/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-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 08:28:38,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 08:28:38,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 08:28:38,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 08:28:38,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 08:28:38,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 08:28:38,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 08:28:38,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 08:28:38,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 08:28:38,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 08:28:38,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 08:28:38,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 08:28:38,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 08:28:38,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 08:28:38,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 08:28:38,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 08:28:38,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 08:28:38,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 08:28:38,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 08:28:38,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 08:28:38,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 08:28:38,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 08:28:38,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 08:28:38,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 08:28:38,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 08:28:38,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 08:28:38,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 08:28:38,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 08:28:38,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 08:28:38,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 08:28:38,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 08:28:38,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 08:28:38,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 08:28:38,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 08:28:38,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 08:28:38,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 08:28:38,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 08:28:38,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 08:28:38,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 08:28:38,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 08:28:38,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 08:28:38,733 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-Before.epf [2022-01-19 08:28:38,758 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 08:28:38,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 08:28:38,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 08:28:38,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 08:28:38,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 08:28:38,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 08:28:38,760 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 08:28:38,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 08:28:38,760 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 08:28:38,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 08:28:38,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 08:28:38,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 08:28:38,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 08:28:38,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 08:28:38,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 08:28:38,761 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 08:28:38,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 08:28:38,761 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 08:28:38,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 08:28:38,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 08:28:38,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 08:28:38,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 08:28:38,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 08:28:38,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 08:28:38,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 08:28:38,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 08:28:38,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 08:28:38,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 08:28:38,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 08:28:38,762 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 08:28:38,762 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 08:28:38,762 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 08:28:38,762 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 08:28:38,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 08:28:38,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 08:28:38,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 08:28:38,928 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 08:28:38,930 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 08:28:38,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-01-19 08:28:38,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5653cc53d/7f6da4ef7b564874ab801e835bc87e42/FLAG518d61df5 [2022-01-19 08:28:39,348 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 08:28:39,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-01-19 08:28:39,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5653cc53d/7f6da4ef7b564874ab801e835bc87e42/FLAG518d61df5 [2022-01-19 08:28:39,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5653cc53d/7f6da4ef7b564874ab801e835bc87e42 [2022-01-19 08:28:39,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 08:28:39,377 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 08:28:39,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 08:28:39,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 08:28:39,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 08:28:39,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 08:28:39" (1/1) ... [2022-01-19 08:28:39,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da808b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39, skipping insertion in model container [2022-01-19 08:28:39,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 08:28:39" (1/1) ... [2022-01-19 08:28:39,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 08:28:39,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 08:28:39,572 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/popl20-more-min-le-max.wvr.c[2486,2499] [2022-01-19 08:28:39,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 08:28:39,589 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 08:28:39,620 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/popl20-more-min-le-max.wvr.c[2486,2499] [2022-01-19 08:28:39,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 08:28:39,632 INFO L208 MainTranslator]: Completed translation [2022-01-19 08:28:39,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39 WrapperNode [2022-01-19 08:28:39,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 08:28:39,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 08:28:39,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 08:28:39,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 08:28:39,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39" (1/1) ... [2022-01-19 08:28:39,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39" (1/1) ... [2022-01-19 08:28:39,672 INFO L137 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-01-19 08:28:39,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 08:28:39,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 08:28:39,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 08:28:39,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 08:28:39,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39" (1/1) ... [2022-01-19 08:28:39,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39" (1/1) ... [2022-01-19 08:28:39,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39" (1/1) ... [2022-01-19 08:28:39,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39" (1/1) ... [2022-01-19 08:28:39,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39" (1/1) ... [2022-01-19 08:28:39,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39" (1/1) ... [2022-01-19 08:28:39,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39" (1/1) ... [2022-01-19 08:28:39,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 08:28:39,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 08:28:39,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 08:28:39,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 08:28:39,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39" (1/1) ... [2022-01-19 08:28:39,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 08:28:39,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 08:28:39,719 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 08:28:39,725 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 08:28:39,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 08:28:39,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 08:28:39,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 08:28:39,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 08:28:39,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 08:28:39,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 08:28:39,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 08:28:39,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 08:28:39,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 08:28:39,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 08:28:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 08:28:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 08:28:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 08:28:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 08:28:39,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 08:28:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 08:28:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 08:28:39,757 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 08:28:39,811 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 08:28:39,812 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 08:28:40,057 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 08:28:40,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 08:28:40,096 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 08:28:40,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 08:28:40 BoogieIcfgContainer [2022-01-19 08:28:40,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 08:28:40,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 08:28:40,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 08:28:40,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 08:28:40,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 08:28:39" (1/3) ... [2022-01-19 08:28:40,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e6408f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 08:28:40, skipping insertion in model container [2022-01-19 08:28:40,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:28:39" (2/3) ... [2022-01-19 08:28:40,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e6408f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 08:28:40, skipping insertion in model container [2022-01-19 08:28:40,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 08:28:40" (3/3) ... [2022-01-19 08:28:40,103 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2022-01-19 08:28:40,106 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 08:28:40,106 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 08:28:40,106 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 08:28:40,139 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,140 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,140 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,140 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,140 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,140 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,141 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,141 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,141 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,141 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,141 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,141 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,141 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,142 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,143 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,143 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,143 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,143 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,143 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,143 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,144 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,144 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,144 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,144 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,144 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,144 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,145 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,145 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,145 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,145 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,156 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,157 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,158 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,158 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,159 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,159 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,160 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,160 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,160 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,160 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,162 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,162 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,163 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,164 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,164 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,164 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,164 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,164 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,164 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:28:40,168 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 08:28:40,204 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 08:28:40,208 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 08:28:40,208 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 08:28:40,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 149 transitions, 322 flow [2022-01-19 08:28:40,266 INFO L129 PetriNetUnfolder]: 10/146 cut-off events. [2022-01-19 08:28:40,266 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 08:28:40,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 146 events. 10/146 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-01-19 08:28:40,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 149 transitions, 322 flow [2022-01-19 08:28:40,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 135 transitions, 288 flow [2022-01-19 08:28:40,297 INFO L129 PetriNetUnfolder]: 10/134 cut-off events. [2022-01-19 08:28:40,297 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 08:28:40,297 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:28:40,298 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] [2022-01-19 08:28:40,298 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 08:28:40,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:28:40,301 INFO L85 PathProgramCache]: Analyzing trace with hash 909462289, now seen corresponding path program 1 times [2022-01-19 08:28:40,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:28:40,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702404434] [2022-01-19 08:28:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:28:40,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:28:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:28:40,448 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 08:28:40,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:28:40,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702404434] [2022-01-19 08:28:40,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702404434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 08:28:40,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 08:28:40,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 08:28:40,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582560560] [2022-01-19 08:28:40,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:28:40,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 08:28:40,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:28:40,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 08:28:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 08:28:40,481 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 149 [2022-01-19 08:28:40,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 135 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 08:28:40,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:28:40,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 149 [2022-01-19 08:28:40,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:28:40,528 INFO L129 PetriNetUnfolder]: 20/193 cut-off events. [2022-01-19 08:28:40,529 INFO L130 PetriNetUnfolder]: For 28/29 co-relation queries the response was YES. [2022-01-19 08:28:40,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 193 events. 20/193 cut-off events. For 28/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 323 event pairs, 7 based on Foata normal form. 22/196 useless extension candidates. Maximal degree in co-relation 141. Up to 32 conditions per place. [2022-01-19 08:28:40,531 INFO L132 encePairwiseOnDemand]: 142/149 looper letters, 8 selfloop transitions, 0 changer transitions 4/128 dead transitions. [2022-01-19 08:28:40,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 290 flow [2022-01-19 08:28:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 08:28:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 08:28:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 281 transitions. [2022-01-19 08:28:40,540 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9429530201342282 [2022-01-19 08:28:40,540 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 281 transitions. [2022-01-19 08:28:40,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 281 transitions. [2022-01-19 08:28:40,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:28:40,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 281 transitions. [2022-01-19 08:28:40,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 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 08:28:40,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 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 08:28:40,548 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 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 08:28:40,549 INFO L186 Difference]: Start difference. First operand has 135 places, 135 transitions, 288 flow. Second operand 2 states and 281 transitions. [2022-01-19 08:28:40,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 290 flow [2022-01-19 08:28:40,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 128 transitions, 278 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 08:28:40,558 INFO L242 Difference]: Finished difference. Result has 130 places, 124 transitions, 254 flow [2022-01-19 08:28:40,559 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=254, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2022-01-19 08:28:40,563 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -5 predicate places. [2022-01-19 08:28:40,563 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 254 flow [2022-01-19 08:28:40,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 08:28:40,563 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:28:40,564 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] [2022-01-19 08:28:40,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 08:28:40,564 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 08:28:40,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:28:40,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1966050017, now seen corresponding path program 1 times [2022-01-19 08:28:40,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:28:40,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759695568] [2022-01-19 08:28:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:28:40,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:28:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:28:40,807 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 08:28:40,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:28:40,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759695568] [2022-01-19 08:28:40,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759695568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 08:28:40,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 08:28:40,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 08:28:40,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125912039] [2022-01-19 08:28:40,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:28:40,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 08:28:40,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:28:40,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 08:28:40,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 08:28:40,818 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 149 [2022-01-19 08:28:40,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 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 08:28:40,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:28:40,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 149 [2022-01-19 08:28:40,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:28:40,965 INFO L129 PetriNetUnfolder]: 155/542 cut-off events. [2022-01-19 08:28:40,965 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-01-19 08:28:40,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 542 events. 155/542 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2712 event pairs, 85 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 860. Up to 159 conditions per place. [2022-01-19 08:28:40,970 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 38 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2022-01-19 08:28:40,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 360 flow [2022-01-19 08:28:40,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 08:28:40,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 08:28:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2022-01-19 08:28:40,978 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7404921700223713 [2022-01-19 08:28:40,978 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2022-01-19 08:28:40,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2022-01-19 08:28:40,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:28:40,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2022-01-19 08:28:40,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 0 states have call successors, (0), 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 08:28:40,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 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 08:28:40,985 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 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 08:28:40,985 INFO L186 Difference]: Start difference. First operand has 130 places, 124 transitions, 254 flow. Second operand 6 states and 662 transitions. [2022-01-19 08:28:40,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 360 flow [2022-01-19 08:28:40,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 08:28:40,990 INFO L242 Difference]: Finished difference. Result has 132 places, 125 transitions, 272 flow [2022-01-19 08:28:40,990 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2022-01-19 08:28:40,991 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -3 predicate places. [2022-01-19 08:28:40,991 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 272 flow [2022-01-19 08:28:40,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 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 08:28:40,992 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:28:40,992 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] [2022-01-19 08:28:40,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 08:28:40,992 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 08:28:40,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:28:40,993 INFO L85 PathProgramCache]: Analyzing trace with hash 464005187, now seen corresponding path program 1 times [2022-01-19 08:28:40,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:28:40,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259773163] [2022-01-19 08:28:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:28:40,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:28:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:28:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 08:28:41,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:28:41,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259773163] [2022-01-19 08:28:41,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259773163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 08:28:41,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 08:28:41,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 08:28:41,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563488561] [2022-01-19 08:28:41,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:28:41,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 08:28:41,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:28:41,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 08:28:41,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 08:28:41,136 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 149 [2022-01-19 08:28:41,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 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 08:28:41,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:28:41,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 149 [2022-01-19 08:28:41,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:28:41,286 INFO L129 PetriNetUnfolder]: 175/543 cut-off events. [2022-01-19 08:28:41,289 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-01-19 08:28:41,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 543 events. 175/543 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2405 event pairs, 108 based on Foata normal form. 9/476 useless extension candidates. Maximal degree in co-relation 972. Up to 261 conditions per place. [2022-01-19 08:28:41,294 INFO L132 encePairwiseOnDemand]: 140/149 looper letters, 29 selfloop transitions, 6 changer transitions 14/143 dead transitions. [2022-01-19 08:28:41,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 416 flow [2022-01-19 08:28:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 08:28:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 08:28:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 937 transitions. [2022-01-19 08:28:41,298 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7860738255033557 [2022-01-19 08:28:41,298 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 937 transitions. [2022-01-19 08:28:41,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 937 transitions. [2022-01-19 08:28:41,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:28:41,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 937 transitions. [2022-01-19 08:28:41,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.125) internal successors, (937), 8 states have internal predecessors, (937), 0 states have call successors, (0), 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 08:28:41,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 0 states have call successors, (0), 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 08:28:41,302 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 0 states have call successors, (0), 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 08:28:41,302 INFO L186 Difference]: Start difference. First operand has 132 places, 125 transitions, 272 flow. Second operand 8 states and 937 transitions. [2022-01-19 08:28:41,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 416 flow [2022-01-19 08:28:41,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 143 transitions, 405 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 08:28:41,307 INFO L242 Difference]: Finished difference. Result has 138 places, 126 transitions, 288 flow [2022-01-19 08:28:41,307 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=138, PETRI_TRANSITIONS=126} [2022-01-19 08:28:41,309 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2022-01-19 08:28:41,309 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 126 transitions, 288 flow [2022-01-19 08:28:41,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 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 08:28:41,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:28:41,310 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] [2022-01-19 08:28:41,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 08:28:41,310 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 08:28:41,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:28:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1074626539, now seen corresponding path program 1 times [2022-01-19 08:28:41,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:28:41,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050771760] [2022-01-19 08:28:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:28:41,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:28:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:28:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 08:28:41,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:28:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050771760] [2022-01-19 08:28:41,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050771760] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 08:28:41,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113969397] [2022-01-19 08:28:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:28:41,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 08:28:41,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 08:28:41,493 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 08:28:41,526 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 08:28:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:28:41,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-19 08:28:41,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 08:28:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 08:28:41,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 08:28:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 08:28:42,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113969397] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 08:28:42,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 08:28:42,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-01-19 08:28:42,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633731714] [2022-01-19 08:28:42,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:28:42,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 08:28:42,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:28:42,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 08:28:42,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-01-19 08:28:42,117 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 149 [2022-01-19 08:28:42,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 126 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 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 08:28:42,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:28:42,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 149 [2022-01-19 08:28:42,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:28:42,238 INFO L129 PetriNetUnfolder]: 129/490 cut-off events. [2022-01-19 08:28:42,239 INFO L130 PetriNetUnfolder]: For 62/76 co-relation queries the response was YES. [2022-01-19 08:28:42,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 490 events. 129/490 cut-off events. For 62/76 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2444 event pairs, 52 based on Foata normal form. 14/475 useless extension candidates. Maximal degree in co-relation 844. Up to 133 conditions per place. [2022-01-19 08:28:42,241 INFO L132 encePairwiseOnDemand]: 141/149 looper letters, 31 selfloop transitions, 7 changer transitions 0/133 dead transitions. [2022-01-19 08:28:42,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 133 transitions, 384 flow [2022-01-19 08:28:42,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 08:28:42,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 08:28:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 815 transitions. [2022-01-19 08:28:42,243 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7813998082454459 [2022-01-19 08:28:42,243 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 815 transitions. [2022-01-19 08:28:42,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 815 transitions. [2022-01-19 08:28:42,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:28:42,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 815 transitions. [2022-01-19 08:28:42,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 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 08:28:42,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 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 08:28:42,247 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 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 08:28:42,247 INFO L186 Difference]: Start difference. First operand has 138 places, 126 transitions, 288 flow. Second operand 7 states and 815 transitions. [2022-01-19 08:28:42,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 133 transitions, 384 flow [2022-01-19 08:28:42,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 133 transitions, 368 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-01-19 08:28:42,250 INFO L242 Difference]: Finished difference. Result has 139 places, 128 transitions, 307 flow [2022-01-19 08:28:42,250 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-01-19 08:28:42,251 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 4 predicate places. [2022-01-19 08:28:42,251 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 307 flow [2022-01-19 08:28:42,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 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 08:28:42,251 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:28:42,251 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] [2022-01-19 08:28:42,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-19 08:28:42,467 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 08:28:42,467 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 08:28:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:28:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash -856593035, now seen corresponding path program 1 times [2022-01-19 08:28:42,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:28:42,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013424131] [2022-01-19 08:28:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:28:42,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:28:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:28:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 08:28:42,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:28:42,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013424131] [2022-01-19 08:28:42,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013424131] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 08:28:42,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122575084] [2022-01-19 08:28:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:28:42,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 08:28:42,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 08:28:42,615 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 08:28:42,616 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 08:28:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:28:42,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-19 08:28:42,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 08:28:42,750 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 08:28:42,877 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 08:28:42,878 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 08:28:42,960 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 08:28:43,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 08:28:43,281 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-19 08:28:43,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 08:28:43,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-19 08:28:43,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-19 08:28:43,544 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 08:28:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 08:28:43,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 08:28:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 08:28:43,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122575084] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 08:28:43,978 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 08:28:43,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24, 9] total 33 [2022-01-19 08:28:43,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446221267] [2022-01-19 08:28:43,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 08:28:43,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-19 08:28:43,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:28:43,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-19 08:28:43,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-01-19 08:28:43,981 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 149 [2022-01-19 08:28:43,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 307 flow. Second operand has 33 states, 33 states have (on average 60.03030303030303) internal successors, (1981), 33 states have internal predecessors, (1981), 0 states have call successors, (0), 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 08:28:43,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:28:43,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 149 [2022-01-19 08:28:43,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:28:46,269 INFO L129 PetriNetUnfolder]: 2340/4572 cut-off events. [2022-01-19 08:28:46,269 INFO L130 PetriNetUnfolder]: For 1852/1852 co-relation queries the response was YES. [2022-01-19 08:28:46,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10019 conditions, 4572 events. 2340/4572 cut-off events. For 1852/1852 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 32561 event pairs, 149 based on Foata normal form. 4/4535 useless extension candidates. Maximal degree in co-relation 10010. Up to 469 conditions per place. [2022-01-19 08:28:46,281 INFO L132 encePairwiseOnDemand]: 121/149 looper letters, 0 selfloop transitions, 0 changer transitions 345/345 dead transitions. [2022-01-19 08:28:46,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 345 transitions, 1545 flow [2022-01-19 08:28:46,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 08:28:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 08:28:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2611 transitions. [2022-01-19 08:28:46,286 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4172259507829978 [2022-01-19 08:28:46,287 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2611 transitions. [2022-01-19 08:28:46,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2611 transitions. [2022-01-19 08:28:46,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:28:46,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2611 transitions. [2022-01-19 08:28:46,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 62.166666666666664) internal successors, (2611), 42 states have internal predecessors, (2611), 0 states have call successors, (0), 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 08:28:46,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 149.0) internal successors, (6407), 43 states have internal predecessors, (6407), 0 states have call successors, (0), 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 08:28:46,298 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 149.0) internal successors, (6407), 43 states have internal predecessors, (6407), 0 states have call successors, (0), 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 08:28:46,298 INFO L186 Difference]: Start difference. First operand has 139 places, 128 transitions, 307 flow. Second operand 42 states and 2611 transitions. [2022-01-19 08:28:46,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 345 transitions, 1545 flow [2022-01-19 08:28:46,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 345 transitions, 1514 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 08:28:46,305 INFO L242 Difference]: Finished difference. Result has 173 places, 0 transitions, 0 flow [2022-01-19 08:28:46,305 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=0, PETRI_PLACES=173, PETRI_TRANSITIONS=0} [2022-01-19 08:28:46,307 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 38 predicate places. [2022-01-19 08:28:46,307 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 0 transitions, 0 flow [2022-01-19 08:28:46,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 60.03030303030303) internal successors, (1981), 33 states have internal predecessors, (1981), 0 states have call successors, (0), 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 08:28:46,309 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 08:28:46,309 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 08:28:46,309 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 08:28:46,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 08:28:46,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-19 08:28:46,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 08:28:46,528 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-01-19 08:28:46,530 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 08:28:46,530 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 08:28:46,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 08:28:46 BasicIcfg [2022-01-19 08:28:46,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 08:28:46,533 INFO L158 Benchmark]: Toolchain (without parser) took 7155.69ms. Allocated memory was 440.4MB in the beginning and 627.0MB in the end (delta: 186.6MB). Free memory was 385.2MB in the beginning and 420.3MB in the end (delta: -35.2MB). Peak memory consumption was 154.2MB. Max. memory is 16.0GB. [2022-01-19 08:28:46,533 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 440.4MB. Free memory is still 401.5MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 08:28:46,533 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.61ms. Allocated memory was 440.4MB in the beginning and 627.0MB in the end (delta: 186.6MB). Free memory was 384.9MB in the beginning and 598.1MB in the end (delta: -213.2MB). Peak memory consumption was 8.9MB. Max. memory is 16.0GB. [2022-01-19 08:28:46,534 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.10ms. Allocated memory is still 627.0MB. Free memory was 598.1MB in the beginning and 596.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 08:28:46,534 INFO L158 Benchmark]: Boogie Preprocessor took 16.07ms. Allocated memory is still 627.0MB. Free memory was 596.0MB in the beginning and 595.1MB in the end (delta: 878.5kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 08:28:46,534 INFO L158 Benchmark]: RCFGBuilder took 408.57ms. Allocated memory is still 627.0MB. Free memory was 594.8MB in the beginning and 576.3MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-19 08:28:46,534 INFO L158 Benchmark]: TraceAbstraction took 6433.23ms. Allocated memory is still 627.0MB. Free memory was 576.3MB in the beginning and 420.3MB in the end (delta: 155.9MB). Peak memory consumption was 158.7MB. Max. memory is 16.0GB. [2022-01-19 08:28:46,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 440.4MB. Free memory is still 401.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 254.61ms. Allocated memory was 440.4MB in the beginning and 627.0MB in the end (delta: 186.6MB). Free memory was 384.9MB in the beginning and 598.1MB in the end (delta: -213.2MB). Peak memory consumption was 8.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.10ms. Allocated memory is still 627.0MB. Free memory was 598.1MB in the beginning and 596.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.07ms. Allocated memory is still 627.0MB. Free memory was 596.0MB in the beginning and 595.1MB in the end (delta: 878.5kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 408.57ms. Allocated memory is still 627.0MB. Free memory was 594.8MB in the beginning and 576.3MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 6433.23ms. Allocated memory is still 627.0MB. Free memory was 576.3MB in the beginning and 420.3MB in the end (delta: 155.9MB). Peak memory consumption was 158.7MB. 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 - PositiveResult [Line: 98]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 165 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: 6.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1320 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1320 mSDsluCounter, 859 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 986 mSDsCounter, 240 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1306 IncrementalHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 240 mSolverCounterUnsat, 98 mSDtfsCounter, 1306 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 472 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=307occurred in iteration=4, InterpolantAutomatonStates: 65, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 812 NumberOfCodeBlocks, 812 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1046 ConstructedInterpolants, 0 QuantifiedInterpolants, 3863 SizeOfPredicates, 32 NumberOfNonLiveVariables, 569 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 8/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 08:28:46,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...