/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-send-receive.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 14:58:58,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 14:58:58,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 14:58:58,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 14:58:58,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 14:58:58,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 14:58:58,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 14:58:58,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 14:58:58,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 14:58:58,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 14:58:58,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 14:58:58,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 14:58:58,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 14:58:58,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 14:58:58,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 14:58:58,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 14:58:58,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 14:58:58,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 14:58:58,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 14:58:58,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 14:58:58,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 14:58:58,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 14:58:58,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 14:58:58,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 14:58:58,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 14:58:58,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 14:58:58,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 14:58:58,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 14:58:58,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 14:58:58,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 14:58:58,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 14:58:58,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 14:58:58,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 14:58:58,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 14:58:58,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 14:58:58,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 14:58:58,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 14:58:58,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 14:58:58,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 14:58:58,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 14:58:58,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 14:58:58,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf [2022-01-19 14:58:58,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 14:58:58,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 14:58:58,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 14:58:58,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 14:58:58,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 14:58:58,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 14:58:58,923 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 14:58:58,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 14:58:58,923 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 14:58:58,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 14:58:58,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 14:58:58,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 14:58:58,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 14:58:58,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 14:58:58,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 14:58:58,924 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 14:58:58,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 14:58:58,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 14:58:58,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 14:58:58,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 14:58:58,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 14:58:58,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 14:58:58,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 14:58:58,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 14:58:58,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 14:58:58,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 14:58:58,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 14:58:58,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 14:58:58,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 14:58:58,925 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 14:58:58,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 14:58:58,925 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 14:58:58,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 14:58:59,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 14:58:59,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 14:58:59,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 14:58:59,145 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 14:58:59,146 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 14:58:59,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive.wvr.c [2022-01-19 14:58:59,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab76603f7/4dc839495d9144eb8c7d7ae09c2d9eaa/FLAGe6c839ae0 [2022-01-19 14:58:59,580 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 14:58:59,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive.wvr.c [2022-01-19 14:58:59,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab76603f7/4dc839495d9144eb8c7d7ae09c2d9eaa/FLAGe6c839ae0 [2022-01-19 14:58:59,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab76603f7/4dc839495d9144eb8c7d7ae09c2d9eaa [2022-01-19 14:58:59,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 14:58:59,597 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 14:58:59,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 14:58:59,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 14:58:59,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 14:58:59,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:58:59" (1/1) ... [2022-01-19 14:58:59,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2d2e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59, skipping insertion in model container [2022-01-19 14:58:59,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:58:59" (1/1) ... [2022-01-19 14:58:59,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 14:58:59,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 14:58:59,759 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-send-receive.wvr.c[3107,3120] [2022-01-19 14:58:59,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 14:58:59,768 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 14:58:59,781 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-send-receive.wvr.c[3107,3120] [2022-01-19 14:58:59,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 14:58:59,791 INFO L208 MainTranslator]: Completed translation [2022-01-19 14:58:59,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59 WrapperNode [2022-01-19 14:58:59,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 14:58:59,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 14:58:59,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 14:58:59,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 14:58:59,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59" (1/1) ... [2022-01-19 14:58:59,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59" (1/1) ... [2022-01-19 14:58:59,814 INFO L137 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 161 [2022-01-19 14:58:59,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 14:58:59,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 14:58:59,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 14:58:59,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 14:58:59,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59" (1/1) ... [2022-01-19 14:58:59,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59" (1/1) ... [2022-01-19 14:58:59,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59" (1/1) ... [2022-01-19 14:58:59,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59" (1/1) ... [2022-01-19 14:58:59,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59" (1/1) ... [2022-01-19 14:58:59,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59" (1/1) ... [2022-01-19 14:58:59,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59" (1/1) ... [2022-01-19 14:58:59,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 14:58:59,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 14:58:59,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 14:58:59,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 14:58:59,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59" (1/1) ... [2022-01-19 14:58:59,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 14:58:59,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:58:59,861 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 14:58:59,865 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 14:58:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 14:58:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 14:58:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 14:58:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 14:58:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 14:58:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 14:58:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 14:58:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 14:58:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 14:58:59,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 14:58:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 14:58:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 14:58:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 14:58:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 14:58:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 14:58:59,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 14:58:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 14:58:59,895 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 14:58:59,976 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 14:58:59,977 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 14:59:00,253 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 14:59:00,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 14:59:00,306 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 14:59:00,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:59:00 BoogieIcfgContainer [2022-01-19 14:59:00,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 14:59:00,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 14:59:00,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 14:59:00,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 14:59:00,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:58:59" (1/3) ... [2022-01-19 14:59:00,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12871a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:59:00, skipping insertion in model container [2022-01-19 14:59:00,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:58:59" (2/3) ... [2022-01-19 14:59:00,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12871a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:59:00, skipping insertion in model container [2022-01-19 14:59:00,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:59:00" (3/3) ... [2022-01-19 14:59:00,314 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2022-01-19 14:59:00,321 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 14:59:00,321 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 14:59:00,321 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 14:59:00,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,387 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,387 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,387 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,387 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,391 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,392 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,394 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,396 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,397 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,402 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:59:00,407 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 14:59:00,452 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 14:59:00,457 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 14:59:00,458 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 14:59:00,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 142 places, 142 transitions, 308 flow [2022-01-19 14:59:00,526 INFO L129 PetriNetUnfolder]: 10/139 cut-off events. [2022-01-19 14:59:00,526 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 14:59:00,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 10/139 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 94 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2022-01-19 14:59:00,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 142 transitions, 308 flow [2022-01-19 14:59:00,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 128 transitions, 274 flow [2022-01-19 14:59:00,572 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2022-01-19 14:59:00,572 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 14:59:00,573 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:59:00,573 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] [2022-01-19 14:59:00,574 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 14:59:00,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:59:00,578 INFO L85 PathProgramCache]: Analyzing trace with hash 606146580, now seen corresponding path program 1 times [2022-01-19 14:59:00,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:59:00,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483770360] [2022-01-19 14:59:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:00,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:59:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:00,768 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 14:59:00,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:59:00,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483770360] [2022-01-19 14:59:00,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483770360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:59:00,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:59:00,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 14:59:00,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519904835] [2022-01-19 14:59:00,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:59:00,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 14:59:00,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:59:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 14:59:00,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 14:59:00,803 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 142 [2022-01-19 14:59:00,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 128 transitions, 274 flow. Second operand has 2 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 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 14:59:00,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:59:00,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 142 [2022-01-19 14:59:00,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:59:00,874 INFO L129 PetriNetUnfolder]: 21/174 cut-off events. [2022-01-19 14:59:00,874 INFO L130 PetriNetUnfolder]: For 26/27 co-relation queries the response was YES. [2022-01-19 14:59:00,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 174 events. 21/174 cut-off events. For 26/27 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 309 event pairs, 7 based on Foata normal form. 20/176 useless extension candidates. Maximal degree in co-relation 141. Up to 33 conditions per place. [2022-01-19 14:59:00,879 INFO L132 encePairwiseOnDemand]: 136/142 looper letters, 9 selfloop transitions, 0 changer transitions 2/122 dead transitions. [2022-01-19 14:59:00,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 280 flow [2022-01-19 14:59:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 14:59:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 14:59:00,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 267 transitions. [2022-01-19 14:59:00,894 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9401408450704225 [2022-01-19 14:59:00,894 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 267 transitions. [2022-01-19 14:59:00,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 267 transitions. [2022-01-19 14:59:00,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:59:00,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 267 transitions. [2022-01-19 14:59:00,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 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 14:59:00,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 14:59:00,907 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 14:59:00,908 INFO L186 Difference]: Start difference. First operand has 128 places, 128 transitions, 274 flow. Second operand 2 states and 267 transitions. [2022-01-19 14:59:00,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 280 flow [2022-01-19 14:59:00,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 122 transitions, 268 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 14:59:00,914 INFO L242 Difference]: Finished difference. Result has 123 places, 120 transitions, 246 flow [2022-01-19 14:59:00,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=246, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2022-01-19 14:59:00,920 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, -5 predicate places. [2022-01-19 14:59:00,921 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 246 flow [2022-01-19 14:59:00,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 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 14:59:00,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:59:00,922 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] [2022-01-19 14:59:00,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 14:59:00,922 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 14:59:00,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:59:00,923 INFO L85 PathProgramCache]: Analyzing trace with hash -56616445, now seen corresponding path program 1 times [2022-01-19 14:59:00,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:59:00,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663818407] [2022-01-19 14:59:00,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:00,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:59:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:01,078 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 14:59:01,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:59:01,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663818407] [2022-01-19 14:59:01,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663818407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:59:01,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:59:01,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 14:59:01,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979697254] [2022-01-19 14:59:01,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:59:01,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 14:59:01,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:59:01,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 14:59:01,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 14:59:01,083 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 142 [2022-01-19 14:59:01,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 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 14:59:01,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:59:01,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 142 [2022-01-19 14:59:01,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:59:01,198 INFO L129 PetriNetUnfolder]: 108/431 cut-off events. [2022-01-19 14:59:01,199 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-01-19 14:59:01,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 431 events. 108/431 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1909 event pairs, 16 based on Foata normal form. 0/390 useless extension candidates. Maximal degree in co-relation 621. Up to 65 conditions per place. [2022-01-19 14:59:01,202 INFO L132 encePairwiseOnDemand]: 137/142 looper letters, 36 selfloop transitions, 5 changer transitions 0/143 dead transitions. [2022-01-19 14:59:01,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 143 transitions, 378 flow [2022-01-19 14:59:01,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 14:59:01,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 14:59:01,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 628 transitions. [2022-01-19 14:59:01,205 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8845070422535212 [2022-01-19 14:59:01,205 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 628 transitions. [2022-01-19 14:59:01,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 628 transitions. [2022-01-19 14:59:01,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:59:01,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 628 transitions. [2022-01-19 14:59:01,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 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 14:59:01,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 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 14:59:01,213 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 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 14:59:01,213 INFO L186 Difference]: Start difference. First operand has 123 places, 120 transitions, 246 flow. Second operand 5 states and 628 transitions. [2022-01-19 14:59:01,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 143 transitions, 378 flow [2022-01-19 14:59:01,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 143 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 14:59:01,221 INFO L242 Difference]: Finished difference. Result has 128 places, 123 transitions, 277 flow [2022-01-19 14:59:01,222 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=277, PETRI_PLACES=128, PETRI_TRANSITIONS=123} [2022-01-19 14:59:01,222 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 0 predicate places. [2022-01-19 14:59:01,222 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 123 transitions, 277 flow [2022-01-19 14:59:01,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 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 14:59:01,223 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:59:01,223 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] [2022-01-19 14:59:01,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 14:59:01,224 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 14:59:01,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:59:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2003606569, now seen corresponding path program 2 times [2022-01-19 14:59:01,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:59:01,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708187830] [2022-01-19 14:59:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:01,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:59:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:01,326 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 14:59:01,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:59:01,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708187830] [2022-01-19 14:59:01,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708187830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:59:01,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:59:01,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 14:59:01,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833328104] [2022-01-19 14:59:01,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:59:01,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 14:59:01,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:59:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 14:59:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 14:59:01,328 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 142 [2022-01-19 14:59:01,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 123 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 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 14:59:01,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:59:01,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 142 [2022-01-19 14:59:01,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:59:01,415 INFO L129 PetriNetUnfolder]: 125/405 cut-off events. [2022-01-19 14:59:01,415 INFO L130 PetriNetUnfolder]: For 91/94 co-relation queries the response was YES. [2022-01-19 14:59:01,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 405 events. 125/405 cut-off events. For 91/94 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1630 event pairs, 12 based on Foata normal form. 3/353 useless extension candidates. Maximal degree in co-relation 716. Up to 84 conditions per place. [2022-01-19 14:59:01,419 INFO L132 encePairwiseOnDemand]: 137/142 looper letters, 37 selfloop transitions, 7 changer transitions 0/146 dead transitions. [2022-01-19 14:59:01,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 435 flow [2022-01-19 14:59:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 14:59:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 14:59:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 627 transitions. [2022-01-19 14:59:01,421 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8830985915492958 [2022-01-19 14:59:01,421 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 627 transitions. [2022-01-19 14:59:01,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 627 transitions. [2022-01-19 14:59:01,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:59:01,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 627 transitions. [2022-01-19 14:59:01,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 0 states have call successors, (0), 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 14:59:01,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 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 14:59:01,424 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 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 14:59:01,425 INFO L186 Difference]: Start difference. First operand has 128 places, 123 transitions, 277 flow. Second operand 5 states and 627 transitions. [2022-01-19 14:59:01,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 435 flow [2022-01-19 14:59:01,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 146 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 14:59:01,430 INFO L242 Difference]: Finished difference. Result has 134 places, 127 transitions, 320 flow [2022-01-19 14:59:01,430 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=134, PETRI_TRANSITIONS=127} [2022-01-19 14:59:01,431 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 6 predicate places. [2022-01-19 14:59:01,431 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 127 transitions, 320 flow [2022-01-19 14:59:01,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 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 14:59:01,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:59:01,432 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] [2022-01-19 14:59:01,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 14:59:01,432 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 14:59:01,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:59:01,433 INFO L85 PathProgramCache]: Analyzing trace with hash 555380035, now seen corresponding path program 3 times [2022-01-19 14:59:01,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:59:01,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833596521] [2022-01-19 14:59:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:01,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:59:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:01,550 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 14:59:01,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:59:01,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833596521] [2022-01-19 14:59:01,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833596521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:59:01,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:59:01,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 14:59:01,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817437351] [2022-01-19 14:59:01,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:59:01,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 14:59:01,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:59:01,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 14:59:01,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 14:59:01,556 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 142 [2022-01-19 14:59:01,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 127 transitions, 320 flow. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 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 14:59:01,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:59:01,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 142 [2022-01-19 14:59:01,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:59:01,691 INFO L129 PetriNetUnfolder]: 211/627 cut-off events. [2022-01-19 14:59:01,691 INFO L130 PetriNetUnfolder]: For 255/262 co-relation queries the response was YES. [2022-01-19 14:59:01,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 627 events. 211/627 cut-off events. For 255/262 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3174 event pairs, 20 based on Foata normal form. 11/557 useless extension candidates. Maximal degree in co-relation 1227. Up to 122 conditions per place. [2022-01-19 14:59:01,698 INFO L132 encePairwiseOnDemand]: 135/142 looper letters, 43 selfloop transitions, 7 changer transitions 12/163 dead transitions. [2022-01-19 14:59:01,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 163 transitions, 571 flow [2022-01-19 14:59:01,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 14:59:01,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 14:59:01,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 863 transitions. [2022-01-19 14:59:01,701 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8682092555331992 [2022-01-19 14:59:01,701 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 863 transitions. [2022-01-19 14:59:01,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 863 transitions. [2022-01-19 14:59:01,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:59:01,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 863 transitions. [2022-01-19 14:59:01,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.28571428571429) internal successors, (863), 7 states have internal predecessors, (863), 0 states have call successors, (0), 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 14:59:01,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 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 14:59:01,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 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 14:59:01,705 INFO L186 Difference]: Start difference. First operand has 134 places, 127 transitions, 320 flow. Second operand 7 states and 863 transitions. [2022-01-19 14:59:01,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 163 transitions, 571 flow [2022-01-19 14:59:01,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 163 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 14:59:01,711 INFO L242 Difference]: Finished difference. Result has 141 places, 125 transitions, 325 flow [2022-01-19 14:59:01,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=141, PETRI_TRANSITIONS=125} [2022-01-19 14:59:01,712 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 13 predicate places. [2022-01-19 14:59:01,712 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 125 transitions, 325 flow [2022-01-19 14:59:01,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 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 14:59:01,713 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:59:01,713 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] [2022-01-19 14:59:01,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 14:59:01,713 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 14:59:01,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:59:01,714 INFO L85 PathProgramCache]: Analyzing trace with hash -949973330, now seen corresponding path program 1 times [2022-01-19 14:59:01,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:59:01,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258344535] [2022-01-19 14:59:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:01,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:59:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:01,865 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 14:59:01,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:59:01,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258344535] [2022-01-19 14:59:01,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258344535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:59:01,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:59:01,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 14:59:01,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986642064] [2022-01-19 14:59:01,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:59:01,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 14:59:01,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:59:01,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 14:59:01,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 14:59:01,868 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 142 [2022-01-19 14:59:01,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 125 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 14:59:01,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:59:01,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 142 [2022-01-19 14:59:01,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:59:01,923 INFO L129 PetriNetUnfolder]: 49/301 cut-off events. [2022-01-19 14:59:01,924 INFO L130 PetriNetUnfolder]: For 131/141 co-relation queries the response was YES. [2022-01-19 14:59:01,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 301 events. 49/301 cut-off events. For 131/141 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 918 event pairs, 9 based on Foata normal form. 13/288 useless extension candidates. Maximal degree in co-relation 502. Up to 70 conditions per place. [2022-01-19 14:59:01,926 INFO L132 encePairwiseOnDemand]: 136/142 looper letters, 17 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2022-01-19 14:59:01,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 127 transitions, 363 flow [2022-01-19 14:59:01,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 14:59:01,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 14:59:01,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2022-01-19 14:59:01,928 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8826291079812206 [2022-01-19 14:59:01,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2022-01-19 14:59:01,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2022-01-19 14:59:01,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:59:01,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2022-01-19 14:59:01,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 14:59:01,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 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 14:59:01,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 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 14:59:01,931 INFO L186 Difference]: Start difference. First operand has 141 places, 125 transitions, 325 flow. Second operand 3 states and 376 transitions. [2022-01-19 14:59:01,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 127 transitions, 363 flow [2022-01-19 14:59:01,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 127 transitions, 339 flow, removed 1 selfloop flow, removed 11 redundant places. [2022-01-19 14:59:01,935 INFO L242 Difference]: Finished difference. Result has 133 places, 125 transitions, 311 flow [2022-01-19 14:59:01,935 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=133, PETRI_TRANSITIONS=125} [2022-01-19 14:59:01,936 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 5 predicate places. [2022-01-19 14:59:01,936 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 125 transitions, 311 flow [2022-01-19 14:59:01,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 14:59:01,937 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:59:01,937 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] [2022-01-19 14:59:01,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 14:59:01,937 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:59:01,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:59:01,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2127396576, now seen corresponding path program 1 times [2022-01-19 14:59:01,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:59:01,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896881501] [2022-01-19 14:59:01,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:01,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:59:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:59:01,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:59:01,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896881501] [2022-01-19 14:59:01,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896881501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:59:01,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:59:01,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 14:59:01,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213208137] [2022-01-19 14:59:01,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:59:01,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 14:59:01,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:59:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 14:59:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 14:59:01,998 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 142 [2022-01-19 14:59:01,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 125 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 14:59:01,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:59:01,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 142 [2022-01-19 14:59:01,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:59:02,060 INFO L129 PetriNetUnfolder]: 79/365 cut-off events. [2022-01-19 14:59:02,060 INFO L130 PetriNetUnfolder]: For 87/113 co-relation queries the response was YES. [2022-01-19 14:59:02,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 365 events. 79/365 cut-off events. For 87/113 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1392 event pairs, 9 based on Foata normal form. 16/353 useless extension candidates. Maximal degree in co-relation 651. Up to 114 conditions per place. [2022-01-19 14:59:02,063 INFO L132 encePairwiseOnDemand]: 139/142 looper letters, 19 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2022-01-19 14:59:02,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 369 flow [2022-01-19 14:59:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 14:59:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 14:59:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2022-01-19 14:59:02,065 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9061032863849765 [2022-01-19 14:59:02,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2022-01-19 14:59:02,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2022-01-19 14:59:02,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:59:02,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2022-01-19 14:59:02,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 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 14:59:02,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 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 14:59:02,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 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 14:59:02,068 INFO L186 Difference]: Start difference. First operand has 133 places, 125 transitions, 311 flow. Second operand 3 states and 386 transitions. [2022-01-19 14:59:02,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 369 flow [2022-01-19 14:59:02,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 130 transitions, 365 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 14:59:02,072 INFO L242 Difference]: Finished difference. Result has 135 places, 125 transitions, 314 flow [2022-01-19 14:59:02,072 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=135, PETRI_TRANSITIONS=125} [2022-01-19 14:59:02,073 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 7 predicate places. [2022-01-19 14:59:02,073 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 125 transitions, 314 flow [2022-01-19 14:59:02,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 14:59:02,073 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:59:02,074 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] [2022-01-19 14:59:02,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 14:59:02,074 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:59:02,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:59:02,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1212210918, now seen corresponding path program 1 times [2022-01-19 14:59:02,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:59:02,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629584729] [2022-01-19 14:59:02,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:02,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:59:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:59:02,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:59:02,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629584729] [2022-01-19 14:59:02,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629584729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:59:02,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:59:02,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 14:59:02,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493275740] [2022-01-19 14:59:02,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:59:02,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 14:59:02,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:59:02,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 14:59:02,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 14:59:02,235 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-01-19 14:59:02,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 125 transitions, 314 flow. Second operand has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 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 14:59:02,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:59:02,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-01-19 14:59:02,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:59:02,545 INFO L129 PetriNetUnfolder]: 129/574 cut-off events. [2022-01-19 14:59:02,545 INFO L130 PetriNetUnfolder]: For 218/280 co-relation queries the response was YES. [2022-01-19 14:59:02,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 574 events. 129/574 cut-off events. For 218/280 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2783 event pairs, 24 based on Foata normal form. 66/614 useless extension candidates. Maximal degree in co-relation 1139. Up to 143 conditions per place. [2022-01-19 14:59:02,549 INFO L132 encePairwiseOnDemand]: 132/142 looper letters, 39 selfloop transitions, 6 changer transitions 21/157 dead transitions. [2022-01-19 14:59:02,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 157 transitions, 527 flow [2022-01-19 14:59:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 14:59:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 14:59:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1095 transitions. [2022-01-19 14:59:02,552 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7711267605633803 [2022-01-19 14:59:02,552 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1095 transitions. [2022-01-19 14:59:02,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1095 transitions. [2022-01-19 14:59:02,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:59:02,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1095 transitions. [2022-01-19 14:59:02,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 109.5) internal successors, (1095), 10 states have internal predecessors, (1095), 0 states have call successors, (0), 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 14:59:02,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 14:59:02,558 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 14:59:02,559 INFO L186 Difference]: Start difference. First operand has 135 places, 125 transitions, 314 flow. Second operand 10 states and 1095 transitions. [2022-01-19 14:59:02,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 157 transitions, 527 flow [2022-01-19 14:59:02,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 157 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 14:59:02,562 INFO L242 Difference]: Finished difference. Result has 147 places, 126 transitions, 338 flow [2022-01-19 14:59:02,563 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=134, 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=10, PETRI_FLOW=338, PETRI_PLACES=147, PETRI_TRANSITIONS=126} [2022-01-19 14:59:02,563 INFO L334 CegarLoopForPetriNet]: 128 programPoint places, 19 predicate places. [2022-01-19 14:59:02,563 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 126 transitions, 338 flow [2022-01-19 14:59:02,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 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 14:59:02,564 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:59:02,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:59:02,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 14:59:02,564 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:59:02,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:59:02,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1473168341, now seen corresponding path program 1 times [2022-01-19 14:59:02,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:59:02,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346741505] [2022-01-19 14:59:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:02,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:59:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:02,714 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 14:59:02,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:59:02,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346741505] [2022-01-19 14:59:02,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346741505] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:59:02,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737079981] [2022-01-19 14:59:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:02,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:59:02,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:59:02,733 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 14:59:02,734 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 14:59:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:02,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-19 14:59:02,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:59:02,936 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 14:59:02,967 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-19 14:59:02,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-01-19 14:59:03,003 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-19 14:59:03,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-01-19 14:59:03,538 INFO L353 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-01-19 14:59:03,538 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 30 [2022-01-19 14:59:03,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 14:59:03,979 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 6 treesize of output 5 [2022-01-19 14:59:04,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:59:04,168 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 6 treesize of output 5 [2022-01-19 14:59:04,330 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 23 treesize of output 7 [2022-01-19 14:59:04,424 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 14:59:04,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:59:05,944 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:59:05,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 79 [2022-01-19 14:59:05,963 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:59:05,964 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3988 treesize of output 3812 [2022-01-19 14:59:05,989 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:59:05,989 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 3796 treesize of output 3236 [2022-01-19 14:59:06,014 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:59:06,015 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 3220 treesize of output 3092 [2022-01-19 14:59:06,041 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:59:06,042 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 3076 treesize of output 2804 [2022-01-19 14:59:06,058 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-19 14:59:06,078 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 14:59:06,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:59:06,275 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-19 14:59:06,278 INFO L158 Benchmark]: Toolchain (without parser) took 6680.12ms. Allocated memory was 373.3MB in the beginning and 450.9MB in the end (delta: 77.6MB). Free memory was 320.3MB in the beginning and 258.6MB in the end (delta: 61.6MB). Peak memory consumption was 140.3MB. Max. memory is 16.0GB. [2022-01-19 14:59:06,278 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 373.3MB. Free memory was 336.7MB in the beginning and 336.6MB in the end (delta: 77.2kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 14:59:06,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.11ms. Allocated memory is still 373.3MB. Free memory was 320.0MB in the beginning and 344.2MB in the end (delta: -24.1MB). Peak memory consumption was 12.9MB. Max. memory is 16.0GB. [2022-01-19 14:59:06,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.61ms. Allocated memory is still 373.3MB. Free memory was 344.2MB in the beginning and 343.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 14:59:06,278 INFO L158 Benchmark]: Boogie Preprocessor took 15.45ms. Allocated memory is still 373.3MB. Free memory was 343.1MB in the beginning and 341.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 14:59:06,279 INFO L158 Benchmark]: RCFGBuilder took 476.73ms. Allocated memory is still 373.3MB. Free memory was 341.0MB in the beginning and 320.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2022-01-19 14:59:06,279 INFO L158 Benchmark]: TraceAbstraction took 5968.51ms. Allocated memory was 373.3MB in the beginning and 450.9MB in the end (delta: 77.6MB). Free memory was 319.0MB in the beginning and 258.6MB in the end (delta: 60.4MB). Peak memory consumption was 140.1MB. Max. memory is 16.0GB. [2022-01-19 14:59:06,280 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 373.3MB. Free memory was 336.7MB in the beginning and 336.6MB in the end (delta: 77.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 191.11ms. Allocated memory is still 373.3MB. Free memory was 320.0MB in the beginning and 344.2MB in the end (delta: -24.1MB). Peak memory consumption was 12.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 22.61ms. Allocated memory is still 373.3MB. Free memory was 344.2MB in the beginning and 343.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 15.45ms. Allocated memory is still 373.3MB. Free memory was 343.1MB in the beginning and 341.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 476.73ms. Allocated memory is still 373.3MB. Free memory was 341.0MB in the beginning and 320.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 5968.51ms. Allocated memory was 373.3MB in the beginning and 450.9MB in the end (delta: 77.6MB). Free memory was 319.0MB in the beginning and 258.6MB in the end (delta: 60.4MB). Peak memory consumption was 140.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-19 14:59:06,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...