/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 -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-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 20:51:12,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 20:51:12,205 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 [2023-08-26 20:51:12,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 20:51:12,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 20:51:12,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 20:51:12,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 20:51:12,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 20:51:12,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 20:51:12,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 20:51:12,233 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 20:51:12,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 20:51:12,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 20:51:12,234 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 20:51:12,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 20:51:12,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 20:51:12,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 20:51:12,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 20:51:12,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 20:51:12,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 20:51:12,236 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 20:51:12,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 20:51:12,239 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 20:51:12,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 20:51:12,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 20:51:12,242 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 20:51:12,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 20:51:12,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:51:12,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 20:51:12,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 20:51:12,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 20:51:12,244 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 20:51:12,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 20:51:12,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 20:51:12,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 20:51:12,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 20:51:12,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 20:51:12,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 20:51:12,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 20:51:12,557 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 20:51:12,558 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 20:51:12,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-08-26 20:51:13,569 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 20:51:13,795 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 20:51:13,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-08-26 20:51:13,805 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfe943fa9/c6c5b1727cfe4739a05a4a25b16f0c1d/FLAGf0035132f [2023-08-26 20:51:13,817 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfe943fa9/c6c5b1727cfe4739a05a4a25b16f0c1d [2023-08-26 20:51:13,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 20:51:13,820 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 20:51:13,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 20:51:13,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 20:51:13,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 20:51:13,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:51:13" (1/1) ... [2023-08-26 20:51:13,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8708be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:13, skipping insertion in model container [2023-08-26 20:51:13,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:51:13" (1/1) ... [2023-08-26 20:51:13,861 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 20:51:13,998 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-26 20:51:14,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:51:14,125 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 20:51:14,139 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-26 20:51:14,147 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-26 20:51:14,148 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-26 20:51:14,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:51:14,184 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 20:51:14,184 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 20:51:14,185 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 20:51:14,189 INFO L206 MainTranslator]: Completed translation [2023-08-26 20:51:14,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14 WrapperNode [2023-08-26 20:51:14,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 20:51:14,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 20:51:14,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 20:51:14,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 20:51:14,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14" (1/1) ... [2023-08-26 20:51:14,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14" (1/1) ... [2023-08-26 20:51:14,240 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 121 [2023-08-26 20:51:14,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 20:51:14,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 20:51:14,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 20:51:14,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 20:51:14,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14" (1/1) ... [2023-08-26 20:51:14,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14" (1/1) ... [2023-08-26 20:51:14,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14" (1/1) ... [2023-08-26 20:51:14,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14" (1/1) ... [2023-08-26 20:51:14,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14" (1/1) ... [2023-08-26 20:51:14,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14" (1/1) ... [2023-08-26 20:51:14,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14" (1/1) ... [2023-08-26 20:51:14,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14" (1/1) ... [2023-08-26 20:51:14,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 20:51:14,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 20:51:14,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 20:51:14,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 20:51:14,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14" (1/1) ... [2023-08-26 20:51:14,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:51:14,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:51:14,330 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) [2023-08-26 20:51:14,340 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 [2023-08-26 20:51:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 20:51:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 20:51:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 20:51:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 20:51:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-08-26 20:51:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-08-26 20:51:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 20:51:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 20:51:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 20:51:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 20:51:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 20:51:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 20:51:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-08-26 20:51:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-08-26 20:51:14,361 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 20:51:14,470 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 20:51:14,472 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 20:51:14,620 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 20:51:14,667 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 20:51:14,667 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 20:51:14,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:51:14 BoogieIcfgContainer [2023-08-26 20:51:14,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 20:51:14,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 20:51:14,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 20:51:14,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 20:51:14,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:51:13" (1/3) ... [2023-08-26 20:51:14,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c99fc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:51:14, skipping insertion in model container [2023-08-26 20:51:14,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:51:14" (2/3) ... [2023-08-26 20:51:14,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c99fc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:51:14, skipping insertion in model container [2023-08-26 20:51:14,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:51:14" (3/3) ... [2023-08-26 20:51:14,674 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2023-08-26 20:51:14,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 20:51:14,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 20:51:14,686 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 20:51:14,766 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 20:51:14,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 126 transitions, 284 flow [2023-08-26 20:51:14,833 INFO L124 PetriNetUnfolderBase]: 4/122 cut-off events. [2023-08-26 20:51:14,833 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 20:51:14,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 122 events. 4/122 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 173 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-08-26 20:51:14,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 126 transitions, 284 flow [2023-08-26 20:51:14,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 109 transitions, 239 flow [2023-08-26 20:51:14,843 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 20:51:14,848 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 109 transitions, 239 flow [2023-08-26 20:51:14,850 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 109 transitions, 239 flow [2023-08-26 20:51:14,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 109 transitions, 239 flow [2023-08-26 20:51:14,874 INFO L124 PetriNetUnfolderBase]: 4/109 cut-off events. [2023-08-26 20:51:14,874 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 20:51:14,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 109 events. 4/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 172 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-08-26 20:51:14,877 INFO L119 LiptonReduction]: Number of co-enabled transitions 4046 [2023-08-26 20:51:17,317 INFO L134 LiptonReduction]: Checked pairs total: 11351 [2023-08-26 20:51:17,317 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-26 20:51:17,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 20:51:17,336 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;@4ad55db3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 20:51:17,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-26 20:51:17,340 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 20:51:17,340 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-26 20:51:17,341 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 20:51:17,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:51:17,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 20:51:17,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:51:17,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:51:17,347 INFO L85 PathProgramCache]: Analyzing trace with hash 417102581, now seen corresponding path program 1 times [2023-08-26 20:51:17,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:51:17,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712823531] [2023-08-26 20:51:17,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:51:17,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:51:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:51:17,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:51:17,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:51:17,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712823531] [2023-08-26 20:51:17,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712823531] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:51:17,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:51:17,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 20:51:17,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085378552] [2023-08-26 20:51:17,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:51:17,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:51:17,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:51:17,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:51:17,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:51:17,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 212 [2023-08-26 20:51:17,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:17,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:51:17,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 212 [2023-08-26 20:51:17,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:51:18,534 INFO L124 PetriNetUnfolderBase]: 7768/12161 cut-off events. [2023-08-26 20:51:18,535 INFO L125 PetriNetUnfolderBase]: For 1195/1195 co-relation queries the response was YES. [2023-08-26 20:51:18,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24513 conditions, 12161 events. 7768/12161 cut-off events. For 1195/1195 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 88696 event pairs, 3428 based on Foata normal form. 886/10355 useless extension candidates. Maximal degree in co-relation 18038. Up to 6383 conditions per place. [2023-08-26 20:51:18,605 INFO L140 encePairwiseOnDemand]: 195/212 looper letters, 51 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2023-08-26 20:51:18,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 284 flow [2023-08-26 20:51:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:51:18,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:51:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-26 20:51:18,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5770440251572327 [2023-08-26 20:51:18,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-26 20:51:18,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-26 20:51:18,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:51:18,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-26 20:51:18,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:18,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:18,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:18,626 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 111 flow. Second operand 3 states and 367 transitions. [2023-08-26 20:51:18,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 284 flow [2023-08-26 20:51:18,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-26 20:51:18,644 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 162 flow [2023-08-26 20:51:18,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-08-26 20:51:18,648 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-08-26 20:51:18,648 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 162 flow [2023-08-26 20:51:18,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:18,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:51:18,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:51:18,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 20:51:18,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr2ASSERT_VIOLATIONASSERT === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:51:18,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:51:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash 268651621, now seen corresponding path program 1 times [2023-08-26 20:51:18,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:51:18,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278381837] [2023-08-26 20:51:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:51:18,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:51:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:51:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:51:18,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:51:18,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278381837] [2023-08-26 20:51:18,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278381837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:51:18,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:51:18,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 20:51:18,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359665962] [2023-08-26 20:51:18,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:51:18,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 20:51:18,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:51:18,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 20:51:18,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 20:51:18,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 212 [2023-08-26 20:51:18,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:18,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:51:18,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 212 [2023-08-26 20:51:18,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:51:22,528 INFO L124 PetriNetUnfolderBase]: 54660/77323 cut-off events. [2023-08-26 20:51:22,529 INFO L125 PetriNetUnfolderBase]: For 23854/23854 co-relation queries the response was YES. [2023-08-26 20:51:22,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187459 conditions, 77323 events. 54660/77323 cut-off events. For 23854/23854 co-relation queries the response was YES. Maximal size of possible extension queue 2411. Compared 525725 event pairs, 7654 based on Foata normal form. 0/66107 useless extension candidates. Maximal degree in co-relation 57569. Up to 37549 conditions per place. [2023-08-26 20:51:22,897 INFO L140 encePairwiseOnDemand]: 203/212 looper letters, 213 selfloop transitions, 22 changer transitions 0/235 dead transitions. [2023-08-26 20:51:22,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 235 transitions, 1243 flow [2023-08-26 20:51:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 20:51:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 20:51:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 885 transitions. [2023-08-26 20:51:22,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5218160377358491 [2023-08-26 20:51:22,901 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 885 transitions. [2023-08-26 20:51:22,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 885 transitions. [2023-08-26 20:51:22,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:51:22,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 885 transitions. [2023-08-26 20:51:22,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.625) internal successors, (885), 8 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) [2023-08-26 20:51:22,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:22,908 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:22,908 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 162 flow. Second operand 8 states and 885 transitions. [2023-08-26 20:51:22,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 235 transitions, 1243 flow [2023-08-26 20:51:23,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 235 transitions, 1177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 20:51:23,537 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 295 flow [2023-08-26 20:51:23,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=295, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-08-26 20:51:23,537 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2023-08-26 20:51:23,538 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 295 flow [2023-08-26 20:51:23,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:23,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:51:23,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:51:23,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 20:51:23,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:51:23,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:51:23,541 INFO L85 PathProgramCache]: Analyzing trace with hash -154528223, now seen corresponding path program 1 times [2023-08-26 20:51:23,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:51:23,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991362967] [2023-08-26 20:51:23,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:51:23,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:51:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:51:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:51:23,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:51:23,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991362967] [2023-08-26 20:51:23,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991362967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:51:23,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:51:23,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:51:23,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54423655] [2023-08-26 20:51:23,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:51:23,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:51:23,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:51:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:51:23,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 20:51:23,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 212 [2023-08-26 20:51:23,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:23,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:51:23,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 212 [2023-08-26 20:51:23,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:51:25,022 INFO L124 PetriNetUnfolderBase]: 13008/22436 cut-off events. [2023-08-26 20:51:25,022 INFO L125 PetriNetUnfolderBase]: For 9797/10333 co-relation queries the response was YES. [2023-08-26 20:51:25,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57538 conditions, 22436 events. 13008/22436 cut-off events. For 9797/10333 co-relation queries the response was YES. Maximal size of possible extension queue 1547. Compared 194338 event pairs, 3587 based on Foata normal form. 1854/19490 useless extension candidates. Maximal degree in co-relation 43102. Up to 10788 conditions per place. [2023-08-26 20:51:25,113 INFO L140 encePairwiseOnDemand]: 197/212 looper letters, 76 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2023-08-26 20:51:25,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 115 transitions, 623 flow [2023-08-26 20:51:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:51:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:51:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 485 transitions. [2023-08-26 20:51:25,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5719339622641509 [2023-08-26 20:51:25,114 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 485 transitions. [2023-08-26 20:51:25,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 485 transitions. [2023-08-26 20:51:25,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:51:25,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 485 transitions. [2023-08-26 20:51:25,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:25,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:25,117 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:25,117 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 295 flow. Second operand 4 states and 485 transitions. [2023-08-26 20:51:25,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 115 transitions, 623 flow [2023-08-26 20:51:25,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 115 transitions, 623 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 20:51:25,163 INFO L231 Difference]: Finished difference. Result has 69 places, 75 transitions, 384 flow [2023-08-26 20:51:25,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=69, PETRI_TRANSITIONS=75} [2023-08-26 20:51:25,163 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2023-08-26 20:51:25,164 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 75 transitions, 384 flow [2023-08-26 20:51:25,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:25,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:51:25,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:51:25,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 20:51:25,168 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:51:25,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:51:25,168 INFO L85 PathProgramCache]: Analyzing trace with hash 600597368, now seen corresponding path program 1 times [2023-08-26 20:51:25,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:51:25,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416726625] [2023-08-26 20:51:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:51:25,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:51:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:51:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:51:25,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:51:25,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416726625] [2023-08-26 20:51:25,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416726625] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:51:25,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:51:25,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:51:25,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048340370] [2023-08-26 20:51:25,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:51:25,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:51:25,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:51:25,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:51:25,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 20:51:25,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 212 [2023-08-26 20:51:25,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 75 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:25,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:51:25,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 212 [2023-08-26 20:51:25,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:51:26,363 INFO L124 PetriNetUnfolderBase]: 11251/20208 cut-off events. [2023-08-26 20:51:26,363 INFO L125 PetriNetUnfolderBase]: For 19731/20261 co-relation queries the response was YES. [2023-08-26 20:51:26,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59026 conditions, 20208 events. 11251/20208 cut-off events. For 19731/20261 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 180150 event pairs, 2318 based on Foata normal form. 1076/19433 useless extension candidates. Maximal degree in co-relation 42522. Up to 10626 conditions per place. [2023-08-26 20:51:26,479 INFO L140 encePairwiseOnDemand]: 199/212 looper letters, 69 selfloop transitions, 13 changer transitions 0/108 dead transitions. [2023-08-26 20:51:26,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 108 transitions, 651 flow [2023-08-26 20:51:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:51:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:51:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 473 transitions. [2023-08-26 20:51:26,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5577830188679245 [2023-08-26 20:51:26,487 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 473 transitions. [2023-08-26 20:51:26,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 473 transitions. [2023-08-26 20:51:26,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:51:26,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 473 transitions. [2023-08-26 20:51:26,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:26,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:26,490 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:26,490 INFO L175 Difference]: Start difference. First operand has 69 places, 75 transitions, 384 flow. Second operand 4 states and 473 transitions. [2023-08-26 20:51:26,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 108 transitions, 651 flow [2023-08-26 20:51:26,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 108 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:51:26,551 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 401 flow [2023-08-26 20:51:26,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=401, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2023-08-26 20:51:26,552 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-08-26 20:51:26,552 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 401 flow [2023-08-26 20:51:26,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:26,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:51:26,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:51:26,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 20:51:26,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr2ASSERT_VIOLATIONASSERT === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:51:26,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:51:26,553 INFO L85 PathProgramCache]: Analyzing trace with hash -777951817, now seen corresponding path program 1 times [2023-08-26 20:51:26,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:51:26,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632676024] [2023-08-26 20:51:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:51:26,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:51:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:51:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:51:26,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:51:26,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632676024] [2023-08-26 20:51:26,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632676024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:51:26,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:51:26,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:51:26,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036482657] [2023-08-26 20:51:26,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:51:26,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:51:26,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:51:26,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:51:26,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:51:26,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 212 [2023-08-26 20:51:26,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:26,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:51:26,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 212 [2023-08-26 20:51:26,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:51:26,886 INFO L124 PetriNetUnfolderBase]: 2340/4680 cut-off events. [2023-08-26 20:51:26,886 INFO L125 PetriNetUnfolderBase]: For 7027/7261 co-relation queries the response was YES. [2023-08-26 20:51:26,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14695 conditions, 4680 events. 2340/4680 cut-off events. For 7027/7261 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 36836 event pairs, 1190 based on Foata normal form. 376/4727 useless extension candidates. Maximal degree in co-relation 8610. Up to 2846 conditions per place. [2023-08-26 20:51:26,906 INFO L140 encePairwiseOnDemand]: 206/212 looper letters, 51 selfloop transitions, 8 changer transitions 9/92 dead transitions. [2023-08-26 20:51:26,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 606 flow [2023-08-26 20:51:26,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:51:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:51:26,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-26 20:51:26,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424528301886793 [2023-08-26 20:51:26,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-26 20:51:26,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-26 20:51:26,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:51:26,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-26 20:51:26,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:26,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:26,909 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:26,909 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 401 flow. Second operand 3 states and 345 transitions. [2023-08-26 20:51:26,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 606 flow [2023-08-26 20:51:26,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 595 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:51:26,919 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 393 flow [2023-08-26 20:51:26,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2023-08-26 20:51:26,920 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-08-26 20:51:26,920 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 393 flow [2023-08-26 20:51:26,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:26,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:51:26,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:51:26,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 20:51:26,921 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr2ASSERT_VIOLATIONASSERT === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:51:26,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:51:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash -443292710, now seen corresponding path program 1 times [2023-08-26 20:51:26,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:51:26,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303655109] [2023-08-26 20:51:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:51:26,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:51:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:51:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:51:27,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:51:27,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303655109] [2023-08-26 20:51:27,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303655109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:51:27,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:51:27,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 20:51:27,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554627804] [2023-08-26 20:51:27,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:51:27,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 20:51:27,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:51:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 20:51:27,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 20:51:27,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 212 [2023-08-26 20:51:27,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 393 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:27,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:51:27,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 212 [2023-08-26 20:51:27,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:51:27,619 INFO L124 PetriNetUnfolderBase]: 4165/7420 cut-off events. [2023-08-26 20:51:27,619 INFO L125 PetriNetUnfolderBase]: For 12896/12896 co-relation queries the response was YES. [2023-08-26 20:51:27,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24735 conditions, 7420 events. 4165/7420 cut-off events. For 12896/12896 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 51296 event pairs, 707 based on Foata normal form. 0/7306 useless extension candidates. Maximal degree in co-relation 17224. Up to 2944 conditions per place. [2023-08-26 20:51:27,646 INFO L140 encePairwiseOnDemand]: 203/212 looper letters, 160 selfloop transitions, 32 changer transitions 23/215 dead transitions. [2023-08-26 20:51:27,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 215 transitions, 1623 flow [2023-08-26 20:51:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 20:51:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 20:51:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 843 transitions. [2023-08-26 20:51:27,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970518867924528 [2023-08-26 20:51:27,648 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 843 transitions. [2023-08-26 20:51:27,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 843 transitions. [2023-08-26 20:51:27,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:51:27,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 843 transitions. [2023-08-26 20:51:27,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 105.375) internal successors, (843), 8 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:27,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:27,652 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:27,653 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 393 flow. Second operand 8 states and 843 transitions. [2023-08-26 20:51:27,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 215 transitions, 1623 flow [2023-08-26 20:51:27,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 215 transitions, 1543 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 20:51:27,675 INFO L231 Difference]: Finished difference. Result has 81 places, 91 transitions, 644 flow [2023-08-26 20:51:27,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=644, PETRI_PLACES=81, PETRI_TRANSITIONS=91} [2023-08-26 20:51:27,676 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2023-08-26 20:51:27,676 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 91 transitions, 644 flow [2023-08-26 20:51:27,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:27,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:51:27,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:51:27,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 20:51:27,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:51:27,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:51:27,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2041893960, now seen corresponding path program 1 times [2023-08-26 20:51:27,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:51:27,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895415459] [2023-08-26 20:51:27,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:51:27,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:51:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:51:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:51:27,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:51:27,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895415459] [2023-08-26 20:51:27,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895415459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:51:27,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:51:27,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:51:27,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786601314] [2023-08-26 20:51:27,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:51:27,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:51:27,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:51:27,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:51:27,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:51:27,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 212 [2023-08-26 20:51:27,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 644 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:27,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:51:27,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 212 [2023-08-26 20:51:27,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:51:27,989 INFO L124 PetriNetUnfolderBase]: 1698/3591 cut-off events. [2023-08-26 20:51:27,990 INFO L125 PetriNetUnfolderBase]: For 9160/9471 co-relation queries the response was YES. [2023-08-26 20:51:27,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12562 conditions, 3591 events. 1698/3591 cut-off events. For 9160/9471 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 28172 event pairs, 1223 based on Foata normal form. 440/3880 useless extension candidates. Maximal degree in co-relation 9673. Up to 2900 conditions per place. [2023-08-26 20:51:28,006 INFO L140 encePairwiseOnDemand]: 209/212 looper letters, 38 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-08-26 20:51:28,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 87 transitions, 690 flow [2023-08-26 20:51:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:51:28,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:51:28,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-08-26 20:51:28,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2023-08-26 20:51:28,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-08-26 20:51:28,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-08-26 20:51:28,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:51:28,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-08-26 20:51:28,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,010 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 644 flow. Second operand 3 states and 330 transitions. [2023-08-26 20:51:28,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 87 transitions, 690 flow [2023-08-26 20:51:28,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 87 transitions, 671 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 20:51:28,023 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 595 flow [2023-08-26 20:51:28,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=595, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2023-08-26 20:51:28,024 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2023-08-26 20:51:28,024 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 595 flow [2023-08-26 20:51:28,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:51:28,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:51:28,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 20:51:28,026 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:51:28,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:51:28,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1113714122, now seen corresponding path program 1 times [2023-08-26 20:51:28,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:51:28,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415418742] [2023-08-26 20:51:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:51:28,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:51:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:51:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:51:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:51:28,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415418742] [2023-08-26 20:51:28,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415418742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:51:28,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:51:28,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:51:28,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244166824] [2023-08-26 20:51:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:51:28,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:51:28,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:51:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:51:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:51:28,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 212 [2023-08-26 20:51:28,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 595 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:51:28,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 212 [2023-08-26 20:51:28,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:51:28,307 INFO L124 PetriNetUnfolderBase]: 1628/3409 cut-off events. [2023-08-26 20:51:28,308 INFO L125 PetriNetUnfolderBase]: For 6998/7305 co-relation queries the response was YES. [2023-08-26 20:51:28,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11549 conditions, 3409 events. 1628/3409 cut-off events. For 6998/7305 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 26293 event pairs, 1165 based on Foata normal form. 248/3506 useless extension candidates. Maximal degree in co-relation 11522. Up to 2746 conditions per place. [2023-08-26 20:51:28,319 INFO L140 encePairwiseOnDemand]: 209/212 looper letters, 36 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2023-08-26 20:51:28,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 85 transitions, 657 flow [2023-08-26 20:51:28,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:51:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:51:28,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-08-26 20:51:28,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2023-08-26 20:51:28,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-08-26 20:51:28,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-08-26 20:51:28,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:51:28,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-08-26 20:51:28,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,322 INFO L175 Difference]: Start difference. First operand has 78 places, 87 transitions, 595 flow. Second operand 3 states and 328 transitions. [2023-08-26 20:51:28,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 85 transitions, 657 flow [2023-08-26 20:51:28,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:51:28,333 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 584 flow [2023-08-26 20:51:28,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=584, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2023-08-26 20:51:28,333 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2023-08-26 20:51:28,333 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 584 flow [2023-08-26 20:51:28,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:51:28,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:51:28,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 20:51:28,334 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr2ASSERT_VIOLATIONASSERT === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:51:28,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:51:28,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1846273614, now seen corresponding path program 1 times [2023-08-26 20:51:28,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:51:28,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135942508] [2023-08-26 20:51:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:51:28,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:51:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:51:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:51:28,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:51:28,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135942508] [2023-08-26 20:51:28,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135942508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:51:28,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:51:28,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 20:51:28,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503120530] [2023-08-26 20:51:28,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:51:28,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 20:51:28,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:51:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 20:51:28,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 20:51:28,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 212 [2023-08-26 20:51:28,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 584 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:51:28,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 212 [2023-08-26 20:51:28,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:51:28,820 INFO L124 PetriNetUnfolderBase]: 3056/5461 cut-off events. [2023-08-26 20:51:28,820 INFO L125 PetriNetUnfolderBase]: For 10125/10125 co-relation queries the response was YES. [2023-08-26 20:51:28,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19258 conditions, 5461 events. 3056/5461 cut-off events. For 10125/10125 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 35649 event pairs, 399 based on Foata normal form. 58/5519 useless extension candidates. Maximal degree in co-relation 19230. Up to 2018 conditions per place. [2023-08-26 20:51:28,846 INFO L140 encePairwiseOnDemand]: 203/212 looper letters, 144 selfloop transitions, 44 changer transitions 12/200 dead transitions. [2023-08-26 20:51:28,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 200 transitions, 1545 flow [2023-08-26 20:51:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 20:51:28,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 20:51:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 831 transitions. [2023-08-26 20:51:28,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48997641509433965 [2023-08-26 20:51:28,848 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 831 transitions. [2023-08-26 20:51:28,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 831 transitions. [2023-08-26 20:51:28,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:51:28,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 831 transitions. [2023-08-26 20:51:28,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 103.875) internal successors, (831), 8 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,852 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,852 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 584 flow. Second operand 8 states and 831 transitions. [2023-08-26 20:51:28,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 200 transitions, 1545 flow [2023-08-26 20:51:28,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 200 transitions, 1544 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:51:28,880 INFO L231 Difference]: Finished difference. Result has 86 places, 98 transitions, 817 flow [2023-08-26 20:51:28,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=817, PETRI_PLACES=86, PETRI_TRANSITIONS=98} [2023-08-26 20:51:28,881 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2023-08-26 20:51:28,881 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 98 transitions, 817 flow [2023-08-26 20:51:28,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:51:28,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:51:28,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 20:51:28,881 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr2ASSERT_VIOLATIONASSERT === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:51:28,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:51:28,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1102803289, now seen corresponding path program 1 times [2023-08-26 20:51:28,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:51:28,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022497901] [2023-08-26 20:51:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:51:28,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:51:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:51:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:51:28,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:51:28,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022497901] [2023-08-26 20:51:28,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022497901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:51:28,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:51:28,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 20:51:28,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253038911] [2023-08-26 20:51:28,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:51:28,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 20:51:28,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:51:28,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 20:51:28,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 20:51:28,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 212 [2023-08-26 20:51:28,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 98 transitions, 817 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:28,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:51:28,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 212 [2023-08-26 20:51:28,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:51:29,455 INFO L124 PetriNetUnfolderBase]: 2950/5289 cut-off events. [2023-08-26 20:51:29,455 INFO L125 PetriNetUnfolderBase]: For 13717/13717 co-relation queries the response was YES. [2023-08-26 20:51:29,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20106 conditions, 5289 events. 2950/5289 cut-off events. For 13717/13717 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 34557 event pairs, 459 based on Foata normal form. 66/5355 useless extension candidates. Maximal degree in co-relation 20074. Up to 2050 conditions per place. [2023-08-26 20:51:29,476 INFO L140 encePairwiseOnDemand]: 203/212 looper letters, 148 selfloop transitions, 53 changer transitions 12/213 dead transitions. [2023-08-26 20:51:29,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 213 transitions, 1835 flow [2023-08-26 20:51:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 20:51:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 20:51:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 833 transitions. [2023-08-26 20:51:29,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49115566037735847 [2023-08-26 20:51:29,479 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 833 transitions. [2023-08-26 20:51:29,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 833 transitions. [2023-08-26 20:51:29,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:51:29,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 833 transitions. [2023-08-26 20:51:29,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 104.125) internal successors, (833), 8 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:29,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:29,482 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:29,482 INFO L175 Difference]: Start difference. First operand has 86 places, 98 transitions, 817 flow. Second operand 8 states and 833 transitions. [2023-08-26 20:51:29,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 213 transitions, 1835 flow [2023-08-26 20:51:29,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 213 transitions, 1825 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 20:51:29,517 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 1088 flow [2023-08-26 20:51:29,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1088, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2023-08-26 20:51:29,519 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2023-08-26 20:51:29,519 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 1088 flow [2023-08-26 20:51:29,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:29,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:51:29,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:51:29,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 20:51:29,520 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:51:29,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:51:29,520 INFO L85 PathProgramCache]: Analyzing trace with hash -934372363, now seen corresponding path program 1 times [2023-08-26 20:51:29,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:51:29,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534471762] [2023-08-26 20:51:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:51:29,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:51:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:51:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:51:29,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:51:29,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534471762] [2023-08-26 20:51:29,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534471762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:51:29,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:51:29,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:51:29,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392319221] [2023-08-26 20:51:29,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:51:29,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 20:51:29,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:51:29,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 20:51:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 20:51:29,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 212 [2023-08-26 20:51:29,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 1088 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:29,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:51:29,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 212 [2023-08-26 20:51:29,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:51:29,871 INFO L124 PetriNetUnfolderBase]: 1220/2973 cut-off events. [2023-08-26 20:51:29,871 INFO L125 PetriNetUnfolderBase]: For 10005/10250 co-relation queries the response was YES. [2023-08-26 20:51:29,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11357 conditions, 2973 events. 1220/2973 cut-off events. For 10005/10250 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 24703 event pairs, 429 based on Foata normal form. 361/3192 useless extension candidates. Maximal degree in co-relation 11321. Up to 1097 conditions per place. [2023-08-26 20:51:29,884 INFO L140 encePairwiseOnDemand]: 203/212 looper letters, 46 selfloop transitions, 9 changer transitions 37/146 dead transitions. [2023-08-26 20:51:29,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 146 transitions, 1341 flow [2023-08-26 20:51:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 20:51:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 20:51:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 567 transitions. [2023-08-26 20:51:29,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349056603773585 [2023-08-26 20:51:29,886 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 567 transitions. [2023-08-26 20:51:29,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 567 transitions. [2023-08-26 20:51:29,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:51:29,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 567 transitions. [2023-08-26 20:51:29,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:29,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:29,889 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:29,889 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 1088 flow. Second operand 5 states and 567 transitions. [2023-08-26 20:51:29,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 146 transitions, 1341 flow [2023-08-26 20:51:29,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 146 transitions, 1332 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 20:51:29,919 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 855 flow [2023-08-26 20:51:29,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=855, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2023-08-26 20:51:29,919 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2023-08-26 20:51:29,919 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 855 flow [2023-08-26 20:51:29,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:29,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:51:29,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:51:29,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 20:51:29,920 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:51:29,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:51:29,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1752168511, now seen corresponding path program 2 times [2023-08-26 20:51:29,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:51:29,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331621255] [2023-08-26 20:51:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:51:29,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:51:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:51:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:51:29,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:51:29,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331621255] [2023-08-26 20:51:29,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331621255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:51:29,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:51:29,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:51:29,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325088102] [2023-08-26 20:51:29,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:51:29,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 20:51:29,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:51:29,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 20:51:29,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 20:51:29,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 212 [2023-08-26 20:51:29,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 855 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:29,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:51:29,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 212 [2023-08-26 20:51:29,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:51:30,093 INFO L124 PetriNetUnfolderBase]: 326/1044 cut-off events. [2023-08-26 20:51:30,093 INFO L125 PetriNetUnfolderBase]: For 3961/3961 co-relation queries the response was YES. [2023-08-26 20:51:30,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4226 conditions, 1044 events. 326/1044 cut-off events. For 3961/3961 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7114 event pairs, 100 based on Foata normal form. 74/1102 useless extension candidates. Maximal degree in co-relation 4188. Up to 324 conditions per place. [2023-08-26 20:51:30,097 INFO L140 encePairwiseOnDemand]: 203/212 looper letters, 0 selfloop transitions, 0 changer transitions 75/75 dead transitions. [2023-08-26 20:51:30,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 75 transitions, 559 flow [2023-08-26 20:51:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 20:51:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 20:51:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2023-08-26 20:51:30,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2023-08-26 20:51:30,098 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2023-08-26 20:51:30,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2023-08-26 20:51:30,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:51:30,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2023-08-26 20:51:30,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 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) [2023-08-26 20:51:30,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:30,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:30,101 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 855 flow. Second operand 5 states and 550 transitions. [2023-08-26 20:51:30,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 75 transitions, 559 flow [2023-08-26 20:51:30,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 439 flow, removed 12 selfloop flow, removed 24 redundant places. [2023-08-26 20:51:30,109 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2023-08-26 20:51:30,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2023-08-26 20:51:30,111 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-08-26 20:51:30,111 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2023-08-26 20:51:30,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:51:30,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-26 20:51:30,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-26 20:51:30,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-26 20:51:30,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-26 20:51:30,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONASSERT (14 of 19 remaining) [2023-08-26 20:51:30,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 19 remaining) [2023-08-26 20:51:30,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 19 remaining) [2023-08-26 20:51:30,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 19 remaining) [2023-08-26 20:51:30,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 19 remaining) [2023-08-26 20:51:30,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-26 20:51:30,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-26 20:51:30,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-26 20:51:30,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-26 20:51:30,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONASSERT (5 of 19 remaining) [2023-08-26 20:51:30,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-26 20:51:30,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-26 20:51:30,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-26 20:51:30,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-26 20:51:30,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONASSERT (0 of 19 remaining) [2023-08-26 20:51:30,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 20:51:30,121 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:51:30,125 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 20:51:30,125 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 20:51:30,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 08:51:30 BasicIcfg [2023-08-26 20:51:30,131 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 20:51:30,131 INFO L158 Benchmark]: Toolchain (without parser) took 16311.19ms. Allocated memory was 377.5MB in the beginning and 8.9GB in the end (delta: 8.6GB). Free memory was 352.1MB in the beginning and 7.9GB in the end (delta: -7.5GB). Peak memory consumption was 1.0GB. Max. memory is 16.0GB. [2023-08-26 20:51:30,131 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 377.5MB. Free memory was 355.5MB in the beginning and 355.3MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 20:51:30,131 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.19ms. Allocated memory is still 377.5MB. Free memory was 352.1MB in the beginning and 332.4MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 20:51:30,131 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.32ms. Allocated memory is still 377.5MB. Free memory was 332.4MB in the beginning and 329.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 20:51:30,132 INFO L158 Benchmark]: Boogie Preprocessor took 26.50ms. Allocated memory is still 377.5MB. Free memory was 329.8MB in the beginning and 328.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 20:51:30,132 INFO L158 Benchmark]: RCFGBuilder took 400.72ms. Allocated memory is still 377.5MB. Free memory was 328.2MB in the beginning and 309.4MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 20:51:30,133 INFO L158 Benchmark]: TraceAbstraction took 15460.69ms. Allocated memory was 377.5MB in the beginning and 8.9GB in the end (delta: 8.6GB). Free memory was 308.9MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 978.6MB. Max. memory is 16.0GB. [2023-08-26 20:51:30,134 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 377.5MB. Free memory was 355.5MB in the beginning and 355.3MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 370.19ms. Allocated memory is still 377.5MB. Free memory was 352.1MB in the beginning and 332.4MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.32ms. Allocated memory is still 377.5MB. Free memory was 332.4MB in the beginning and 329.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.50ms. Allocated memory is still 377.5MB. Free memory was 329.8MB in the beginning and 328.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 400.72ms. Allocated memory is still 377.5MB. Free memory was 328.2MB in the beginning and 309.4MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 15460.69ms. Allocated memory was 377.5MB in the beginning and 8.9GB in the end (delta: 8.6GB). Free memory was 308.9MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 978.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 118 PlacesBefore, 56 PlacesAfterwards, 109 TransitionsBefore, 45 TransitionsAfterwards, 4046 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 86 TotalNumberOfCompositions, 11351 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5866, independent: 5645, independent conditional: 0, independent unconditional: 5645, dependent: 221, dependent conditional: 0, dependent unconditional: 221, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2216, independent: 2177, independent conditional: 0, independent unconditional: 2177, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5866, independent: 3468, independent conditional: 0, independent unconditional: 3468, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 2216, unknown conditional: 0, unknown unconditional: 2216] , Statistics on independence cache: Total cache size (in pairs): 318, Positive cache size: 299, Positive conditional cache size: 0, Positive unconditional cache size: 299, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 156 locations, 19 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: 15.3s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 720 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 720 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1830 IncrementalHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 49 mSDtfsCounter, 1830 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1088occurred in iteration=10, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 20:51:30,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...