/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:45:14,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:45:14,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:45:14,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:45:14,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:45:14,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:45:14,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:45:14,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:45:14,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:45:14,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:45:14,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:45:14,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:45:14,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:45:14,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:45:14,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:45:14,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:45:14,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:45:14,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:45:14,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:45:14,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:45:14,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:45:14,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:45:14,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:45:14,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:45:14,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-20 20:45:14,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:45:14,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:45:14,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:45:14,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 20:45:14,222 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:45:14,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:45:14,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:45:14,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:45:14,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:45:14,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:45:14,224 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:45:14,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:45:14,224 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:45:14,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:45:14,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:45:14,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:45:14,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:45:14,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:45:14,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:45:14,225 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:45:14,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:45:14,226 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:45:14,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:45:14,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:45:14,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:45:14,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:45:14,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:45:14,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:45:14,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:45:14,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:45:14,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:45:14,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:45:14,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:45:14,228 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:45:14,228 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:45:14,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:45:14,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:45:14,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:45:14,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:45:14,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:45:14,498 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:45:14,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2022-09-20 20:45:14,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448773143/77dd0d496bd24cd3b85cce18d6c002c2/FLAGe527b5990 [2022-09-20 20:45:14,994 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:45:14,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2022-09-20 20:45:15,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448773143/77dd0d496bd24cd3b85cce18d6c002c2/FLAGe527b5990 [2022-09-20 20:45:15,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448773143/77dd0d496bd24cd3b85cce18d6c002c2 [2022-09-20 20:45:15,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:45:15,363 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:45:15,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:45:15,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:45:15,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:45:15,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:45:15" (1/1) ... [2022-09-20 20:45:15,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@246118cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15, skipping insertion in model container [2022-09-20 20:45:15,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:45:15" (1/1) ... [2022-09-20 20:45:15,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:45:15,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:45:15,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2022-09-20 20:45:15,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:45:15,784 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:45:15,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2022-09-20 20:45:15,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:45:15,877 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:45:15,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15 WrapperNode [2022-09-20 20:45:15,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:45:15,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:45:15,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:45:15,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:45:15,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15" (1/1) ... [2022-09-20 20:45:15,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15" (1/1) ... [2022-09-20 20:45:15,940 INFO L138 Inliner]: procedures = 163, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 104 [2022-09-20 20:45:15,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:45:15,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:45:15,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:45:15,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:45:15,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15" (1/1) ... [2022-09-20 20:45:15,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15" (1/1) ... [2022-09-20 20:45:15,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15" (1/1) ... [2022-09-20 20:45:15,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15" (1/1) ... [2022-09-20 20:45:15,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15" (1/1) ... [2022-09-20 20:45:15,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15" (1/1) ... [2022-09-20 20:45:15,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15" (1/1) ... [2022-09-20 20:45:15,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:45:15,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:45:15,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:45:15,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:45:15,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15" (1/1) ... [2022-09-20 20:45:15,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:45:15,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:45:16,002 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) [2022-09-20 20:45:16,018 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 [2022-09-20 20:45:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:45:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-09-20 20:45:16,035 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-09-20 20:45:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:45:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-20 20:45:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:45:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:45:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-09-20 20:45:16,036 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-09-20 20:45:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:45:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:45:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:45:16,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:45:16,038 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 20:45:16,168 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:45:16,170 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:45:16,389 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:45:16,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:45:16,397 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 20:45:16,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:45:16 BoogieIcfgContainer [2022-09-20 20:45:16,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:45:16,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:45:16,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:45:16,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:45:16,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:45:15" (1/3) ... [2022-09-20 20:45:16,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c121df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:45:16, skipping insertion in model container [2022-09-20 20:45:16,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:45:15" (2/3) ... [2022-09-20 20:45:16,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c121df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:45:16, skipping insertion in model container [2022-09-20 20:45:16,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:45:16" (3/3) ... [2022-09-20 20:45:16,407 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2022-09-20 20:45:16,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:45:16,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-09-20 20:45:16,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:45:16,472 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 20:45:16,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 334 flow [2022-09-20 20:45:16,567 INFO L130 PetriNetUnfolder]: 4/157 cut-off events. [2022-09-20 20:45:16,567 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 20:45:16,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 157 events. 4/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2022-09-20 20:45:16,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 334 flow [2022-09-20 20:45:16,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 137 transitions, 280 flow [2022-09-20 20:45:16,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:45:16,592 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;@3577e62b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:45:16,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-09-20 20:45:16,620 INFO L130 PetriNetUnfolder]: 1/91 cut-off events. [2022-09-20 20:45:16,620 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 20:45:16,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:16,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:16,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-09-20 20:45:16,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:16,626 INFO L85 PathProgramCache]: Analyzing trace with hash 811554038, now seen corresponding path program 1 times [2022-09-20 20:45:16,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:16,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163230805] [2022-09-20 20:45:16,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:16,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:17,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:17,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163230805] [2022-09-20 20:45:17,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163230805] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:17,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:17,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:45:17,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80081395] [2022-09-20 20:45:17,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:17,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:45:17,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:17,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:45:17,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:45:17,083 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 159 [2022-09-20 20:45:17,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:17,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:17,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 159 [2022-09-20 20:45:17,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:17,361 INFO L130 PetriNetUnfolder]: 93/563 cut-off events. [2022-09-20 20:45:17,362 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-20 20:45:17,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 563 events. 93/563 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2796 event pairs, 24 based on Foata normal form. 16/563 useless extension candidates. Maximal degree in co-relation 756. Up to 78 conditions per place. [2022-09-20 20:45:17,373 INFO L137 encePairwiseOnDemand]: 138/159 looper letters, 37 selfloop transitions, 23 changer transitions 5/170 dead transitions. [2022-09-20 20:45:17,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 170 transitions, 479 flow [2022-09-20 20:45:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:45:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:45:17,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1173 transitions. [2022-09-20 20:45:17,398 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8197064989517819 [2022-09-20 20:45:17,399 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1173 transitions. [2022-09-20 20:45:17,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1173 transitions. [2022-09-20 20:45:17,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:17,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1173 transitions. [2022-09-20 20:45:17,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 130.33333333333334) internal successors, (1173), 9 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:17,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:17,424 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:17,426 INFO L175 Difference]: Start difference. First operand has 141 places, 137 transitions, 280 flow. Second operand 9 states and 1173 transitions. [2022-09-20 20:45:17,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 170 transitions, 479 flow [2022-09-20 20:45:17,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 170 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:45:17,436 INFO L231 Difference]: Finished difference. Result has 151 places, 148 transitions, 415 flow [2022-09-20 20:45:17,438 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=415, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2022-09-20 20:45:17,444 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 10 predicate places. [2022-09-20 20:45:17,444 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 415 flow [2022-09-20 20:45:17,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:17,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:17,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:17,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:45:17,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-09-20 20:45:17,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:17,449 INFO L85 PathProgramCache]: Analyzing trace with hash 235319527, now seen corresponding path program 1 times [2022-09-20 20:45:17,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:17,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074178029] [2022-09-20 20:45:17,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:17,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:17,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:17,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074178029] [2022-09-20 20:45:17,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074178029] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:17,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:17,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:45:17,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964894914] [2022-09-20 20:45:17,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:17,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:45:17,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:45:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:45:17,628 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 159 [2022-09-20 20:45:17,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 415 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:17,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:17,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 159 [2022-09-20 20:45:17,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:18,080 INFO L130 PetriNetUnfolder]: 370/1820 cut-off events. [2022-09-20 20:45:18,081 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2022-09-20 20:45:18,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 1820 events. 370/1820 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13685 event pairs, 95 based on Foata normal form. 91/1889 useless extension candidates. Maximal degree in co-relation 3058. Up to 551 conditions per place. [2022-09-20 20:45:18,098 INFO L137 encePairwiseOnDemand]: 152/159 looper letters, 50 selfloop transitions, 7 changer transitions 0/169 dead transitions. [2022-09-20 20:45:18,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 169 transitions, 573 flow [2022-09-20 20:45:18,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 20:45:18,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 20:45:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 614 transitions. [2022-09-20 20:45:18,105 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7723270440251573 [2022-09-20 20:45:18,106 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 614 transitions. [2022-09-20 20:45:18,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 614 transitions. [2022-09-20 20:45:18,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:18,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 614 transitions. [2022-09-20 20:45:18,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:18,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:18,110 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:18,110 INFO L175 Difference]: Start difference. First operand has 151 places, 148 transitions, 415 flow. Second operand 5 states and 614 transitions. [2022-09-20 20:45:18,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 169 transitions, 573 flow [2022-09-20 20:45:18,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 169 transitions, 556 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-09-20 20:45:18,125 INFO L231 Difference]: Finished difference. Result has 154 places, 151 transitions, 429 flow [2022-09-20 20:45:18,126 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=154, PETRI_TRANSITIONS=151} [2022-09-20 20:45:18,127 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 13 predicate places. [2022-09-20 20:45:18,127 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 151 transitions, 429 flow [2022-09-20 20:45:18,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:18,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:18,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:18,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:45:18,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-09-20 20:45:18,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:18,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1657823486, now seen corresponding path program 1 times [2022-09-20 20:45:18,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:18,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771596278] [2022-09-20 20:45:18,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:18,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:18,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:18,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771596278] [2022-09-20 20:45:18,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771596278] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:18,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:18,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:45:18,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259504119] [2022-09-20 20:45:18,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:18,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:45:18,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:18,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:45:18,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:45:18,306 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 159 [2022-09-20 20:45:18,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 151 transitions, 429 flow. Second operand has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:18,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:18,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 159 [2022-09-20 20:45:18,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:18,895 INFO L130 PetriNetUnfolder]: 215/1123 cut-off events. [2022-09-20 20:45:18,895 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-09-20 20:45:18,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 1123 events. 215/1123 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7280 event pairs, 9 based on Foata normal form. 16/1128 useless extension candidates. Maximal degree in co-relation 2019. Up to 69 conditions per place. [2022-09-20 20:45:18,903 INFO L137 encePairwiseOnDemand]: 136/159 looper letters, 95 selfloop transitions, 103 changer transitions 7/311 dead transitions. [2022-09-20 20:45:18,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 311 transitions, 1467 flow [2022-09-20 20:45:18,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-20 20:45:18,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-09-20 20:45:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3310 transitions. [2022-09-20 20:45:18,911 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8006773101112724 [2022-09-20 20:45:18,911 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3310 transitions. [2022-09-20 20:45:18,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3310 transitions. [2022-09-20 20:45:18,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:18,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3310 transitions. [2022-09-20 20:45:18,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 127.3076923076923) internal successors, (3310), 26 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:18,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 159.0) internal successors, (4293), 27 states have internal predecessors, (4293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:18,931 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 159.0) internal successors, (4293), 27 states have internal predecessors, (4293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:18,931 INFO L175 Difference]: Start difference. First operand has 154 places, 151 transitions, 429 flow. Second operand 26 states and 3310 transitions. [2022-09-20 20:45:18,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 311 transitions, 1467 flow [2022-09-20 20:45:18,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 311 transitions, 1464 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:45:18,941 INFO L231 Difference]: Finished difference. Result has 185 places, 232 transitions, 1130 flow [2022-09-20 20:45:18,941 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1130, PETRI_PLACES=185, PETRI_TRANSITIONS=232} [2022-09-20 20:45:18,943 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 44 predicate places. [2022-09-20 20:45:18,944 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 232 transitions, 1130 flow [2022-09-20 20:45:18,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:18,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:18,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:18,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:45:18,945 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-09-20 20:45:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:18,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1808695242, now seen corresponding path program 1 times [2022-09-20 20:45:18,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:18,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735265978] [2022-09-20 20:45:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:19,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:19,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735265978] [2022-09-20 20:45:19,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735265978] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:19,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:19,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:45:19,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9059518] [2022-09-20 20:45:19,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:19,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:45:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:19,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:45:19,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:45:19,102 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 159 [2022-09-20 20:45:19,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 232 transitions, 1130 flow. Second operand has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:19,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:19,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 159 [2022-09-20 20:45:19,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:19,351 INFO L130 PetriNetUnfolder]: 268/1584 cut-off events. [2022-09-20 20:45:19,351 INFO L131 PetriNetUnfolder]: For 1420/1481 co-relation queries the response was YES. [2022-09-20 20:45:19,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3472 conditions, 1584 events. 268/1584 cut-off events. For 1420/1481 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12217 event pairs, 49 based on Foata normal form. 21/1589 useless extension candidates. Maximal degree in co-relation 3406. Up to 203 conditions per place. [2022-09-20 20:45:19,364 INFO L137 encePairwiseOnDemand]: 147/159 looper letters, 81 selfloop transitions, 76 changer transitions 5/288 dead transitions. [2022-09-20 20:45:19,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 288 transitions, 1811 flow [2022-09-20 20:45:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:45:19,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:45:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1158 transitions. [2022-09-20 20:45:19,368 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8092243186582809 [2022-09-20 20:45:19,368 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1158 transitions. [2022-09-20 20:45:19,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1158 transitions. [2022-09-20 20:45:19,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:19,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1158 transitions. [2022-09-20 20:45:19,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.66666666666666) internal successors, (1158), 9 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:19,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:19,374 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:19,374 INFO L175 Difference]: Start difference. First operand has 185 places, 232 transitions, 1130 flow. Second operand 9 states and 1158 transitions. [2022-09-20 20:45:19,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 288 transitions, 1811 flow [2022-09-20 20:45:19,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 288 transitions, 1756 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-20 20:45:19,395 INFO L231 Difference]: Finished difference. Result has 192 places, 263 transitions, 1547 flow [2022-09-20 20:45:19,395 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=192, PETRI_TRANSITIONS=263} [2022-09-20 20:45:19,397 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 51 predicate places. [2022-09-20 20:45:19,397 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 263 transitions, 1547 flow [2022-09-20 20:45:19,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:19,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:19,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:19,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:45:19,403 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-09-20 20:45:19,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:19,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2078889711, now seen corresponding path program 1 times [2022-09-20 20:45:19,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:19,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056948502] [2022-09-20 20:45:19,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:19,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:19,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:19,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056948502] [2022-09-20 20:45:19,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056948502] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:19,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:19,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:45:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405091681] [2022-09-20 20:45:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:19,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:45:19,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:45:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:45:19,471 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2022-09-20 20:45:19,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 263 transitions, 1547 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:19,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:19,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2022-09-20 20:45:19,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:19,927 INFO L130 PetriNetUnfolder]: 483/2703 cut-off events. [2022-09-20 20:45:19,927 INFO L131 PetriNetUnfolder]: For 1781/1796 co-relation queries the response was YES. [2022-09-20 20:45:19,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5789 conditions, 2703 events. 483/2703 cut-off events. For 1781/1796 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 23125 event pairs, 144 based on Foata normal form. 147/2814 useless extension candidates. Maximal degree in co-relation 5713. Up to 677 conditions per place. [2022-09-20 20:45:19,949 INFO L137 encePairwiseOnDemand]: 141/159 looper letters, 30 selfloop transitions, 19 changer transitions 1/263 dead transitions. [2022-09-20 20:45:19,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 263 transitions, 1534 flow [2022-09-20 20:45:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:45:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:45:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2022-09-20 20:45:19,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8469601677148847 [2022-09-20 20:45:19,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2022-09-20 20:45:19,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2022-09-20 20:45:19,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:19,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2022-09-20 20:45:19,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:19,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:19,954 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:19,954 INFO L175 Difference]: Start difference. First operand has 192 places, 263 transitions, 1547 flow. Second operand 3 states and 404 transitions. [2022-09-20 20:45:19,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 263 transitions, 1534 flow [2022-09-20 20:45:19,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 263 transitions, 1530 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-09-20 20:45:19,974 INFO L231 Difference]: Finished difference. Result has 193 places, 257 transitions, 1489 flow [2022-09-20 20:45:19,975 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1489, PETRI_PLACES=193, PETRI_TRANSITIONS=257} [2022-09-20 20:45:19,977 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 52 predicate places. [2022-09-20 20:45:19,977 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 257 transitions, 1489 flow [2022-09-20 20:45:19,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:19,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:19,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:19,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:45:19,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-09-20 20:45:19,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:19,979 INFO L85 PathProgramCache]: Analyzing trace with hash -377822785, now seen corresponding path program 2 times [2022-09-20 20:45:19,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:19,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241440771] [2022-09-20 20:45:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:19,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:20,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:20,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241440771] [2022-09-20 20:45:20,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241440771] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:20,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:20,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:45:20,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623783339] [2022-09-20 20:45:20,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:20,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:45:20,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:20,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:45:20,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:45:20,210 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 159 [2022-09-20 20:45:20,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 257 transitions, 1489 flow. Second operand has 7 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:20,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:20,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 159 [2022-09-20 20:45:20,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:20,449 INFO L130 PetriNetUnfolder]: 119/981 cut-off events. [2022-09-20 20:45:20,449 INFO L131 PetriNetUnfolder]: For 943/992 co-relation queries the response was YES. [2022-09-20 20:45:20,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2478 conditions, 981 events. 119/981 cut-off events. For 943/992 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6213 event pairs, 39 based on Foata normal form. 51/1022 useless extension candidates. Maximal degree in co-relation 2457. Up to 327 conditions per place. [2022-09-20 20:45:20,457 INFO L137 encePairwiseOnDemand]: 153/159 looper letters, 49 selfloop transitions, 8 changer transitions 17/165 dead transitions. [2022-09-20 20:45:20,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 165 transitions, 857 flow [2022-09-20 20:45:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 20:45:20,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 20:45:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 681 transitions. [2022-09-20 20:45:20,460 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7138364779874213 [2022-09-20 20:45:20,460 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 681 transitions. [2022-09-20 20:45:20,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 681 transitions. [2022-09-20 20:45:20,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:20,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 681 transitions. [2022-09-20 20:45:20,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:20,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:20,464 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:20,465 INFO L175 Difference]: Start difference. First operand has 193 places, 257 transitions, 1489 flow. Second operand 6 states and 681 transitions. [2022-09-20 20:45:20,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 165 transitions, 857 flow [2022-09-20 20:45:20,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 165 transitions, 726 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-09-20 20:45:20,473 INFO L231 Difference]: Finished difference. Result has 157 places, 140 transitions, 493 flow [2022-09-20 20:45:20,474 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=493, PETRI_PLACES=157, PETRI_TRANSITIONS=140} [2022-09-20 20:45:20,474 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 16 predicate places. [2022-09-20 20:45:20,475 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 140 transitions, 493 flow [2022-09-20 20:45:20,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:20,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:20,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:20,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:45:20,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-09-20 20:45:20,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:20,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1399274054, now seen corresponding path program 1 times [2022-09-20 20:45:20,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:20,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444589417] [2022-09-20 20:45:20,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:20,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:20,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:20,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444589417] [2022-09-20 20:45:20,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444589417] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:20,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:20,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:45:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104054397] [2022-09-20 20:45:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:20,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:45:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:45:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:45:20,683 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 159 [2022-09-20 20:45:20,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 140 transitions, 493 flow. Second operand has 8 states, 8 states have (on average 108.75) internal successors, (870), 8 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:20,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:20,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 159 [2022-09-20 20:45:20,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:20,850 INFO L130 PetriNetUnfolder]: 61/586 cut-off events. [2022-09-20 20:45:20,850 INFO L131 PetriNetUnfolder]: For 299/318 co-relation queries the response was YES. [2022-09-20 20:45:20,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 586 events. 61/586 cut-off events. For 299/318 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2995 event pairs, 10 based on Foata normal form. 29/611 useless extension candidates. Maximal degree in co-relation 1238. Up to 135 conditions per place. [2022-09-20 20:45:20,854 INFO L137 encePairwiseOnDemand]: 153/159 looper letters, 50 selfloop transitions, 8 changer transitions 4/149 dead transitions. [2022-09-20 20:45:20,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 149 transitions, 656 flow [2022-09-20 20:45:20,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 20:45:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 20:45:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 680 transitions. [2022-09-20 20:45:20,856 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7127882599580713 [2022-09-20 20:45:20,857 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 680 transitions. [2022-09-20 20:45:20,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 680 transitions. [2022-09-20 20:45:20,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:20,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 680 transitions. [2022-09-20 20:45:20,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:20,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:20,861 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:20,861 INFO L175 Difference]: Start difference. First operand has 157 places, 140 transitions, 493 flow. Second operand 6 states and 680 transitions. [2022-09-20 20:45:20,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 149 transitions, 656 flow [2022-09-20 20:45:20,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 149 transitions, 619 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-09-20 20:45:20,865 INFO L231 Difference]: Finished difference. Result has 145 places, 135 transitions, 444 flow [2022-09-20 20:45:20,865 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=145, PETRI_TRANSITIONS=135} [2022-09-20 20:45:20,866 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 4 predicate places. [2022-09-20 20:45:20,866 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 135 transitions, 444 flow [2022-09-20 20:45:20,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.75) internal successors, (870), 8 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:20,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:20,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:20,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:45:20,867 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-09-20 20:45:20,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:20,867 INFO L85 PathProgramCache]: Analyzing trace with hash 184870354, now seen corresponding path program 1 times [2022-09-20 20:45:20,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:20,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664862444] [2022-09-20 20:45:20,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:20,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:20,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:20,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664862444] [2022-09-20 20:45:20,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664862444] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:20,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:20,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:45:20,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087611446] [2022-09-20 20:45:20,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:20,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:45:20,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:20,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:45:20,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:45:20,984 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 159 [2022-09-20 20:45:20,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 135 transitions, 444 flow. Second operand has 8 states, 8 states have (on average 122.625) internal successors, (981), 8 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:20,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:20,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 159 [2022-09-20 20:45:20,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:21,171 INFO L130 PetriNetUnfolder]: 53/524 cut-off events. [2022-09-20 20:45:21,172 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-09-20 20:45:21,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 524 events. 53/524 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2634 event pairs, 15 based on Foata normal form. 4/525 useless extension candidates. Maximal degree in co-relation 1030. Up to 81 conditions per place. [2022-09-20 20:45:21,174 INFO L137 encePairwiseOnDemand]: 145/159 looper letters, 0 selfloop transitions, 0 changer transitions 161/161 dead transitions. [2022-09-20 20:45:21,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 161 transitions, 669 flow [2022-09-20 20:45:21,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 20:45:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 20:45:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1967 transitions. [2022-09-20 20:45:21,179 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.773191823899371 [2022-09-20 20:45:21,180 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1967 transitions. [2022-09-20 20:45:21,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1967 transitions. [2022-09-20 20:45:21,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:21,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1967 transitions. [2022-09-20 20:45:21,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.9375) internal successors, (1967), 16 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:21,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 159.0) internal successors, (2703), 17 states have internal predecessors, (2703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:21,191 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 159.0) internal successors, (2703), 17 states have internal predecessors, (2703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:21,191 INFO L175 Difference]: Start difference. First operand has 145 places, 135 transitions, 444 flow. Second operand 16 states and 1967 transitions. [2022-09-20 20:45:21,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 161 transitions, 669 flow [2022-09-20 20:45:21,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 161 transitions, 651 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-20 20:45:21,195 INFO L231 Difference]: Finished difference. Result has 153 places, 0 transitions, 0 flow [2022-09-20 20:45:21,195 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=153, PETRI_TRANSITIONS=0} [2022-09-20 20:45:21,198 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 12 predicate places. [2022-09-20 20:45:21,198 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 0 transitions, 0 flow [2022-09-20 20:45:21,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.625) internal successors, (981), 8 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:21,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-09-20 20:45:21,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-09-20 20:45:21,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-09-20 20:45:21,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-09-20 20:45:21,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-09-20 20:45:21,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2022-09-20 20:45:21,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:45:21,202 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:21,204 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 20:45:21,205 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 20:45:21,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 08:45:21 BasicIcfg [2022-09-20 20:45:21,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 20:45:21,217 INFO L158 Benchmark]: Toolchain (without parser) took 5853.39ms. Allocated memory was 186.6MB in the beginning and 348.1MB in the end (delta: 161.5MB). Free memory was 154.1MB in the beginning and 199.3MB in the end (delta: -45.2MB). Peak memory consumption was 116.3MB. Max. memory is 8.0GB. [2022-09-20 20:45:21,217 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 20:45:21,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.99ms. Allocated memory was 186.6MB in the beginning and 285.2MB in the end (delta: 98.6MB). Free memory was 153.9MB in the beginning and 246.7MB in the end (delta: -92.9MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. [2022-09-20 20:45:21,217 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.60ms. Allocated memory is still 285.2MB. Free memory was 246.5MB in the beginning and 244.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 20:45:21,218 INFO L158 Benchmark]: Boogie Preprocessor took 31.57ms. Allocated memory is still 285.2MB. Free memory was 244.5MB in the beginning and 242.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 20:45:21,218 INFO L158 Benchmark]: RCFGBuilder took 425.84ms. Allocated memory is still 285.2MB. Free memory was 242.9MB in the beginning and 227.3MB in the end (delta: 15.6MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-09-20 20:45:21,218 INFO L158 Benchmark]: TraceAbstraction took 4814.59ms. Allocated memory was 285.2MB in the beginning and 348.1MB in the end (delta: 62.9MB). Free memory was 226.6MB in the beginning and 199.3MB in the end (delta: 27.3MB). Peak memory consumption was 91.9MB. Max. memory is 8.0GB. [2022-09-20 20:45:21,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 510.99ms. Allocated memory was 186.6MB in the beginning and 285.2MB in the end (delta: 98.6MB). Free memory was 153.9MB in the beginning and 246.7MB in the end (delta: -92.9MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.60ms. Allocated memory is still 285.2MB. Free memory was 246.5MB in the beginning and 244.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.57ms. Allocated memory is still 285.2MB. Free memory was 244.5MB in the beginning and 242.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 425.84ms. Allocated memory is still 285.2MB. Free memory was 242.9MB in the beginning and 227.3MB in the end (delta: 15.6MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4814.59ms. Allocated memory was 285.2MB in the beginning and 348.1MB in the end (delta: 62.9MB). Free memory was 226.6MB in the beginning and 199.3MB in the end (delta: 27.3MB). Peak memory consumption was 91.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 196 locations, 6 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: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 477 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 477 mSDsluCounter, 633 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 495 mSDsCounter, 254 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 845 IncrementalHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 254 mSolverCounterUnsat, 192 mSDtfsCounter, 845 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1547occurred in iteration=4, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 626 NumberOfCodeBlocks, 626 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 618 ConstructedInterpolants, 0 QuantifiedInterpolants, 2440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-20 20:45:21,261 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...