/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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 10:19:05,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 10:19:05,319 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 10:19:05,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 10:19:05,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 10:19:05,346 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 10:19:05,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 10:19:05,347 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 10:19:05,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 10:19:05,350 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 10:19:05,350 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 10:19:05,350 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 10:19:05,350 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 10:19:05,351 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 10:19:05,351 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 10:19:05,352 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 10:19:05,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 10:19:05,352 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 10:19:05,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 10:19:05,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 10:19:05,352 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 10:19:05,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 10:19:05,353 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 10:19:05,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 10:19:05,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 10:19:05,354 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 10:19:05,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 10:19:05,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:19:05,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 10:19:05,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 10:19:05,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 10:19:05,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 10:19:05,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 10:19:05,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 10:19:05,355 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 10:19:05,356 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 10:19:05,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 10:19:05,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 10:19:05,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 10:19:05,602 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 10:19:05,602 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 10:19:05,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 10:19:06,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 10:19:06,706 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 10:19:06,706 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 10:19:06,717 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724e5c549/68d15312f3dc417db2349c83cbd06910/FLAG4db0c832e [2023-08-27 10:19:06,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724e5c549/68d15312f3dc417db2349c83cbd06910 [2023-08-27 10:19:06,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 10:19:06,735 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 10:19:06,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 10:19:06,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 10:19:06,737 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 10:19:06,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:19:06" (1/1) ... [2023-08-27 10:19:06,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2974c5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:06, skipping insertion in model container [2023-08-27 10:19:06,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:19:06" (1/1) ... [2023-08-27 10:19:06,767 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 10:19:07,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:19:07,013 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 10:19:07,032 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:19:07,033 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:19:07,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:19:07,071 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:19:07,072 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:19:07,076 INFO L206 MainTranslator]: Completed translation [2023-08-27 10:19:07,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07 WrapperNode [2023-08-27 10:19:07,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 10:19:07,077 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 10:19:07,077 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 10:19:07,077 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 10:19:07,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07" (1/1) ... [2023-08-27 10:19:07,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07" (1/1) ... [2023-08-27 10:19:07,123 INFO L138 Inliner]: procedures = 177, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 86 [2023-08-27 10:19:07,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 10:19:07,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 10:19:07,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 10:19:07,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 10:19:07,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07" (1/1) ... [2023-08-27 10:19:07,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07" (1/1) ... [2023-08-27 10:19:07,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07" (1/1) ... [2023-08-27 10:19:07,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07" (1/1) ... [2023-08-27 10:19:07,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07" (1/1) ... [2023-08-27 10:19:07,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07" (1/1) ... [2023-08-27 10:19:07,156 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07" (1/1) ... [2023-08-27 10:19:07,157 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07" (1/1) ... [2023-08-27 10:19:07,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 10:19:07,159 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 10:19:07,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 10:19:07,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 10:19:07,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07" (1/1) ... [2023-08-27 10:19:07,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:19:07,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 10:19:07,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 10:19:07,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 10:19:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 10:19:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 10:19:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 10:19:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 10:19:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 10:19:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 10:19:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 10:19:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 10:19:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 10:19:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 10:19:07,213 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 10:19:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-27 10:19:07,213 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-27 10:19:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 10:19:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 10:19:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 10:19:07,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 10:19:07,215 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 10:19:07,338 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 10:19:07,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 10:19:07,504 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 10:19:07,524 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 10:19:07,524 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 10:19:07,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:19:07 BoogieIcfgContainer [2023-08-27 10:19:07,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 10:19:07,527 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 10:19:07,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 10:19:07,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 10:19:07,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:19:06" (1/3) ... [2023-08-27 10:19:07,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e1b867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:19:07, skipping insertion in model container [2023-08-27 10:19:07,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:19:07" (2/3) ... [2023-08-27 10:19:07,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e1b867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:19:07, skipping insertion in model container [2023-08-27 10:19:07,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:19:07" (3/3) ... [2023-08-27 10:19:07,531 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 10:19:07,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 10:19:07,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 10:19:07,542 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 10:19:07,590 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 10:19:07,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 112 transitions, 244 flow [2023-08-27 10:19:07,660 INFO L124 PetriNetUnfolderBase]: 3/108 cut-off events. [2023-08-27 10:19:07,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:19:07,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 3/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-27 10:19:07,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 112 transitions, 244 flow [2023-08-27 10:19:07,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 108 transitions, 228 flow [2023-08-27 10:19:07,670 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:19:07,675 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 108 transitions, 228 flow [2023-08-27 10:19:07,677 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 108 transitions, 228 flow [2023-08-27 10:19:07,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 108 transitions, 228 flow [2023-08-27 10:19:07,711 INFO L124 PetriNetUnfolderBase]: 3/108 cut-off events. [2023-08-27 10:19:07,711 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:19:07,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 3/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-27 10:19:07,714 INFO L119 LiptonReduction]: Number of co-enabled transitions 3358 [2023-08-27 10:19:09,861 INFO L134 LiptonReduction]: Checked pairs total: 9872 [2023-08-27 10:19:09,862 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-27 10:19:09,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 10:19:09,881 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;@41990ccf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:19:09,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 10:19:09,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:19:09,883 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 10:19:09,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:19:09,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:09,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 10:19:09,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:09,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash 389419744, now seen corresponding path program 1 times [2023-08-27 10:19:09,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:09,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602808279] [2023-08-27 10:19:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:09,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:10,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:10,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602808279] [2023-08-27 10:19:10,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602808279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:10,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:10,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:19:10,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479678508] [2023-08-27 10:19:10,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:10,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:19:10,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:19:10,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:19:10,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 210 [2023-08-27 10:19:10,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:10,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 210 [2023-08-27 10:19:10,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:10,387 INFO L124 PetriNetUnfolderBase]: 3159/4369 cut-off events. [2023-08-27 10:19:10,387 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 10:19:10,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8897 conditions, 4369 events. 3159/4369 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 22185 event pairs, 3159 based on Foata normal form. 0/2958 useless extension candidates. Maximal degree in co-relation 8885. Up to 4352 conditions per place. [2023-08-27 10:19:10,409 INFO L140 encePairwiseOnDemand]: 204/210 looper letters, 22 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-08-27 10:19:10,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 25 transitions, 108 flow [2023-08-27 10:19:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:19:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:19:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-08-27 10:19:10,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473015873015873 [2023-08-27 10:19:10,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-08-27 10:19:10,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-08-27 10:19:10,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:10,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-08-27 10:19:10,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,426 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 3 states and 298 transitions. [2023-08-27 10:19:10,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 25 transitions, 108 flow [2023-08-27 10:19:10,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 10:19:10,431 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 60 flow [2023-08-27 10:19:10,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-27 10:19:10,435 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2023-08-27 10:19:10,435 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 60 flow [2023-08-27 10:19:10,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:10,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 10:19:10,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 10:19:10,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:10,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:10,436 INFO L85 PathProgramCache]: Analyzing trace with hash 389419745, now seen corresponding path program 1 times [2023-08-27 10:19:10,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:10,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092866553] [2023-08-27 10:19:10,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:10,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:10,483 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 10:19:10,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:10,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092866553] [2023-08-27 10:19:10,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092866553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:10,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:10,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:19:10,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482653755] [2023-08-27 10:19:10,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:10,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:19:10,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:10,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:19:10,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:19:10,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 210 [2023-08-27 10:19:10,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:10,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 210 [2023-08-27 10:19:10,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:10,676 INFO L124 PetriNetUnfolderBase]: 2048/2936 cut-off events. [2023-08-27 10:19:10,676 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:19:10,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5991 conditions, 2936 events. 2048/2936 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14405 event pairs, 505 based on Foata normal form. 0/2102 useless extension candidates. Maximal degree in co-relation 5985. Up to 2692 conditions per place. [2023-08-27 10:19:10,691 INFO L140 encePairwiseOnDemand]: 201/210 looper letters, 35 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-08-27 10:19:10,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 180 flow [2023-08-27 10:19:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:19:10,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:19:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-27 10:19:10,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984126984126984 [2023-08-27 10:19:10,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-27 10:19:10,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-27 10:19:10,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:10,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-27 10:19:10,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,697 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 60 flow. Second operand 3 states and 314 transitions. [2023-08-27 10:19:10,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 180 flow [2023-08-27 10:19:10,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:19:10,699 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 98 flow [2023-08-27 10:19:10,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2023-08-27 10:19:10,699 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2023-08-27 10:19:10,699 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 98 flow [2023-08-27 10:19:10,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:10,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:10,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 10:19:10,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:10,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1664756855, now seen corresponding path program 1 times [2023-08-27 10:19:10,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:10,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182629212] [2023-08-27 10:19:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:10,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:10,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:10,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182629212] [2023-08-27 10:19:10,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182629212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:10,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:10,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:19:10,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759032862] [2023-08-27 10:19:10,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:10,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:19:10,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:10,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:19:10,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:19:10,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 210 [2023-08-27 10:19:10,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:10,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 210 [2023-08-27 10:19:10,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:10,922 INFO L124 PetriNetUnfolderBase]: 1148/1698 cut-off events. [2023-08-27 10:19:10,923 INFO L125 PetriNetUnfolderBase]: For 154/160 co-relation queries the response was YES. [2023-08-27 10:19:10,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4359 conditions, 1698 events. 1148/1698 cut-off events. For 154/160 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7640 event pairs, 191 based on Foata normal form. 4/1416 useless extension candidates. Maximal degree in co-relation 4351. Up to 942 conditions per place. [2023-08-27 10:19:10,930 INFO L140 encePairwiseOnDemand]: 201/210 looper letters, 46 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2023-08-27 10:19:10,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 282 flow [2023-08-27 10:19:10,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:19:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:19:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 419 transitions. [2023-08-27 10:19:10,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988095238095238 [2023-08-27 10:19:10,932 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 419 transitions. [2023-08-27 10:19:10,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 419 transitions. [2023-08-27 10:19:10,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:10,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 419 transitions. [2023-08-27 10:19:10,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,935 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,935 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 98 flow. Second operand 4 states and 419 transitions. [2023-08-27 10:19:10,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 282 flow [2023-08-27 10:19:10,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:19:10,936 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 151 flow [2023-08-27 10:19:10,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-27 10:19:10,937 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-27 10:19:10,937 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 151 flow [2023-08-27 10:19:10,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:10,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:10,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:10,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 10:19:10,938 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:10,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash -23385468, now seen corresponding path program 1 times [2023-08-27 10:19:10,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:10,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025834876] [2023-08-27 10:19:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:10,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:11,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:11,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025834876] [2023-08-27 10:19:11,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025834876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:11,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:11,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:19:11,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121608510] [2023-08-27 10:19:11,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:11,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:19:11,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:11,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:19:11,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:19:11,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 210 [2023-08-27 10:19:11,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:11,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:11,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 210 [2023-08-27 10:19:11,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:11,297 INFO L124 PetriNetUnfolderBase]: 2256/3293 cut-off events. [2023-08-27 10:19:11,298 INFO L125 PetriNetUnfolderBase]: For 2790/2790 co-relation queries the response was YES. [2023-08-27 10:19:11,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9572 conditions, 3293 events. 2256/3293 cut-off events. For 2790/2790 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15474 event pairs, 638 based on Foata normal form. 0/2882 useless extension candidates. Maximal degree in co-relation 9562. Up to 2725 conditions per place. [2023-08-27 10:19:11,314 INFO L140 encePairwiseOnDemand]: 203/210 looper letters, 57 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2023-08-27 10:19:11,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 63 transitions, 415 flow [2023-08-27 10:19:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:19:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:19:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-08-27 10:19:11,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49047619047619045 [2023-08-27 10:19:11,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-08-27 10:19:11,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-08-27 10:19:11,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:11,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-08-27 10:19:11,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:11,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:11,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:11,318 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 151 flow. Second operand 3 states and 309 transitions. [2023-08-27 10:19:11,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 63 transitions, 415 flow [2023-08-27 10:19:11,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 381 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-27 10:19:11,323 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 179 flow [2023-08-27 10:19:11,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-27 10:19:11,324 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-27 10:19:11,324 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 179 flow [2023-08-27 10:19:11,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:11,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:11,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:11,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 10:19:11,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:11,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:11,325 INFO L85 PathProgramCache]: Analyzing trace with hash -724950834, now seen corresponding path program 1 times [2023-08-27 10:19:11,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:11,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473185077] [2023-08-27 10:19:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:11,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:11,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:11,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473185077] [2023-08-27 10:19:11,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473185077] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:11,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:11,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:19:11,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000199521] [2023-08-27 10:19:11,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:11,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:19:11,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:11,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:19:11,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:19:11,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 210 [2023-08-27 10:19:11,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:11,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:11,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 210 [2023-08-27 10:19:11,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:11,636 INFO L124 PetriNetUnfolderBase]: 1723/2692 cut-off events. [2023-08-27 10:19:11,636 INFO L125 PetriNetUnfolderBase]: For 2259/2259 co-relation queries the response was YES. [2023-08-27 10:19:11,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8293 conditions, 2692 events. 1723/2692 cut-off events. For 2259/2259 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13870 event pairs, 489 based on Foata normal form. 21/2450 useless extension candidates. Maximal degree in co-relation 8281. Up to 1969 conditions per place. [2023-08-27 10:19:11,656 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 50 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-27 10:19:11,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 375 flow [2023-08-27 10:19:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:19:11,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:19:11,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-08-27 10:19:11,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015873015873016 [2023-08-27 10:19:11,657 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-08-27 10:19:11,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-08-27 10:19:11,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:11,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-08-27 10:19:11,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:11,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:11,660 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:11,660 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 179 flow. Second operand 3 states and 316 transitions. [2023-08-27 10:19:11,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 375 flow [2023-08-27 10:19:11,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:19:11,670 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 178 flow [2023-08-27 10:19:11,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-27 10:19:11,672 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-27 10:19:11,672 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 178 flow [2023-08-27 10:19:11,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:11,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:11,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:11,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 10:19:11,672 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:11,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:11,673 INFO L85 PathProgramCache]: Analyzing trace with hash -724950679, now seen corresponding path program 1 times [2023-08-27 10:19:11,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:11,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559170905] [2023-08-27 10:19:11,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:11,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:11,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:11,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559170905] [2023-08-27 10:19:11,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559170905] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:11,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:11,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:19:11,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952311068] [2023-08-27 10:19:11,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:11,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:19:11,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:11,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:19:11,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:19:11,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 210 [2023-08-27 10:19:11,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:11,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:11,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 210 [2023-08-27 10:19:11,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:12,003 INFO L124 PetriNetUnfolderBase]: 2082/3059 cut-off events. [2023-08-27 10:19:12,004 INFO L125 PetriNetUnfolderBase]: For 2276/2276 co-relation queries the response was YES. [2023-08-27 10:19:12,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9741 conditions, 3059 events. 2082/3059 cut-off events. For 2276/2276 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14270 event pairs, 540 based on Foata normal form. 30/2859 useless extension candidates. Maximal degree in co-relation 9728. Up to 2206 conditions per place. [2023-08-27 10:19:12,016 INFO L140 encePairwiseOnDemand]: 203/210 looper letters, 74 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2023-08-27 10:19:12,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 81 transitions, 541 flow [2023-08-27 10:19:12,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:19:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:19:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2023-08-27 10:19:12,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2023-08-27 10:19:12,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2023-08-27 10:19:12,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2023-08-27 10:19:12,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:12,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2023-08-27 10:19:12,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:12,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:12,023 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:12,023 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 178 flow. Second operand 4 states and 405 transitions. [2023-08-27 10:19:12,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 81 transitions, 541 flow [2023-08-27 10:19:12,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 533 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:19:12,026 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 221 flow [2023-08-27 10:19:12,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2023-08-27 10:19:12,027 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-27 10:19:12,029 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 221 flow [2023-08-27 10:19:12,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:12,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:12,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:12,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 10:19:12,031 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:12,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:12,033 INFO L85 PathProgramCache]: Analyzing trace with hash -998640545, now seen corresponding path program 1 times [2023-08-27 10:19:12,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:12,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899579748] [2023-08-27 10:19:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:12,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:12,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:12,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899579748] [2023-08-27 10:19:12,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899579748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:12,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:12,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:19:12,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967079888] [2023-08-27 10:19:12,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:12,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:19:12,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:12,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:19:12,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:19:12,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 210 [2023-08-27 10:19:12,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:12,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:12,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 210 [2023-08-27 10:19:12,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:12,399 INFO L124 PetriNetUnfolderBase]: 2783/4154 cut-off events. [2023-08-27 10:19:12,400 INFO L125 PetriNetUnfolderBase]: For 5918/5918 co-relation queries the response was YES. [2023-08-27 10:19:12,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14504 conditions, 4154 events. 2783/4154 cut-off events. For 5918/5918 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 20920 event pairs, 515 based on Foata normal form. 115/3882 useless extension candidates. Maximal degree in co-relation 14488. Up to 1650 conditions per place. [2023-08-27 10:19:12,440 INFO L140 encePairwiseOnDemand]: 202/210 looper letters, 102 selfloop transitions, 8 changer transitions 0/110 dead transitions. [2023-08-27 10:19:12,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 110 transitions, 824 flow [2023-08-27 10:19:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:19:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:19:12,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2023-08-27 10:19:12,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676190476190476 [2023-08-27 10:19:12,442 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2023-08-27 10:19:12,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2023-08-27 10:19:12,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:12,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2023-08-27 10:19:12,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:12,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:12,444 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:12,445 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 221 flow. Second operand 5 states and 491 transitions. [2023-08-27 10:19:12,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 110 transitions, 824 flow [2023-08-27 10:19:12,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 110 transitions, 819 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:19:12,451 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 313 flow [2023-08-27 10:19:12,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-08-27 10:19:12,452 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-08-27 10:19:12,452 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 313 flow [2023-08-27 10:19:12,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:12,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:12,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:12,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 10:19:12,453 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:12,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1217130472, now seen corresponding path program 1 times [2023-08-27 10:19:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:12,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005936480] [2023-08-27 10:19:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:12,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:12,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:12,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005936480] [2023-08-27 10:19:12,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005936480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:12,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:12,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:19:12,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224686257] [2023-08-27 10:19:12,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:12,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:19:12,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:12,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:19:12,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:19:12,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 210 [2023-08-27 10:19:12,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:12,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:12,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 210 [2023-08-27 10:19:12,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:12,928 INFO L124 PetriNetUnfolderBase]: 4028/6112 cut-off events. [2023-08-27 10:19:12,928 INFO L125 PetriNetUnfolderBase]: For 13934/13934 co-relation queries the response was YES. [2023-08-27 10:19:12,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23609 conditions, 6112 events. 4028/6112 cut-off events. For 13934/13934 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 34892 event pairs, 554 based on Foata normal form. 85/5511 useless extension candidates. Maximal degree in co-relation 23588. Up to 2816 conditions per place. [2023-08-27 10:19:12,953 INFO L140 encePairwiseOnDemand]: 202/210 looper letters, 119 selfloop transitions, 16 changer transitions 0/135 dead transitions. [2023-08-27 10:19:12,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 135 transitions, 1157 flow [2023-08-27 10:19:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:19:12,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:19:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 497 transitions. [2023-08-27 10:19:12,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2023-08-27 10:19:12,955 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 497 transitions. [2023-08-27 10:19:12,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 497 transitions. [2023-08-27 10:19:12,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:12,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 497 transitions. [2023-08-27 10:19:12,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.4) internal successors, (497), 5 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 10:19:12,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:12,958 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:12,958 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 313 flow. Second operand 5 states and 497 transitions. [2023-08-27 10:19:12,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 135 transitions, 1157 flow [2023-08-27 10:19:13,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 135 transitions, 1152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:19:13,003 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 541 flow [2023-08-27 10:19:13,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=541, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2023-08-27 10:19:13,004 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-08-27 10:19:13,004 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 541 flow [2023-08-27 10:19:13,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:13,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:13,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:13,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 10:19:13,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:13,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:13,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1719288175, now seen corresponding path program 1 times [2023-08-27 10:19:13,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:13,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734110103] [2023-08-27 10:19:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:13,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:13,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734110103] [2023-08-27 10:19:13,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734110103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:13,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:13,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:19:13,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063510111] [2023-08-27 10:19:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:13,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:19:13,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:13,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:19:13,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:19:13,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 210 [2023-08-27 10:19:13,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 541 flow. Second operand has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:13,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:13,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 210 [2023-08-27 10:19:13,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:13,379 INFO L124 PetriNetUnfolderBase]: 2601/3985 cut-off events. [2023-08-27 10:19:13,380 INFO L125 PetriNetUnfolderBase]: For 14030/14380 co-relation queries the response was YES. [2023-08-27 10:19:13,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17338 conditions, 3985 events. 2601/3985 cut-off events. For 14030/14380 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 23697 event pairs, 263 based on Foata normal form. 168/3764 useless extension candidates. Maximal degree in co-relation 17312. Up to 1491 conditions per place. [2023-08-27 10:19:13,401 INFO L140 encePairwiseOnDemand]: 201/210 looper letters, 117 selfloop transitions, 13 changer transitions 0/142 dead transitions. [2023-08-27 10:19:13,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 142 transitions, 1585 flow [2023-08-27 10:19:13,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:19:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:19:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2023-08-27 10:19:13,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716 [2023-08-27 10:19:13,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2023-08-27 10:19:13,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2023-08-27 10:19:13,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:13,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2023-08-27 10:19:13,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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 10:19:13,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:13,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:13,406 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 541 flow. Second operand 5 states and 522 transitions. [2023-08-27 10:19:13,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 142 transitions, 1585 flow [2023-08-27 10:19:13,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 142 transitions, 1580 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:19:13,428 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 613 flow [2023-08-27 10:19:13,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=613, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2023-08-27 10:19:13,429 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-27 10:19:13,429 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 613 flow [2023-08-27 10:19:13,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:13,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:13,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:13,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 10:19:13,430 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:13,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:13,430 INFO L85 PathProgramCache]: Analyzing trace with hash 636435268, now seen corresponding path program 1 times [2023-08-27 10:19:13,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:13,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704615611] [2023-08-27 10:19:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:13,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:13,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:13,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704615611] [2023-08-27 10:19:13,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704615611] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:13,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:13,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:19:13,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312973900] [2023-08-27 10:19:13,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:13,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:19:13,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:13,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:19:13,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:19:13,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 210 [2023-08-27 10:19:13,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 613 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 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 10:19:13,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:13,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 210 [2023-08-27 10:19:13,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:13,886 INFO L124 PetriNetUnfolderBase]: 2503/4014 cut-off events. [2023-08-27 10:19:13,887 INFO L125 PetriNetUnfolderBase]: For 22907/23119 co-relation queries the response was YES. [2023-08-27 10:19:13,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19663 conditions, 4014 events. 2503/4014 cut-off events. For 22907/23119 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 25261 event pairs, 510 based on Foata normal form. 409/4053 useless extension candidates. Maximal degree in co-relation 19635. Up to 2835 conditions per place. [2023-08-27 10:19:13,912 INFO L140 encePairwiseOnDemand]: 202/210 looper letters, 96 selfloop transitions, 10 changer transitions 4/122 dead transitions. [2023-08-27 10:19:13,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 122 transitions, 1283 flow [2023-08-27 10:19:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:19:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:19:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 502 transitions. [2023-08-27 10:19:13,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780952380952381 [2023-08-27 10:19:13,914 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 502 transitions. [2023-08-27 10:19:13,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 502 transitions. [2023-08-27 10:19:13,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:13,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 502 transitions. [2023-08-27 10:19:13,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:13,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:13,917 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:13,917 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 613 flow. Second operand 5 states and 502 transitions. [2023-08-27 10:19:13,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 122 transitions, 1283 flow [2023-08-27 10:19:13,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 122 transitions, 1217 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-27 10:19:13,997 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 674 flow [2023-08-27 10:19:13,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=674, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2023-08-27 10:19:13,997 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-08-27 10:19:13,997 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 674 flow [2023-08-27 10:19:13,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 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 10:19:13,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:13,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:13,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 10:19:13,998 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:13,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:13,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1749107221, now seen corresponding path program 1 times [2023-08-27 10:19:13,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:13,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188937320] [2023-08-27 10:19:13,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:13,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:14,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:14,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188937320] [2023-08-27 10:19:14,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188937320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:14,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:14,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:19:14,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421723132] [2023-08-27 10:19:14,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:14,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:19:14,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:14,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:19:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:19:14,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 210 [2023-08-27 10:19:14,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 674 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:14,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:14,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 210 [2023-08-27 10:19:14,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:14,527 INFO L124 PetriNetUnfolderBase]: 3700/6052 cut-off events. [2023-08-27 10:19:14,527 INFO L125 PetriNetUnfolderBase]: For 25145/25193 co-relation queries the response was YES. [2023-08-27 10:19:14,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27868 conditions, 6052 events. 3700/6052 cut-off events. For 25145/25193 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 41020 event pairs, 849 based on Foata normal form. 38/5750 useless extension candidates. Maximal degree in co-relation 27837. Up to 3090 conditions per place. [2023-08-27 10:19:14,561 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 125 selfloop transitions, 6 changer transitions 0/138 dead transitions. [2023-08-27 10:19:14,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 138 transitions, 1498 flow [2023-08-27 10:19:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:19:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:19:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2023-08-27 10:19:14,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2023-08-27 10:19:14,562 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 414 transitions. [2023-08-27 10:19:14,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 414 transitions. [2023-08-27 10:19:14,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:14,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 414 transitions. [2023-08-27 10:19:14,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:14,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:14,564 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:14,564 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 674 flow. Second operand 4 states and 414 transitions. [2023-08-27 10:19:14,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 138 transitions, 1498 flow [2023-08-27 10:19:14,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 138 transitions, 1463 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:19:14,695 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 721 flow [2023-08-27 10:19:14,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=721, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-08-27 10:19:14,695 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-08-27 10:19:14,695 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 721 flow [2023-08-27 10:19:14,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:14,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:14,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:14,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 10:19:14,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:14,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1423782715, now seen corresponding path program 1 times [2023-08-27 10:19:14,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:14,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601673542] [2023-08-27 10:19:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:14,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:14,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:14,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601673542] [2023-08-27 10:19:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601673542] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:14,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:14,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:19:14,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395622675] [2023-08-27 10:19:14,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:14,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:19:14,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:19:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:19:14,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 210 [2023-08-27 10:19:14,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 721 flow. Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:14,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:14,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 210 [2023-08-27 10:19:14,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:15,143 INFO L124 PetriNetUnfolderBase]: 2639/4610 cut-off events. [2023-08-27 10:19:15,144 INFO L125 PetriNetUnfolderBase]: For 30663/31094 co-relation queries the response was YES. [2023-08-27 10:19:15,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21235 conditions, 4610 events. 2639/4610 cut-off events. For 30663/31094 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 33396 event pairs, 320 based on Foata normal form. 545/4692 useless extension candidates. Maximal degree in co-relation 21203. Up to 2062 conditions per place. [2023-08-27 10:19:15,167 INFO L140 encePairwiseOnDemand]: 202/210 looper letters, 109 selfloop transitions, 19 changer transitions 4/147 dead transitions. [2023-08-27 10:19:15,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 147 transitions, 1559 flow [2023-08-27 10:19:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 10:19:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 10:19:15,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 699 transitions. [2023-08-27 10:19:15,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47551020408163264 [2023-08-27 10:19:15,169 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 699 transitions. [2023-08-27 10:19:15,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 699 transitions. [2023-08-27 10:19:15,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:15,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 699 transitions. [2023-08-27 10:19:15,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:15,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:15,173 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:15,173 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 721 flow. Second operand 7 states and 699 transitions. [2023-08-27 10:19:15,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 147 transitions, 1559 flow [2023-08-27 10:19:15,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 147 transitions, 1553 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:19:15,244 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 842 flow [2023-08-27 10:19:15,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=842, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2023-08-27 10:19:15,244 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-08-27 10:19:15,244 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 842 flow [2023-08-27 10:19:15,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:15,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:15,245 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 10:19:15,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 10:19:15,245 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:15,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:15,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1375487350, now seen corresponding path program 1 times [2023-08-27 10:19:15,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:15,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692525788] [2023-08-27 10:19:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:15,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:15,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:15,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692525788] [2023-08-27 10:19:15,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692525788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:15,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:15,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:19:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850437700] [2023-08-27 10:19:15,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:15,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:19:15,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:15,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:19:15,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:19:15,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 210 [2023-08-27 10:19:15,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 842 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:15,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:15,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 210 [2023-08-27 10:19:15,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:15,834 INFO L124 PetriNetUnfolderBase]: 4198/7413 cut-off events. [2023-08-27 10:19:15,835 INFO L125 PetriNetUnfolderBase]: For 41889/41916 co-relation queries the response was YES. [2023-08-27 10:19:15,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37593 conditions, 7413 events. 4198/7413 cut-off events. For 41889/41916 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 56542 event pairs, 932 based on Foata normal form. 23/6894 useless extension candidates. Maximal degree in co-relation 37557. Up to 3384 conditions per place. [2023-08-27 10:19:15,872 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 134 selfloop transitions, 8 changer transitions 0/150 dead transitions. [2023-08-27 10:19:15,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 150 transitions, 1881 flow [2023-08-27 10:19:15,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:19:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:19:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 406 transitions. [2023-08-27 10:19:15,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2023-08-27 10:19:15,873 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 406 transitions. [2023-08-27 10:19:15,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 406 transitions. [2023-08-27 10:19:15,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:15,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 406 transitions. [2023-08-27 10:19:15,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.5) internal successors, (406), 4 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 10:19:15,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:15,875 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:15,875 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 842 flow. Second operand 4 states and 406 transitions. [2023-08-27 10:19:15,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 150 transitions, 1881 flow [2023-08-27 10:19:16,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 150 transitions, 1790 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-27 10:19:16,095 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 877 flow [2023-08-27 10:19:16,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=877, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2023-08-27 10:19:16,095 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2023-08-27 10:19:16,096 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 877 flow [2023-08-27 10:19:16,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:16,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:16,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:16,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 10:19:16,096 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:16,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:16,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1390205669, now seen corresponding path program 1 times [2023-08-27 10:19:16,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:16,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746835559] [2023-08-27 10:19:16,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:16,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:16,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:16,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:16,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746835559] [2023-08-27 10:19:16,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746835559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:16,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:16,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:19:16,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502726149] [2023-08-27 10:19:16,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:16,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:19:16,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:16,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:19:16,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:19:16,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 210 [2023-08-27 10:19:16,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 877 flow. Second operand has 6 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:16,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:16,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 210 [2023-08-27 10:19:16,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:16,727 INFO L124 PetriNetUnfolderBase]: 3082/5688 cut-off events. [2023-08-27 10:19:16,727 INFO L125 PetriNetUnfolderBase]: For 42497/43088 co-relation queries the response was YES. [2023-08-27 10:19:16,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28214 conditions, 5688 events. 3082/5688 cut-off events. For 42497/43088 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 45504 event pairs, 247 based on Foata normal form. 681/5714 useless extension candidates. Maximal degree in co-relation 28177. Up to 1978 conditions per place. [2023-08-27 10:19:16,755 INFO L140 encePairwiseOnDemand]: 202/210 looper letters, 105 selfloop transitions, 28 changer transitions 6/151 dead transitions. [2023-08-27 10:19:16,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 151 transitions, 1656 flow [2023-08-27 10:19:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 10:19:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 10:19:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 894 transitions. [2023-08-27 10:19:16,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473015873015873 [2023-08-27 10:19:16,768 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 894 transitions. [2023-08-27 10:19:16,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 894 transitions. [2023-08-27 10:19:16,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:16,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 894 transitions. [2023-08-27 10:19:16,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.33333333333333) internal successors, (894), 9 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:16,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:16,774 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:16,774 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 877 flow. Second operand 9 states and 894 transitions. [2023-08-27 10:19:16,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 151 transitions, 1656 flow [2023-08-27 10:19:17,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 151 transitions, 1648 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:19:17,005 INFO L231 Difference]: Finished difference. Result has 92 places, 74 transitions, 851 flow [2023-08-27 10:19:17,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=851, PETRI_PLACES=92, PETRI_TRANSITIONS=74} [2023-08-27 10:19:17,005 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2023-08-27 10:19:17,005 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 74 transitions, 851 flow [2023-08-27 10:19:17,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:17,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:17,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:17,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 10:19:17,006 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:17,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1774264506, now seen corresponding path program 1 times [2023-08-27 10:19:17,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:17,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853670123] [2023-08-27 10:19:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:17,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:17,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:17,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853670123] [2023-08-27 10:19:17,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853670123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:17,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:17,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:19:17,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179978028] [2023-08-27 10:19:17,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:17,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:19:17,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:17,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:19:17,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:19:17,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 210 [2023-08-27 10:19:17,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 74 transitions, 851 flow. Second operand has 6 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:17,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:17,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 210 [2023-08-27 10:19:17,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:17,454 INFO L124 PetriNetUnfolderBase]: 2782/5024 cut-off events. [2023-08-27 10:19:17,454 INFO L125 PetriNetUnfolderBase]: For 30341/31061 co-relation queries the response was YES. [2023-08-27 10:19:17,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29186 conditions, 5024 events. 2782/5024 cut-off events. For 30341/31061 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 38989 event pairs, 202 based on Foata normal form. 440/5191 useless extension candidates. Maximal degree in co-relation 29145. Up to 1777 conditions per place. [2023-08-27 10:19:17,471 INFO L140 encePairwiseOnDemand]: 201/210 looper letters, 33 selfloop transitions, 15 changer transitions 58/110 dead transitions. [2023-08-27 10:19:17,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 110 transitions, 1378 flow [2023-08-27 10:19:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:19:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:19:17,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 602 transitions. [2023-08-27 10:19:17,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2023-08-27 10:19:17,472 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 602 transitions. [2023-08-27 10:19:17,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 602 transitions. [2023-08-27 10:19:17,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:17,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 602 transitions. [2023-08-27 10:19:17,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:17,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 210.0) internal successors, (1470), 7 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:17,475 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 210.0) internal successors, (1470), 7 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:17,475 INFO L175 Difference]: Start difference. First operand has 92 places, 74 transitions, 851 flow. Second operand 6 states and 602 transitions. [2023-08-27 10:19:17,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 110 transitions, 1378 flow [2023-08-27 10:19:17,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 110 transitions, 1324 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-27 10:19:17,795 INFO L231 Difference]: Finished difference. Result has 87 places, 34 transitions, 296 flow [2023-08-27 10:19:17,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=87, PETRI_TRANSITIONS=34} [2023-08-27 10:19:17,795 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2023-08-27 10:19:17,795 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 34 transitions, 296 flow [2023-08-27 10:19:17,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:17,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:19:17,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:17,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 10:19:17,796 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:19:17,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:19:17,796 INFO L85 PathProgramCache]: Analyzing trace with hash 981549356, now seen corresponding path program 1 times [2023-08-27 10:19:17,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:19:17,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274289018] [2023-08-27 10:19:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:19:17,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:19:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:19:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:19:17,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:19:17,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274289018] [2023-08-27 10:19:17,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274289018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:19:17,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:19:17,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 10:19:17,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982101633] [2023-08-27 10:19:17,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:19:17,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 10:19:17,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:19:17,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 10:19:17,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 10:19:17,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 210 [2023-08-27 10:19:17,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 34 transitions, 296 flow. Second operand has 7 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:17,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:19:17,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 210 [2023-08-27 10:19:17,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:19:17,941 INFO L124 PetriNetUnfolderBase]: 167/336 cut-off events. [2023-08-27 10:19:17,941 INFO L125 PetriNetUnfolderBase]: For 1817/1898 co-relation queries the response was YES. [2023-08-27 10:19:17,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 336 events. 167/336 cut-off events. For 1817/1898 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1479 event pairs, 11 based on Foata normal form. 23/345 useless extension candidates. Maximal degree in co-relation 1866. Up to 104 conditions per place. [2023-08-27 10:19:17,942 INFO L140 encePairwiseOnDemand]: 203/210 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2023-08-27 10:19:17,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 58 transitions, 574 flow [2023-08-27 10:19:17,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 10:19:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 10:19:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 753 transitions. [2023-08-27 10:19:17,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44821428571428573 [2023-08-27 10:19:17,944 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 753 transitions. [2023-08-27 10:19:17,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 753 transitions. [2023-08-27 10:19:17,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:19:17,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 753 transitions. [2023-08-27 10:19:17,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.125) internal successors, (753), 8 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:17,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 210.0) internal successors, (1890), 9 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:17,948 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 210.0) internal successors, (1890), 9 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:17,948 INFO L175 Difference]: Start difference. First operand has 87 places, 34 transitions, 296 flow. Second operand 8 states and 753 transitions. [2023-08-27 10:19:17,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 58 transitions, 574 flow [2023-08-27 10:19:17,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 378 flow, removed 18 selfloop flow, removed 24 redundant places. [2023-08-27 10:19:17,951 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2023-08-27 10:19:17,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2023-08-27 10:19:17,952 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-08-27 10:19:17,952 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2023-08-27 10:19:17,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:19:17,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2023-08-27 10:19:17,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-27 10:19:17,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-27 10:19:17,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-27 10:19:17,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-27 10:19:17,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-27 10:19:17,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-27 10:19:17,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-27 10:19:17,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (12 of 21 remaining) [2023-08-27 10:19:17,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 21 remaining) [2023-08-27 10:19:17,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 21 remaining) [2023-08-27 10:19:17,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 21 remaining) [2023-08-27 10:19:17,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-08-27 10:19:17,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-27 10:19:17,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-27 10:19:17,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-27 10:19:17,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-27 10:19:17,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-27 10:19:17,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-27 10:19:17,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-27 10:19:17,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-27 10:19:17,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 10:19:17,957 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:19:17,961 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 10:19:17,961 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 10:19:17,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:19:17 BasicIcfg [2023-08-27 10:19:17,964 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 10:19:17,964 INFO L158 Benchmark]: Toolchain (without parser) took 11229.28ms. Allocated memory was 362.8MB in the beginning and 939.5MB in the end (delta: 576.7MB). Free memory was 338.1MB in the beginning and 600.3MB in the end (delta: -262.2MB). Peak memory consumption was 312.8MB. Max. memory is 16.0GB. [2023-08-27 10:19:17,964 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 362.8MB. Free memory was 339.2MB in the beginning and 339.1MB in the end (delta: 88.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:19:17,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.33ms. Allocated memory is still 362.8MB. Free memory was 337.7MB in the beginning and 317.1MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 10:19:17,965 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.43ms. Allocated memory is still 362.8MB. Free memory was 317.1MB in the beginning and 315.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:19:17,965 INFO L158 Benchmark]: Boogie Preprocessor took 34.37ms. Allocated memory is still 362.8MB. Free memory was 315.0MB in the beginning and 313.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:19:17,965 INFO L158 Benchmark]: RCFGBuilder took 366.71ms. Allocated memory is still 362.8MB. Free memory was 313.4MB in the beginning and 296.5MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 10:19:17,965 INFO L158 Benchmark]: TraceAbstraction took 10436.17ms. Allocated memory was 362.8MB in the beginning and 939.5MB in the end (delta: 576.7MB). Free memory was 295.8MB in the beginning and 600.3MB in the end (delta: -304.5MB). Peak memory consumption was 270.8MB. Max. memory is 16.0GB. [2023-08-27 10:19:17,966 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 362.8MB. Free memory was 339.2MB in the beginning and 339.1MB in the end (delta: 88.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 341.33ms. Allocated memory is still 362.8MB. Free memory was 337.7MB in the beginning and 317.1MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.43ms. Allocated memory is still 362.8MB. Free memory was 317.1MB in the beginning and 315.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.37ms. Allocated memory is still 362.8MB. Free memory was 315.0MB in the beginning and 313.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 366.71ms. Allocated memory is still 362.8MB. Free memory was 313.4MB in the beginning and 296.5MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 10436.17ms. Allocated memory was 362.8MB in the beginning and 939.5MB in the end (delta: 576.7MB). Free memory was 295.8MB in the beginning and 600.3MB in the end (delta: -304.5MB). Peak memory consumption was 270.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 118 PlacesBefore, 42 PlacesAfterwards, 108 TransitionsBefore, 30 TransitionsAfterwards, 3358 CoEnabledTransitionPairs, 7 FixpointIterations, 21 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 98 TotalNumberOfCompositions, 9872 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4386, independent: 4145, independent conditional: 0, independent unconditional: 4145, dependent: 241, dependent conditional: 0, dependent unconditional: 241, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1882, independent: 1837, independent conditional: 0, independent unconditional: 1837, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4386, independent: 2308, independent conditional: 0, independent unconditional: 2308, dependent: 196, dependent conditional: 0, dependent unconditional: 196, unknown: 1882, unknown conditional: 0, unknown unconditional: 1882] , Statistics on independence cache: Total cache size (in pairs): 180, Positive cache size: 160, Positive conditional cache size: 0, Positive unconditional cache size: 160, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 736]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 736]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 748]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 748]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 763]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 763]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 775]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 775]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 148 locations, 21 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: 10.3s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 499 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 499 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1218 IncrementalHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 11 mSDtfsCounter, 1218 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=877occurred in iteration=13, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 702 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 10:19:17,983 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...