-08-27 03:55:23,124 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 36 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2023-08-27 03:55:23,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 46 transitions, 239 flow [2023-08-27 03:55:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:55:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:55:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-08-27 03:55:23,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618249534450652 [2023-08-27 03:55:23,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-08-27 03:55:23,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-08-27 03:55:23,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:23,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-08-27 03:55:23,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 03:55:23,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 03:55:23,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 03:55:23,132 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 88 flow. Second operand 3 states and 248 transitions. [2023-08-27 03:55:23,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 46 transitions, 239 flow [2023-08-27 03:55:23,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:55:23,138 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 138 flow [2023-08-27 03:55:23,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-08-27 03:55:23,141 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-27 03:55:23,141 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 138 flow [2023-08-27 03:55:23,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 03:55:23,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:23,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:23,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 03:55:23,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:55:23,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:23,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1413289020, now seen corresponding path program 1 times [2023-08-27 03:55:23,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:23,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071403308] [2023-08-27 03:55:23,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:23,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:23,194 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 03:55:23,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:23,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071403308] [2023-08-27 03:55:23,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071403308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:23,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:23,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:55:23,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903479818] [2023-08-27 03:55:23,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:23,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:55:23,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:23,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:55:23,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:55:23,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 03:55:23,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 03:55:23,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:23,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 03:55:23,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:23,329 INFO L124 PetriNetUnfolderBase]: 708/1200 cut-off events. [2023-08-27 03:55:23,330 INFO L125 PetriNetUnfolderBase]: For 826/875 co-relation queries the response was YES. [2023-08-27 03:55:23,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3701 conditions, 1200 events. 708/1200 cut-off events. For 826/875 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6402 event pairs, 127 based on Foata normal form. 29/1016 useless extension candidates. Maximal degree in co-relation 3687. Up to 941 conditions per place. [2023-08-27 03:55:23,339 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 35 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-08-27 03:55:23,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 262 flow [2023-08-27 03:55:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:55:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:55:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2023-08-27 03:55:23,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46089385474860334 [2023-08-27 03:55:23,341 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 330 transitions. [2023-08-27 03:55:23,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 330 transitions. [2023-08-27 03:55:23,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:23,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 330 transitions. [2023-08-27 03:55:23,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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 03:55:23,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 03:55:23,346 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 03:55:23,346 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 138 flow. Second operand 4 states and 330 transitions. [2023-08-27 03:55:23,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 262 flow [2023-08-27 03:55:23,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:55:23,350 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 120 flow [2023-08-27 03:55:23,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-08-27 03:55:23,352 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-08-27 03:55:23,352 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 120 flow [2023-08-27 03:55:23,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 03:55:23,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:23,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:23,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 03:55:23,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:55:23,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1413256471, now seen corresponding path program 1 times [2023-08-27 03:55:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:23,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131746838] [2023-08-27 03:55:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:23,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:23,420 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 03:55:23,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:23,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131746838] [2023-08-27 03:55:23,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131746838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:23,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:23,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:55:23,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677241521] [2023-08-27 03:55:23,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:23,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:55:23,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:23,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:55:23,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:55:23,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 03:55:23,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 03:55:23,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:23,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 03:55:23,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:23,553 INFO L124 PetriNetUnfolderBase]: 492/838 cut-off events. [2023-08-27 03:55:23,553 INFO L125 PetriNetUnfolderBase]: For 609/658 co-relation queries the response was YES. [2023-08-27 03:55:23,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2519 conditions, 838 events. 492/838 cut-off events. For 609/658 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4135 event pairs, 68 based on Foata normal form. 29/789 useless extension candidates. Maximal degree in co-relation 2505. Up to 322 conditions per place. [2023-08-27 03:55:23,560 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 46 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2023-08-27 03:55:23,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 57 transitions, 328 flow [2023-08-27 03:55:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:55:23,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:55:23,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2023-08-27 03:55:23,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4762569832402235 [2023-08-27 03:55:23,562 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 341 transitions. [2023-08-27 03:55:23,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 341 transitions. [2023-08-27 03:55:23,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:23,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 341 transitions. [2023-08-27 03:55:23,565 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 03:55:23,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 03:55:23,567 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 03:55:23,567 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 120 flow. Second operand 4 states and 341 transitions. [2023-08-27 03:55:23,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 57 transitions, 328 flow [2023-08-27 03:55:23,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 57 transitions, 323 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:55:23,571 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 159 flow [2023-08-27 03:55:23,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-08-27 03:55:23,572 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-27 03:55:23,573 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 159 flow [2023-08-27 03:55:23,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 03:55:23,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:23,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:23,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 03:55:23,573 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 03:55:23,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:23,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1437344434, now seen corresponding path program 1 times [2023-08-27 03:55:23,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:23,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909236576] [2023-08-27 03:55:23,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:23,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:23,769 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 03:55:23,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:23,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909236576] [2023-08-27 03:55:23,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909236576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:23,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:23,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:55:23,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336200458] [2023-08-27 03:55:23,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:23,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:55:23,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:23,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:55:23,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:55:23,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-27 03:55:23,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 03:55:23,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:23,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-27 03:55:23,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:23,908 INFO L124 PetriNetUnfolderBase]: 573/939 cut-off events. [2023-08-27 03:55:23,908 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2023-08-27 03:55:23,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3350 conditions, 939 events. 573/939 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4232 event pairs, 52 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 3335. Up to 438 conditions per place. [2023-08-27 03:55:23,915 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 54 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2023-08-27 03:55:23,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 65 transitions, 448 flow [2023-08-27 03:55:23,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:55:23,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:55:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 328 transitions. [2023-08-27 03:55:23,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581005586592179 [2023-08-27 03:55:23,917 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 328 transitions. [2023-08-27 03:55:23,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 328 transitions. [2023-08-27 03:55:23,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:23,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 328 transitions. [2023-08-27 03:55:23,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 03:55:23,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 03:55:23,920 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 03:55:23,920 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 159 flow. Second operand 4 states and 328 transitions. [2023-08-27 03:55:23,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 65 transitions, 448 flow [2023-08-27 03:55:23,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 65 transitions, 421 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-27 03:55:23,924 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 235 flow [2023-08-27 03:55:23,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-27 03:55:23,926 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2023-08-27 03:55:23,926 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 235 flow [2023-08-27 03:55:23,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 03:55:23,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:23,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:23,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 03:55:23,927 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:55:23,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:23,927 INFO L85 PathProgramCache]: Analyzing trace with hash 579421728, now seen corresponding path program 1 times [2023-08-27 03:55:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68722868] [2023-08-27 03:55:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:23,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:24,048 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 03:55:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68722868] [2023-08-27 03:55:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68722868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:24,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:24,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:55:24,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815176496] [2023-08-27 03:55:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:24,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:55:24,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:55:24,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:55:24,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-27 03:55:24,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 03:55:24,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:24,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-27 03:55:24,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:24,165 INFO L124 PetriNetUnfolderBase]: 551/905 cut-off events. [2023-08-27 03:55:24,165 INFO L125 PetriNetUnfolderBase]: For 1308/1308 co-relation queries the response was YES. [2023-08-27 03:55:24,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3561 conditions, 905 events. 551/905 cut-off events. For 1308/1308 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3863 event pairs, 82 based on Foata normal form. 8/889 useless extension candidates. Maximal degree in co-relation 3543. Up to 366 conditions per place. [2023-08-27 03:55:24,172 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 57 selfloop transitions, 14 changer transitions 0/71 dead transitions. [2023-08-27 03:55:24,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 71 transitions, 562 flow [2023-08-27 03:55:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:55:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:55:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 320 transitions. [2023-08-27 03:55:24,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44692737430167595 [2023-08-27 03:55:24,174 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 320 transitions. [2023-08-27 03:55:24,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 320 transitions. [2023-08-27 03:55:24,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:24,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 320 transitions. [2023-08-27 03:55:24,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 03:55:24,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 03:55:24,178 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 03:55:24,178 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 235 flow. Second operand 4 states and 320 transitions. [2023-08-27 03:55:24,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 71 transitions, 562 flow [2023-08-27 03:55:24,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 71 transitions, 562 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 03:55:24,184 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 369 flow [2023-08-27 03:55:24,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=369, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2023-08-27 03:55:24,186 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-08-27 03:55:24,186 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 369 flow [2023-08-27 03:55:24,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 03:55:24,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:24,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:24,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 03:55:24,187 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:55:24,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash 793331684, now seen corresponding path program 1 times [2023-08-27 03:55:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:24,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485804876] [2023-08-27 03:55:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:24,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:24,282 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 03:55:24,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:24,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485804876] [2023-08-27 03:55:24,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485804876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:24,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:24,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:55:24,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254486179] [2023-08-27 03:55:24,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:24,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:55:24,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:24,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:55:24,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:55:24,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 179 [2023-08-27 03:55:24,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 03:55:24,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:24,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 179 [2023-08-27 03:55:24,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:24,395 INFO L124 PetriNetUnfolderBase]: 499/843 cut-off events. [2023-08-27 03:55:24,395 INFO L125 PetriNetUnfolderBase]: For 2127/2143 co-relation queries the response was YES. [2023-08-27 03:55:24,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3749 conditions, 843 events. 499/843 cut-off events. For 2127/2143 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3730 event pairs, 109 based on Foata normal form. 6/822 useless extension candidates. Maximal degree in co-relation 3726. Up to 740 conditions per place. [2023-08-27 03:55:24,403 INFO L140 encePairwiseOnDemand]: 175/179 looper letters, 55 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2023-08-27 03:55:24,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 666 flow [2023-08-27 03:55:24,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:55:24,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:55:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-08-27 03:55:24,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767225325884544 [2023-08-27 03:55:24,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-08-27 03:55:24,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-08-27 03:55:24,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:24,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-08-27 03:55:24,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 03:55:24,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 03:55:24,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 03:55:24,409 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 369 flow. Second operand 3 states and 256 transitions. [2023-08-27 03:55:24,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 666 flow [2023-08-27 03:55:24,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 659 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:55:24,416 INFO L231 Difference]: Finished difference. Result has 48 places, 54 transitions, 458 flow [2023-08-27 03:55:24,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=48, PETRI_TRANSITIONS=54} [2023-08-27 03:55:24,417 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-08-27 03:55:24,418 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 54 transitions, 458 flow [2023-08-27 03:55:24,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 03:55:24,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:24,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:24,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 03:55:24,418 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:55:24,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:24,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1521082475, now seen corresponding path program 1 times [2023-08-27 03:55:24,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:24,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551280548] [2023-08-27 03:55:24,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:24,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:24,527 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 03:55:24,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:24,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551280548] [2023-08-27 03:55:24,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551280548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:24,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:24,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:55:24,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562042661] [2023-08-27 03:55:24,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:24,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:55:24,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:24,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:55:24,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:55:24,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-27 03:55:24,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 54 transitions, 458 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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 03:55:24,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:24,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-27 03:55:24,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:24,670 INFO L124 PetriNetUnfolderBase]: 599/1005 cut-off events. [2023-08-27 03:55:24,670 INFO L125 PetriNetUnfolderBase]: For 2736/2736 co-relation queries the response was YES. [2023-08-27 03:55:24,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 1005 events. 599/1005 cut-off events. For 2736/2736 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4632 event pairs, 89 based on Foata normal form. 6/975 useless extension candidates. Maximal degree in co-relation 4657. Up to 409 conditions per place. [2023-08-27 03:55:24,679 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 65 selfloop transitions, 28 changer transitions 0/93 dead transitions. [2023-08-27 03:55:24,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 93 transitions, 857 flow [2023-08-27 03:55:24,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:55:24,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:55:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2023-08-27 03:55:24,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650837988826816 [2023-08-27 03:55:24,682 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2023-08-27 03:55:24,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2023-08-27 03:55:24,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:24,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2023-08-27 03:55:24,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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 03:55:24,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 03:55:24,685 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 03:55:24,685 INFO L175 Difference]: Start difference. First operand has 48 places, 54 transitions, 458 flow. Second operand 4 states and 333 transitions. [2023-08-27 03:55:24,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 93 transitions, 857 flow [2023-08-27 03:55:24,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 93 transitions, 848 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:55:24,693 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 606 flow [2023-08-27 03:55:24,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=606, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2023-08-27 03:55:24,694 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2023-08-27 03:55:24,694 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 606 flow [2023-08-27 03:55:24,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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 03:55:24,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:24,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:24,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 03:55:24,695 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:55:24,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1521044035, now seen corresponding path program 1 times [2023-08-27 03:55:24,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:24,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133789974] [2023-08-27 03:55:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:24,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:24,789 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 03:55:24,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:24,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133789974] [2023-08-27 03:55:24,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133789974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:24,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:24,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:55:24,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791134452] [2023-08-27 03:55:24,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:24,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:55:24,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:24,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:55:24,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:55:24,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 03:55:24,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 606 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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 03:55:24,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:24,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 03:55:24,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:24,951 INFO L124 PetriNetUnfolderBase]: 395/767 cut-off events. [2023-08-27 03:55:24,952 INFO L125 PetriNetUnfolderBase]: For 5397/5590 co-relation queries the response was YES. [2023-08-27 03:55:24,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3665 conditions, 767 events. 395/767 cut-off events. For 5397/5590 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4221 event pairs, 74 based on Foata normal form. 243/960 useless extension candidates. Maximal degree in co-relation 3636. Up to 507 conditions per place. [2023-08-27 03:55:24,959 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 84 selfloop transitions, 8 changer transitions 3/108 dead transitions. [2023-08-27 03:55:24,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 108 transitions, 1282 flow [2023-08-27 03:55:24,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:55:24,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:55:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 408 transitions. [2023-08-27 03:55:24,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558659217877095 [2023-08-27 03:55:24,961 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 408 transitions. [2023-08-27 03:55:24,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 408 transitions. [2023-08-27 03:55:24,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:24,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 408 transitions. [2023-08-27 03:55:24,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 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 03:55:24,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 03:55:24,964 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 03:55:24,965 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 606 flow. Second operand 5 states and 408 transitions. [2023-08-27 03:55:24,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 108 transitions, 1282 flow [2023-08-27 03:55:24,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 108 transitions, 1274 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-27 03:55:24,972 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 653 flow [2023-08-27 03:55:24,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=653, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2023-08-27 03:55:24,973 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-08-27 03:55:24,973 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 653 flow [2023-08-27 03:55:24,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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 03:55:24,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:24,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:24,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 03:55:24,974 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:55:24,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:24,974 INFO L85 PathProgramCache]: Analyzing trace with hash -553419945, now seen corresponding path program 1 times [2023-08-27 03:55:24,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:24,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805093548] [2023-08-27 03:55:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:24,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:25,072 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 03:55:25,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:25,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805093548] [2023-08-27 03:55:25,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805093548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:25,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:25,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:55:25,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024799941] [2023-08-27 03:55:25,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:25,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:55:25,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:25,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:55:25,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:55:25,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 03:55:25,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 653 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 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 03:55:25,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:25,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 03:55:25,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:25,237 INFO L124 PetriNetUnfolderBase]: 287/614 cut-off events. [2023-08-27 03:55:25,238 INFO L125 PetriNetUnfolderBase]: For 5527/5708 co-relation queries the response was YES. [2023-08-27 03:55:25,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 614 events. 287/614 cut-off events. For 5527/5708 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3510 event pairs, 35 based on Foata normal form. 216/778 useless extension candidates. Maximal degree in co-relation 3147. Up to 207 conditions per place. [2023-08-27 03:55:25,243 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 87 selfloop transitions, 15 changer transitions 3/117 dead transitions. [2023-08-27 03:55:25,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 117 transitions, 1420 flow [2023-08-27 03:55:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 03:55:25,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 03:55:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 567 transitions. [2023-08-27 03:55:25,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45251396648044695 [2023-08-27 03:55:25,246 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 567 transitions. [2023-08-27 03:55:25,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 567 transitions. [2023-08-27 03:55:25,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:25,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 567 transitions. [2023-08-27 03:55:25,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 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 03:55:25,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 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 03:55:25,251 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 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 03:55:25,251 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 653 flow. Second operand 7 states and 567 transitions. [2023-08-27 03:55:25,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 117 transitions, 1420 flow [2023-08-27 03:55:25,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 117 transitions, 1409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:55:25,260 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 669 flow [2023-08-27 03:55:25,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=669, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2023-08-27 03:55:25,261 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2023-08-27 03:55:25,261 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 669 flow [2023-08-27 03:55:25,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 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 03:55:25,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:25,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:25,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 03:55:25,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:55:25,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:25,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1719213684, now seen corresponding path program 1 times [2023-08-27 03:55:25,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:25,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778640250] [2023-08-27 03:55:25,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:25,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:25,354 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 03:55:25,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:25,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778640250] [2023-08-27 03:55:25,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778640250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:25,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:25,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:55:25,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267817893] [2023-08-27 03:55:25,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:25,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:55:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:25,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:55:25,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:55:25,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 179 [2023-08-27 03:55:25,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 669 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 03:55:25,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:25,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 179 [2023-08-27 03:55:25,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:25,516 INFO L124 PetriNetUnfolderBase]: 491/1070 cut-off events. [2023-08-27 03:55:25,516 INFO L125 PetriNetUnfolderBase]: For 8731/8784 co-relation queries the response was YES. [2023-08-27 03:55:25,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6454 conditions, 1070 events. 491/1070 cut-off events. For 8731/8784 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7006 event pairs, 88 based on Foata normal form. 29/1001 useless extension candidates. Maximal degree in co-relation 6417. Up to 542 conditions per place. [2023-08-27 03:55:25,526 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 78 selfloop transitions, 10 changer transitions 3/97 dead transitions. [2023-08-27 03:55:25,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 1193 flow [2023-08-27 03:55:25,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:55:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:55:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2023-08-27 03:55:25,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650837988826816 [2023-08-27 03:55:25,528 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2023-08-27 03:55:25,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2023-08-27 03:55:25,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:25,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2023-08-27 03:55:25,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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 03:55:25,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 03:55:25,531 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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 03:55:25,531 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 669 flow. Second operand 4 states and 333 transitions. [2023-08-27 03:55:25,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 97 transitions, 1193 flow [2023-08-27 03:55:25,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 1133 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-27 03:55:25,549 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 682 flow [2023-08-27 03:55:25,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=682, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-08-27 03:55:25,550 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2023-08-27 03:55:25,550 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 682 flow [2023-08-27 03:55:25,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 03:55:25,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:25,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:25,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 03:55:25,551 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:55:25,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:25,551 INFO L85 PathProgramCache]: Analyzing trace with hash 940259686, now seen corresponding path program 1 times [2023-08-27 03:55:25,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:25,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842745609] [2023-08-27 03:55:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:25,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:25,594 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 03:55:25,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:25,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842745609] [2023-08-27 03:55:25,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842745609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:25,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:25,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:55:25,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637143768] [2023-08-27 03:55:25,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:25,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:55:25,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:25,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:55:25,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:55:25,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 03:55:25,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 682 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 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 03:55:25,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:25,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 03:55:25,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:25,725 INFO L124 PetriNetUnfolderBase]: 377/809 cut-off events. [2023-08-27 03:55:25,725 INFO L125 PetriNetUnfolderBase]: For 6264/6511 co-relation queries the response was YES. [2023-08-27 03:55:25,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4735 conditions, 809 events. 377/809 cut-off events. For 6264/6511 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5123 event pairs, 31 based on Foata normal form. 149/943 useless extension candidates. Maximal degree in co-relation 4697. Up to 295 conditions per place. [2023-08-27 03:55:25,730 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 32 selfloop transitions, 10 changer transitions 36/83 dead transitions. [2023-08-27 03:55:25,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 1094 flow [2023-08-27 03:55:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:55:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:55:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 411 transitions. [2023-08-27 03:55:25,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592178770949721 [2023-08-27 03:55:25,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 411 transitions. [2023-08-27 03:55:25,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 411 transitions. [2023-08-27 03:55:25,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:25,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 411 transitions. [2023-08-27 03:55:25,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 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 03:55:25,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 03:55:25,736 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 03:55:25,736 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 682 flow. Second operand 5 states and 411 transitions. [2023-08-27 03:55:25,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 1094 flow [2023-08-27 03:55:25,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 1077 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:55:25,752 INFO L231 Difference]: Finished difference. Result has 66 places, 30 transitions, 338 flow [2023-08-27 03:55:25,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=66, PETRI_TRANSITIONS=30} [2023-08-27 03:55:25,753 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2023-08-27 03:55:25,753 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 30 transitions, 338 flow [2023-08-27 03:55:25,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 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 03:55:25,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:25,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:25,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 03:55:25,754 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:55:25,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash 765259100, now seen corresponding path program 1 times [2023-08-27 03:55:25,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:25,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700173976] [2023-08-27 03:55:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:25,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:25,850 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 03:55:25,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:25,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700173976] [2023-08-27 03:55:25,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700173976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:25,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:25,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 03:55:25,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314749795] [2023-08-27 03:55:25,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:25,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 03:55:25,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:25,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 03:55:25,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 03:55:25,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 03:55:25,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 30 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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 03:55:25,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:25,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 03:55:25,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:25,923 INFO L124 PetriNetUnfolderBase]: 65/158 cut-off events. [2023-08-27 03:55:25,923 INFO L125 PetriNetUnfolderBase]: For 1332/1353 co-relation queries the response was YES. [2023-08-27 03:55:25,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 158 events. 65/158 cut-off events. For 1332/1353 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 586 event pairs, 8 based on Foata normal form. 17/173 useless extension candidates. Maximal degree in co-relation 912. Up to 49 conditions per place. [2023-08-27 03:55:25,924 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 17 selfloop transitions, 10 changer transitions 23/52 dead transitions. [2023-08-27 03:55:25,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 52 transitions, 646 flow [2023-08-27 03:55:25,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 03:55:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 03:55:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 545 transitions. [2023-08-27 03:55:25,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349561053471668 [2023-08-27 03:55:25,927 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 545 transitions. [2023-08-27 03:55:25,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 545 transitions. [2023-08-27 03:55:25,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:25,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 545 transitions. [2023-08-27 03:55:25,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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 03:55:25,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 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 03:55:25,931 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 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 03:55:25,931 INFO L175 Difference]: Start difference. First operand has 66 places, 30 transitions, 338 flow. Second operand 7 states and 545 transitions. [2023-08-27 03:55:25,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 52 transitions, 646 flow [2023-08-27 03:55:25,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 455 flow, removed 26 selfloop flow, removed 17 redundant places. [2023-08-27 03:55:25,935 INFO L231 Difference]: Finished difference. Result has 53 places, 22 transitions, 171 flow [2023-08-27 03:55:25,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=53, PETRI_TRANSITIONS=22} [2023-08-27 03:55:25,936 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2023-08-27 03:55:25,936 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 22 transitions, 171 flow [2023-08-27 03:55:25,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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 03:55:25,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:55:25,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:25,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 03:55:25,936 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:55:25,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:55:25,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1764491596, now seen corresponding path program 1 times [2023-08-27 03:55:25,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:55:25,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276808142] [2023-08-27 03:55:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:55:25,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:55:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:55:26,025 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 03:55:26,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:55:26,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276808142] [2023-08-27 03:55:26,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276808142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:55:26,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:55:26,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:55:26,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405294670] [2023-08-27 03:55:26,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:55:26,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:55:26,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:55:26,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:55:26,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:55:26,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 179 [2023-08-27 03:55:26,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 22 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 03:55:26,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:55:26,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 179 [2023-08-27 03:55:26,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:55:26,062 INFO L124 PetriNetUnfolderBase]: 22/58 cut-off events. [2023-08-27 03:55:26,062 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2023-08-27 03:55:26,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 58 events. 22/58 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 4 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 285. Up to 18 conditions per place. [2023-08-27 03:55:26,063 INFO L140 encePairwiseOnDemand]: 175/179 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-27 03:55:26,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 30 transitions, 270 flow [2023-08-27 03:55:26,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:55:26,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:55:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 387 transitions. [2023-08-27 03:55:26,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324022346368715 [2023-08-27 03:55:26,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 387 transitions. [2023-08-27 03:55:26,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 387 transitions. [2023-08-27 03:55:26,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:55:26,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 387 transitions. [2023-08-27 03:55:26,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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 03:55:26,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 03:55:26,068 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 03:55:26,068 INFO L175 Difference]: Start difference. First operand has 53 places, 22 transitions, 171 flow. Second operand 5 states and 387 transitions. [2023-08-27 03:55:26,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 30 transitions, 270 flow [2023-08-27 03:55:26,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 193 flow, removed 3 selfloop flow, removed 18 redundant places. [2023-08-27 03:55:26,069 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-08-27 03:55:26,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-08-27 03:55:26,070 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-27 03:55:26,070 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-08-27 03:55:26,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 03:55:26,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-27 03:55:26,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-27 03:55:26,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-27 03:55:26,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-27 03:55:26,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-27 03:55:26,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-27 03:55:26,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-27 03:55:26,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-27 03:55:26,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-27 03:55:26,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-27 03:55:26,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-27 03:55:26,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-27 03:55:26,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-27 03:55:26,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-27 03:55:26,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-27 03:55:26,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-27 03:55:26,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 03:55:26,074 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:55:26,078 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 03:55:26,078 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 03:55:26,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:55:26 BasicIcfg [2023-08-27 03:55:26,081 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 03:55:26,081 INFO L158 Benchmark]: Toolchain (without parser) took 7428.36ms. Allocated memory was 377.5MB in the beginning and 723.5MB in the end (delta: 346.0MB). Free memory was 351.9MB in the beginning and 325.2MB in the end (delta: 26.8MB). Peak memory consumption was 374.5MB. Max. memory is 16.0GB. [2023-08-27 03:55:26,081 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 377.5MB. Free memory was 355.2MB in the beginning and 355.0MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:55:26,081 INFO L158 Benchmark]: CACSL2BoogieTranslator took 469.06ms. Allocated memory is still 377.5MB. Free memory was 351.9MB in the beginning and 331.7MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 03:55:26,082 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.47ms. Allocated memory is still 377.5MB. Free memory was 331.7MB in the beginning and 329.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:55:26,082 INFO L158 Benchmark]: Boogie Preprocessor took 20.79ms. Allocated memory is still 377.5MB. Free memory was 329.6MB in the beginning and 328.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:55:26,082 INFO L158 Benchmark]: RCFGBuilder took 467.81ms. Allocated memory is still 377.5MB. Free memory was 328.2MB in the beginning and 312.8MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 03:55:26,082 INFO L158 Benchmark]: TraceAbstraction took 6427.72ms. Allocated memory was 377.5MB in the beginning and 723.5MB in the end (delta: 346.0MB). Free memory was 312.1MB in the beginning and 325.2MB in the end (delta: -13.1MB). Peak memory consumption was 334.7MB. Max. memory is 16.0GB. [2023-08-27 03:55:26,083 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 377.5MB. Free memory was 355.2MB in the beginning and 355.0MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 469.06ms. Allocated memory is still 377.5MB. Free memory was 351.9MB in the beginning and 331.7MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.47ms. Allocated memory is still 377.5MB. Free memory was 331.7MB in the beginning and 329.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.79ms. Allocated memory is still 377.5MB. Free memory was 329.6MB in the beginning and 328.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 467.81ms. Allocated memory is still 377.5MB. Free memory was 328.2MB in the beginning and 312.8MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 6427.72ms. Allocated memory was 377.5MB in the beginning and 723.5MB in the end (delta: 346.0MB). Free memory was 312.1MB in the beginning and 325.2MB in the end (delta: -13.1MB). Peak memory consumption was 334.7MB. 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, 96 PlacesBefore, 33 PlacesAfterwards, 89 TransitionsBefore, 24 TransitionsAfterwards, 2146 CoEnabledTransitionPairs, 8 FixpointIterations, 18 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 87 TotalNumberOfCompositions, 6806 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2438, independent: 2214, independent conditional: 0, independent unconditional: 2214, dependent: 224, dependent conditional: 0, dependent unconditional: 224, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1220, independent: 1170, independent conditional: 0, independent unconditional: 1170, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2438, independent: 1044, independent conditional: 0, independent unconditional: 1044, dependent: 174, dependent conditional: 0, dependent unconditional: 174, unknown: 1220, unknown conditional: 0, unknown unconditional: 1220] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, 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: 741]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 741]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 756]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 756]: 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, 119 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: 6.3s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 230 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 230 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 742 IncrementalHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 19 mSDtfsCounter, 742 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=682occurred in iteration=11, InterpolantAutomatonStates: 62, 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, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 548 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 03:55:26,099 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...