/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 13:32:16,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 13:32:16,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 13:32:16,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 13:32:16,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 13:32:16,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 13:32:16,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 13:32:16,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 13:32:16,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 13:32:16,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 13:32:16,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 13:32:16,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 13:32:16,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 13:32:16,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 13:32:16,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 13:32:16,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 13:32:16,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 13:32:16,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 13:32:16,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 13:32:16,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 13:32:16,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 13:32:16,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 13:32:16,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 13:32:16,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 13:32:16,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 13:32:16,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 13:32:16,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 13:32:16,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 13:32:16,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 13:32:16,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 13:32:16,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 13:32:16,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 13:32:16,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 13:32:16,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 13:32:16,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 13:32:16,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 13:32:16,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 13:32:16,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 13:32:16,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 13:32:16,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 13:32:16,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 13:32:16,573 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-After.epf [2022-01-19 13:32:16,600 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 13:32:16,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 13:32:16,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 13:32:16,601 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 13:32:16,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 13:32:16,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 13:32:16,602 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 13:32:16,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 13:32:16,602 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 13:32:16,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 13:32:16,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 13:32:16,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 13:32:16,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 13:32:16,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 13:32:16,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 13:32:16,604 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 13:32:16,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 13:32:16,604 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 13:32:16,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 13:32:16,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 13:32:16,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 13:32:16,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 13:32:16,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 13:32:16,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:32:16,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 13:32:16,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 13:32:16,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 13:32:16,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 13:32:16,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 13:32:16,606 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 13:32:16,607 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 13:32:16,607 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 13:32:16,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 13:32:16,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 13:32:16,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 13:32:16,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 13:32:16,863 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 13:32:16,864 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 13:32:16,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2022-01-19 13:32:16,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3eb2a054/d2edb6c8ac0b443abc33081af0e0d8f6/FLAG34be49bf0 [2022-01-19 13:32:17,268 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 13:32:17,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2022-01-19 13:32:17,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3eb2a054/d2edb6c8ac0b443abc33081af0e0d8f6/FLAG34be49bf0 [2022-01-19 13:32:17,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3eb2a054/d2edb6c8ac0b443abc33081af0e0d8f6 [2022-01-19 13:32:17,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 13:32:17,685 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 13:32:17,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 13:32:17,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 13:32:17,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 13:32:17,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:32:17" (1/1) ... [2022-01-19 13:32:17,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a5feee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17, skipping insertion in model container [2022-01-19 13:32:17,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:32:17" (1/1) ... [2022-01-19 13:32:17,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 13:32:17,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 13:32:17,892 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c[4210,4223] [2022-01-19 13:32:17,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:32:17,916 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 13:32:17,952 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c[4210,4223] [2022-01-19 13:32:17,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:32:17,966 INFO L208 MainTranslator]: Completed translation [2022-01-19 13:32:17,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17 WrapperNode [2022-01-19 13:32:17,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 13:32:17,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 13:32:17,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 13:32:17,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 13:32:17,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17" (1/1) ... [2022-01-19 13:32:17,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17" (1/1) ... [2022-01-19 13:32:18,001 INFO L137 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 235 [2022-01-19 13:32:18,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 13:32:18,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 13:32:18,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 13:32:18,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 13:32:18,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17" (1/1) ... [2022-01-19 13:32:18,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17" (1/1) ... [2022-01-19 13:32:18,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17" (1/1) ... [2022-01-19 13:32:18,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17" (1/1) ... [2022-01-19 13:32:18,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17" (1/1) ... [2022-01-19 13:32:18,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17" (1/1) ... [2022-01-19 13:32:18,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17" (1/1) ... [2022-01-19 13:32:18,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 13:32:18,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 13:32:18,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 13:32:18,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 13:32:18,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17" (1/1) ... [2022-01-19 13:32:18,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:32:18,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:32:18,054 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) [2022-01-19 13:32:18,085 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 [2022-01-19 13:32:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 13:32:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 13:32:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 13:32:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 13:32:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 13:32:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 13:32:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 13:32:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 13:32:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 13:32:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 13:32:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 13:32:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 13:32:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 13:32:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 13:32:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 13:32:18,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 13:32:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 13:32:18,108 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 13:32:18,215 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 13:32:18,216 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 13:32:18,485 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 13:32:18,552 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 13:32:18,552 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-19 13:32:18,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:32:18 BoogieIcfgContainer [2022-01-19 13:32:18,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 13:32:18,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 13:32:18,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 13:32:18,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 13:32:18,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:32:17" (1/3) ... [2022-01-19 13:32:18,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efa68ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:32:18, skipping insertion in model container [2022-01-19 13:32:18,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:32:17" (2/3) ... [2022-01-19 13:32:18,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efa68ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:32:18, skipping insertion in model container [2022-01-19 13:32:18,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:32:18" (3/3) ... [2022-01-19 13:32:18,562 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2022-01-19 13:32:18,566 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 13:32:18,567 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 13:32:18,567 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 13:32:18,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,616 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,616 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,616 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,616 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,617 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,617 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,617 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,617 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,617 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,618 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,618 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,618 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,622 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,622 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,622 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,622 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,622 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,623 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,623 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,630 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,630 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,630 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,630 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,631 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,631 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,632 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,632 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,632 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,633 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,633 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:32:18,643 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 13:32:18,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 13:32:18,704 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 13:32:18,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 13:32:18,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 189 places, 186 transitions, 396 flow [2022-01-19 13:32:18,777 INFO L129 PetriNetUnfolder]: 7/183 cut-off events. [2022-01-19 13:32:18,777 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 13:32:18,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 7/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2022-01-19 13:32:18,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 186 transitions, 396 flow [2022-01-19 13:32:18,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 172 transitions, 362 flow [2022-01-19 13:32:18,818 INFO L129 PetriNetUnfolder]: 7/171 cut-off events. [2022-01-19 13:32:18,818 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 13:32:18,818 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:32:18,819 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:32:18,819 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:32:18,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:32:18,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1585459092, now seen corresponding path program 1 times [2022-01-19 13:32:18,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:32:18,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117003319] [2022-01-19 13:32:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:32:18,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:32:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:32:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:32:19,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:32:19,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117003319] [2022-01-19 13:32:19,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117003319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:32:19,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:32:19,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 13:32:19,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897225238] [2022-01-19 13:32:19,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:32:19,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 13:32:19,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:32:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 13:32:19,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 13:32:19,138 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 186 [2022-01-19 13:32:19,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 362 flow. Second operand has 2 states, 2 states have (on average 171.0) internal successors, (342), 2 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:19,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:32:19,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 186 [2022-01-19 13:32:19,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:32:19,335 INFO L129 PetriNetUnfolder]: 215/670 cut-off events. [2022-01-19 13:32:19,335 INFO L130 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2022-01-19 13:32:19,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 670 events. 215/670 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3318 event pairs, 214 based on Foata normal form. 6/665 useless extension candidates. Maximal degree in co-relation 942. Up to 370 conditions per place. [2022-01-19 13:32:19,345 INFO L132 encePairwiseOnDemand]: 180/186 looper letters, 17 selfloop transitions, 0 changer transitions 5/166 dead transitions. [2022-01-19 13:32:19,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 166 transitions, 384 flow [2022-01-19 13:32:19,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 13:32:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 13:32:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 347 transitions. [2022-01-19 13:32:19,363 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9327956989247311 [2022-01-19 13:32:19,363 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 347 transitions. [2022-01-19 13:32:19,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 347 transitions. [2022-01-19 13:32:19,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:32:19,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 347 transitions. [2022-01-19 13:32:19,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:19,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:19,378 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:19,380 INFO L186 Difference]: Start difference. First operand has 175 places, 172 transitions, 362 flow. Second operand 2 states and 347 transitions. [2022-01-19 13:32:19,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 166 transitions, 384 flow [2022-01-19 13:32:19,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 166 transitions, 372 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 13:32:19,391 INFO L242 Difference]: Finished difference. Result has 170 places, 161 transitions, 328 flow [2022-01-19 13:32:19,393 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2022-01-19 13:32:19,397 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, -5 predicate places. [2022-01-19 13:32:19,397 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 328 flow [2022-01-19 13:32:19,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 171.0) internal successors, (342), 2 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:19,398 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:32:19,399 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:32:19,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 13:32:19,399 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:32:19,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:32:19,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1309777273, now seen corresponding path program 1 times [2022-01-19 13:32:19,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:32:19,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951343758] [2022-01-19 13:32:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:32:19,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:32:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:32:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:32:19,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:32:19,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951343758] [2022-01-19 13:32:19,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951343758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:32:19,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:32:19,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:32:19,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819175828] [2022-01-19 13:32:19,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:32:19,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:32:19,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:32:19,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:32:19,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:32:19,682 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 186 [2022-01-19 13:32:19,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 328 flow. Second operand has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:19,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:32:19,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 186 [2022-01-19 13:32:19,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:32:19,934 INFO L129 PetriNetUnfolder]: 275/841 cut-off events. [2022-01-19 13:32:19,935 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-01-19 13:32:19,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 841 events. 275/841 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4309 event pairs, 274 based on Foata normal form. 41/873 useless extension candidates. Maximal degree in co-relation 1400. Up to 382 conditions per place. [2022-01-19 13:32:19,941 INFO L132 encePairwiseOnDemand]: 176/186 looper letters, 34 selfloop transitions, 6 changer transitions 13/178 dead transitions. [2022-01-19 13:32:19,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 178 transitions, 471 flow [2022-01-19 13:32:19,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:32:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:32:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1057 transitions. [2022-01-19 13:32:19,946 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8118279569892473 [2022-01-19 13:32:19,946 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1057 transitions. [2022-01-19 13:32:19,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1057 transitions. [2022-01-19 13:32:19,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:32:19,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1057 transitions. [2022-01-19 13:32:19,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:19,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:19,954 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:19,954 INFO L186 Difference]: Start difference. First operand has 170 places, 161 transitions, 328 flow. Second operand 7 states and 1057 transitions. [2022-01-19 13:32:19,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 178 transitions, 471 flow [2022-01-19 13:32:19,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 178 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 13:32:19,961 INFO L242 Difference]: Finished difference. Result has 173 places, 162 transitions, 354 flow [2022-01-19 13:32:19,961 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=173, PETRI_TRANSITIONS=162} [2022-01-19 13:32:19,962 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, -2 predicate places. [2022-01-19 13:32:19,963 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 162 transitions, 354 flow [2022-01-19 13:32:19,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:19,963 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:32:19,964 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:32:19,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 13:32:19,964 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:32:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:32:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash 710443097, now seen corresponding path program 1 times [2022-01-19 13:32:19,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:32:19,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713687127] [2022-01-19 13:32:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:32:19,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:32:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:32:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:32:20,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:32:20,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713687127] [2022-01-19 13:32:20,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713687127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:32:20,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:32:20,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:32:20,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800660862] [2022-01-19 13:32:20,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:32:20,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:32:20,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:32:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:32:20,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:32:20,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 186 [2022-01-19 13:32:20,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 162 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:20,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:32:20,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 186 [2022-01-19 13:32:20,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:32:20,609 INFO L129 PetriNetUnfolder]: 1031/2322 cut-off events. [2022-01-19 13:32:20,609 INFO L130 PetriNetUnfolder]: For 213/213 co-relation queries the response was YES. [2022-01-19 13:32:20,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 2322 events. 1031/2322 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15973 event pairs, 364 based on Foata normal form. 25/2314 useless extension candidates. Maximal degree in co-relation 4489. Up to 511 conditions per place. [2022-01-19 13:32:20,625 INFO L132 encePairwiseOnDemand]: 176/186 looper letters, 91 selfloop transitions, 18 changer transitions 0/240 dead transitions. [2022-01-19 13:32:20,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 240 transitions, 768 flow [2022-01-19 13:32:20,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 13:32:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 13:32:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1442 transitions. [2022-01-19 13:32:20,630 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8614097968936678 [2022-01-19 13:32:20,633 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1442 transitions. [2022-01-19 13:32:20,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1442 transitions. [2022-01-19 13:32:20,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:32:20,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1442 transitions. [2022-01-19 13:32:20,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 160.22222222222223) internal successors, (1442), 9 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:20,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:20,642 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:20,642 INFO L186 Difference]: Start difference. First operand has 173 places, 162 transitions, 354 flow. Second operand 9 states and 1442 transitions. [2022-01-19 13:32:20,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 240 transitions, 768 flow [2022-01-19 13:32:20,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 240 transitions, 758 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 13:32:20,650 INFO L242 Difference]: Finished difference. Result has 181 places, 176 transitions, 448 flow [2022-01-19 13:32:20,650 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=448, PETRI_PLACES=181, PETRI_TRANSITIONS=176} [2022-01-19 13:32:20,652 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 6 predicate places. [2022-01-19 13:32:20,652 INFO L470 AbstractCegarLoop]: Abstraction has has 181 places, 176 transitions, 448 flow [2022-01-19 13:32:20,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:20,653 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:32:20,653 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:32:20,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 13:32:20,653 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:32:20,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:32:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash 446910751, now seen corresponding path program 2 times [2022-01-19 13:32:20,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:32:20,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991417772] [2022-01-19 13:32:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:32:20,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:32:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:32:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:32:21,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:32:21,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991417772] [2022-01-19 13:32:21,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991417772] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:32:21,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074382256] [2022-01-19 13:32:21,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 13:32:21,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:32:21,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:32:21,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:32:21,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 13:32:21,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 13:32:21,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:32:21,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-19 13:32:21,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:32:22,376 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 13:32:22,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-01-19 13:32:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:32:22,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 13:32:22,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074382256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:32:22,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 13:32:22,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [25] total 33 [2022-01-19 13:32:22,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210532633] [2022-01-19 13:32:22,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:32:22,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 13:32:22,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:32:22,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 13:32:22,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2022-01-19 13:32:22,423 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 186 [2022-01-19 13:32:22,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 176 transitions, 448 flow. Second operand has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:22,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:32:22,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 186 [2022-01-19 13:32:22,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:32:23,467 INFO L129 PetriNetUnfolder]: 2890/6198 cut-off events. [2022-01-19 13:32:23,468 INFO L130 PetriNetUnfolder]: For 948/966 co-relation queries the response was YES. [2022-01-19 13:32:23,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12483 conditions, 6198 events. 2890/6198 cut-off events. For 948/966 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 51657 event pairs, 398 based on Foata normal form. 5/6068 useless extension candidates. Maximal degree in co-relation 12472. Up to 2776 conditions per place. [2022-01-19 13:32:23,511 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 103 selfloop transitions, 47 changer transitions 4/272 dead transitions. [2022-01-19 13:32:23,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 272 transitions, 996 flow [2022-01-19 13:32:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 13:32:23,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 13:32:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1895 transitions. [2022-01-19 13:32:23,516 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6792114695340502 [2022-01-19 13:32:23,516 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1895 transitions. [2022-01-19 13:32:23,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1895 transitions. [2022-01-19 13:32:23,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:32:23,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1895 transitions. [2022-01-19 13:32:23,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.33333333333333) internal successors, (1895), 15 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:23,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 186.0) internal successors, (2976), 16 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:23,525 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 186.0) internal successors, (2976), 16 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:23,525 INFO L186 Difference]: Start difference. First operand has 181 places, 176 transitions, 448 flow. Second operand 15 states and 1895 transitions. [2022-01-19 13:32:23,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 272 transitions, 996 flow [2022-01-19 13:32:23,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 272 transitions, 996 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 13:32:23,538 INFO L242 Difference]: Finished difference. Result has 202 places, 221 transitions, 778 flow [2022-01-19 13:32:23,538 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=778, PETRI_PLACES=202, PETRI_TRANSITIONS=221} [2022-01-19 13:32:23,539 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 27 predicate places. [2022-01-19 13:32:23,539 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 221 transitions, 778 flow [2022-01-19 13:32:23,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:23,540 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:32:23,540 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:32:23,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 13:32:23,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:32:23,764 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:32:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:32:23,765 INFO L85 PathProgramCache]: Analyzing trace with hash 795173689, now seen corresponding path program 3 times [2022-01-19 13:32:23,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:32:23,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473116007] [2022-01-19 13:32:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:32:23,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:32:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:32:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:32:23,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:32:23,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473116007] [2022-01-19 13:32:23,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473116007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:32:23,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:32:23,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:32:23,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630052165] [2022-01-19 13:32:23,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:32:23,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:32:23,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:32:23,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:32:23,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:32:23,922 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 186 [2022-01-19 13:32:23,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 221 transitions, 778 flow. Second operand has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:23,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:32:23,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 186 [2022-01-19 13:32:23,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:32:24,793 INFO L129 PetriNetUnfolder]: 2499/5476 cut-off events. [2022-01-19 13:32:24,793 INFO L130 PetriNetUnfolder]: For 7497/7884 co-relation queries the response was YES. [2022-01-19 13:32:24,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17081 conditions, 5476 events. 2499/5476 cut-off events. For 7497/7884 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 44395 event pairs, 602 based on Foata normal form. 112/5390 useless extension candidates. Maximal degree in co-relation 17062. Up to 1650 conditions per place. [2022-01-19 13:32:24,843 INFO L132 encePairwiseOnDemand]: 176/186 looper letters, 186 selfloop transitions, 24 changer transitions 0/354 dead transitions. [2022-01-19 13:32:24,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 354 transitions, 1884 flow [2022-01-19 13:32:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 13:32:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 13:32:24,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1439 transitions. [2022-01-19 13:32:24,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8596176821983273 [2022-01-19 13:32:24,847 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1439 transitions. [2022-01-19 13:32:24,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1439 transitions. [2022-01-19 13:32:24,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:32:24,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1439 transitions. [2022-01-19 13:32:24,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.88888888888889) internal successors, (1439), 9 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:24,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:24,853 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:24,853 INFO L186 Difference]: Start difference. First operand has 202 places, 221 transitions, 778 flow. Second operand 9 states and 1439 transitions. [2022-01-19 13:32:24,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 354 transitions, 1884 flow [2022-01-19 13:32:24,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 354 transitions, 1858 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-01-19 13:32:24,877 INFO L242 Difference]: Finished difference. Result has 205 places, 227 transitions, 873 flow [2022-01-19 13:32:24,877 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=873, PETRI_PLACES=205, PETRI_TRANSITIONS=227} [2022-01-19 13:32:24,879 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 30 predicate places. [2022-01-19 13:32:24,879 INFO L470 AbstractCegarLoop]: Abstraction has has 205 places, 227 transitions, 873 flow [2022-01-19 13:32:24,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:24,881 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:32:24,881 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:32:24,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 13:32:24,881 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:32:24,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:32:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash 250132429, now seen corresponding path program 4 times [2022-01-19 13:32:24,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:32:24,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648683004] [2022-01-19 13:32:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:32:24,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:32:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:32:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:32:24,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:32:24,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648683004] [2022-01-19 13:32:24,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648683004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:32:24,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:32:24,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:32:24,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971321384] [2022-01-19 13:32:24,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:32:24,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:32:24,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:32:24,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:32:24,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:32:24,973 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 186 [2022-01-19 13:32:24,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 227 transitions, 873 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:24,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:32:24,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 186 [2022-01-19 13:32:24,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:32:25,659 INFO L129 PetriNetUnfolder]: 1872/4606 cut-off events. [2022-01-19 13:32:25,659 INFO L130 PetriNetUnfolder]: For 6280/6753 co-relation queries the response was YES. [2022-01-19 13:32:25,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14241 conditions, 4606 events. 1872/4606 cut-off events. For 6280/6753 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 38766 event pairs, 815 based on Foata normal form. 35/4439 useless extension candidates. Maximal degree in co-relation 14220. Up to 2459 conditions per place. [2022-01-19 13:32:25,702 INFO L132 encePairwiseOnDemand]: 183/186 looper letters, 73 selfloop transitions, 2 changer transitions 0/249 dead transitions. [2022-01-19 13:32:25,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 249 transitions, 1145 flow [2022-01-19 13:32:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:32:25,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:32:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-01-19 13:32:25,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9032258064516129 [2022-01-19 13:32:25,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-01-19 13:32:25,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-01-19 13:32:25,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:32:25,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-01-19 13:32:25,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:25,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:25,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:25,708 INFO L186 Difference]: Start difference. First operand has 205 places, 227 transitions, 873 flow. Second operand 3 states and 504 transitions. [2022-01-19 13:32:25,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 249 transitions, 1145 flow [2022-01-19 13:32:25,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 249 transitions, 1109 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-01-19 13:32:25,739 INFO L242 Difference]: Finished difference. Result has 204 places, 227 transitions, 845 flow [2022-01-19 13:32:25,740 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=845, PETRI_PLACES=204, PETRI_TRANSITIONS=227} [2022-01-19 13:32:25,742 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 29 predicate places. [2022-01-19 13:32:25,742 INFO L470 AbstractCegarLoop]: Abstraction has has 204 places, 227 transitions, 845 flow [2022-01-19 13:32:25,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:25,743 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:32:25,743 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:32:25,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 13:32:25,746 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:32:25,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:32:25,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2092178769, now seen corresponding path program 5 times [2022-01-19 13:32:25,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:32:25,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521751180] [2022-01-19 13:32:25,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:32:25,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:32:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:32:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:32:26,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:32:26,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521751180] [2022-01-19 13:32:26,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521751180] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:32:26,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390711421] [2022-01-19 13:32:26,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 13:32:26,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:32:26,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:32:26,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:32:26,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 13:32:26,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 13:32:26,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:32:26,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-19 13:32:26,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:32:28,378 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-19 13:32:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:32:28,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:32:28,744 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 13:32:28,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2022-01-19 13:32:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:32:30,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390711421] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 13:32:30,003 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 13:32:30,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 23] total 64 [2022-01-19 13:32:30,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202072131] [2022-01-19 13:32:30,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 13:32:30,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-19 13:32:30,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:32:30,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-19 13:32:30,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=542, Invalid=3490, Unknown=0, NotChecked=0, Total=4032 [2022-01-19 13:32:30,015 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 186 [2022-01-19 13:32:30,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 227 transitions, 845 flow. Second operand has 64 states, 64 states have (on average 101.828125) internal successors, (6517), 64 states have internal predecessors, (6517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:30,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:32:30,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 186 [2022-01-19 13:32:30,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:32:35,478 INFO L129 PetriNetUnfolder]: 6150/12750 cut-off events. [2022-01-19 13:32:35,479 INFO L130 PetriNetUnfolder]: For 19029/19934 co-relation queries the response was YES. [2022-01-19 13:32:35,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42560 conditions, 12750 events. 6150/12750 cut-off events. For 19029/19934 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 115257 event pairs, 702 based on Foata normal form. 99/12647 useless extension candidates. Maximal degree in co-relation 42540. Up to 4292 conditions per place. [2022-01-19 13:32:35,583 INFO L132 encePairwiseOnDemand]: 134/186 looper letters, 337 selfloop transitions, 155 changer transitions 41/639 dead transitions. [2022-01-19 13:32:35,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 639 transitions, 4198 flow [2022-01-19 13:32:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-19 13:32:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-01-19 13:32:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 6623 transitions. [2022-01-19 13:32:35,599 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5651988393923878 [2022-01-19 13:32:35,599 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 6623 transitions. [2022-01-19 13:32:35,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 6623 transitions. [2022-01-19 13:32:35,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:32:35,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 6623 transitions. [2022-01-19 13:32:35,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 105.12698412698413) internal successors, (6623), 63 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:35,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 186.0) internal successors, (11904), 64 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:35,637 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 186.0) internal successors, (11904), 64 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:35,637 INFO L186 Difference]: Start difference. First operand has 204 places, 227 transitions, 845 flow. Second operand 63 states and 6623 transitions. [2022-01-19 13:32:35,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 639 transitions, 4198 flow [2022-01-19 13:32:35,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 639 transitions, 4194 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:32:35,704 INFO L242 Difference]: Finished difference. Result has 300 places, 383 transitions, 2373 flow [2022-01-19 13:32:35,704 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=2373, PETRI_PLACES=300, PETRI_TRANSITIONS=383} [2022-01-19 13:32:35,704 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 125 predicate places. [2022-01-19 13:32:35,705 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 383 transitions, 2373 flow [2022-01-19 13:32:35,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 101.828125) internal successors, (6517), 64 states have internal predecessors, (6517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:35,718 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:32:35,718 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:32:35,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 13:32:35,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-19 13:32:35,932 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:32:35,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:32:35,932 INFO L85 PathProgramCache]: Analyzing trace with hash -886467297, now seen corresponding path program 6 times [2022-01-19 13:32:35,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:32:35,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421936821] [2022-01-19 13:32:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:32:35,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:32:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:32:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:32:36,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:32:36,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421936821] [2022-01-19 13:32:36,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421936821] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:32:36,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683110650] [2022-01-19 13:32:36,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 13:32:36,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:32:36,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:32:36,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:32:36,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 13:32:36,384 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-01-19 13:32:36,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:32:36,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-19 13:32:36,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:32:36,795 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 13:32:36,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-01-19 13:32:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:32:36,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 13:32:36,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683110650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:32:36,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 13:32:36,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21] total 28 [2022-01-19 13:32:36,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796629321] [2022-01-19 13:32:36,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:32:36,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 13:32:36,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:32:36,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 13:32:36,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 13:32:36,835 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 186 [2022-01-19 13:32:36,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 383 transitions, 2373 flow. Second operand has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:36,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:32:36,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 186 [2022-01-19 13:32:36,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:32:39,421 INFO L129 PetriNetUnfolder]: 6972/14542 cut-off events. [2022-01-19 13:32:39,421 INFO L130 PetriNetUnfolder]: For 60447/62929 co-relation queries the response was YES. [2022-01-19 13:32:39,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67347 conditions, 14542 events. 6972/14542 cut-off events. For 60447/62929 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 134953 event pairs, 825 based on Foata normal form. 360/14635 useless extension candidates. Maximal degree in co-relation 67291. Up to 6383 conditions per place. [2022-01-19 13:32:39,592 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 282 selfloop transitions, 130 changer transitions 9/554 dead transitions. [2022-01-19 13:32:39,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 554 transitions, 4781 flow [2022-01-19 13:32:39,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:32:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:32:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2016 transitions. [2022-01-19 13:32:39,596 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2022-01-19 13:32:39,596 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2016 transitions. [2022-01-19 13:32:39,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2016 transitions. [2022-01-19 13:32:39,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:32:39,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2016 transitions. [2022-01-19 13:32:39,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.0) internal successors, (2016), 16 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:39,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 186.0) internal successors, (3162), 17 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:39,603 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 186.0) internal successors, (3162), 17 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:39,603 INFO L186 Difference]: Start difference. First operand has 300 places, 383 transitions, 2373 flow. Second operand 16 states and 2016 transitions. [2022-01-19 13:32:39,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 554 transitions, 4781 flow [2022-01-19 13:32:39,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 554 transitions, 4575 flow, removed 89 selfloop flow, removed 20 redundant places. [2022-01-19 13:32:39,910 INFO L242 Difference]: Finished difference. Result has 295 places, 446 transitions, 3263 flow [2022-01-19 13:32:39,911 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3263, PETRI_PLACES=295, PETRI_TRANSITIONS=446} [2022-01-19 13:32:39,911 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 120 predicate places. [2022-01-19 13:32:39,911 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 446 transitions, 3263 flow [2022-01-19 13:32:39,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:39,912 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:32:39,912 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:32:39,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-19 13:32:40,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:32:40,128 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:32:40,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:32:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2144886995, now seen corresponding path program 7 times [2022-01-19 13:32:40,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:32:40,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737895031] [2022-01-19 13:32:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:32:40,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:32:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:32:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:32:40,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:32:40,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737895031] [2022-01-19 13:32:40,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737895031] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:32:40,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436257745] [2022-01-19 13:32:40,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 13:32:40,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:32:40,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:32:40,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:32:40,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 13:32:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:32:40,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 46 conjunts are in the unsatisfiable core [2022-01-19 13:32:40,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:32:42,080 INFO L353 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-01-19 13:32:42,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2022-01-19 13:32:42,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:32:42,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:32:42,576 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 13:32:42,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2022-01-19 13:32:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:32:43,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436257745] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 13:32:43,425 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 13:32:43,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 19] total 53 [2022-01-19 13:32:43,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965323605] [2022-01-19 13:32:43,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 13:32:43,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-19 13:32:43,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:32:43,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-19 13:32:43,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=2351, Unknown=0, NotChecked=0, Total=2756 [2022-01-19 13:32:43,434 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 186 [2022-01-19 13:32:43,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 446 transitions, 3263 flow. Second operand has 53 states, 53 states have (on average 102.16981132075472) internal successors, (5415), 53 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:43,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:32:43,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 186 [2022-01-19 13:32:43,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:32:51,620 INFO L129 PetriNetUnfolder]: 12558/27648 cut-off events. [2022-01-19 13:32:51,621 INFO L130 PetriNetUnfolder]: For 166717/169207 co-relation queries the response was YES. [2022-01-19 13:32:51,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143315 conditions, 27648 events. 12558/27648 cut-off events. For 166717/169207 co-relation queries the response was YES. Maximal size of possible extension queue 1631. Compared 299147 event pairs, 834 based on Foata normal form. 460/27761 useless extension candidates. Maximal degree in co-relation 143258. Up to 8897 conditions per place. [2022-01-19 13:32:52,104 INFO L132 encePairwiseOnDemand]: 138/186 looper letters, 789 selfloop transitions, 535 changer transitions 45/1475 dead transitions. [2022-01-19 13:32:52,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1475 transitions, 16394 flow [2022-01-19 13:32:52,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-19 13:32:52,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-01-19 13:32:52,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 7915 transitions. [2022-01-19 13:32:52,119 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5750508573089218 [2022-01-19 13:32:52,120 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 7915 transitions. [2022-01-19 13:32:52,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 7915 transitions. [2022-01-19 13:32:52,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:32:52,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 7915 transitions. [2022-01-19 13:32:52,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 106.95945945945945) internal successors, (7915), 74 states have internal predecessors, (7915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:52,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 186.0) internal successors, (13950), 75 states have internal predecessors, (13950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:52,154 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 186.0) internal successors, (13950), 75 states have internal predecessors, (13950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:52,154 INFO L186 Difference]: Start difference. First operand has 295 places, 446 transitions, 3263 flow. Second operand 74 states and 7915 transitions. [2022-01-19 13:32:52,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 1475 transitions, 16394 flow [2022-01-19 13:32:52,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 1475 transitions, 16074 flow, removed 145 selfloop flow, removed 7 redundant places. [2022-01-19 13:32:52,844 INFO L242 Difference]: Finished difference. Result has 399 places, 945 transitions, 10409 flow [2022-01-19 13:32:52,844 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=3139, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=10409, PETRI_PLACES=399, PETRI_TRANSITIONS=945} [2022-01-19 13:32:52,845 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 224 predicate places. [2022-01-19 13:32:52,845 INFO L470 AbstractCegarLoop]: Abstraction has has 399 places, 945 transitions, 10409 flow [2022-01-19 13:32:52,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 102.16981132075472) internal successors, (5415), 53 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:52,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:32:52,846 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:32:52,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 13:32:53,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:32:53,059 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:32:53,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:32:53,060 INFO L85 PathProgramCache]: Analyzing trace with hash 872739589, now seen corresponding path program 8 times [2022-01-19 13:32:53,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:32:53,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862294652] [2022-01-19 13:32:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:32:53,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:32:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:32:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:32:53,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:32:53,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862294652] [2022-01-19 13:32:53,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862294652] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:32:53,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106409924] [2022-01-19 13:32:53,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 13:32:53,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:32:53,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:32:53,641 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:32:53,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 13:32:53,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 13:32:53,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:32:53,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-19 13:32:53,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:32:53,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 13:32:53,796 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 13:32:53,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 13:32:54,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-19 13:32:54,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 13:32:54,389 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 13:32:54,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-01-19 13:32:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:32:54,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 13:32:54,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106409924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:32:54,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 13:32:54,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [26] total 37 [2022-01-19 13:32:54,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040461571] [2022-01-19 13:32:54,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:32:54,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-19 13:32:54,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:32:54,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-19 13:32:54,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2022-01-19 13:32:54,423 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 186 [2022-01-19 13:32:54,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 945 transitions, 10409 flow. Second operand has 15 states, 15 states have (on average 107.4) internal successors, (1611), 15 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:32:54,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:32:54,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 186 [2022-01-19 13:32:54,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:33:02,722 INFO L129 PetriNetUnfolder]: 13537/30386 cut-off events. [2022-01-19 13:33:02,722 INFO L130 PetriNetUnfolder]: For 474923/479675 co-relation queries the response was YES. [2022-01-19 13:33:03,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210759 conditions, 30386 events. 13537/30386 cut-off events. For 474923/479675 co-relation queries the response was YES. Maximal size of possible extension queue 1755. Compared 337927 event pairs, 1385 based on Foata normal form. 802/30716 useless extension candidates. Maximal degree in co-relation 210663. Up to 17131 conditions per place. [2022-01-19 13:33:03,270 INFO L132 encePairwiseOnDemand]: 158/186 looper letters, 855 selfloop transitions, 224 changer transitions 34/1238 dead transitions. [2022-01-19 13:33:03,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1238 transitions, 17043 flow [2022-01-19 13:33:03,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 13:33:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 13:33:03,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2785 transitions. [2022-01-19 13:33:03,275 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5989247311827957 [2022-01-19 13:33:03,275 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2785 transitions. [2022-01-19 13:33:03,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2785 transitions. [2022-01-19 13:33:03,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:33:03,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2785 transitions. [2022-01-19 13:33:03,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 111.4) internal successors, (2785), 25 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:33:03,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:33:03,284 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:33:03,284 INFO L186 Difference]: Start difference. First operand has 399 places, 945 transitions, 10409 flow. Second operand 25 states and 2785 transitions. [2022-01-19 13:33:03,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1238 transitions, 17043 flow [2022-01-19 13:33:06,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 1238 transitions, 16362 flow, removed 317 selfloop flow, removed 27 redundant places. [2022-01-19 13:33:06,953 INFO L242 Difference]: Finished difference. Result has 405 places, 1030 transitions, 11853 flow [2022-01-19 13:33:06,953 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=9834, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11853, PETRI_PLACES=405, PETRI_TRANSITIONS=1030} [2022-01-19 13:33:06,954 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 230 predicate places. [2022-01-19 13:33:06,954 INFO L470 AbstractCegarLoop]: Abstraction has has 405 places, 1030 transitions, 11853 flow [2022-01-19 13:33:06,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.4) internal successors, (1611), 15 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:33:06,954 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:33:06,955 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:33:06,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 13:33:07,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-19 13:33:07,156 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:33:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:33:07,156 INFO L85 PathProgramCache]: Analyzing trace with hash 422036635, now seen corresponding path program 9 times [2022-01-19 13:33:07,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:33:07,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737237211] [2022-01-19 13:33:07,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:33:07,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:33:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:33:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:33:07,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:33:07,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737237211] [2022-01-19 13:33:07,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737237211] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:33:07,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716782132] [2022-01-19 13:33:07,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 13:33:07,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:33:07,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:33:07,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:33:07,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 13:33:07,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-19 13:33:07,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:33:07,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 13:33:07,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:33:08,381 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 13:33:08,382 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-01-19 13:33:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:33:08,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 13:33:08,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716782132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:33:08,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 13:33:08,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [26] total 34 [2022-01-19 13:33:08,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235293870] [2022-01-19 13:33:08,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:33:08,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 13:33:08,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:33:08,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 13:33:08,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 13:33:08,419 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 186 [2022-01-19 13:33:08,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 1030 transitions, 11853 flow. Second operand has 13 states, 13 states have (on average 115.84615384615384) internal successors, (1506), 13 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:33:08,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:33:08,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 186 [2022-01-19 13:33:08,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:33:20,179 INFO L129 PetriNetUnfolder]: 20072/40911 cut-off events. [2022-01-19 13:33:20,179 INFO L130 PetriNetUnfolder]: For 735583/739467 co-relation queries the response was YES. [2022-01-19 13:33:20,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297411 conditions, 40911 events. 20072/40911 cut-off events. For 735583/739467 co-relation queries the response was YES. Maximal size of possible extension queue 2145. Compared 433888 event pairs, 2600 based on Foata normal form. 1033/41674 useless extension candidates. Maximal degree in co-relation 297305. Up to 28177 conditions per place. [2022-01-19 13:33:21,068 INFO L132 encePairwiseOnDemand]: 157/186 looper letters, 947 selfloop transitions, 288 changer transitions 18/1371 dead transitions. [2022-01-19 13:33:21,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1371 transitions, 19780 flow [2022-01-19 13:33:21,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:33:21,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:33:21,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2526 transitions. [2022-01-19 13:33:21,072 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6466973886328725 [2022-01-19 13:33:21,072 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2526 transitions. [2022-01-19 13:33:21,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2526 transitions. [2022-01-19 13:33:21,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:33:21,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2526 transitions. [2022-01-19 13:33:21,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 120.28571428571429) internal successors, (2526), 21 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:33:21,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:33:21,081 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:33:21,081 INFO L186 Difference]: Start difference. First operand has 405 places, 1030 transitions, 11853 flow. Second operand 21 states and 2526 transitions. [2022-01-19 13:33:21,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1371 transitions, 19780 flow [2022-01-19 13:33:29,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 1371 transitions, 18906 flow, removed 361 selfloop flow, removed 12 redundant places. [2022-01-19 13:33:29,282 INFO L242 Difference]: Finished difference. Result has 422 places, 1249 transitions, 15951 flow [2022-01-19 13:33:29,283 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=11262, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=828, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=15951, PETRI_PLACES=422, PETRI_TRANSITIONS=1249} [2022-01-19 13:33:29,284 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 247 predicate places. [2022-01-19 13:33:29,284 INFO L470 AbstractCegarLoop]: Abstraction has has 422 places, 1249 transitions, 15951 flow [2022-01-19 13:33:29,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 115.84615384615384) internal successors, (1506), 13 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:33:29,284 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:33:29,284 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:33:29,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 13:33:29,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:33:29,497 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:33:29,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:33:29,497 INFO L85 PathProgramCache]: Analyzing trace with hash -943930637, now seen corresponding path program 10 times [2022-01-19 13:33:29,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:33:29,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54370169] [2022-01-19 13:33:29,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:33:29,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:33:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:33:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:33:30,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:33:30,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54370169] [2022-01-19 13:33:30,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54370169] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:33:30,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630618659] [2022-01-19 13:33:30,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 13:33:30,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:33:30,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:33:30,230 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:33:30,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 13:33:30,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 13:33:30,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:33:30,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-19 13:33:30,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:33:30,808 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 13:33:31,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 13:33:31,689 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 13:33:31,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 13:33:32,117 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-01-19 13:33:32,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 20 [2022-01-19 13:33:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:33:32,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:33:36,250 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 13:33:36,250 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 130 [2022-01-19 13:33:36,272 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 13:33:36,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 5816 treesize of output 5452 [2022-01-19 13:33:36,365 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 13:33:36,366 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 6440 treesize of output 4738 [2022-01-19 13:33:36,463 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 13:33:36,464 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 3820 treesize of output 2982 [2022-01-19 13:33:36,553 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 13:33:36,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 3848 treesize of output 3442 [2022-01-19 13:33:36,611 INFO L884 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... [2022-01-19 13:46:12,765 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-19 13:46:12,767 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 13:46:12,768 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 13:46:12,768 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 13:46:12,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-19 13:46:12,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:46:12,968 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 162 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 53ms.. [2022-01-19 13:46:12,969 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 13:46:12,969 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 13:46:12,969 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 13:46:12,972 INFO L732 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2022-01-19 13:46:12,973 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 13:46:12,973 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 13:46:12,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:46:12 BasicIcfg [2022-01-19 13:46:12,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 13:46:12,976 INFO L158 Benchmark]: Toolchain (without parser) took 835290.33ms. Allocated memory was 364.9MB in the beginning and 11.7GB in the end (delta: 11.3GB). Free memory was 310.5MB in the beginning and 2.9GB in the end (delta: -2.5GB). Peak memory consumption was 9.4GB. Max. memory is 16.0GB. [2022-01-19 13:46:12,976 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 326.8MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 13:46:12,976 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.40ms. Allocated memory was 364.9MB in the beginning and 467.7MB in the end (delta: 102.8MB). Free memory was 310.3MB in the beginning and 438.9MB in the end (delta: -128.6MB). Peak memory consumption was 7.0MB. Max. memory is 16.0GB. [2022-01-19 13:46:12,976 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.27ms. Allocated memory is still 467.7MB. Free memory was 438.9MB in the beginning and 436.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:46:12,977 INFO L158 Benchmark]: Boogie Preprocessor took 24.07ms. Allocated memory is still 467.7MB. Free memory was 436.8MB in the beginning and 434.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:46:12,977 INFO L158 Benchmark]: RCFGBuilder took 527.09ms. Allocated memory is still 467.7MB. Free memory was 434.7MB in the beginning and 409.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2022-01-19 13:46:12,977 INFO L158 Benchmark]: TraceAbstraction took 834419.80ms. Allocated memory was 467.7MB in the beginning and 11.7GB in the end (delta: 11.2GB). Free memory was 409.6MB in the beginning and 2.9GB in the end (delta: -2.4GB). Peak memory consumption was 9.4GB. Max. memory is 16.0GB. [2022-01-19 13:46:12,978 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 326.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 280.40ms. Allocated memory was 364.9MB in the beginning and 467.7MB in the end (delta: 102.8MB). Free memory was 310.3MB in the beginning and 438.9MB in the end (delta: -128.6MB). Peak memory consumption was 7.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.27ms. Allocated memory is still 467.7MB. Free memory was 438.9MB in the beginning and 436.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.07ms. Allocated memory is still 467.7MB. Free memory was 436.8MB in the beginning and 434.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 527.09ms. Allocated memory is still 467.7MB. Free memory was 434.7MB in the beginning and 409.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 834419.80ms. Allocated memory was 467.7MB in the beginning and 11.7GB in the end (delta: 11.2GB). Free memory was 409.6MB in the beginning and 2.9GB in the end (delta: -2.4GB). Peak memory consumption was 9.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 162 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 53ms.. - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 162 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 53ms.. - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 162 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 53ms.. - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 162 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 53ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 215 locations, 4 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: 834.3s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 55.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3534 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3534 mSDsluCounter, 3254 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2743 IncrementalHoareTripleChecker+Unchecked, 6662 mSDsCounter, 406 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7981 IncrementalHoareTripleChecker+Invalid, 11130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 406 mSolverCounterUnsat, 312 mSDtfsCounter, 7981 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1666 GetRequests, 1211 SyntacticMatches, 29 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 9607 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15951occurred in iteration=11, InterpolantAutomatonStates: 244, 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: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 2723 NumberOfCodeBlocks, 2695 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3026 ConstructedInterpolants, 55 QuantifiedInterpolants, 19464 SizeOfPredicates, 120 NumberOfNonLiveVariables, 2246 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 7/17 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown