/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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 10:17:16,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 10:17:16,116 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 10:17:16,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 10:17:16,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 10:17:16,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 10:17:16,170 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 10:17:16,170 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 10:17:16,171 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 10:17:16,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 10:17:16,174 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 10:17:16,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 10:17:16,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 10:17:16,176 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 10:17:16,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 10:17:16,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 10:17:16,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 10:17:16,177 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 10:17:16,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 10:17:16,177 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 10:17:16,177 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 10:17:16,178 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 10:17:16,178 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 10:17:16,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 10:17:16,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 10:17:16,179 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 10:17:16,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 10:17:16,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:17:16,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 10:17:16,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 10:17:16,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 10:17:16,181 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 10:17:16,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 10:17:16,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 10:17:16,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 10:17:16,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 10:17:16,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 10:17:16,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 10:17:16,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 10:17:16,518 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 10:17:16,518 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 10:17:16,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 10:17:17,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 10:17:17,877 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 10:17:17,877 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 10:17:17,897 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b484d5f/4aff1e1d1b224fcc97f7d801e41a7f54/FLAG0e8818ff3 [2023-08-27 10:17:17,908 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b484d5f/4aff1e1d1b224fcc97f7d801e41a7f54 [2023-08-27 10:17:17,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 10:17:17,911 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 10:17:17,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 10:17:17,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 10:17:17,920 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 10:17:17,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:17:17" (1/1) ... [2023-08-27 10:17:17,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3a4038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:17, skipping insertion in model container [2023-08-27 10:17:17,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:17:17" (1/1) ... [2023-08-27 10:17:17,981 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 10:17:18,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:17:18,329 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 10:17:18,356 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:17:18,358 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:17:18,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:17:18,417 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:17:18,417 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:17:18,423 INFO L206 MainTranslator]: Completed translation [2023-08-27 10:17:18,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18 WrapperNode [2023-08-27 10:17:18,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 10:17:18,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 10:17:18,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 10:17:18,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 10:17:18,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18" (1/1) ... [2023-08-27 10:17:18,462 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18" (1/1) ... [2023-08-27 10:17:18,486 INFO L138 Inliner]: procedures = 177, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 85 [2023-08-27 10:17:18,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 10:17:18,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 10:17:18,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 10:17:18,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 10:17:18,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18" (1/1) ... [2023-08-27 10:17:18,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18" (1/1) ... [2023-08-27 10:17:18,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18" (1/1) ... [2023-08-27 10:17:18,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18" (1/1) ... [2023-08-27 10:17:18,519 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18" (1/1) ... [2023-08-27 10:17:18,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18" (1/1) ... [2023-08-27 10:17:18,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18" (1/1) ... [2023-08-27 10:17:18,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18" (1/1) ... [2023-08-27 10:17:18,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 10:17:18,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 10:17:18,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 10:17:18,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 10:17:18,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18" (1/1) ... [2023-08-27 10:17:18,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:17:18,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 10:17:18,568 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 10:17:18,581 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 10:17:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 10:17:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 10:17:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 10:17:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 10:17:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 10:17:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 10:17:18,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 10:17:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 10:17:18,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 10:17:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 10:17:18,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 10:17:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-27 10:17:18,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-27 10:17:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 10:17:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 10:17:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 10:17:18,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 10:17:18,609 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 10:17:18,763 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 10:17:18,764 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 10:17:18,951 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 10:17:18,987 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 10:17:18,987 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 10:17:18,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:17:18 BoogieIcfgContainer [2023-08-27 10:17:18,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 10:17:18,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 10:17:18,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 10:17:18,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 10:17:18,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:17:17" (1/3) ... [2023-08-27 10:17:18,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f40ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:17:18, skipping insertion in model container [2023-08-27 10:17:18,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:17:18" (2/3) ... [2023-08-27 10:17:18,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f40ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:17:18, skipping insertion in model container [2023-08-27 10:17:18,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:17:18" (3/3) ... [2023-08-27 10:17:19,000 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 10:17:19,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 10:17:19,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 10:17:19,014 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 10:17:19,111 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 10:17:19,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 111 transitions, 242 flow [2023-08-27 10:17:19,259 INFO L124 PetriNetUnfolderBase]: 3/107 cut-off events. [2023-08-27 10:17:19,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:17:19,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 3/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-27 10:17:19,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 111 transitions, 242 flow [2023-08-27 10:17:19,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 107 transitions, 226 flow [2023-08-27 10:17:19,272 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:17:19,283 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 107 transitions, 226 flow [2023-08-27 10:17:19,290 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 107 transitions, 226 flow [2023-08-27 10:17:19,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 107 transitions, 226 flow [2023-08-27 10:17:19,328 INFO L124 PetriNetUnfolderBase]: 3/107 cut-off events. [2023-08-27 10:17:19,328 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:17:19,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 3/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-27 10:17:19,332 INFO L119 LiptonReduction]: Number of co-enabled transitions 3358 [2023-08-27 10:17:22,040 INFO L134 LiptonReduction]: Checked pairs total: 9021 [2023-08-27 10:17:22,041 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-27 10:17:22,054 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 10:17:22,060 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;@3aa6e2f0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:17:22,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 10:17:22,063 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:17:22,063 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 10:17:22,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:17:22,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:22,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 10:17:22,064 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 10:17:22,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:22,069 INFO L85 PathProgramCache]: Analyzing trace with hash 386586652, now seen corresponding path program 1 times [2023-08-27 10:17:22,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:22,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898375581] [2023-08-27 10:17:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:22,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:22,275 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 10:17:22,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:22,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898375581] [2023-08-27 10:17:22,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898375581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:22,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:22,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:17:22,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870641136] [2023-08-27 10:17:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:22,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:17:22,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:22,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:17:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:17:22,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-27 10:17:22,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 70 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 10:17:22,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:22,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-27 10:17:22,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:22,921 INFO L124 PetriNetUnfolderBase]: 4076/5793 cut-off events. [2023-08-27 10:17:22,922 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 10:17:22,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11758 conditions, 5793 events. 4076/5793 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 32225 event pairs, 1313 based on Foata normal form. 0/3335 useless extension candidates. Maximal degree in co-relation 11746. Up to 5548 conditions per place. [2023-08-27 10:17:22,971 INFO L140 encePairwiseOnDemand]: 192/205 looper letters, 39 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2023-08-27 10:17:22,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 201 flow [2023-08-27 10:17:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:17:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:17:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-08-27 10:17:22,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186991869918699 [2023-08-27 10:17:22,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-08-27 10:17:22,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-08-27 10:17:22,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:22,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-08-27 10:17:23,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,006 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 70 flow. Second operand 3 states and 319 transitions. [2023-08-27 10:17:23,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 201 flow [2023-08-27 10:17:23,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 194 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 10:17:23,012 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 113 flow [2023-08-27 10:17:23,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-27 10:17:23,017 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-27 10:17:23,018 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 113 flow [2023-08-27 10:17:23,018 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 10:17:23,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:23,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:23,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 10:17:23,019 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:17:23,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:23,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1927338377, now seen corresponding path program 1 times [2023-08-27 10:17:23,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:23,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103182234] [2023-08-27 10:17:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:23,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:23,193 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 10:17:23,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:23,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103182234] [2023-08-27 10:17:23,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103182234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:23,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:23,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:17:23,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876678583] [2023-08-27 10:17:23,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:23,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:23,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:23,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:23,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:23,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-27 10:17:23,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:23,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-27 10:17:23,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:23,508 INFO L124 PetriNetUnfolderBase]: 2048/2937 cut-off events. [2023-08-27 10:17:23,508 INFO L125 PetriNetUnfolderBase]: For 154/160 co-relation queries the response was YES. [2023-08-27 10:17:23,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7593 conditions, 2937 events. 2048/2937 cut-off events. For 154/160 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14434 event pairs, 505 based on Foata normal form. 4/2107 useless extension candidates. Maximal degree in co-relation 7582. Up to 2691 conditions per place. [2023-08-27 10:17:23,553 INFO L140 encePairwiseOnDemand]: 196/205 looper letters, 35 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-08-27 10:17:23,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 209 flow [2023-08-27 10:17:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:17:23,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:17:23,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 400 transitions. [2023-08-27 10:17:23,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2023-08-27 10:17:23,556 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 400 transitions. [2023-08-27 10:17:23,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 400 transitions. [2023-08-27 10:17:23,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:23,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 400 transitions. [2023-08-27 10:17:23,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,561 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,561 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 113 flow. Second operand 4 states and 400 transitions. [2023-08-27 10:17:23,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 209 flow [2023-08-27 10:17:23,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:17:23,563 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 102 flow [2023-08-27 10:17:23,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2023-08-27 10:17:23,563 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-08-27 10:17:23,564 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 102 flow [2023-08-27 10:17:23,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:23,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:23,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 10:17:23,565 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 10:17:23,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:23,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1927338376, now seen corresponding path program 1 times [2023-08-27 10:17:23,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:23,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502635337] [2023-08-27 10:17:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:23,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:23,612 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 10:17:23,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:23,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502635337] [2023-08-27 10:17:23,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502635337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:23,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:23,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:17:23,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169290560] [2023-08-27 10:17:23,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:23,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:23,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:23,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:23,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:23,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-27 10:17:23,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:23,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-27 10:17:23,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:23,816 INFO L124 PetriNetUnfolderBase]: 1148/1699 cut-off events. [2023-08-27 10:17:23,817 INFO L125 PetriNetUnfolderBase]: For 468/474 co-relation queries the response was YES. [2023-08-27 10:17:23,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4360 conditions, 1699 events. 1148/1699 cut-off events. For 468/474 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7632 event pairs, 191 based on Foata normal form. 4/1417 useless extension candidates. Maximal degree in co-relation 4348. Up to 942 conditions per place. [2023-08-27 10:17:23,830 INFO L140 encePairwiseOnDemand]: 196/205 looper letters, 46 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2023-08-27 10:17:23,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 286 flow [2023-08-27 10:17:23,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:17:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:17:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 415 transitions. [2023-08-27 10:17:23,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060975609756098 [2023-08-27 10:17:23,832 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 415 transitions. [2023-08-27 10:17:23,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 415 transitions. [2023-08-27 10:17:23,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:23,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 415 transitions. [2023-08-27 10:17:23,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,836 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,837 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 102 flow. Second operand 4 states and 415 transitions. [2023-08-27 10:17:23,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 286 flow [2023-08-27 10:17:23,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:17:23,840 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 154 flow [2023-08-27 10:17:23,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=96, 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=154, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-27 10:17:23,842 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-27 10:17:23,842 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 154 flow [2023-08-27 10:17:23,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:23,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:23,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:23,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 10:17:23,846 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 10:17:23,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:23,847 INFO L85 PathProgramCache]: Analyzing trace with hash -967343475, now seen corresponding path program 1 times [2023-08-27 10:17:23,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:23,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644952467] [2023-08-27 10:17:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:23,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:24,117 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 10:17:24,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:24,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644952467] [2023-08-27 10:17:24,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644952467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:24,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:24,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:17:24,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489619910] [2023-08-27 10:17:24,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:24,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:17:24,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:24,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:17:24,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:17:24,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 205 [2023-08-27 10:17:24,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:24,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:24,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 205 [2023-08-27 10:17:24,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:24,485 INFO L124 PetriNetUnfolderBase]: 2934/4319 cut-off events. [2023-08-27 10:17:24,486 INFO L125 PetriNetUnfolderBase]: For 3678/3678 co-relation queries the response was YES. [2023-08-27 10:17:24,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13259 conditions, 4319 events. 2934/4319 cut-off events. For 3678/3678 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21595 event pairs, 992 based on Foata normal form. 0/3782 useless extension candidates. Maximal degree in co-relation 13246. Up to 2732 conditions per place. [2023-08-27 10:17:24,514 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 56 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-08-27 10:17:24,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 63 transitions, 422 flow [2023-08-27 10:17:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:17:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:17:24,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2023-08-27 10:17:24,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4926829268292683 [2023-08-27 10:17:24,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2023-08-27 10:17:24,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2023-08-27 10:17:24,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:24,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2023-08-27 10:17:24,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:24,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:24,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:24,519 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 154 flow. Second operand 3 states and 303 transitions. [2023-08-27 10:17:24,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 63 transitions, 422 flow [2023-08-27 10:17:24,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 388 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-27 10:17:24,524 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 190 flow [2023-08-27 10:17:24,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=136, 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=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-08-27 10:17:24,525 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-27 10:17:24,525 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 190 flow [2023-08-27 10:17:24,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:24,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:24,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:24,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 10:17:24,526 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 10:17:24,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:24,526 INFO L85 PathProgramCache]: Analyzing trace with hash 77122078, now seen corresponding path program 1 times [2023-08-27 10:17:24,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:24,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649359471] [2023-08-27 10:17:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:24,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:24,625 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 10:17:24,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649359471] [2023-08-27 10:17:24,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649359471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:24,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:24,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:17:24,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694258099] [2023-08-27 10:17:24,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:24,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:24,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:24,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:24,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 205 [2023-08-27 10:17:24,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:24,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:24,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 205 [2023-08-27 10:17:24,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:25,009 INFO L124 PetriNetUnfolderBase]: 2828/4177 cut-off events. [2023-08-27 10:17:25,009 INFO L125 PetriNetUnfolderBase]: For 3077/3077 co-relation queries the response was YES. [2023-08-27 10:17:25,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14249 conditions, 4177 events. 2828/4177 cut-off events. For 3077/3077 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 20774 event pairs, 376 based on Foata normal form. 36/3854 useless extension candidates. Maximal degree in co-relation 14234. Up to 2194 conditions per place. [2023-08-27 10:17:25,035 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 75 selfloop transitions, 8 changer transitions 0/83 dead transitions. [2023-08-27 10:17:25,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 83 transitions, 577 flow [2023-08-27 10:17:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:17:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:17:25,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2023-08-27 10:17:25,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4841463414634146 [2023-08-27 10:17:25,037 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2023-08-27 10:17:25,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2023-08-27 10:17:25,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:25,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2023-08-27 10:17:25,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:25,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:25,041 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:25,041 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 190 flow. Second operand 4 states and 397 transitions. [2023-08-27 10:17:25,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 83 transitions, 577 flow [2023-08-27 10:17:25,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 83 transitions, 555 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:17:25,055 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 234 flow [2023-08-27 10:17:25,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-08-27 10:17:25,057 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-27 10:17:25,057 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 234 flow [2023-08-27 10:17:25,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:25,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:25,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:25,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 10:17:25,058 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 10:17:25,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:25,058 INFO L85 PathProgramCache]: Analyzing trace with hash 77122233, now seen corresponding path program 1 times [2023-08-27 10:17:25,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:25,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068911383] [2023-08-27 10:17:25,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:25,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:25,190 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 10:17:25,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:25,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068911383] [2023-08-27 10:17:25,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068911383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:25,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:25,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:17:25,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609937706] [2023-08-27 10:17:25,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:25,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:25,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:25,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:25,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 205 [2023-08-27 10:17:25,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:25,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:25,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 205 [2023-08-27 10:17:25,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:25,615 INFO L124 PetriNetUnfolderBase]: 2724/4028 cut-off events. [2023-08-27 10:17:25,615 INFO L125 PetriNetUnfolderBase]: For 4939/4939 co-relation queries the response was YES. [2023-08-27 10:17:25,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14767 conditions, 4028 events. 2724/4028 cut-off events. For 4939/4939 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19904 event pairs, 545 based on Foata normal form. 24/3699 useless extension candidates. Maximal degree in co-relation 14749. Up to 2245 conditions per place. [2023-08-27 10:17:25,644 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 81 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2023-08-27 10:17:25,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 93 transitions, 677 flow [2023-08-27 10:17:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:17:25,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:17:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 401 transitions. [2023-08-27 10:17:25,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48902439024390243 [2023-08-27 10:17:25,647 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 401 transitions. [2023-08-27 10:17:25,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 401 transitions. [2023-08-27 10:17:25,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:25,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 401 transitions. [2023-08-27 10:17:25,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:25,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:25,654 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:25,654 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 234 flow. Second operand 4 states and 401 transitions. [2023-08-27 10:17:25,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 93 transitions, 677 flow [2023-08-27 10:17:25,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 93 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:17:25,661 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 336 flow [2023-08-27 10:17:25,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-27 10:17:25,663 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-27 10:17:25,664 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 336 flow [2023-08-27 10:17:25,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:25,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:25,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:25,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 10:17:25,664 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 10:17:25,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1904183992, now seen corresponding path program 1 times [2023-08-27 10:17:25,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:25,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430422405] [2023-08-27 10:17:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:25,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:25,829 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 10:17:25,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:25,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430422405] [2023-08-27 10:17:25,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430422405] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:25,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:25,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:17:25,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866468736] [2023-08-27 10:17:25,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:25,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:17:25,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:25,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:17:25,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:17:25,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 205 [2023-08-27 10:17:25,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 336 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 10:17:25,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:25,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 205 [2023-08-27 10:17:25,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:26,400 INFO L124 PetriNetUnfolderBase]: 3899/5821 cut-off events. [2023-08-27 10:17:26,401 INFO L125 PetriNetUnfolderBase]: For 12696/12696 co-relation queries the response was YES. [2023-08-27 10:17:26,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23408 conditions, 5821 events. 3899/5821 cut-off events. For 12696/12696 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 30827 event pairs, 713 based on Foata normal form. 109/5334 useless extension candidates. Maximal degree in co-relation 23386. Up to 2727 conditions per place. [2023-08-27 10:17:26,443 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 107 selfloop transitions, 19 changer transitions 0/126 dead transitions. [2023-08-27 10:17:26,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 126 transitions, 1091 flow [2023-08-27 10:17:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:17:26,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:17:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 496 transitions. [2023-08-27 10:17:26,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48390243902439023 [2023-08-27 10:17:26,445 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 496 transitions. [2023-08-27 10:17:26,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 496 transitions. [2023-08-27 10:17:26,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:26,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 496 transitions. [2023-08-27 10:17:26,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:26,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:26,449 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:26,449 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 336 flow. Second operand 5 states and 496 transitions. [2023-08-27 10:17:26,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 126 transitions, 1091 flow [2023-08-27 10:17:26,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 126 transitions, 1084 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:17:26,487 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 598 flow [2023-08-27 10:17:26,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=598, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2023-08-27 10:17:26,489 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-08-27 10:17:26,489 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 598 flow [2023-08-27 10:17:26,489 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 10:17:26,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:26,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:26,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 10:17:26,490 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 10:17:26,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1974202737, now seen corresponding path program 1 times [2023-08-27 10:17:26,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:26,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995215377] [2023-08-27 10:17:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:26,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:26,588 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 10:17:26,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:26,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995215377] [2023-08-27 10:17:26,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995215377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:26,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:26,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:17:26,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710786823] [2023-08-27 10:17:26,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:26,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:26,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:26,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:26,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:26,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 205 [2023-08-27 10:17:26,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 598 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:26,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:26,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 205 [2023-08-27 10:17:26,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:27,262 INFO L124 PetriNetUnfolderBase]: 4647/7079 cut-off events. [2023-08-27 10:17:27,263 INFO L125 PetriNetUnfolderBase]: For 22848/22848 co-relation queries the response was YES. [2023-08-27 10:17:27,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30676 conditions, 7079 events. 4647/7079 cut-off events. For 22848/22848 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 41050 event pairs, 785 based on Foata normal form. 85/6274 useless extension candidates. Maximal degree in co-relation 30649. Up to 3491 conditions per place. [2023-08-27 10:17:27,324 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 83 selfloop transitions, 33 changer transitions 0/116 dead transitions. [2023-08-27 10:17:27,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 116 transitions, 1129 flow [2023-08-27 10:17:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:17:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:17:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2023-08-27 10:17:27,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4926829268292683 [2023-08-27 10:17:27,329 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 404 transitions. [2023-08-27 10:17:27,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 404 transitions. [2023-08-27 10:17:27,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:27,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 404 transitions. [2023-08-27 10:17:27,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:27,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:27,332 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:27,332 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 598 flow. Second operand 4 states and 404 transitions. [2023-08-27 10:17:27,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 116 transitions, 1129 flow [2023-08-27 10:17:27,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 116 transitions, 1129 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 10:17:27,444 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 817 flow [2023-08-27 10:17:27,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=817, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2023-08-27 10:17:27,446 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-27 10:17:27,446 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 817 flow [2023-08-27 10:17:27,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:27,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:27,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:27,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 10:17:27,447 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:17:27,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:27,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1099968780, now seen corresponding path program 1 times [2023-08-27 10:17:27,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:27,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201088068] [2023-08-27 10:17:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:27,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:27,557 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 10:17:27,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:27,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201088068] [2023-08-27 10:17:27,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201088068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:27,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:27,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:17:27,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520250230] [2023-08-27 10:17:27,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:27,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:27,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:27,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-27 10:17:27,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 817 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:27,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:27,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-27 10:17:27,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:28,696 INFO L124 PetriNetUnfolderBase]: 6487/10187 cut-off events. [2023-08-27 10:17:28,696 INFO L125 PetriNetUnfolderBase]: For 54080/54500 co-relation queries the response was YES. [2023-08-27 10:17:28,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47393 conditions, 10187 events. 6487/10187 cut-off events. For 54080/54500 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 68146 event pairs, 1357 based on Foata normal form. 383/8994 useless extension candidates. Maximal degree in co-relation 47361. Up to 4595 conditions per place. [2023-08-27 10:17:28,815 INFO L140 encePairwiseOnDemand]: 201/205 looper letters, 152 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2023-08-27 10:17:28,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 165 transitions, 2216 flow [2023-08-27 10:17:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:17:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:17:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 413 transitions. [2023-08-27 10:17:28,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036585365853659 [2023-08-27 10:17:28,818 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 413 transitions. [2023-08-27 10:17:28,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 413 transitions. [2023-08-27 10:17:28,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:28,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 413 transitions. [2023-08-27 10:17:28,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:28,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:28,821 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:28,821 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 817 flow. Second operand 4 states and 413 transitions. [2023-08-27 10:17:28,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 165 transitions, 2216 flow [2023-08-27 10:17:28,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 165 transitions, 2204 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-27 10:17:28,994 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 900 flow [2023-08-27 10:17:28,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=900, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2023-08-27 10:17:28,995 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-08-27 10:17:28,995 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 900 flow [2023-08-27 10:17:28,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:28,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:28,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:28,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 10:17:28,996 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:17:28,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:28,996 INFO L85 PathProgramCache]: Analyzing trace with hash 68489086, now seen corresponding path program 1 times [2023-08-27 10:17:28,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:28,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802913246] [2023-08-27 10:17:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:29,055 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 10:17:29,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:29,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802913246] [2023-08-27 10:17:29,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802913246] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:29,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:29,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:17:29,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260470629] [2023-08-27 10:17:29,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:29,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:17:29,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:29,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:17:29,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:17:29,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-27 10:17:29,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 900 flow. Second operand has 5 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:29,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:29,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-27 10:17:29,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:29,797 INFO L124 PetriNetUnfolderBase]: 4065/6326 cut-off events. [2023-08-27 10:17:29,797 INFO L125 PetriNetUnfolderBase]: For 38721/40073 co-relation queries the response was YES. [2023-08-27 10:17:29,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30869 conditions, 6326 events. 4065/6326 cut-off events. For 38721/40073 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 41469 event pairs, 258 based on Foata normal form. 529/6368 useless extension candidates. Maximal degree in co-relation 30833. Up to 2598 conditions per place. [2023-08-27 10:17:29,857 INFO L140 encePairwiseOnDemand]: 196/205 looper letters, 149 selfloop transitions, 13 changer transitions 0/176 dead transitions. [2023-08-27 10:17:29,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 176 transitions, 2567 flow [2023-08-27 10:17:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:17:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:17:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 517 transitions. [2023-08-27 10:17:29,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.504390243902439 [2023-08-27 10:17:29,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 517 transitions. [2023-08-27 10:17:29,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 517 transitions. [2023-08-27 10:17:29,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:29,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 517 transitions. [2023-08-27 10:17:29,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:29,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:29,863 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:29,863 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 900 flow. Second operand 5 states and 517 transitions. [2023-08-27 10:17:29,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 176 transitions, 2567 flow [2023-08-27 10:17:29,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 176 transitions, 2546 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:17:29,988 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 967 flow [2023-08-27 10:17:29,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=967, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2023-08-27 10:17:29,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-08-27 10:17:29,989 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 967 flow [2023-08-27 10:17:29,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:29,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:29,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:29,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 10:17:29,990 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 10:17:29,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:29,991 INFO L85 PathProgramCache]: Analyzing trace with hash -103569547, now seen corresponding path program 1 times [2023-08-27 10:17:29,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:29,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276052659] [2023-08-27 10:17:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:29,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:30,112 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 10:17:30,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:30,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276052659] [2023-08-27 10:17:30,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276052659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:30,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:30,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:17:30,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443026916] [2023-08-27 10:17:30,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:30,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:30,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:30,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:30,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:30,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-08-27 10:17:30,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 967 flow. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:30,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:30,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-08-27 10:17:30,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:30,961 INFO L124 PetriNetUnfolderBase]: 4150/6702 cut-off events. [2023-08-27 10:17:30,961 INFO L125 PetriNetUnfolderBase]: For 59605/61794 co-relation queries the response was YES. [2023-08-27 10:17:30,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36310 conditions, 6702 events. 4150/6702 cut-off events. For 59605/61794 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 46553 event pairs, 756 based on Foata normal form. 1576/7761 useless extension candidates. Maximal degree in co-relation 36273. Up to 4890 conditions per place. [2023-08-27 10:17:31,020 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 118 selfloop transitions, 10 changer transitions 4/146 dead transitions. [2023-08-27 10:17:31,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 146 transitions, 1907 flow [2023-08-27 10:17:31,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:17:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:17:31,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 497 transitions. [2023-08-27 10:17:31,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4848780487804878 [2023-08-27 10:17:31,024 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 497 transitions. [2023-08-27 10:17:31,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 497 transitions. [2023-08-27 10:17:31,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:31,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 497 transitions. [2023-08-27 10:17:31,025 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 10:17:31,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:31,027 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:31,027 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 967 flow. Second operand 5 states and 497 transitions. [2023-08-27 10:17:31,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 146 transitions, 1907 flow [2023-08-27 10:17:31,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 146 transitions, 1841 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-27 10:17:31,250 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 1040 flow [2023-08-27 10:17:31,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1040, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2023-08-27 10:17:31,251 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2023-08-27 10:17:31,251 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 1040 flow [2023-08-27 10:17:31,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:31,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:31,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:31,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 10:17:31,252 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 10:17:31,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash -595278657, now seen corresponding path program 1 times [2023-08-27 10:17:31,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:31,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058990533] [2023-08-27 10:17:31,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:31,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:31,379 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 10:17:31,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:31,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058990533] [2023-08-27 10:17:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058990533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:31,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:31,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:17:31,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182471644] [2023-08-27 10:17:31,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:31,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:17:31,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:31,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:17:31,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:17:31,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-27 10:17:31,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 1040 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:31,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:31,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-27 10:17:31,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:32,248 INFO L124 PetriNetUnfolderBase]: 6275/10305 cut-off events. [2023-08-27 10:17:32,248 INFO L125 PetriNetUnfolderBase]: For 68882/69679 co-relation queries the response was YES. [2023-08-27 10:17:32,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52733 conditions, 10305 events. 6275/10305 cut-off events. For 68882/69679 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 75933 event pairs, 1125 based on Foata normal form. 503/10375 useless extension candidates. Maximal degree in co-relation 52693. Up to 4803 conditions per place. [2023-08-27 10:17:32,339 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 162 selfloop transitions, 8 changer transitions 0/177 dead transitions. [2023-08-27 10:17:32,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 177 transitions, 2476 flow [2023-08-27 10:17:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:17:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:17:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 410 transitions. [2023-08-27 10:17:32,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-27 10:17:32,341 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 410 transitions. [2023-08-27 10:17:32,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 410 transitions. [2023-08-27 10:17:32,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:32,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 410 transitions. [2023-08-27 10:17:32,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:32,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:32,344 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:32,344 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 1040 flow. Second operand 4 states and 410 transitions. [2023-08-27 10:17:32,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 177 transitions, 2476 flow [2023-08-27 10:17:32,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 177 transitions, 2441 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:17:32,859 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 1183 flow [2023-08-27 10:17:32,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1183, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2023-08-27 10:17:32,860 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2023-08-27 10:17:32,860 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 1183 flow [2023-08-27 10:17:32,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:32,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:32,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:32,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 10:17:32,861 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 10:17:32,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:32,861 INFO L85 PathProgramCache]: Analyzing trace with hash 932214791, now seen corresponding path program 1 times [2023-08-27 10:17:32,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:32,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772000627] [2023-08-27 10:17:32,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:32,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:32,958 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 10:17:32,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:32,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772000627] [2023-08-27 10:17:32,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772000627] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:32,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:32,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:17:32,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618690096] [2023-08-27 10:17:32,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:32,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:17:32,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:32,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:17:32,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:17:32,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-08-27 10:17:32,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 1183 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:32,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:32,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-08-27 10:17:32,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:33,729 INFO L124 PetriNetUnfolderBase]: 4744/8316 cut-off events. [2023-08-27 10:17:33,729 INFO L125 PetriNetUnfolderBase]: For 82617/85140 co-relation queries the response was YES. [2023-08-27 10:17:33,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40888 conditions, 8316 events. 4744/8316 cut-off events. For 82617/85140 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 67026 event pairs, 508 based on Foata normal form. 2133/9695 useless extension candidates. Maximal degree in co-relation 40847. Up to 3943 conditions per place. [2023-08-27 10:17:33,820 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 130 selfloop transitions, 19 changer transitions 4/172 dead transitions. [2023-08-27 10:17:33,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 172 transitions, 2259 flow [2023-08-27 10:17:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 10:17:33,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 10:17:33,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 692 transitions. [2023-08-27 10:17:33,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48222996515679445 [2023-08-27 10:17:33,823 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 692 transitions. [2023-08-27 10:17:33,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 692 transitions. [2023-08-27 10:17:33,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:33,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 692 transitions. [2023-08-27 10:17:33,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:33,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:33,828 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:33,829 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 1183 flow. Second operand 7 states and 692 transitions. [2023-08-27 10:17:33,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 172 transitions, 2259 flow [2023-08-27 10:17:34,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 172 transitions, 2249 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 10:17:34,072 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 1235 flow [2023-08-27 10:17:34,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1235, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2023-08-27 10:17:34,073 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2023-08-27 10:17:34,073 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 1235 flow [2023-08-27 10:17:34,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:34,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:34,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:17:34,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 10:17:34,073 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 10:17:34,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:34,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2079174680, now seen corresponding path program 1 times [2023-08-27 10:17:34,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:34,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763404665] [2023-08-27 10:17:34,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:34,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:34,185 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 10:17:34,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:34,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763404665] [2023-08-27 10:17:34,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763404665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:34,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:34,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:17:34,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453928978] [2023-08-27 10:17:34,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:34,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:17:34,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:34,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:17:34,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:17:34,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-08-27 10:17:34,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 1235 flow. Second operand has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:34,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:34,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-08-27 10:17:34,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:35,012 INFO L124 PetriNetUnfolderBase]: 4106/7436 cut-off events. [2023-08-27 10:17:35,012 INFO L125 PetriNetUnfolderBase]: For 74677/77009 co-relation queries the response was YES. [2023-08-27 10:17:35,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40183 conditions, 7436 events. 4106/7436 cut-off events. For 74677/77009 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 61542 event pairs, 279 based on Foata normal form. 1526/8190 useless extension candidates. Maximal degree in co-relation 40138. Up to 2600 conditions per place. [2023-08-27 10:17:35,061 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 127 selfloop transitions, 28 changer transitions 6/175 dead transitions. [2023-08-27 10:17:35,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 175 transitions, 2295 flow [2023-08-27 10:17:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 10:17:35,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 10:17:35,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 885 transitions. [2023-08-27 10:17:35,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-08-27 10:17:35,065 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 885 transitions. [2023-08-27 10:17:35,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 885 transitions. [2023-08-27 10:17:35,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:35,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 885 transitions. [2023-08-27 10:17:35,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.33333333333333) internal successors, (885), 9 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:35,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:35,070 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:35,070 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 1235 flow. Second operand 9 states and 885 transitions. [2023-08-27 10:17:35,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 175 transitions, 2295 flow [2023-08-27 10:17:35,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 175 transitions, 2261 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 10:17:35,501 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 1114 flow [2023-08-27 10:17:35,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1114, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2023-08-27 10:17:35,502 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2023-08-27 10:17:35,502 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 1114 flow [2023-08-27 10:17:35,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:35,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:35,502 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 10:17:35,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 10:17:35,502 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:17:35,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:35,503 INFO L85 PathProgramCache]: Analyzing trace with hash -223956444, now seen corresponding path program 1 times [2023-08-27 10:17:35,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:35,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309603786] [2023-08-27 10:17:35,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:35,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:35,560 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 10:17:35,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:35,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309603786] [2023-08-27 10:17:35,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309603786] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:35,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:35,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:17:35,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285661420] [2023-08-27 10:17:35,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:35,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:17:35,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:35,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:17:35,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:17:35,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-27 10:17:35,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 1114 flow. Second operand has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:35,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:35,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-27 10:17:35,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:36,303 INFO L124 PetriNetUnfolderBase]: 3666/6521 cut-off events. [2023-08-27 10:17:36,303 INFO L125 PetriNetUnfolderBase]: For 49284/51042 co-relation queries the response was YES. [2023-08-27 10:17:36,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39984 conditions, 6521 events. 3666/6521 cut-off events. For 49284/51042 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 52599 event pairs, 206 based on Foata normal form. 858/7109 useless extension candidates. Maximal degree in co-relation 39936. Up to 2362 conditions per place. [2023-08-27 10:17:36,335 INFO L140 encePairwiseOnDemand]: 196/205 looper letters, 38 selfloop transitions, 15 changer transitions 68/125 dead transitions. [2023-08-27 10:17:36,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 125 transitions, 1811 flow [2023-08-27 10:17:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:17:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:17:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 596 transitions. [2023-08-27 10:17:36,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845528455284553 [2023-08-27 10:17:36,338 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 596 transitions. [2023-08-27 10:17:36,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 596 transitions. [2023-08-27 10:17:36,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:36,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 596 transitions. [2023-08-27 10:17:36,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.33333333333333) internal successors, (596), 6 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:36,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:36,342 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:36,342 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 1114 flow. Second operand 6 states and 596 transitions. [2023-08-27 10:17:36,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 125 transitions, 1811 flow [2023-08-27 10:17:37,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 125 transitions, 1757 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-27 10:17:37,031 INFO L231 Difference]: Finished difference. Result has 90 places, 36 transitions, 367 flow [2023-08-27 10:17:37,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=367, PETRI_PLACES=90, PETRI_TRANSITIONS=36} [2023-08-27 10:17:37,031 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-08-27 10:17:37,031 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 36 transitions, 367 flow [2023-08-27 10:17:37,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:37,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:17:37,032 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 10:17:37,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 10:17:37,032 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 10:17:37,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:17:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1052741721, now seen corresponding path program 1 times [2023-08-27 10:17:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:17:37,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950880558] [2023-08-27 10:17:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:17:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:17:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:17:37,151 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 10:17:37,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:17:37,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950880558] [2023-08-27 10:17:37,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950880558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:17:37,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:17:37,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 10:17:37,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518423472] [2023-08-27 10:17:37,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:17:37,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 10:17:37,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:17:37,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 10:17:37,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 10:17:37,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-08-27 10:17:37,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 36 transitions, 367 flow. Second operand has 7 states, 7 states have (on average 89.42857142857143) internal successors, (626), 7 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:37,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:17:37,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-08-27 10:17:37,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:17:37,260 INFO L124 PetriNetUnfolderBase]: 208/398 cut-off events. [2023-08-27 10:17:37,260 INFO L125 PetriNetUnfolderBase]: For 2450/2575 co-relation queries the response was YES. [2023-08-27 10:17:37,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 398 events. 208/398 cut-off events. For 2450/2575 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1794 event pairs, 13 based on Foata normal form. 34/413 useless extension candidates. Maximal degree in co-relation 2329. Up to 130 conditions per place. [2023-08-27 10:17:37,262 INFO L140 encePairwiseOnDemand]: 198/205 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2023-08-27 10:17:37,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 66 transitions, 730 flow [2023-08-27 10:17:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 10:17:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 10:17:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 749 transitions. [2023-08-27 10:17:37,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45670731707317075 [2023-08-27 10:17:37,265 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 749 transitions. [2023-08-27 10:17:37,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 749 transitions. [2023-08-27 10:17:37,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:17:37,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 749 transitions. [2023-08-27 10:17:37,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.625) internal successors, (749), 8 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:37,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:37,269 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:37,270 INFO L175 Difference]: Start difference. First operand has 90 places, 36 transitions, 367 flow. Second operand 8 states and 749 transitions. [2023-08-27 10:17:37,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 66 transitions, 730 flow [2023-08-27 10:17:37,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 454 flow, removed 22 selfloop flow, removed 27 redundant places. [2023-08-27 10:17:37,276 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2023-08-27 10:17:37,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2023-08-27 10:17:37,276 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-08-27 10:17:37,276 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2023-08-27 10:17:37,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.42857142857143) internal successors, (626), 7 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:17:37,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2023-08-27 10:17:37,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-27 10:17:37,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-27 10:17:37,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-27 10:17:37,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-27 10:17:37,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-27 10:17:37,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-27 10:17:37,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-27 10:17:37,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (12 of 21 remaining) [2023-08-27 10:17:37,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 21 remaining) [2023-08-27 10:17:37,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 21 remaining) [2023-08-27 10:17:37,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 21 remaining) [2023-08-27 10:17:37,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-08-27 10:17:37,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-27 10:17:37,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-27 10:17:37,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-27 10:17:37,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-27 10:17:37,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-27 10:17:37,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-27 10:17:37,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-27 10:17:37,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-27 10:17:37,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 10:17:37,285 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 10:17:37,290 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 10:17:37,290 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 10:17:37,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:17:37 BasicIcfg [2023-08-27 10:17:37,293 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 10:17:37,293 INFO L158 Benchmark]: Toolchain (without parser) took 19382.23ms. Allocated memory was 358.6MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 334.0MB in the beginning and 896.8MB in the end (delta: -562.9MB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2023-08-27 10:17:37,293 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 358.6MB. Free memory is still 335.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:17:37,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.88ms. Allocated memory is still 358.6MB. Free memory was 334.0MB in the beginning and 313.6MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 10:17:37,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.09ms. Allocated memory is still 358.6MB. Free memory was 313.6MB in the beginning and 311.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:17:37,294 INFO L158 Benchmark]: Boogie Preprocessor took 36.29ms. Allocated memory is still 358.6MB. Free memory was 311.4MB in the beginning and 309.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:17:37,294 INFO L158 Benchmark]: RCFGBuilder took 468.10ms. Allocated memory is still 358.6MB. Free memory was 309.8MB in the beginning and 292.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 10:17:37,294 INFO L158 Benchmark]: TraceAbstraction took 18297.44ms. Allocated memory was 358.6MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 291.5MB in the beginning and 896.8MB in the end (delta: -605.3MB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2023-08-27 10:17:37,296 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 358.6MB. Free memory is still 335.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 506.88ms. Allocated memory is still 358.6MB. Free memory was 334.0MB in the beginning and 313.6MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 62.09ms. Allocated memory is still 358.6MB. Free memory was 313.6MB in the beginning and 311.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.29ms. Allocated memory is still 358.6MB. Free memory was 311.4MB in the beginning and 309.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 468.10ms. Allocated memory is still 358.6MB. Free memory was 309.8MB in the beginning and 292.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 18297.44ms. Allocated memory was 358.6MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 291.5MB in the beginning and 896.8MB in the end (delta: -605.3MB). Peak memory consumption was 1.2GB. 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: 2.8s, 117 PlacesBefore, 42 PlacesAfterwards, 107 TransitionsBefore, 29 TransitionsAfterwards, 3358 CoEnabledTransitionPairs, 7 FixpointIterations, 20 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 94 TotalNumberOfCompositions, 9021 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3945, independent: 3714, independent conditional: 0, independent unconditional: 3714, dependent: 231, dependent conditional: 0, dependent unconditional: 231, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1774, independent: 1737, independent conditional: 0, independent unconditional: 1737, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3945, independent: 1977, independent conditional: 0, independent unconditional: 1977, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 1774, unknown conditional: 0, unknown unconditional: 1774] , Statistics on independence cache: Total cache size (in pairs): 147, Positive cache size: 129, Positive conditional cache size: 0, Positive unconditional cache size: 129, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 734]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 734]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 746]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 746]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 773]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 773]: 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, 147 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: 18.1s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 517 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 517 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1307 IncrementalHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 21 mSDtfsCounter, 1307 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1235occurred in iteration=13, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 718 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 10:17:37,319 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...