/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/mix040_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 10:08:09,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 10:08:09,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 10:08:09,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 10:08:09,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 10:08:09,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 10:08:09,677 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 10:08:09,677 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 10:08:09,678 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 10:08:09,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 10:08:09,682 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 10:08:09,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 10:08:09,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 10:08:09,683 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 10:08:09,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 10:08:09,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 10:08:09,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 10:08:09,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 10:08:09,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 10:08:09,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 10:08:09,685 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 10:08:09,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 10:08:09,685 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 10:08:09,686 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 10:08:09,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 10:08:09,686 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 10:08:09,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 10:08:09,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:08:09,687 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 10:08:09,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 10:08:09,688 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 10:08:09,688 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 10:08:09,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 10:08:09,688 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 10:08:09,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 10:08:09,689 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 10:08:10,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 10:08:10,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 10:08:10,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 10:08:10,033 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 10:08:10,034 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 10:08:10,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix040_tso.oepc.i [2023-08-27 10:08:11,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 10:08:11,514 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 10:08:11,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix040_tso.oepc.i [2023-08-27 10:08:11,529 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed7b2005/41636ceb96d04d6e9f901d5a09fa3dd2/FLAG8d5c8e8be [2023-08-27 10:08:11,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed7b2005/41636ceb96d04d6e9f901d5a09fa3dd2 [2023-08-27 10:08:11,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 10:08:11,544 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 10:08:11,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 10:08:11,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 10:08:11,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 10:08:11,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:08:11" (1/1) ... [2023-08-27 10:08:11,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7076308b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:11, skipping insertion in model container [2023-08-27 10:08:11,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:08:11" (1/1) ... [2023-08-27 10:08:11,605 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 10:08:11,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:08:11,983 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 10:08:12,011 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:08:12,013 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:08:12,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:08:12,108 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:08:12,108 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:08:12,114 INFO L206 MainTranslator]: Completed translation [2023-08-27 10:08:12,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12 WrapperNode [2023-08-27 10:08:12,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 10:08:12,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 10:08:12,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 10:08:12,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 10:08:12,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12" (1/1) ... [2023-08-27 10:08:12,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12" (1/1) ... [2023-08-27 10:08:12,194 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 170 [2023-08-27 10:08:12,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 10:08:12,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 10:08:12,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 10:08:12,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 10:08:12,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12" (1/1) ... [2023-08-27 10:08:12,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12" (1/1) ... [2023-08-27 10:08:12,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12" (1/1) ... [2023-08-27 10:08:12,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12" (1/1) ... [2023-08-27 10:08:12,230 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12" (1/1) ... [2023-08-27 10:08:12,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12" (1/1) ... [2023-08-27 10:08:12,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12" (1/1) ... [2023-08-27 10:08:12,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12" (1/1) ... [2023-08-27 10:08:12,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 10:08:12,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 10:08:12,252 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 10:08:12,252 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 10:08:12,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12" (1/1) ... [2023-08-27 10:08:12,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:08:12,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 10:08:12,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 10:08:12,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 10:08:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 10:08:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 10:08:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 10:08:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 10:08:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 10:08:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 10:08:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 10:08:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 10:08:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 10:08:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 10:08:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 10:08:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-27 10:08:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-27 10:08:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 10:08:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 10:08:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 10:08:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 10:08:12,323 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 10:08:12,470 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 10:08:12,472 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 10:08:12,870 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 10:08:12,944 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 10:08:12,944 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 10:08:12,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:08:12 BoogieIcfgContainer [2023-08-27 10:08:12,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 10:08:12,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 10:08:12,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 10:08:12,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 10:08:12,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:08:11" (1/3) ... [2023-08-27 10:08:12,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1266731b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:08:12, skipping insertion in model container [2023-08-27 10:08:12,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:08:12" (2/3) ... [2023-08-27 10:08:12,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1266731b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:08:12, skipping insertion in model container [2023-08-27 10:08:12,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:08:12" (3/3) ... [2023-08-27 10:08:12,953 INFO L112 eAbstractionObserver]: Analyzing ICFG mix040_tso.oepc.i [2023-08-27 10:08:12,967 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 10:08:12,968 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-27 10:08:12,968 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 10:08:13,016 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 10:08:13,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 143 transitions, 306 flow [2023-08-27 10:08:13,093 INFO L124 PetriNetUnfolderBase]: 3/139 cut-off events. [2023-08-27 10:08:13,093 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:08:13,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 3/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-08-27 10:08:13,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 143 transitions, 306 flow [2023-08-27 10:08:13,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 139 transitions, 290 flow [2023-08-27 10:08:13,115 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:08:13,124 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 139 transitions, 290 flow [2023-08-27 10:08:13,127 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 139 transitions, 290 flow [2023-08-27 10:08:13,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 139 transitions, 290 flow [2023-08-27 10:08:13,159 INFO L124 PetriNetUnfolderBase]: 3/139 cut-off events. [2023-08-27 10:08:13,159 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:08:13,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 3/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-08-27 10:08:13,163 INFO L119 LiptonReduction]: Number of co-enabled transitions 4466 [2023-08-27 10:08:17,837 INFO L134 LiptonReduction]: Checked pairs total: 16684 [2023-08-27 10:08:17,837 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-27 10:08:17,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 10:08:17,852 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;@41a81e47, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:08:17,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-27 10:08:17,857 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:08:17,857 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 10:08:17,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:08:17,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:17,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 10:08:17,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:17,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:17,863 INFO L85 PathProgramCache]: Analyzing trace with hash 597368638, now seen corresponding path program 1 times [2023-08-27 10:08:17,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:17,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889662954] [2023-08-27 10:08:17,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:17,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:18,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:18,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889662954] [2023-08-27 10:08:18,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889662954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:18,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:18,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:08:18,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230774312] [2023-08-27 10:08:18,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:18,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:08:18,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:08:18,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:08:18,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-08-27 10:08:18,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:18,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:18,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-08-27 10:08:18,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:20,043 INFO L124 PetriNetUnfolderBase]: 11796/16377 cut-off events. [2023-08-27 10:08:20,043 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-08-27 10:08:20,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32944 conditions, 16377 events. 11796/16377 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 95238 event pairs, 3216 based on Foata normal form. 0/10776 useless extension candidates. Maximal degree in co-relation 32932. Up to 14456 conditions per place. [2023-08-27 10:08:20,145 INFO L140 encePairwiseOnDemand]: 254/267 looper letters, 51 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-27 10:08:20,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 253 flow [2023-08-27 10:08:20,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:08:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:08:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 406 transitions. [2023-08-27 10:08:20,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068664169787765 [2023-08-27 10:08:20,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 406 transitions. [2023-08-27 10:08:20,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 406 transitions. [2023-08-27 10:08:20,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:20,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 406 transitions. [2023-08-27 10:08:20,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:20,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:20,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:20,170 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 86 flow. Second operand 3 states and 406 transitions. [2023-08-27 10:08:20,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 253 flow [2023-08-27 10:08:20,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 10:08:20,177 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 129 flow [2023-08-27 10:08:20,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-27 10:08:20,181 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-27 10:08:20,181 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 129 flow [2023-08-27 10:08:20,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:20,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:20,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:20,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 10:08:20,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:20,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:20,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1400287072, now seen corresponding path program 1 times [2023-08-27 10:08:20,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:20,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32559130] [2023-08-27 10:08:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:20,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:20,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:20,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32559130] [2023-08-27 10:08:20,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32559130] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:20,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:20,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:08:20,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418203057] [2023-08-27 10:08:20,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:20,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:08:20,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:20,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:08:20,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:08:20,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 267 [2023-08-27 10:08:20,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:20,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:20,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 267 [2023-08-27 10:08:20,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:21,689 INFO L124 PetriNetUnfolderBase]: 7832/11836 cut-off events. [2023-08-27 10:08:21,690 INFO L125 PetriNetUnfolderBase]: For 1067/1280 co-relation queries the response was YES. [2023-08-27 10:08:21,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28460 conditions, 11836 events. 7832/11836 cut-off events. For 1067/1280 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 78919 event pairs, 2347 based on Foata normal form. 0/9132 useless extension candidates. Maximal degree in co-relation 28449. Up to 8463 conditions per place. [2023-08-27 10:08:21,854 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 51 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-27 10:08:21,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 298 flow [2023-08-27 10:08:21,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:08:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:08:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2023-08-27 10:08:21,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043695380774033 [2023-08-27 10:08:21,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2023-08-27 10:08:21,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2023-08-27 10:08:21,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:21,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2023-08-27 10:08:21,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:21,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:21,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:21,865 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 129 flow. Second operand 3 states and 404 transitions. [2023-08-27 10:08:21,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 298 flow [2023-08-27 10:08:21,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:08:21,868 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 126 flow [2023-08-27 10:08:21,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-27 10:08:21,871 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-27 10:08:21,872 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 126 flow [2023-08-27 10:08:21,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:21,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:21,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:21,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 10:08:21,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:21,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1021018044, now seen corresponding path program 1 times [2023-08-27 10:08:21,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:21,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467263654] [2023-08-27 10:08:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:21,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:22,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467263654] [2023-08-27 10:08:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467263654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:22,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:22,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:08:22,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783407663] [2023-08-27 10:08:22,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:22,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:08:22,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:22,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:08:22,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:08:22,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-08-27 10:08:22,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:22,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:22,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-08-27 10:08:22,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:22,980 INFO L124 PetriNetUnfolderBase]: 6091/8492 cut-off events. [2023-08-27 10:08:22,980 INFO L125 PetriNetUnfolderBase]: For 942/942 co-relation queries the response was YES. [2023-08-27 10:08:22,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20640 conditions, 8492 events. 6091/8492 cut-off events. For 942/942 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 45437 event pairs, 1525 based on Foata normal form. 0/6745 useless extension candidates. Maximal degree in co-relation 20628. Up to 7072 conditions per place. [2023-08-27 10:08:23,029 INFO L140 encePairwiseOnDemand]: 258/267 looper letters, 45 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2023-08-27 10:08:23,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 54 transitions, 254 flow [2023-08-27 10:08:23,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:08:23,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:08:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 510 transitions. [2023-08-27 10:08:23,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47752808988764045 [2023-08-27 10:08:23,032 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 510 transitions. [2023-08-27 10:08:23,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 510 transitions. [2023-08-27 10:08:23,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:23,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 510 transitions. [2023-08-27 10:08:23,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:23,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:23,036 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:23,036 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 126 flow. Second operand 4 states and 510 transitions. [2023-08-27 10:08:23,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 54 transitions, 254 flow [2023-08-27 10:08:23,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:08:23,040 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 116 flow [2023-08-27 10:08:23,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2023-08-27 10:08:23,042 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-08-27 10:08:23,042 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 116 flow [2023-08-27 10:08:23,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:23,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:23,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:23,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 10:08:23,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:23,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:23,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1136499779, now seen corresponding path program 1 times [2023-08-27 10:08:23,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:23,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877210808] [2023-08-27 10:08:23,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:23,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:23,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:23,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877210808] [2023-08-27 10:08:23,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877210808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:23,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:23,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:08:23,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419311806] [2023-08-27 10:08:23,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:23,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:08:23,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:23,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:08:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:08:23,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-08-27 10:08:23,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:23,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:23,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-08-27 10:08:23,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:23,844 INFO L124 PetriNetUnfolderBase]: 3967/5596 cut-off events. [2023-08-27 10:08:23,844 INFO L125 PetriNetUnfolderBase]: For 1564/1564 co-relation queries the response was YES. [2023-08-27 10:08:23,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13492 conditions, 5596 events. 3967/5596 cut-off events. For 1564/1564 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 28384 event pairs, 996 based on Foata normal form. 0/4993 useless extension candidates. Maximal degree in co-relation 13480. Up to 2093 conditions per place. [2023-08-27 10:08:23,880 INFO L140 encePairwiseOnDemand]: 258/267 looper letters, 61 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-08-27 10:08:23,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 74 transitions, 350 flow [2023-08-27 10:08:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:08:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:08:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 530 transitions. [2023-08-27 10:08:23,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49625468164794007 [2023-08-27 10:08:23,883 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 530 transitions. [2023-08-27 10:08:23,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 530 transitions. [2023-08-27 10:08:23,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:23,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 530 transitions. [2023-08-27 10:08:23,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:23,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:23,888 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:23,888 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 116 flow. Second operand 4 states and 530 transitions. [2023-08-27 10:08:23,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 74 transitions, 350 flow [2023-08-27 10:08:23,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 74 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:08:23,892 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 168 flow [2023-08-27 10:08:23,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-27 10:08:23,893 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-08-27 10:08:23,893 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 168 flow [2023-08-27 10:08:23,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:23,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:23,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:23,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 10:08:23,894 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:23,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1263334048, now seen corresponding path program 1 times [2023-08-27 10:08:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:23,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387894779] [2023-08-27 10:08:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:23,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:24,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:24,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387894779] [2023-08-27 10:08:24,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387894779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:24,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:24,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:08:24,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952818168] [2023-08-27 10:08:24,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:24,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:08:24,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:24,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:08:24,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:08:24,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 267 [2023-08-27 10:08:24,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:24,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:24,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 267 [2023-08-27 10:08:24,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:25,998 INFO L124 PetriNetUnfolderBase]: 14610/20144 cut-off events. [2023-08-27 10:08:25,999 INFO L125 PetriNetUnfolderBase]: For 13716/13716 co-relation queries the response was YES. [2023-08-27 10:08:26,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54758 conditions, 20144 events. 14610/20144 cut-off events. For 13716/13716 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 108807 event pairs, 1158 based on Foata normal form. 0/18921 useless extension candidates. Maximal degree in co-relation 54745. Up to 14063 conditions per place. [2023-08-27 10:08:26,111 INFO L140 encePairwiseOnDemand]: 254/267 looper letters, 84 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2023-08-27 10:08:26,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 98 transitions, 588 flow [2023-08-27 10:08:26,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:08:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:08:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 494 transitions. [2023-08-27 10:08:26,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46254681647940077 [2023-08-27 10:08:26,114 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 494 transitions. [2023-08-27 10:08:26,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 494 transitions. [2023-08-27 10:08:26,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:26,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 494 transitions. [2023-08-27 10:08:26,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:26,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:26,119 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:26,119 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 168 flow. Second operand 4 states and 494 transitions. [2023-08-27 10:08:26,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 98 transitions, 588 flow [2023-08-27 10:08:26,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 98 transitions, 546 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-27 10:08:26,136 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 258 flow [2023-08-27 10:08:26,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2023-08-27 10:08:26,138 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-27 10:08:26,138 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 258 flow [2023-08-27 10:08:26,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:26,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:26,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:26,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 10:08:26,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:26,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash -508652217, now seen corresponding path program 1 times [2023-08-27 10:08:26,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:26,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355224200] [2023-08-27 10:08:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:26,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:26,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:26,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355224200] [2023-08-27 10:08:26,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355224200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:26,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:26,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:08:26,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90304107] [2023-08-27 10:08:26,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:26,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:08:26,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:08:26,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:08:26,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 267 [2023-08-27 10:08:26,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:26,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:26,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 267 [2023-08-27 10:08:26,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:27,495 INFO L124 PetriNetUnfolderBase]: 9462/13529 cut-off events. [2023-08-27 10:08:27,495 INFO L125 PetriNetUnfolderBase]: For 13232/13447 co-relation queries the response was YES. [2023-08-27 10:08:27,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44743 conditions, 13529 events. 9462/13529 cut-off events. For 13232/13447 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 77069 event pairs, 2512 based on Foata normal form. 175/12951 useless extension candidates. Maximal degree in co-relation 44727. Up to 8318 conditions per place. [2023-08-27 10:08:27,564 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 69 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-08-27 10:08:27,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 541 flow [2023-08-27 10:08:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:08:27,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:08:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-08-27 10:08:27,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49563046192259674 [2023-08-27 10:08:27,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-08-27 10:08:27,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-08-27 10:08:27,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:27,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-08-27 10:08:27,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:27,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:27,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:27,576 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 258 flow. Second operand 3 states and 397 transitions. [2023-08-27 10:08:27,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 541 flow [2023-08-27 10:08:27,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 80 transitions, 541 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 10:08:27,582 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 269 flow [2023-08-27 10:08:27,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-08-27 10:08:27,583 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2023-08-27 10:08:27,583 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 269 flow [2023-08-27 10:08:27,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:27,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:27,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:27,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 10:08:27,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:27,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:27,584 INFO L85 PathProgramCache]: Analyzing trace with hash -315161571, now seen corresponding path program 1 times [2023-08-27 10:08:27,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:27,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62915330] [2023-08-27 10:08:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:27,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:28,025 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 10:08:28,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:28,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62915330] [2023-08-27 10:08:28,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62915330] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:28,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:28,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:08:28,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877597181] [2023-08-27 10:08:28,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:28,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:08:28,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:28,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:08:28,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:08:28,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 267 [2023-08-27 10:08:28,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:28,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:28,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 267 [2023-08-27 10:08:28,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:29,553 INFO L124 PetriNetUnfolderBase]: 11530/16520 cut-off events. [2023-08-27 10:08:29,554 INFO L125 PetriNetUnfolderBase]: For 17410/17628 co-relation queries the response was YES. [2023-08-27 10:08:29,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55391 conditions, 16520 events. 11530/16520 cut-off events. For 17410/17628 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 96380 event pairs, 2102 based on Foata normal form. 81/15692 useless extension candidates. Maximal degree in co-relation 55372. Up to 13906 conditions per place. [2023-08-27 10:08:29,672 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 67 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-08-27 10:08:29,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 525 flow [2023-08-27 10:08:29,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:08:29,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:08:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-08-27 10:08:29,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48064918851435706 [2023-08-27 10:08:29,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-08-27 10:08:29,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-08-27 10:08:29,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:29,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-08-27 10:08:29,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:29,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:29,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:29,679 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 269 flow. Second operand 3 states and 385 transitions. [2023-08-27 10:08:29,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 525 flow [2023-08-27 10:08:29,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 515 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:08:29,691 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 295 flow [2023-08-27 10:08:29,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2023-08-27 10:08:29,691 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2023-08-27 10:08:29,691 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 295 flow [2023-08-27 10:08:29,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:29,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:29,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:29,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 10:08:29,692 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:29,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1180077866, now seen corresponding path program 1 times [2023-08-27 10:08:29,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:29,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235541428] [2023-08-27 10:08:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:29,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:30,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:30,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235541428] [2023-08-27 10:08:30,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235541428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:30,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:30,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:08:30,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800718289] [2023-08-27 10:08:30,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:30,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:08:30,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:30,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:08:30,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:08:30,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 267 [2023-08-27 10:08:30,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:30,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:30,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 267 [2023-08-27 10:08:30,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:31,993 INFO L124 PetriNetUnfolderBase]: 14640/20201 cut-off events. [2023-08-27 10:08:31,993 INFO L125 PetriNetUnfolderBase]: For 20704/20704 co-relation queries the response was YES. [2023-08-27 10:08:32,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71745 conditions, 20201 events. 14640/20201 cut-off events. For 20704/20704 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 107923 event pairs, 1232 based on Foata normal form. 51/19624 useless extension candidates. Maximal degree in co-relation 71725. Up to 12244 conditions per place. [2023-08-27 10:08:32,116 INFO L140 encePairwiseOnDemand]: 253/267 looper letters, 118 selfloop transitions, 37 changer transitions 0/155 dead transitions. [2023-08-27 10:08:32,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 155 transitions, 1093 flow [2023-08-27 10:08:32,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:08:32,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:08:32,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 616 transitions. [2023-08-27 10:08:32,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46142322097378274 [2023-08-27 10:08:32,119 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 616 transitions. [2023-08-27 10:08:32,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 616 transitions. [2023-08-27 10:08:32,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:32,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 616 transitions. [2023-08-27 10:08:32,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:32,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:32,123 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:32,124 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 295 flow. Second operand 5 states and 616 transitions. [2023-08-27 10:08:32,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 155 transitions, 1093 flow [2023-08-27 10:08:32,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 155 transitions, 1087 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:08:32,134 INFO L231 Difference]: Finished difference. Result has 63 places, 83 transitions, 624 flow [2023-08-27 10:08:32,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=624, PETRI_PLACES=63, PETRI_TRANSITIONS=83} [2023-08-27 10:08:32,135 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2023-08-27 10:08:32,135 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 83 transitions, 624 flow [2023-08-27 10:08:32,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:32,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:32,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:32,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 10:08:32,136 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:32,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash -7772266, now seen corresponding path program 2 times [2023-08-27 10:08:32,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:32,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328348561] [2023-08-27 10:08:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:32,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:32,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:32,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328348561] [2023-08-27 10:08:32,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328348561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:32,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:32,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:08:32,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24357799] [2023-08-27 10:08:32,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:32,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:08:32,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:32,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:08:32,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:08:32,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-08-27 10:08:32,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 83 transitions, 624 flow. Second operand has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:32,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:32,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-08-27 10:08:32,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:34,094 INFO L124 PetriNetUnfolderBase]: 12625/18051 cut-off events. [2023-08-27 10:08:34,094 INFO L125 PetriNetUnfolderBase]: For 45717/46167 co-relation queries the response was YES. [2023-08-27 10:08:34,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77370 conditions, 18051 events. 12625/18051 cut-off events. For 45717/46167 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 104392 event pairs, 1860 based on Foata normal form. 178/17469 useless extension candidates. Maximal degree in co-relation 77345. Up to 12809 conditions per place. [2023-08-27 10:08:34,239 INFO L140 encePairwiseOnDemand]: 261/267 looper letters, 102 selfloop transitions, 16 changer transitions 0/133 dead transitions. [2023-08-27 10:08:34,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 133 transitions, 1156 flow [2023-08-27 10:08:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:08:34,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:08:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 520 transitions. [2023-08-27 10:08:34,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868913857677903 [2023-08-27 10:08:34,241 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 520 transitions. [2023-08-27 10:08:34,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 520 transitions. [2023-08-27 10:08:34,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:34,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 520 transitions. [2023-08-27 10:08:34,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:34,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:34,245 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:34,245 INFO L175 Difference]: Start difference. First operand has 63 places, 83 transitions, 624 flow. Second operand 4 states and 520 transitions. [2023-08-27 10:08:34,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 133 transitions, 1156 flow [2023-08-27 10:08:34,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 133 transitions, 1156 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 10:08:34,276 INFO L231 Difference]: Finished difference. Result has 67 places, 90 transitions, 733 flow [2023-08-27 10:08:34,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=733, PETRI_PLACES=67, PETRI_TRANSITIONS=90} [2023-08-27 10:08:34,277 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-08-27 10:08:34,277 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 90 transitions, 733 flow [2023-08-27 10:08:34,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:34,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:34,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:34,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 10:08:34,278 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:34,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:34,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1180075634, now seen corresponding path program 1 times [2023-08-27 10:08:34,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:34,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102487923] [2023-08-27 10:08:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:34,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:34,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:34,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102487923] [2023-08-27 10:08:34,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102487923] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:34,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:34,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:08:34,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850166607] [2023-08-27 10:08:34,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:34,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:08:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:34,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:08:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:08:34,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-08-27 10:08:34,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 90 transitions, 733 flow. Second operand has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:34,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:34,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-08-27 10:08:34,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:36,383 INFO L124 PetriNetUnfolderBase]: 13114/18675 cut-off events. [2023-08-27 10:08:36,384 INFO L125 PetriNetUnfolderBase]: For 58611/59245 co-relation queries the response was YES. [2023-08-27 10:08:36,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83800 conditions, 18675 events. 13114/18675 cut-off events. For 58611/59245 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 108549 event pairs, 1650 based on Foata normal form. 266/18050 useless extension candidates. Maximal degree in co-relation 83772. Up to 14221 conditions per place. [2023-08-27 10:08:36,683 INFO L140 encePairwiseOnDemand]: 261/267 looper letters, 113 selfloop transitions, 13 changer transitions 0/141 dead transitions. [2023-08-27 10:08:36,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 141 transitions, 1319 flow [2023-08-27 10:08:36,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:08:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:08:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 516 transitions. [2023-08-27 10:08:36,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48314606741573035 [2023-08-27 10:08:36,686 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 516 transitions. [2023-08-27 10:08:36,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 516 transitions. [2023-08-27 10:08:36,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:36,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 516 transitions. [2023-08-27 10:08:36,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:36,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:36,690 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:36,690 INFO L175 Difference]: Start difference. First operand has 67 places, 90 transitions, 733 flow. Second operand 4 states and 516 transitions. [2023-08-27 10:08:36,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 141 transitions, 1319 flow [2023-08-27 10:08:36,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 141 transitions, 1303 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 10:08:36,725 INFO L231 Difference]: Finished difference. Result has 70 places, 97 transitions, 823 flow [2023-08-27 10:08:36,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=823, PETRI_PLACES=70, PETRI_TRANSITIONS=97} [2023-08-27 10:08:36,726 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-08-27 10:08:36,726 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 97 transitions, 823 flow [2023-08-27 10:08:36,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:36,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:36,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:36,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 10:08:36,727 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:36,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:36,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2070324862, now seen corresponding path program 1 times [2023-08-27 10:08:36,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:36,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567272315] [2023-08-27 10:08:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:36,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:37,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:37,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567272315] [2023-08-27 10:08:37,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567272315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:37,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:37,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:08:37,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123609974] [2023-08-27 10:08:37,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:37,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:08:37,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:08:37,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:08:37,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-08-27 10:08:37,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 97 transitions, 823 flow. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:37,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:37,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-08-27 10:08:37,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:39,360 INFO L124 PetriNetUnfolderBase]: 13055/18648 cut-off events. [2023-08-27 10:08:39,361 INFO L125 PetriNetUnfolderBase]: For 69017/69487 co-relation queries the response was YES. [2023-08-27 10:08:39,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86205 conditions, 18648 events. 13055/18648 cut-off events. For 69017/69487 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 108196 event pairs, 1803 based on Foata normal form. 227/18130 useless extension candidates. Maximal degree in co-relation 86175. Up to 13294 conditions per place. [2023-08-27 10:08:39,480 INFO L140 encePairwiseOnDemand]: 259/267 looper letters, 107 selfloop transitions, 24 changer transitions 0/146 dead transitions. [2023-08-27 10:08:39,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 146 transitions, 1387 flow [2023-08-27 10:08:39,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:08:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:08:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 519 transitions. [2023-08-27 10:08:39,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4859550561797753 [2023-08-27 10:08:39,482 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 519 transitions. [2023-08-27 10:08:39,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 519 transitions. [2023-08-27 10:08:39,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:39,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 519 transitions. [2023-08-27 10:08:39,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:39,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:39,486 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:39,486 INFO L175 Difference]: Start difference. First operand has 70 places, 97 transitions, 823 flow. Second operand 4 states and 519 transitions. [2023-08-27 10:08:39,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 146 transitions, 1387 flow [2023-08-27 10:08:39,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 146 transitions, 1367 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 10:08:39,522 INFO L231 Difference]: Finished difference. Result has 73 places, 109 transitions, 1014 flow [2023-08-27 10:08:39,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1014, PETRI_PLACES=73, PETRI_TRANSITIONS=109} [2023-08-27 10:08:39,523 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-08-27 10:08:39,523 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 109 transitions, 1014 flow [2023-08-27 10:08:39,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:39,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:39,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:39,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 10:08:39,524 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:39,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:39,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2072290293, now seen corresponding path program 1 times [2023-08-27 10:08:39,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:39,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531616629] [2023-08-27 10:08:39,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:39,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:39,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:39,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531616629] [2023-08-27 10:08:39,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531616629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:39,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:39,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:08:39,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174698945] [2023-08-27 10:08:39,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:39,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:08:39,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:39,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:08:39,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:08:39,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 267 [2023-08-27 10:08:39,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 109 transitions, 1014 flow. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:39,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:39,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 267 [2023-08-27 10:08:39,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:41,910 INFO L124 PetriNetUnfolderBase]: 13998/19869 cut-off events. [2023-08-27 10:08:41,911 INFO L125 PetriNetUnfolderBase]: For 82373/83046 co-relation queries the response was YES. [2023-08-27 10:08:41,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96182 conditions, 19869 events. 13998/19869 cut-off events. For 82373/83046 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 115689 event pairs, 1918 based on Foata normal form. 237/19287 useless extension candidates. Maximal degree in co-relation 96150. Up to 13828 conditions per place. [2023-08-27 10:08:42,060 INFO L140 encePairwiseOnDemand]: 258/267 looper letters, 120 selfloop transitions, 32 changer transitions 0/167 dead transitions. [2023-08-27 10:08:42,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 167 transitions, 1664 flow [2023-08-27 10:08:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:08:42,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:08:42,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 636 transitions. [2023-08-27 10:08:42,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764044943820225 [2023-08-27 10:08:42,062 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 636 transitions. [2023-08-27 10:08:42,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 636 transitions. [2023-08-27 10:08:42,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:42,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 636 transitions. [2023-08-27 10:08:42,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:42,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:42,066 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:42,066 INFO L175 Difference]: Start difference. First operand has 73 places, 109 transitions, 1014 flow. Second operand 5 states and 636 transitions. [2023-08-27 10:08:42,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 167 transitions, 1664 flow [2023-08-27 10:08:42,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 167 transitions, 1649 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 10:08:42,141 INFO L231 Difference]: Finished difference. Result has 77 places, 117 transitions, 1166 flow [2023-08-27 10:08:42,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1166, PETRI_PLACES=77, PETRI_TRANSITIONS=117} [2023-08-27 10:08:42,141 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-08-27 10:08:42,141 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 117 transitions, 1166 flow [2023-08-27 10:08:42,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:42,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:42,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:42,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 10:08:42,142 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:42,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:42,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2003901813, now seen corresponding path program 2 times [2023-08-27 10:08:42,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:42,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495911103] [2023-08-27 10:08:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:42,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:42,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:42,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495911103] [2023-08-27 10:08:42,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495911103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:42,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:42,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:08:42,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867156652] [2023-08-27 10:08:42,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:42,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:08:42,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:42,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:08:42,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:08:42,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-08-27 10:08:42,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 117 transitions, 1166 flow. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:42,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:42,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-08-27 10:08:42,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:44,622 INFO L124 PetriNetUnfolderBase]: 14427/20451 cut-off events. [2023-08-27 10:08:44,622 INFO L125 PetriNetUnfolderBase]: For 107050/107730 co-relation queries the response was YES. [2023-08-27 10:08:44,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104897 conditions, 20451 events. 14427/20451 cut-off events. For 107050/107730 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 119292 event pairs, 1926 based on Foata normal form. 234/19848 useless extension candidates. Maximal degree in co-relation 104863. Up to 14028 conditions per place. [2023-08-27 10:08:44,766 INFO L140 encePairwiseOnDemand]: 258/267 looper letters, 122 selfloop transitions, 36 changer transitions 0/173 dead transitions. [2023-08-27 10:08:44,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 173 transitions, 1830 flow [2023-08-27 10:08:44,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:08:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:08:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 646 transitions. [2023-08-27 10:08:44,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48389513108614235 [2023-08-27 10:08:44,768 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 646 transitions. [2023-08-27 10:08:44,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 646 transitions. [2023-08-27 10:08:44,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:44,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 646 transitions. [2023-08-27 10:08:44,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:44,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:44,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:44,772 INFO L175 Difference]: Start difference. First operand has 77 places, 117 transitions, 1166 flow. Second operand 5 states and 646 transitions. [2023-08-27 10:08:44,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 173 transitions, 1830 flow [2023-08-27 10:08:44,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 173 transitions, 1765 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 10:08:44,874 INFO L231 Difference]: Finished difference. Result has 79 places, 123 transitions, 1272 flow [2023-08-27 10:08:44,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1272, PETRI_PLACES=79, PETRI_TRANSITIONS=123} [2023-08-27 10:08:44,875 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 29 predicate places. [2023-08-27 10:08:44,875 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 123 transitions, 1272 flow [2023-08-27 10:08:44,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:44,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:44,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:44,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 10:08:44,876 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:44,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:44,876 INFO L85 PathProgramCache]: Analyzing trace with hash 697618233, now seen corresponding path program 3 times [2023-08-27 10:08:44,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:44,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014614143] [2023-08-27 10:08:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:44,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:45,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:45,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014614143] [2023-08-27 10:08:45,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014614143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:45,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:45,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:08:45,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457136601] [2023-08-27 10:08:45,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:45,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:08:45,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:45,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:08:45,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:08:45,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 267 [2023-08-27 10:08:45,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 123 transitions, 1272 flow. Second operand has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:45,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:45,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 267 [2023-08-27 10:08:45,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:47,893 INFO L124 PetriNetUnfolderBase]: 16139/22909 cut-off events. [2023-08-27 10:08:47,894 INFO L125 PetriNetUnfolderBase]: For 135762/136541 co-relation queries the response was YES. [2023-08-27 10:08:47,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120485 conditions, 22909 events. 16139/22909 cut-off events. For 135762/136541 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 136582 event pairs, 2033 based on Foata normal form. 360/22290 useless extension candidates. Maximal degree in co-relation 120450. Up to 12296 conditions per place. [2023-08-27 10:08:48,109 INFO L140 encePairwiseOnDemand]: 258/267 looper letters, 132 selfloop transitions, 48 changer transitions 0/195 dead transitions. [2023-08-27 10:08:48,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 195 transitions, 2116 flow [2023-08-27 10:08:48,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:08:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:08:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 657 transitions. [2023-08-27 10:08:48,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49213483146067416 [2023-08-27 10:08:48,112 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 657 transitions. [2023-08-27 10:08:48,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 657 transitions. [2023-08-27 10:08:48,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:48,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 657 transitions. [2023-08-27 10:08:48,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:48,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:48,117 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:48,117 INFO L175 Difference]: Start difference. First operand has 79 places, 123 transitions, 1272 flow. Second operand 5 states and 657 transitions. [2023-08-27 10:08:48,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 195 transitions, 2116 flow [2023-08-27 10:08:48,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 195 transitions, 2047 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 10:08:48,278 INFO L231 Difference]: Finished difference. Result has 81 places, 129 transitions, 1431 flow [2023-08-27 10:08:48,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1431, PETRI_PLACES=81, PETRI_TRANSITIONS=129} [2023-08-27 10:08:48,278 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2023-08-27 10:08:48,279 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 129 transitions, 1431 flow [2023-08-27 10:08:48,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:48,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:48,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:48,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 10:08:48,279 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting P2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:48,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2045980501, now seen corresponding path program 1 times [2023-08-27 10:08:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:48,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136064695] [2023-08-27 10:08:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:48,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:48,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136064695] [2023-08-27 10:08:48,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136064695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:48,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:48,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:08:48,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407495032] [2023-08-27 10:08:48,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:48,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:08:48,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:48,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:08:48,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:08:48,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-08-27 10:08:48,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 129 transitions, 1431 flow. Second operand has 5 states, 5 states have (on average 116.8) internal successors, (584), 5 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:48,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:48,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-08-27 10:08:48,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:51,190 INFO L124 PetriNetUnfolderBase]: 14604/20332 cut-off events. [2023-08-27 10:08:51,191 INFO L125 PetriNetUnfolderBase]: For 181658/184345 co-relation queries the response was YES. [2023-08-27 10:08:51,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116679 conditions, 20332 events. 14604/20332 cut-off events. For 181658/184345 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 121078 event pairs, 1798 based on Foata normal form. 1223/21031 useless extension candidates. Maximal degree in co-relation 116643. Up to 9978 conditions per place. [2023-08-27 10:08:51,346 INFO L140 encePairwiseOnDemand]: 258/267 looper letters, 290 selfloop transitions, 13 changer transitions 0/322 dead transitions. [2023-08-27 10:08:51,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 322 transitions, 4385 flow [2023-08-27 10:08:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:08:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:08:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 662 transitions. [2023-08-27 10:08:51,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4958801498127341 [2023-08-27 10:08:51,348 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 662 transitions. [2023-08-27 10:08:51,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 662 transitions. [2023-08-27 10:08:51,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:51,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 662 transitions. [2023-08-27 10:08:51,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:51,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:51,352 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:51,352 INFO L175 Difference]: Start difference. First operand has 81 places, 129 transitions, 1431 flow. Second operand 5 states and 662 transitions. [2023-08-27 10:08:51,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 322 transitions, 4385 flow [2023-08-27 10:08:51,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 322 transitions, 4161 flow, removed 34 selfloop flow, removed 3 redundant places. [2023-08-27 10:08:51,510 INFO L231 Difference]: Finished difference. Result has 83 places, 133 transitions, 1427 flow [2023-08-27 10:08:51,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1427, PETRI_PLACES=83, PETRI_TRANSITIONS=133} [2023-08-27 10:08:51,511 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-08-27 10:08:51,511 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 133 transitions, 1427 flow [2023-08-27 10:08:51,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.8) internal successors, (584), 5 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:51,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:51,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:51,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 10:08:51,512 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:51,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:51,512 INFO L85 PathProgramCache]: Analyzing trace with hash -242387733, now seen corresponding path program 1 times [2023-08-27 10:08:51,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:51,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629187332] [2023-08-27 10:08:51,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:51,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:51,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:51,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629187332] [2023-08-27 10:08:51,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629187332] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:51,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:51,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:08:51,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740611909] [2023-08-27 10:08:51,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:51,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:08:51,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:51,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:08:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:08:51,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-08-27 10:08:51,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 133 transitions, 1427 flow. Second operand has 6 states, 6 states have (on average 116.83333333333333) internal successors, (701), 6 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:51,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:51,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-08-27 10:08:51,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:54,821 INFO L124 PetriNetUnfolderBase]: 16756/23631 cut-off events. [2023-08-27 10:08:54,821 INFO L125 PetriNetUnfolderBase]: For 154736/155682 co-relation queries the response was YES. [2023-08-27 10:08:54,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130740 conditions, 23631 events. 16756/23631 cut-off events. For 154736/155682 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 140879 event pairs, 2022 based on Foata normal form. 384/23586 useless extension candidates. Maximal degree in co-relation 130703. Up to 11395 conditions per place. [2023-08-27 10:08:55,052 INFO L140 encePairwiseOnDemand]: 258/267 looper letters, 139 selfloop transitions, 62 changer transitions 0/216 dead transitions. [2023-08-27 10:08:55,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 216 transitions, 2477 flow [2023-08-27 10:08:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:08:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:08:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 773 transitions. [2023-08-27 10:08:55,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48252184769038703 [2023-08-27 10:08:55,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 773 transitions. [2023-08-27 10:08:55,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 773 transitions. [2023-08-27 10:08:55,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:55,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 773 transitions. [2023-08-27 10:08:55,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:55,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 267.0) internal successors, (1869), 7 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:55,060 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 267.0) internal successors, (1869), 7 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:55,060 INFO L175 Difference]: Start difference. First operand has 83 places, 133 transitions, 1427 flow. Second operand 6 states and 773 transitions. [2023-08-27 10:08:55,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 216 transitions, 2477 flow [2023-08-27 10:08:55,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 216 transitions, 2383 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-08-27 10:08:55,899 INFO L231 Difference]: Finished difference. Result has 87 places, 145 transitions, 1747 flow [2023-08-27 10:08:55,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1747, PETRI_PLACES=87, PETRI_TRANSITIONS=145} [2023-08-27 10:08:55,900 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 37 predicate places. [2023-08-27 10:08:55,900 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 145 transitions, 1747 flow [2023-08-27 10:08:55,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.83333333333333) internal successors, (701), 6 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:55,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:08:55,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:08:55,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 10:08:55,901 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:08:55,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:08:55,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1991410333, now seen corresponding path program 2 times [2023-08-27 10:08:55,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:08:55,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756877851] [2023-08-27 10:08:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:08:55,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:08:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:08:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:08:56,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:08:56,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756877851] [2023-08-27 10:08:56,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756877851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:08:56,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:08:56,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 10:08:56,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889297140] [2023-08-27 10:08:56,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:08:56,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 10:08:56,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:08:56,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 10:08:56,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 10:08:56,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 267 [2023-08-27 10:08:56,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 145 transitions, 1747 flow. Second operand has 7 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:56,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:08:56,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 267 [2023-08-27 10:08:56,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:08:59,492 INFO L124 PetriNetUnfolderBase]: 17029/24052 cut-off events. [2023-08-27 10:08:59,492 INFO L125 PetriNetUnfolderBase]: For 191649/192605 co-relation queries the response was YES. [2023-08-27 10:08:59,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138961 conditions, 24052 events. 17029/24052 cut-off events. For 191649/192605 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 144381 event pairs, 2022 based on Foata normal form. 398/24021 useless extension candidates. Maximal degree in co-relation 138922. Up to 11470 conditions per place. [2023-08-27 10:08:59,684 INFO L140 encePairwiseOnDemand]: 258/267 looper letters, 140 selfloop transitions, 54 changer transitions 0/209 dead transitions. [2023-08-27 10:08:59,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 209 transitions, 2579 flow [2023-08-27 10:08:59,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:08:59,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:08:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2023-08-27 10:08:59,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47265917602996255 [2023-08-27 10:08:59,686 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2023-08-27 10:08:59,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2023-08-27 10:08:59,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:08:59,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2023-08-27 10:08:59,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:59,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:59,690 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:08:59,690 INFO L175 Difference]: Start difference. First operand has 87 places, 145 transitions, 1747 flow. Second operand 5 states and 631 transitions. [2023-08-27 10:08:59,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 209 transitions, 2579 flow [2023-08-27 10:09:00,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 209 transitions, 2503 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 10:09:00,406 INFO L231 Difference]: Finished difference. Result has 89 places, 149 transitions, 1897 flow [2023-08-27 10:09:00,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1897, PETRI_PLACES=89, PETRI_TRANSITIONS=149} [2023-08-27 10:09:00,406 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2023-08-27 10:09:00,406 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 149 transitions, 1897 flow [2023-08-27 10:09:00,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:00,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:09:00,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:09:00,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 10:09:00,407 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:09:00,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:09:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash -181428403, now seen corresponding path program 1 times [2023-08-27 10:09:00,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:09:00,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532254359] [2023-08-27 10:09:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:09:00,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:09:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:09:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:09:00,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:09:00,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532254359] [2023-08-27 10:09:00,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532254359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:09:00,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:09:00,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:09:00,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57650311] [2023-08-27 10:09:00,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:09:00,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:09:00,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:09:00,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:09:00,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:09:00,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 267 [2023-08-27 10:09:00,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 149 transitions, 1897 flow. Second operand has 5 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:00,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:09:00,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 267 [2023-08-27 10:09:00,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:09:05,155 INFO L124 PetriNetUnfolderBase]: 27041/37014 cut-off events. [2023-08-27 10:09:05,155 INFO L125 PetriNetUnfolderBase]: For 281094/281094 co-relation queries the response was YES. [2023-08-27 10:09:05,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214862 conditions, 37014 events. 27041/37014 cut-off events. For 281094/281094 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 212270 event pairs, 1245 based on Foata normal form. 184/37118 useless extension candidates. Maximal degree in co-relation 214822. Up to 16211 conditions per place. [2023-08-27 10:09:05,446 INFO L140 encePairwiseOnDemand]: 253/267 looper letters, 266 selfloop transitions, 118 changer transitions 0/384 dead transitions. [2023-08-27 10:09:05,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 384 transitions, 5364 flow [2023-08-27 10:09:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:09:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:09:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 714 transitions. [2023-08-27 10:09:05,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44569288389513106 [2023-08-27 10:09:05,448 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 714 transitions. [2023-08-27 10:09:05,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 714 transitions. [2023-08-27 10:09:05,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:09:05,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 714 transitions. [2023-08-27 10:09:05,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:05,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 267.0) internal successors, (1869), 7 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:05,453 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 267.0) internal successors, (1869), 7 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:05,453 INFO L175 Difference]: Start difference. First operand has 89 places, 149 transitions, 1897 flow. Second operand 6 states and 714 transitions. [2023-08-27 10:09:05,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 384 transitions, 5364 flow [2023-08-27 10:09:06,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 384 transitions, 5198 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-27 10:09:06,641 INFO L231 Difference]: Finished difference. Result has 96 places, 240 transitions, 3720 flow [2023-08-27 10:09:06,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3720, PETRI_PLACES=96, PETRI_TRANSITIONS=240} [2023-08-27 10:09:06,642 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2023-08-27 10:09:06,642 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 240 transitions, 3720 flow [2023-08-27 10:09:06,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:06,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:09:06,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:09:06,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 10:09:06,643 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:09:06,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:09:06,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1761223413, now seen corresponding path program 2 times [2023-08-27 10:09:06,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:09:06,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473943607] [2023-08-27 10:09:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:09:06,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:09:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:09:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:09:06,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:09:06,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473943607] [2023-08-27 10:09:06,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473943607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:09:06,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:09:06,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:09:06,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962287908] [2023-08-27 10:09:06,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:09:06,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:09:06,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:09:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:09:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:09:06,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 267 [2023-08-27 10:09:06,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 240 transitions, 3720 flow. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:06,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:09:06,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 267 [2023-08-27 10:09:06,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:09:10,697 INFO L124 PetriNetUnfolderBase]: 17679/25637 cut-off events. [2023-08-27 10:09:10,698 INFO L125 PetriNetUnfolderBase]: For 363312/370466 co-relation queries the response was YES. [2023-08-27 10:09:10,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166455 conditions, 25637 events. 17679/25637 cut-off events. For 363312/370466 co-relation queries the response was YES. Maximal size of possible extension queue 1477. Compared 170651 event pairs, 1915 based on Foata normal form. 4604/29237 useless extension candidates. Maximal degree in co-relation 166410. Up to 16601 conditions per place. [2023-08-27 10:09:10,913 INFO L140 encePairwiseOnDemand]: 260/267 looper letters, 481 selfloop transitions, 10 changer transitions 4/524 dead transitions. [2023-08-27 10:09:10,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 524 transitions, 9704 flow [2023-08-27 10:09:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:09:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:09:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 637 transitions. [2023-08-27 10:09:10,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4771535580524345 [2023-08-27 10:09:10,914 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 637 transitions. [2023-08-27 10:09:10,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 637 transitions. [2023-08-27 10:09:10,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:09:10,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 637 transitions. [2023-08-27 10:09:10,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:10,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:10,918 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:10,918 INFO L175 Difference]: Start difference. First operand has 96 places, 240 transitions, 3720 flow. Second operand 5 states and 637 transitions. [2023-08-27 10:09:10,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 524 transitions, 9704 flow [2023-08-27 10:09:12,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 524 transitions, 9704 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 10:09:12,115 INFO L231 Difference]: Finished difference. Result has 103 places, 231 transitions, 3619 flow [2023-08-27 10:09:12,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3619, PETRI_PLACES=103, PETRI_TRANSITIONS=231} [2023-08-27 10:09:12,116 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 53 predicate places. [2023-08-27 10:09:12,116 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 231 transitions, 3619 flow [2023-08-27 10:09:12,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:12,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:09:12,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:09:12,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 10:09:12,116 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:09:12,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:09:12,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2019542329, now seen corresponding path program 1 times [2023-08-27 10:09:12,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:09:12,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286343989] [2023-08-27 10:09:12,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:09:12,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:09:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:09:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:09:12,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:09:12,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286343989] [2023-08-27 10:09:12,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286343989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:09:12,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:09:12,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:09:12,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162427874] [2023-08-27 10:09:12,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:09:12,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:09:12,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:09:12,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:09:12,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:09:12,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 267 [2023-08-27 10:09:12,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 231 transitions, 3619 flow. Second operand has 5 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:12,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:09:12,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 267 [2023-08-27 10:09:12,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:09:15,186 INFO L124 PetriNetUnfolderBase]: 12505/18653 cut-off events. [2023-08-27 10:09:15,186 INFO L125 PetriNetUnfolderBase]: For 316089/323591 co-relation queries the response was YES. [2023-08-27 10:09:15,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124072 conditions, 18653 events. 12505/18653 cut-off events. For 316089/323591 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 125733 event pairs, 755 based on Foata normal form. 4029/21834 useless extension candidates. Maximal degree in co-relation 124022. Up to 9025 conditions per place. [2023-08-27 10:09:15,315 INFO L140 encePairwiseOnDemand]: 260/267 looper letters, 578 selfloop transitions, 19 changer transitions 4/627 dead transitions. [2023-08-27 10:09:15,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 627 transitions, 11825 flow [2023-08-27 10:09:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 10:09:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 10:09:15,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 890 transitions. [2023-08-27 10:09:15,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-27 10:09:15,317 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 890 transitions. [2023-08-27 10:09:15,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 890 transitions. [2023-08-27 10:09:15,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:09:15,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 890 transitions. [2023-08-27 10:09:15,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:15,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:15,322 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:15,322 INFO L175 Difference]: Start difference. First operand has 103 places, 231 transitions, 3619 flow. Second operand 7 states and 890 transitions. [2023-08-27 10:09:15,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 627 transitions, 11825 flow [2023-08-27 10:09:16,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 627 transitions, 11811 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:09:16,233 INFO L231 Difference]: Finished difference. Result has 110 places, 198 transitions, 3090 flow [2023-08-27 10:09:16,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3090, PETRI_PLACES=110, PETRI_TRANSITIONS=198} [2023-08-27 10:09:16,233 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 60 predicate places. [2023-08-27 10:09:16,233 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 198 transitions, 3090 flow [2023-08-27 10:09:16,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:16,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:09:16,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:09:16,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 10:09:16,234 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:09:16,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:09:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1972238989, now seen corresponding path program 1 times [2023-08-27 10:09:16,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:09:16,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072473532] [2023-08-27 10:09:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:09:16,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:09:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:09:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:09:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:09:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072473532] [2023-08-27 10:09:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072473532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:09:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:09:16,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:09:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85404641] [2023-08-27 10:09:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:09:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:09:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:09:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:09:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:09:16,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 267 [2023-08-27 10:09:16,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 198 transitions, 3090 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:16,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:09:16,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 267 [2023-08-27 10:09:16,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:09:20,607 INFO L124 PetriNetUnfolderBase]: 19790/29481 cut-off events. [2023-08-27 10:09:20,607 INFO L125 PetriNetUnfolderBase]: For 331543/331543 co-relation queries the response was YES. [2023-08-27 10:09:20,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195710 conditions, 29481 events. 19790/29481 cut-off events. For 331543/331543 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 195206 event pairs, 4950 based on Foata normal form. 55/29364 useless extension candidates. Maximal degree in co-relation 195657. Up to 15317 conditions per place. [2023-08-27 10:09:20,923 INFO L140 encePairwiseOnDemand]: 255/267 looper letters, 264 selfloop transitions, 87 changer transitions 4/355 dead transitions. [2023-08-27 10:09:20,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 355 transitions, 5930 flow [2023-08-27 10:09:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:09:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:09:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 497 transitions. [2023-08-27 10:09:20,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653558052434457 [2023-08-27 10:09:20,925 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 497 transitions. [2023-08-27 10:09:20,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 497 transitions. [2023-08-27 10:09:20,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:09:20,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 497 transitions. [2023-08-27 10:09:20,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:20,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:20,928 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:20,928 INFO L175 Difference]: Start difference. First operand has 110 places, 198 transitions, 3090 flow. Second operand 4 states and 497 transitions. [2023-08-27 10:09:20,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 355 transitions, 5930 flow [2023-08-27 10:09:23,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 355 transitions, 5862 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 10:09:23,559 INFO L231 Difference]: Finished difference. Result has 112 places, 255 transitions, 4648 flow [2023-08-27 10:09:23,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4648, PETRI_PLACES=112, PETRI_TRANSITIONS=255} [2023-08-27 10:09:23,560 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 62 predicate places. [2023-08-27 10:09:23,560 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 255 transitions, 4648 flow [2023-08-27 10:09:23,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:23,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:09:23,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:09:23,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 10:09:23,560 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:09:23,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:09:23,561 INFO L85 PathProgramCache]: Analyzing trace with hash -236522956, now seen corresponding path program 1 times [2023-08-27 10:09:23,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:09:23,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668724076] [2023-08-27 10:09:23,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:09:23,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:09:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:09:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:09:23,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:09:23,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668724076] [2023-08-27 10:09:23,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668724076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:09:23,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:09:23,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 10:09:23,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095775243] [2023-08-27 10:09:23,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:09:23,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:09:23,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:09:23,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:09:23,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:09:23,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 267 [2023-08-27 10:09:23,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 255 transitions, 4648 flow. Second operand has 6 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:23,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:09:23,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 267 [2023-08-27 10:09:23,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:09:27,093 INFO L124 PetriNetUnfolderBase]: 14301/21482 cut-off events. [2023-08-27 10:09:27,093 INFO L125 PetriNetUnfolderBase]: For 382018/390705 co-relation queries the response was YES. [2023-08-27 10:09:27,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149583 conditions, 21482 events. 14301/21482 cut-off events. For 382018/390705 co-relation queries the response was YES. Maximal size of possible extension queue 1432. Compared 151945 event pairs, 652 based on Foata normal form. 3398/23749 useless extension candidates. Maximal degree in co-relation 149527. Up to 10296 conditions per place. [2023-08-27 10:09:27,281 INFO L140 encePairwiseOnDemand]: 260/267 looper letters, 615 selfloop transitions, 28 changer transitions 4/676 dead transitions. [2023-08-27 10:09:27,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 676 transitions, 13542 flow [2023-08-27 10:09:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 10:09:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 10:09:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1141 transitions. [2023-08-27 10:09:27,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47482313774448603 [2023-08-27 10:09:27,284 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1141 transitions. [2023-08-27 10:09:27,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1141 transitions. [2023-08-27 10:09:27,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:09:27,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1141 transitions. [2023-08-27 10:09:27,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:27,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:27,289 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:27,290 INFO L175 Difference]: Start difference. First operand has 112 places, 255 transitions, 4648 flow. Second operand 9 states and 1141 transitions. [2023-08-27 10:09:27,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 676 transitions, 13542 flow [2023-08-27 10:09:29,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 676 transitions, 12984 flow, removed 95 selfloop flow, removed 6 redundant places. [2023-08-27 10:09:29,691 INFO L231 Difference]: Finished difference. Result has 117 places, 195 transitions, 3151 flow [2023-08-27 10:09:29,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3151, PETRI_PLACES=117, PETRI_TRANSITIONS=195} [2023-08-27 10:09:29,692 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 67 predicate places. [2023-08-27 10:09:29,692 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 195 transitions, 3151 flow [2023-08-27 10:09:29,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:29,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:09:29,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:09:29,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 10:09:29,693 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:09:29,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:09:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1643827893, now seen corresponding path program 1 times [2023-08-27 10:09:29,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:09:29,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180681147] [2023-08-27 10:09:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:09:29,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:09:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:09:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:09:29,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:09:29,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180681147] [2023-08-27 10:09:29,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180681147] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:09:29,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:09:29,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:09:29,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072020794] [2023-08-27 10:09:29,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:09:29,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:09:29,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:09:29,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:09:29,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:09:29,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-08-27 10:09:29,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 195 transitions, 3151 flow. Second operand has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:29,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:09:29,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-08-27 10:09:29,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:09:32,515 INFO L124 PetriNetUnfolderBase]: 13731/20850 cut-off events. [2023-08-27 10:09:32,515 INFO L125 PetriNetUnfolderBase]: For 312082/317814 co-relation queries the response was YES. [2023-08-27 10:09:32,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149884 conditions, 20850 events. 13731/20850 cut-off events. For 312082/317814 co-relation queries the response was YES. Maximal size of possible extension queue 1379. Compared 149095 event pairs, 1421 based on Foata normal form. 1487/21487 useless extension candidates. Maximal degree in co-relation 149827. Up to 10097 conditions per place. [2023-08-27 10:09:32,638 INFO L140 encePairwiseOnDemand]: 258/267 looper letters, 149 selfloop transitions, 26 changer transitions 200/397 dead transitions. [2023-08-27 10:09:32,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 397 transitions, 7469 flow [2023-08-27 10:09:32,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:09:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:09:32,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 767 transitions. [2023-08-27 10:09:32,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787765293383271 [2023-08-27 10:09:32,641 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 767 transitions. [2023-08-27 10:09:32,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 767 transitions. [2023-08-27 10:09:32,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:09:32,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 767 transitions. [2023-08-27 10:09:32,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:32,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 267.0) internal successors, (1869), 7 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:32,644 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 267.0) internal successors, (1869), 7 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:32,644 INFO L175 Difference]: Start difference. First operand has 117 places, 195 transitions, 3151 flow. Second operand 6 states and 767 transitions. [2023-08-27 10:09:32,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 397 transitions, 7469 flow [2023-08-27 10:09:36,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 397 transitions, 7378 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-27 10:09:36,219 INFO L231 Difference]: Finished difference. Result has 111 places, 110 transitions, 1474 flow [2023-08-27 10:09:36,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=3050, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1474, PETRI_PLACES=111, PETRI_TRANSITIONS=110} [2023-08-27 10:09:36,219 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 61 predicate places. [2023-08-27 10:09:36,219 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 110 transitions, 1474 flow [2023-08-27 10:09:36,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:36,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:09:36,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:09:36,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 10:09:36,220 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:09:36,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:09:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2024095825, now seen corresponding path program 1 times [2023-08-27 10:09:36,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:09:36,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910321830] [2023-08-27 10:09:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:09:36,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:09:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:09:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:09:36,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:09:36,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910321830] [2023-08-27 10:09:36,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910321830] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:09:36,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:09:36,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 10:09:36,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870141202] [2023-08-27 10:09:36,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:09:36,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 10:09:36,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:09:36,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 10:09:36,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 10:09:36,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 267 [2023-08-27 10:09:36,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 110 transitions, 1474 flow. Second operand has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:36,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:09:36,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 267 [2023-08-27 10:09:36,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:09:38,419 INFO L124 PetriNetUnfolderBase]: 10321/16018 cut-off events. [2023-08-27 10:09:38,419 INFO L125 PetriNetUnfolderBase]: For 220949/225935 co-relation queries the response was YES. [2023-08-27 10:09:38,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107201 conditions, 16018 events. 10321/16018 cut-off events. For 220949/225935 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 116807 event pairs, 550 based on Foata normal form. 1306/16632 useless extension candidates. Maximal degree in co-relation 107144. Up to 7530 conditions per place. [2023-08-27 10:09:38,508 INFO L140 encePairwiseOnDemand]: 260/267 looper letters, 167 selfloop transitions, 29 changer transitions 160/366 dead transitions. [2023-08-27 10:09:38,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 366 transitions, 5881 flow [2023-08-27 10:09:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 10:09:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 10:09:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1355 transitions. [2023-08-27 10:09:38,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4613551242764726 [2023-08-27 10:09:38,510 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1355 transitions. [2023-08-27 10:09:38,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1355 transitions. [2023-08-27 10:09:38,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:09:38,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1355 transitions. [2023-08-27 10:09:38,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 123.18181818181819) internal successors, (1355), 11 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:38,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:38,514 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:38,514 INFO L175 Difference]: Start difference. First operand has 111 places, 110 transitions, 1474 flow. Second operand 11 states and 1355 transitions. [2023-08-27 10:09:38,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 366 transitions, 5881 flow [2023-08-27 10:09:40,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 366 transitions, 5256 flow, removed 68 selfloop flow, removed 13 redundant places. [2023-08-27 10:09:40,931 INFO L231 Difference]: Finished difference. Result has 111 places, 84 transitions, 926 flow [2023-08-27 10:09:40,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=926, PETRI_PLACES=111, PETRI_TRANSITIONS=84} [2023-08-27 10:09:40,932 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 61 predicate places. [2023-08-27 10:09:40,932 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 84 transitions, 926 flow [2023-08-27 10:09:40,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:40,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:09:40,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:09:40,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 10:09:40,933 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:09:40,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:09:40,933 INFO L85 PathProgramCache]: Analyzing trace with hash 235710014, now seen corresponding path program 1 times [2023-08-27 10:09:40,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:09:40,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334249265] [2023-08-27 10:09:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:09:40,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:09:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:09:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:09:41,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:09:41,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334249265] [2023-08-27 10:09:41,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334249265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:09:41,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:09:41,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:09:41,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007597062] [2023-08-27 10:09:41,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:09:41,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:09:41,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:09:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:09:41,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:09:41,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 267 [2023-08-27 10:09:41,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 84 transitions, 926 flow. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:41,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:09:41,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 267 [2023-08-27 10:09:41,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:09:41,683 INFO L124 PetriNetUnfolderBase]: 2866/4780 cut-off events. [2023-08-27 10:09:41,683 INFO L125 PetriNetUnfolderBase]: For 38084/38196 co-relation queries the response was YES. [2023-08-27 10:09:41,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29897 conditions, 4780 events. 2866/4780 cut-off events. For 38084/38196 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 29735 event pairs, 732 based on Foata normal form. 27/4751 useless extension candidates. Maximal degree in co-relation 29856. Up to 2821 conditions per place. [2023-08-27 10:09:41,706 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 55 selfloop transitions, 1 changer transitions 102/162 dead transitions. [2023-08-27 10:09:41,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 162 transitions, 2072 flow [2023-08-27 10:09:41,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:09:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:09:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 515 transitions. [2023-08-27 10:09:41,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48220973782771537 [2023-08-27 10:09:41,708 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 515 transitions. [2023-08-27 10:09:41,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 515 transitions. [2023-08-27 10:09:41,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:09:41,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 515 transitions. [2023-08-27 10:09:41,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:41,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:41,709 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:41,709 INFO L175 Difference]: Start difference. First operand has 111 places, 84 transitions, 926 flow. Second operand 4 states and 515 transitions. [2023-08-27 10:09:41,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 162 transitions, 2072 flow [2023-08-27 10:09:41,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 162 transitions, 1778 flow, removed 60 selfloop flow, removed 16 redundant places. [2023-08-27 10:09:41,822 INFO L231 Difference]: Finished difference. Result has 97 places, 52 transitions, 456 flow [2023-08-27 10:09:41,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=456, PETRI_PLACES=97, PETRI_TRANSITIONS=52} [2023-08-27 10:09:41,823 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2023-08-27 10:09:41,823 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 52 transitions, 456 flow [2023-08-27 10:09:41,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:41,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:09:41,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:09:41,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 10:09:41,824 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:09:41,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:09:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash 206498894, now seen corresponding path program 2 times [2023-08-27 10:09:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:09:41,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629174884] [2023-08-27 10:09:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:09:41,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:09:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:09:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:09:42,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:09:42,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629174884] [2023-08-27 10:09:42,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629174884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:09:42,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:09:42,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:09:42,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600502104] [2023-08-27 10:09:42,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:09:42,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:09:42,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:09:42,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:09:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:09:42,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 267 [2023-08-27 10:09:42,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 52 transitions, 456 flow. Second operand has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:42,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:09:42,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 267 [2023-08-27 10:09:42,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:09:42,894 INFO L124 PetriNetUnfolderBase]: 493/881 cut-off events. [2023-08-27 10:09:42,894 INFO L125 PetriNetUnfolderBase]: For 4392/4398 co-relation queries the response was YES. [2023-08-27 10:09:42,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4612 conditions, 881 events. 493/881 cut-off events. For 4392/4398 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3917 event pairs, 76 based on Foata normal form. 1/876 useless extension candidates. Maximal degree in co-relation 4577. Up to 523 conditions per place. [2023-08-27 10:09:42,898 INFO L140 encePairwiseOnDemand]: 261/267 looper letters, 57 selfloop transitions, 13 changer transitions 9/82 dead transitions. [2023-08-27 10:09:42,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 82 transitions, 824 flow [2023-08-27 10:09:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:09:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:09:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 599 transitions. [2023-08-27 10:09:42,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.448689138576779 [2023-08-27 10:09:42,900 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 599 transitions. [2023-08-27 10:09:42,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 599 transitions. [2023-08-27 10:09:42,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:09:42,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 599 transitions. [2023-08-27 10:09:42,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:42,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:42,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:42,902 INFO L175 Difference]: Start difference. First operand has 97 places, 52 transitions, 456 flow. Second operand 5 states and 599 transitions. [2023-08-27 10:09:42,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 82 transitions, 824 flow [2023-08-27 10:09:42,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 82 transitions, 677 flow, removed 40 selfloop flow, removed 25 redundant places. [2023-08-27 10:09:42,911 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 388 flow [2023-08-27 10:09:42,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=388, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2023-08-27 10:09:42,912 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 16 predicate places. [2023-08-27 10:09:42,912 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 388 flow [2023-08-27 10:09:42,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:42,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:09:42,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:09:42,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 10:09:42,912 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:09:42,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:09:42,913 INFO L85 PathProgramCache]: Analyzing trace with hash 768693476, now seen corresponding path program 3 times [2023-08-27 10:09:42,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:09:42,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465759130] [2023-08-27 10:09:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:09:42,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:09:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:09:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:09:43,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:09:43,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465759130] [2023-08-27 10:09:43,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465759130] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:09:43,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:09:43,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 10:09:43,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997276094] [2023-08-27 10:09:43,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:09:43,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 10:09:43,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:09:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 10:09:43,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 10:09:43,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 267 [2023-08-27 10:09:43,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 388 flow. Second operand has 7 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:43,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:09:43,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 267 [2023-08-27 10:09:43,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:09:43,739 INFO L124 PetriNetUnfolderBase]: 513/927 cut-off events. [2023-08-27 10:09:43,739 INFO L125 PetriNetUnfolderBase]: For 2773/2779 co-relation queries the response was YES. [2023-08-27 10:09:43,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4439 conditions, 927 events. 513/927 cut-off events. For 2773/2779 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4217 event pairs, 118 based on Foata normal form. 1/923 useless extension candidates. Maximal degree in co-relation 4413. Up to 491 conditions per place. [2023-08-27 10:09:43,742 INFO L140 encePairwiseOnDemand]: 262/267 looper letters, 52 selfloop transitions, 6 changer transitions 21/82 dead transitions. [2023-08-27 10:09:43,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 709 flow [2023-08-27 10:09:43,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:09:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:09:43,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 603 transitions. [2023-08-27 10:09:43,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451685393258427 [2023-08-27 10:09:43,744 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 603 transitions. [2023-08-27 10:09:43,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 603 transitions. [2023-08-27 10:09:43,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:09:43,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 603 transitions. [2023-08-27 10:09:43,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.6) internal successors, (603), 5 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:43,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:43,746 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:43,746 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 388 flow. Second operand 5 states and 603 transitions. [2023-08-27 10:09:43,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 709 flow [2023-08-27 10:09:43,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 82 transitions, 694 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-27 10:09:43,753 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 358 flow [2023-08-27 10:09:43,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2023-08-27 10:09:43,753 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-08-27 10:09:43,753 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 358 flow [2023-08-27 10:09:43,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:09:43,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:09:43,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:09:43,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 10:09:43,754 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 10:09:43,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:09:43,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1465882760, now seen corresponding path program 4 times [2023-08-27 10:09:43,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:09:43,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875568549] [2023-08-27 10:09:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:09:43,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:09:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 10:09:43,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 10:09:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 10:09:43,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 10:09:43,885 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 10:09:43,886 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (22 of 23 remaining) [2023-08-27 10:09:43,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-27 10:09:43,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-27 10:09:43,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-08-27 10:09:43,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-27 10:09:43,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONASSERT (17 of 23 remaining) [2023-08-27 10:09:43,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-27 10:09:43,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-27 10:09:43,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-08-27 10:09:43,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-08-27 10:09:43,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 23 remaining) [2023-08-27 10:09:43,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 23 remaining) [2023-08-27 10:09:43,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 23 remaining) [2023-08-27 10:09:43,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 23 remaining) [2023-08-27 10:09:43,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-08-27 10:09:43,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-08-27 10:09:43,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-08-27 10:09:43,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-27 10:09:43,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONASSERT (4 of 23 remaining) [2023-08-27 10:09:43,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-08-27 10:09:43,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-08-27 10:09:43,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-27 10:09:43,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-08-27 10:09:43,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 10:09:43,894 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:09:43,900 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 10:09:43,900 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 10:09:43,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:09:43 BasicIcfg [2023-08-27 10:09:43,981 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 10:09:43,981 INFO L158 Benchmark]: Toolchain (without parser) took 92437.23ms. Allocated memory was 339.7MB in the beginning and 10.8GB in the end (delta: 10.5GB). Free memory was 315.0MB in the beginning and 7.7GB in the end (delta: -7.4GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2023-08-27 10:09:43,981 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 339.7MB. Free memory is still 316.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:09:43,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.32ms. Allocated memory is still 339.7MB. Free memory was 314.5MB in the beginning and 291.0MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-27 10:09:43,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.42ms. Allocated memory is still 339.7MB. Free memory was 291.0MB in the beginning and 288.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:09:43,982 INFO L158 Benchmark]: Boogie Preprocessor took 53.40ms. Allocated memory is still 339.7MB. Free memory was 288.2MB in the beginning and 286.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:09:43,982 INFO L158 Benchmark]: RCFGBuilder took 694.93ms. Allocated memory is still 339.7MB. Free memory was 286.1MB in the beginning and 296.8MB in the end (delta: -10.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-27 10:09:43,983 INFO L158 Benchmark]: TraceAbstraction took 91032.43ms. Allocated memory was 339.7MB in the beginning and 10.8GB in the end (delta: 10.5GB). Free memory was 295.6MB in the beginning and 7.7GB in the end (delta: -7.5GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2023-08-27 10:09:43,984 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 339.7MB. Free memory is still 316.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 570.32ms. Allocated memory is still 339.7MB. Free memory was 314.5MB in the beginning and 291.0MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 80.42ms. Allocated memory is still 339.7MB. Free memory was 291.0MB in the beginning and 288.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 53.40ms. Allocated memory is still 339.7MB. Free memory was 288.2MB in the beginning and 286.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 694.93ms. Allocated memory is still 339.7MB. Free memory was 286.1MB in the beginning and 296.8MB in the end (delta: -10.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 91032.43ms. Allocated memory was 339.7MB in the beginning and 10.8GB in the end (delta: 10.5GB). Free memory was 295.6MB in the beginning and 7.7GB in the end (delta: -7.5GB). Peak memory consumption was 3.0GB. 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: 4.7s, 149 PlacesBefore, 50 PlacesAfterwards, 139 TransitionsBefore, 37 TransitionsAfterwards, 4466 CoEnabledTransitionPairs, 7 FixpointIterations, 43 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 124 TotalNumberOfCompositions, 16684 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6921, independent: 6553, independent conditional: 0, independent unconditional: 6553, dependent: 368, dependent conditional: 0, dependent unconditional: 368, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2546, independent: 2471, independent conditional: 0, independent unconditional: 2471, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6921, independent: 4082, independent conditional: 0, independent unconditional: 4082, dependent: 293, dependent conditional: 0, dependent unconditional: 293, unknown: 2546, unknown conditional: 0, unknown unconditional: 2546] , Statistics on independence cache: Total cache size (in pairs): 240, Positive cache size: 212, Positive conditional cache size: 0, Positive unconditional cache size: 212, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 17]: assertion can be violated assertion can be violated We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p2_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int __unbuffered_p3_EBX = 0; [L718] 0 int a = 0; [L720] 0 int b = 0; [L721] 0 _Bool main$tmp_guard0; [L722] 0 _Bool main$tmp_guard1; [L724] 0 int x = 0; [L726] 0 int y = 0; [L727] 0 _Bool y$flush_delayed; [L728] 0 int y$mem_tmp; [L729] 0 _Bool y$r_buff0_thd0; [L730] 0 _Bool y$r_buff0_thd1; [L731] 0 _Bool y$r_buff0_thd2; [L732] 0 _Bool y$r_buff0_thd3; [L733] 0 _Bool y$r_buff0_thd4; [L734] 0 _Bool y$r_buff1_thd0; [L735] 0 _Bool y$r_buff1_thd1; [L736] 0 _Bool y$r_buff1_thd2; [L737] 0 _Bool y$r_buff1_thd3; [L738] 0 _Bool y$r_buff1_thd4; [L739] 0 _Bool y$read_delayed; [L740] 0 int *y$read_delayed_var; [L741] 0 int y$w_buff0; [L742] 0 _Bool y$w_buff0_used; [L743] 0 int y$w_buff1; [L744] 0 _Bool y$w_buff1_used; [L746] 0 int z = 0; [L747] 0 _Bool weak$$choice0; [L748] 0 _Bool weak$$choice2; [L851] 0 pthread_t t1081; [L852] FCALL, FORK 0 pthread_create(&t1081, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1081, ((void *)0), P0, ((void *)0))=-3, t1081={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L853] 0 pthread_t t1082; [L854] FCALL, FORK 0 pthread_create(&t1082, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1082, ((void *)0), P1, ((void *)0))=-2, t1081={5:0}, t1082={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L855] 0 pthread_t t1083; [L856] FCALL, FORK 0 pthread_create(&t1083, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1083, ((void *)0), P2, ((void *)0))=-1, t1081={5:0}, t1082={6:0}, t1083={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L857] 0 pthread_t t1084; [L858] FCALL, FORK 0 pthread_create(&t1084, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1084, ((void *)0), P3, ((void *)0))=0, t1081={5:0}, t1082={6:0}, t1083={7:0}, t1084={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L787] 3 y$w_buff1 = y$w_buff0 [L788] 3 y$w_buff0 = 2 [L789] 3 y$w_buff1_used = y$w_buff0_used [L790] 3 y$w_buff0_used = (_Bool)1 [L791] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L791] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L792] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L793] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L794] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L795] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L796] 3 y$r_buff1_thd4 = y$r_buff0_thd4 [L797] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L800] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L817] 4 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L820] 4 a = 1 [L823] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L826] 4 __unbuffered_p3_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L752] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L755] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L767] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L829] 4 y = y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L830] 4 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$w_buff0_used [L831] 4 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$w_buff1_used [L832] 4 y$r_buff0_thd4 = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$r_buff0_thd4 [L833] 4 y$r_buff1_thd4 = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$r_buff1_thd4 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L770] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L773] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L774] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L775] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L776] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L777] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L803] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L804] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L805] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L806] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L807] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L810] EXPR 3 __unbuffered_cnt + 1 [L810] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L812] 3 return 0; [L760] EXPR 1 __unbuffered_cnt + 1 [L760] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L762] 1 return 0; [L780] EXPR 2 __unbuffered_cnt + 1 [L780] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L782] 2 return 0; [L836] EXPR 4 __unbuffered_cnt + 1 [L836] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L838] 4 return 0; [L860] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L862] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L862] RET 0 assume_abort_if_not(main$tmp_guard0) [L864] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L865] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L866] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L867] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L868] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, t1081={5:0}, t1082={6:0}, t1083={7:0}, t1084={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L871] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L872] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L873] 0 y$flush_delayed = weak$$choice2 [L874] 0 y$mem_tmp = y [L875] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L876] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L877] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L878] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L879] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L880] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L881] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L882] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L883] 0 y = y$flush_delayed ? y$mem_tmp : y [L884] 0 y$flush_delayed = (_Bool)0 [L886] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] CALL 0 reach_error() [L17] COND FALSE 0 !(0) [L17] 0 __assert_fail ("0", "mix040_tso.oepc.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [\read(__PRETTY_FUNCTION__)={49:50}, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] - UnprovableResult [Line: 760]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 760]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 780]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 780]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 810]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 810]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 858]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 856]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 854]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 852]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 187 locations, 23 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: 90.9s, OverallIterations: 28, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 76.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1081 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1081 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 200 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3275 IncrementalHoareTripleChecker+Invalid, 3475 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 200 mSolverCounterUnsat, 49 mSDtfsCounter, 3275 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4648occurred in iteration=21, InterpolantAutomatonStates: 134, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 480 NumberOfCodeBlocks, 480 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 426 ConstructedInterpolants, 0 QuantifiedInterpolants, 4757 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-27 10:09:44,012 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...