/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/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 11:20:13,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 11:20:13,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 11:20:13,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 11:20:13,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 11:20:13,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 11:20:13,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 11:20:13,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 11:20:13,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 11:20:13,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 11:20:13,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 11:20:13,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 11:20:13,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 11:20:13,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 11:20:13,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 11:20:13,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 11:20:13,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 11:20:13,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 11:20:13,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 11:20:13,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 11:20:13,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 11:20:13,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 11:20:13,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 11:20:13,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 11:20:13,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 11:20:13,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 11:20:13,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 11:20:13,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 11:20:13,849 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 11:20:13,883 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 11:20:13,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 11:20:13,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 11:20:13,884 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 11:20:13,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 11:20:13,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 11:20:13,885 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 11:20:13,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 11:20:13,885 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 11:20:13,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 11:20:13,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 11:20:13,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 11:20:13,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 11:20:13,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 11:20:13,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 11:20:13,886 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 11:20:13,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 11:20:13,886 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 11:20:13,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 11:20:13,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 11:20:13,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 11:20:13,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 11:20:13,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 11:20:13,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:20:13,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 11:20:13,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 11:20:13,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 11:20:13,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 11:20:13,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 11:20:13,900 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 11:20:13,900 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 11:20:13,900 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 11:20:13,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 11:20:14,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 11:20:14,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 11:20:14,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 11:20:14,117 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 11:20:14,117 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 11:20:14,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-19 11:20:14,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4328caaae/9cccf3e2d19c4c7f97a58e33f0b76fe6/FLAGef7f88e1c [2022-01-19 11:20:14,549 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 11:20:14,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-19 11:20:14,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4328caaae/9cccf3e2d19c4c7f97a58e33f0b76fe6/FLAGef7f88e1c [2022-01-19 11:20:14,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4328caaae/9cccf3e2d19c4c7f97a58e33f0b76fe6 [2022-01-19 11:20:14,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 11:20:14,916 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 11:20:14,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 11:20:14,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 11:20:14,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 11:20:14,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:20:14" (1/1) ... [2022-01-19 11:20:14,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e562e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:14, skipping insertion in model container [2022-01-19 11:20:14,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:20:14" (1/1) ... [2022-01-19 11:20:14,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 11:20:14,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 11:20:15,140 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-19 11:20:15,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:20:15,334 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 11:20:15,345 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-19 11:20:15,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:20:15,425 INFO L208 MainTranslator]: Completed translation [2022-01-19 11:20:15,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:15 WrapperNode [2022-01-19 11:20:15,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 11:20:15,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 11:20:15,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 11:20:15,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 11:20:15,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:15" (1/1) ... [2022-01-19 11:20:15,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:15" (1/1) ... [2022-01-19 11:20:15,487 INFO L137 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2022-01-19 11:20:15,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 11:20:15,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 11:20:15,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 11:20:15,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 11:20:15,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:15" (1/1) ... [2022-01-19 11:20:15,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:15" (1/1) ... [2022-01-19 11:20:15,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:15" (1/1) ... [2022-01-19 11:20:15,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:15" (1/1) ... [2022-01-19 11:20:15,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:15" (1/1) ... [2022-01-19 11:20:15,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:15" (1/1) ... [2022-01-19 11:20:15,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:15" (1/1) ... [2022-01-19 11:20:15,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 11:20:15,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 11:20:15,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 11:20:15,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 11:20:15,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:15" (1/1) ... [2022-01-19 11:20:15,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:20:15,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:20:15,561 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 11:20:15,571 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 11:20:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 11:20:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 11:20:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 11:20:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 11:20:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 11:20:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 11:20:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 11:20:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 11:20:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 11:20:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-19 11:20:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-19 11:20:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-01-19 11:20:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-01-19 11:20:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 11:20:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 11:20:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 11:20:15,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 11:20:15,596 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 11:20:15,693 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 11:20:15,694 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 11:20:15,901 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 11:20:15,908 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 11:20:15,908 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 11:20:15,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:20:15 BoogieIcfgContainer [2022-01-19 11:20:15,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 11:20:15,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 11:20:15,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 11:20:15,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 11:20:15,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 11:20:14" (1/3) ... [2022-01-19 11:20:15,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528e7d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:20:15, skipping insertion in model container [2022-01-19 11:20:15,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:15" (2/3) ... [2022-01-19 11:20:15,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528e7d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:20:15, skipping insertion in model container [2022-01-19 11:20:15,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:20:15" (3/3) ... [2022-01-19 11:20:15,918 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-19 11:20:15,923 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 11:20:15,923 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 11:20:15,923 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 11:20:15,956 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,956 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,956 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,956 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,957 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,957 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,957 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,957 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,958 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,958 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,958 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,958 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,958 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,959 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,959 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,959 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,959 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,959 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,959 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,960 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,960 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,960 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,961 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,961 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,961 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,961 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,961 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,962 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,962 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,962 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,962 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,962 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,963 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,963 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,963 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,963 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,964 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,964 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,964 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,964 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,964 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,964 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,964 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,965 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,965 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,965 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,965 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,966 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,969 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,969 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,969 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,969 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,972 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,972 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,972 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,972 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,973 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,973 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,973 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,973 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,974 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,974 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,974 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,974 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:15,975 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 11:20:16,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 11:20:16,024 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 11:20:16,024 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-19 11:20:16,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 105 transitions, 230 flow [2022-01-19 11:20:16,074 INFO L129 PetriNetUnfolder]: 2/101 cut-off events. [2022-01-19 11:20:16,074 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 11:20:16,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 2/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-01-19 11:20:16,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 105 transitions, 230 flow [2022-01-19 11:20:16,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 85 transitions, 182 flow [2022-01-19 11:20:16,103 INFO L129 PetriNetUnfolder]: 1/84 cut-off events. [2022-01-19 11:20:16,103 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 11:20:16,103 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:16,104 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] [2022-01-19 11:20:16,104 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 11:20:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:16,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1881502097, now seen corresponding path program 1 times [2022-01-19 11:20:16,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:16,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147536461] [2022-01-19 11:20:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:16,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:16,579 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 11:20:16,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:16,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147536461] [2022-01-19 11:20:16,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147536461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:16,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:16,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:20:16,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297878613] [2022-01-19 11:20:16,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:16,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:20:16,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:16,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:20:16,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:20:16,649 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-01-19 11:20:16,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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 11:20:16,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:16,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-01-19 11:20:16,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:17,213 INFO L129 PetriNetUnfolder]: 872/1800 cut-off events. [2022-01-19 11:20:17,213 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-01-19 11:20:17,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3227 conditions, 1800 events. 872/1800 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10795 event pairs, 55 based on Foata normal form. 63/1795 useless extension candidates. Maximal degree in co-relation 3189. Up to 443 conditions per place. [2022-01-19 11:20:17,232 INFO L132 encePairwiseOnDemand]: 93/105 looper letters, 32 selfloop transitions, 7 changer transitions 56/159 dead transitions. [2022-01-19 11:20:17,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 159 transitions, 538 flow [2022-01-19 11:20:17,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:20:17,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:20:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1154 transitions. [2022-01-19 11:20:17,252 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8454212454212454 [2022-01-19 11:20:17,252 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1154 transitions. [2022-01-19 11:20:17,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1154 transitions. [2022-01-19 11:20:17,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:17,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1154 transitions. [2022-01-19 11:20:17,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 88.76923076923077) internal successors, (1154), 13 states have internal predecessors, (1154), 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 11:20:17,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:20:17,271 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:20:17,273 INFO L186 Difference]: Start difference. First operand has 97 places, 85 transitions, 182 flow. Second operand 13 states and 1154 transitions. [2022-01-19 11:20:17,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 159 transitions, 538 flow [2022-01-19 11:20:17,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 159 transitions, 528 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 11:20:17,282 INFO L242 Difference]: Finished difference. Result has 117 places, 89 transitions, 276 flow [2022-01-19 11:20:17,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=276, PETRI_PLACES=117, PETRI_TRANSITIONS=89} [2022-01-19 11:20:17,286 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 20 predicate places. [2022-01-19 11:20:17,287 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 89 transitions, 276 flow [2022-01-19 11:20:17,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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 11:20:17,287 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:17,287 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] [2022-01-19 11:20:17,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 11:20:17,288 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 11:20:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash 676107888, now seen corresponding path program 1 times [2022-01-19 11:20:17,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:17,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226303245] [2022-01-19 11:20:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:17,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:17,480 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 11:20:17,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:17,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226303245] [2022-01-19 11:20:17,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226303245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:17,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:17,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:20:17,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073177849] [2022-01-19 11:20:17,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:17,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:20:17,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:17,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:20:17,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:20:17,485 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-01-19 11:20:17,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 89 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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 11:20:17,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:17,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-01-19 11:20:17,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:17,850 INFO L129 PetriNetUnfolder]: 606/1519 cut-off events. [2022-01-19 11:20:17,851 INFO L130 PetriNetUnfolder]: For 3537/4677 co-relation queries the response was YES. [2022-01-19 11:20:17,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5136 conditions, 1519 events. 606/1519 cut-off events. For 3537/4677 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10101 event pairs, 52 based on Foata normal form. 38/1505 useless extension candidates. Maximal degree in co-relation 5088. Up to 419 conditions per place. [2022-01-19 11:20:17,866 INFO L132 encePairwiseOnDemand]: 93/105 looper letters, 29 selfloop transitions, 12 changer transitions 55/160 dead transitions. [2022-01-19 11:20:17,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 160 transitions, 996 flow [2022-01-19 11:20:17,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:20:17,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:20:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1137 transitions. [2022-01-19 11:20:17,870 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.832967032967033 [2022-01-19 11:20:17,870 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1137 transitions. [2022-01-19 11:20:17,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1137 transitions. [2022-01-19 11:20:17,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:17,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1137 transitions. [2022-01-19 11:20:17,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.46153846153847) internal successors, (1137), 13 states have internal predecessors, (1137), 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 11:20:17,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:20:17,877 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:20:17,877 INFO L186 Difference]: Start difference. First operand has 117 places, 89 transitions, 276 flow. Second operand 13 states and 1137 transitions. [2022-01-19 11:20:17,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 160 transitions, 996 flow [2022-01-19 11:20:17,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 160 transitions, 968 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-01-19 11:20:17,890 INFO L242 Difference]: Finished difference. Result has 128 places, 96 transitions, 421 flow [2022-01-19 11:20:17,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=421, PETRI_PLACES=128, PETRI_TRANSITIONS=96} [2022-01-19 11:20:17,891 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 31 predicate places. [2022-01-19 11:20:17,891 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 96 transitions, 421 flow [2022-01-19 11:20:17,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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 11:20:17,892 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:17,892 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] [2022-01-19 11:20:17,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 11:20:17,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 11:20:17,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:17,894 INFO L85 PathProgramCache]: Analyzing trace with hash -216498907, now seen corresponding path program 1 times [2022-01-19 11:20:17,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:17,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428631784] [2022-01-19 11:20:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:17,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:18,069 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 11:20:18,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:18,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428631784] [2022-01-19 11:20:18,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428631784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:18,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:18,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 11:20:18,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672793376] [2022-01-19 11:20:18,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:18,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 11:20:18,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:18,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 11:20:18,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 11:20:18,072 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-01-19 11:20:18,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 96 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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 11:20:18,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:18,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-01-19 11:20:18,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:18,401 INFO L129 PetriNetUnfolder]: 431/1241 cut-off events. [2022-01-19 11:20:18,402 INFO L130 PetriNetUnfolder]: For 5889/6972 co-relation queries the response was YES. [2022-01-19 11:20:18,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5067 conditions, 1241 events. 431/1241 cut-off events. For 5889/6972 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8169 event pairs, 51 based on Foata normal form. 31/1221 useless extension candidates. Maximal degree in co-relation 5007. Up to 298 conditions per place. [2022-01-19 11:20:18,414 INFO L132 encePairwiseOnDemand]: 93/105 looper letters, 32 selfloop transitions, 13 changer transitions 72/181 dead transitions. [2022-01-19 11:20:18,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 181 transitions, 1546 flow [2022-01-19 11:20:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 11:20:18,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 11:20:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 968 transitions. [2022-01-19 11:20:18,419 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8380952380952381 [2022-01-19 11:20:18,421 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 968 transitions. [2022-01-19 11:20:18,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 968 transitions. [2022-01-19 11:20:18,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:18,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 968 transitions. [2022-01-19 11:20:18,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 88.0) internal successors, (968), 11 states have internal predecessors, (968), 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 11:20:18,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 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 11:20:18,427 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 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 11:20:18,427 INFO L186 Difference]: Start difference. First operand has 128 places, 96 transitions, 421 flow. Second operand 11 states and 968 transitions. [2022-01-19 11:20:18,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 181 transitions, 1546 flow [2022-01-19 11:20:18,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 181 transitions, 1479 flow, removed 30 selfloop flow, removed 4 redundant places. [2022-01-19 11:20:18,445 INFO L242 Difference]: Finished difference. Result has 133 places, 97 transitions, 481 flow [2022-01-19 11:20:18,446 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=481, PETRI_PLACES=133, PETRI_TRANSITIONS=97} [2022-01-19 11:20:18,448 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 36 predicate places. [2022-01-19 11:20:18,448 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 97 transitions, 481 flow [2022-01-19 11:20:18,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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 11:20:18,449 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:18,449 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] [2022-01-19 11:20:18,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 11:20:18,450 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 11:20:18,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:18,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1419149676, now seen corresponding path program 1 times [2022-01-19 11:20:18,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:18,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200443726] [2022-01-19 11:20:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:18,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:18,612 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 11:20:18,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:18,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200443726] [2022-01-19 11:20:18,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200443726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:18,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:18,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:20:18,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324664108] [2022-01-19 11:20:18,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:18,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:20:18,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:20:18,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:20:18,615 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-01-19 11:20:18,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 97 transitions, 481 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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 11:20:18,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:18,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-01-19 11:20:18,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:18,879 INFO L129 PetriNetUnfolder]: 203/684 cut-off events. [2022-01-19 11:20:18,880 INFO L130 PetriNetUnfolder]: For 4273/5449 co-relation queries the response was YES. [2022-01-19 11:20:18,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 684 events. 203/684 cut-off events. For 4273/5449 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4157 event pairs, 18 based on Foata normal form. 17/680 useless extension candidates. Maximal degree in co-relation 3024. Up to 152 conditions per place. [2022-01-19 11:20:18,888 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 35 selfloop transitions, 15 changer transitions 35/149 dead transitions. [2022-01-19 11:20:18,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 149 transitions, 1204 flow [2022-01-19 11:20:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:20:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:20:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1123 transitions. [2022-01-19 11:20:18,891 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8227106227106227 [2022-01-19 11:20:18,891 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1123 transitions. [2022-01-19 11:20:18,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1123 transitions. [2022-01-19 11:20:18,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:18,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1123 transitions. [2022-01-19 11:20:18,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 86.38461538461539) internal successors, (1123), 13 states have internal predecessors, (1123), 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 11:20:18,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:20:18,897 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:20:18,897 INFO L186 Difference]: Start difference. First operand has 133 places, 97 transitions, 481 flow. Second operand 13 states and 1123 transitions. [2022-01-19 11:20:18,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 149 transitions, 1204 flow [2022-01-19 11:20:18,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 149 transitions, 1082 flow, removed 31 selfloop flow, removed 12 redundant places. [2022-01-19 11:20:18,907 INFO L242 Difference]: Finished difference. Result has 139 places, 101 transitions, 574 flow [2022-01-19 11:20:18,907 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=574, PETRI_PLACES=139, PETRI_TRANSITIONS=101} [2022-01-19 11:20:18,908 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 42 predicate places. [2022-01-19 11:20:18,908 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 101 transitions, 574 flow [2022-01-19 11:20:18,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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 11:20:18,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:18,909 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] [2022-01-19 11:20:18,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 11:20:18,909 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 11:20:18,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:18,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1092340014, now seen corresponding path program 1 times [2022-01-19 11:20:18,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:18,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930025650] [2022-01-19 11:20:18,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:18,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:19,059 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 11:20:19,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:19,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930025650] [2022-01-19 11:20:19,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930025650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:19,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:19,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 11:20:19,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092547549] [2022-01-19 11:20:19,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:19,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 11:20:19,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:19,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 11:20:19,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 11:20:19,062 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-01-19 11:20:19,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 101 transitions, 574 flow. Second operand has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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 11:20:19,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:19,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-01-19 11:20:19,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:19,279 INFO L129 PetriNetUnfolder]: 150/654 cut-off events. [2022-01-19 11:20:19,279 INFO L130 PetriNetUnfolder]: For 5255/6070 co-relation queries the response was YES. [2022-01-19 11:20:19,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2992 conditions, 654 events. 150/654 cut-off events. For 5255/6070 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4181 event pairs, 8 based on Foata normal form. 19/655 useless extension candidates. Maximal degree in co-relation 2922. Up to 111 conditions per place. [2022-01-19 11:20:19,286 INFO L132 encePairwiseOnDemand]: 92/105 looper letters, 31 selfloop transitions, 16 changer transitions 73/184 dead transitions. [2022-01-19 11:20:19,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 184 transitions, 1963 flow [2022-01-19 11:20:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 11:20:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 11:20:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 963 transitions. [2022-01-19 11:20:19,289 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8337662337662337 [2022-01-19 11:20:19,289 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 963 transitions. [2022-01-19 11:20:19,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 963 transitions. [2022-01-19 11:20:19,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:19,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 963 transitions. [2022-01-19 11:20:19,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.54545454545455) internal successors, (963), 11 states have internal predecessors, (963), 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 11:20:19,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 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 11:20:19,294 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 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 11:20:19,294 INFO L186 Difference]: Start difference. First operand has 139 places, 101 transitions, 574 flow. Second operand 11 states and 963 transitions. [2022-01-19 11:20:19,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 184 transitions, 1963 flow [2022-01-19 11:20:19,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 184 transitions, 1891 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-01-19 11:20:19,308 INFO L242 Difference]: Finished difference. Result has 144 places, 100 transitions, 612 flow [2022-01-19 11:20:19,308 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=612, PETRI_PLACES=144, PETRI_TRANSITIONS=100} [2022-01-19 11:20:19,308 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 47 predicate places. [2022-01-19 11:20:19,309 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 100 transitions, 612 flow [2022-01-19 11:20:19,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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 11:20:19,309 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:19,309 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] [2022-01-19 11:20:19,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 11:20:19,310 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 11:20:19,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash -95709312, now seen corresponding path program 1 times [2022-01-19 11:20:19,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:19,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12415467] [2022-01-19 11:20:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:19,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:19,416 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 11:20:19,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:19,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12415467] [2022-01-19 11:20:19,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12415467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:19,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:19,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:20:19,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803568546] [2022-01-19 11:20:19,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:19,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:20:19,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:19,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:20:19,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:20:19,419 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-01-19 11:20:19,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 100 transitions, 612 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 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 11:20:19,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:19,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-01-19 11:20:19,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:19,645 INFO L129 PetriNetUnfolder]: 54/403 cut-off events. [2022-01-19 11:20:19,646 INFO L130 PetriNetUnfolder]: For 3342/3458 co-relation queries the response was YES. [2022-01-19 11:20:19,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1633 conditions, 403 events. 54/403 cut-off events. For 3342/3458 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2225 event pairs, 3 based on Foata normal form. 11/407 useless extension candidates. Maximal degree in co-relation 1554. Up to 49 conditions per place. [2022-01-19 11:20:19,650 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 30 selfloop transitions, 12 changer transitions 28/134 dead transitions. [2022-01-19 11:20:19,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 134 transitions, 1216 flow [2022-01-19 11:20:19,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:20:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:20:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1114 transitions. [2022-01-19 11:20:19,653 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8161172161172161 [2022-01-19 11:20:19,653 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1114 transitions. [2022-01-19 11:20:19,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1114 transitions. [2022-01-19 11:20:19,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:19,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1114 transitions. [2022-01-19 11:20:19,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.6923076923077) internal successors, (1114), 13 states have internal predecessors, (1114), 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 11:20:19,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:20:19,660 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:20:19,660 INFO L186 Difference]: Start difference. First operand has 144 places, 100 transitions, 612 flow. Second operand 13 states and 1114 transitions. [2022-01-19 11:20:19,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 134 transitions, 1216 flow [2022-01-19 11:20:19,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 134 transitions, 1058 flow, removed 55 selfloop flow, removed 8 redundant places. [2022-01-19 11:20:19,672 INFO L242 Difference]: Finished difference. Result has 152 places, 96 transitions, 543 flow [2022-01-19 11:20:19,672 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=543, PETRI_PLACES=152, PETRI_TRANSITIONS=96} [2022-01-19 11:20:19,673 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 55 predicate places. [2022-01-19 11:20:19,673 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 96 transitions, 543 flow [2022-01-19 11:20:19,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 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 11:20:19,674 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:19,674 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] [2022-01-19 11:20:19,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 11:20:19,674 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 11:20:19,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:19,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1275871501, now seen corresponding path program 1 times [2022-01-19 11:20:19,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:19,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81546749] [2022-01-19 11:20:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:19,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:19,786 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 11:20:19,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:19,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81546749] [2022-01-19 11:20:19,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81546749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:19,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:19,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 11:20:19,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317771387] [2022-01-19 11:20:19,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:19,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 11:20:19,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:19,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 11:20:19,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 11:20:19,789 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-01-19 11:20:19,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 96 transitions, 543 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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 11:20:19,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:19,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-01-19 11:20:19,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:20,146 INFO L129 PetriNetUnfolder]: 1215/2509 cut-off events. [2022-01-19 11:20:20,146 INFO L130 PetriNetUnfolder]: For 3490/3642 co-relation queries the response was YES. [2022-01-19 11:20:20,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5593 conditions, 2509 events. 1215/2509 cut-off events. For 3490/3642 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 19394 event pairs, 55 based on Foata normal form. 0/2299 useless extension candidates. Maximal degree in co-relation 5554. Up to 806 conditions per place. [2022-01-19 11:20:20,175 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 35 selfloop transitions, 20 changer transitions 0/135 dead transitions. [2022-01-19 11:20:20,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 135 transitions, 735 flow [2022-01-19 11:20:20,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 11:20:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 11:20:20,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 917 transitions. [2022-01-19 11:20:20,177 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2022-01-19 11:20:20,177 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 917 transitions. [2022-01-19 11:20:20,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 917 transitions. [2022-01-19 11:20:20,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:20,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 917 transitions. [2022-01-19 11:20:20,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.7) internal successors, (917), 10 states have internal predecessors, (917), 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 11:20:20,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 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 11:20:20,182 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 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 11:20:20,182 INFO L186 Difference]: Start difference. First operand has 152 places, 96 transitions, 543 flow. Second operand 10 states and 917 transitions. [2022-01-19 11:20:20,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 135 transitions, 735 flow [2022-01-19 11:20:20,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 666 flow, removed 21 selfloop flow, removed 16 redundant places. [2022-01-19 11:20:20,194 INFO L242 Difference]: Finished difference. Result has 142 places, 114 transitions, 617 flow [2022-01-19 11:20:20,194 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=617, PETRI_PLACES=142, PETRI_TRANSITIONS=114} [2022-01-19 11:20:20,195 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 45 predicate places. [2022-01-19 11:20:20,195 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 114 transitions, 617 flow [2022-01-19 11:20:20,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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 11:20:20,196 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:20,196 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] [2022-01-19 11:20:20,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 11:20:20,196 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 11:20:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1855032157, now seen corresponding path program 1 times [2022-01-19 11:20:20,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:20,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671154590] [2022-01-19 11:20:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:20,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:20,295 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 11:20:20,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:20,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671154590] [2022-01-19 11:20:20,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671154590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:20,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:20,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:20:20,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659110651] [2022-01-19 11:20:20,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:20,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:20:20,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:20:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:20:20,297 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-01-19 11:20:20,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 114 transitions, 617 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:20,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:20,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-01-19 11:20:20,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:20,801 INFO L129 PetriNetUnfolder]: 1362/2761 cut-off events. [2022-01-19 11:20:20,801 INFO L130 PetriNetUnfolder]: For 8749/10421 co-relation queries the response was YES. [2022-01-19 11:20:20,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10561 conditions, 2761 events. 1362/2761 cut-off events. For 8749/10421 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 21928 event pairs, 14 based on Foata normal form. 183/2781 useless extension candidates. Maximal degree in co-relation 10529. Up to 1489 conditions per place. [2022-01-19 11:20:20,829 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 38 selfloop transitions, 38 changer transitions 3/159 dead transitions. [2022-01-19 11:20:20,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 159 transitions, 1067 flow [2022-01-19 11:20:20,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:20:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:20:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1193 transitions. [2022-01-19 11:20:20,833 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.873992673992674 [2022-01-19 11:20:20,833 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1193 transitions. [2022-01-19 11:20:20,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1193 transitions. [2022-01-19 11:20:20,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:20,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1193 transitions. [2022-01-19 11:20:20,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 91.76923076923077) internal successors, (1193), 13 states have internal predecessors, (1193), 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 11:20:20,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:20:20,839 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:20:20,839 INFO L186 Difference]: Start difference. First operand has 142 places, 114 transitions, 617 flow. Second operand 13 states and 1193 transitions. [2022-01-19 11:20:20,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 159 transitions, 1067 flow [2022-01-19 11:20:20,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 159 transitions, 1009 flow, removed 28 selfloop flow, removed 6 redundant places. [2022-01-19 11:20:20,852 INFO L242 Difference]: Finished difference. Result has 154 places, 135 transitions, 858 flow [2022-01-19 11:20:20,852 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=858, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2022-01-19 11:20:20,853 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 57 predicate places. [2022-01-19 11:20:20,853 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 858 flow [2022-01-19 11:20:20,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:20,854 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:20,854 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] [2022-01-19 11:20:20,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 11:20:20,854 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 11:20:20,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:20,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1156770652, now seen corresponding path program 1 times [2022-01-19 11:20:20,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:20,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107770330] [2022-01-19 11:20:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:20,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:20,943 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 11:20:20,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:20,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107770330] [2022-01-19 11:20:20,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107770330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:20,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:20,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 11:20:20,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831760676] [2022-01-19 11:20:20,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:20,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 11:20:20,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:20,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 11:20:20,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 11:20:20,946 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-01-19 11:20:20,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 858 flow. Second operand has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 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 11:20:20,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:20,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-01-19 11:20:20,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:21,465 INFO L129 PetriNetUnfolder]: 1238/2619 cut-off events. [2022-01-19 11:20:21,466 INFO L130 PetriNetUnfolder]: For 21095/24378 co-relation queries the response was YES. [2022-01-19 11:20:21,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13912 conditions, 2619 events. 1238/2619 cut-off events. For 21095/24378 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 21712 event pairs, 1 based on Foata normal form. 261/2719 useless extension candidates. Maximal degree in co-relation 13879. Up to 1357 conditions per place. [2022-01-19 11:20:21,499 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 29 selfloop transitions, 56 changer transitions 21/186 dead transitions. [2022-01-19 11:20:21,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 186 transitions, 1560 flow [2022-01-19 11:20:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 11:20:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 11:20:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1467 transitions. [2022-01-19 11:20:21,502 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8732142857142857 [2022-01-19 11:20:21,502 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1467 transitions. [2022-01-19 11:20:21,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1467 transitions. [2022-01-19 11:20:21,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:21,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1467 transitions. [2022-01-19 11:20:21,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 91.6875) internal successors, (1467), 16 states have internal predecessors, (1467), 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 11:20:21,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 105.0) internal successors, (1785), 17 states have internal predecessors, (1785), 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 11:20:21,509 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 105.0) internal successors, (1785), 17 states have internal predecessors, (1785), 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 11:20:21,509 INFO L186 Difference]: Start difference. First operand has 154 places, 135 transitions, 858 flow. Second operand 16 states and 1467 transitions. [2022-01-19 11:20:21,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 186 transitions, 1560 flow [2022-01-19 11:20:21,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 186 transitions, 1451 flow, removed 45 selfloop flow, removed 4 redundant places. [2022-01-19 11:20:21,574 INFO L242 Difference]: Finished difference. Result has 171 places, 152 transitions, 1102 flow [2022-01-19 11:20:21,574 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1102, PETRI_PLACES=171, PETRI_TRANSITIONS=152} [2022-01-19 11:20:21,575 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 74 predicate places. [2022-01-19 11:20:21,575 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 152 transitions, 1102 flow [2022-01-19 11:20:21,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 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 11:20:21,576 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:21,576 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] [2022-01-19 11:20:21,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 11:20:21,576 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 11:20:21,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:21,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1964548473, now seen corresponding path program 1 times [2022-01-19 11:20:21,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:21,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40377377] [2022-01-19 11:20:21,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:21,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:21,644 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 11:20:21,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:21,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40377377] [2022-01-19 11:20:21,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40377377] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:21,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:21,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:20:21,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883759870] [2022-01-19 11:20:21,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:21,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:20:21,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:21,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:20:21,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:20:21,646 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-01-19 11:20:21,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 152 transitions, 1102 flow. Second operand has 7 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:21,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:21,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-01-19 11:20:21,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:21,984 INFO L129 PetriNetUnfolder]: 710/2295 cut-off events. [2022-01-19 11:20:21,984 INFO L130 PetriNetUnfolder]: For 15275/15658 co-relation queries the response was YES. [2022-01-19 11:20:21,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9930 conditions, 2295 events. 710/2295 cut-off events. For 15275/15658 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 22296 event pairs, 21 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 9891. Up to 592 conditions per place. [2022-01-19 11:20:22,004 INFO L132 encePairwiseOnDemand]: 98/105 looper letters, 21 selfloop transitions, 6 changer transitions 4/162 dead transitions. [2022-01-19 11:20:22,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 162 transitions, 1202 flow [2022-01-19 11:20:22,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 11:20:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 11:20:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 717 transitions. [2022-01-19 11:20:22,006 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8535714285714285 [2022-01-19 11:20:22,006 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 717 transitions. [2022-01-19 11:20:22,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 717 transitions. [2022-01-19 11:20:22,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:22,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 717 transitions. [2022-01-19 11:20:22,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.625) internal successors, (717), 8 states have internal predecessors, (717), 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 11:20:22,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 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 11:20:22,009 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 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 11:20:22,009 INFO L186 Difference]: Start difference. First operand has 171 places, 152 transitions, 1102 flow. Second operand 8 states and 717 transitions. [2022-01-19 11:20:22,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 162 transitions, 1202 flow [2022-01-19 11:20:22,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 162 transitions, 999 flow, removed 65 selfloop flow, removed 12 redundant places. [2022-01-19 11:20:22,133 INFO L242 Difference]: Finished difference. Result has 170 places, 152 transitions, 920 flow [2022-01-19 11:20:22,133 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=920, PETRI_PLACES=170, PETRI_TRANSITIONS=152} [2022-01-19 11:20:22,134 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 73 predicate places. [2022-01-19 11:20:22,134 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 152 transitions, 920 flow [2022-01-19 11:20:22,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:22,134 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:22,135 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] [2022-01-19 11:20:22,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 11:20:22,135 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 11:20:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:22,135 INFO L85 PathProgramCache]: Analyzing trace with hash 720567241, now seen corresponding path program 2 times [2022-01-19 11:20:22,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:22,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095177351] [2022-01-19 11:20:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:22,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:22,216 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 11:20:22,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:22,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095177351] [2022-01-19 11:20:22,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095177351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:22,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:22,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 11:20:22,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706731658] [2022-01-19 11:20:22,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:22,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 11:20:22,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:22,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 11:20:22,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-19 11:20:22,219 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-01-19 11:20:22,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 152 transitions, 920 flow. Second operand has 9 states, 9 states have (on average 87.55555555555556) internal successors, (788), 9 states have internal predecessors, (788), 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 11:20:22,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:22,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-01-19 11:20:22,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:22,725 INFO L129 PetriNetUnfolder]: 1173/2661 cut-off events. [2022-01-19 11:20:22,725 INFO L130 PetriNetUnfolder]: For 6973/8589 co-relation queries the response was YES. [2022-01-19 11:20:22,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10301 conditions, 2661 events. 1173/2661 cut-off events. For 6973/8589 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 23886 event pairs, 1 based on Foata normal form. 269/2741 useless extension candidates. Maximal degree in co-relation 10262. Up to 393 conditions per place. [2022-01-19 11:20:22,750 INFO L132 encePairwiseOnDemand]: 96/105 looper letters, 0 selfloop transitions, 0 changer transitions 166/166 dead transitions. [2022-01-19 11:20:22,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 166 transitions, 1215 flow [2022-01-19 11:20:22,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 11:20:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 11:20:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1623 transitions. [2022-01-19 11:20:22,753 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8587301587301587 [2022-01-19 11:20:22,753 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1623 transitions. [2022-01-19 11:20:22,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1623 transitions. [2022-01-19 11:20:22,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:22,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1623 transitions. [2022-01-19 11:20:22,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.16666666666667) internal successors, (1623), 18 states have internal predecessors, (1623), 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 11:20:22,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 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 11:20:22,759 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 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 11:20:22,759 INFO L186 Difference]: Start difference. First operand has 170 places, 152 transitions, 920 flow. Second operand 18 states and 1623 transitions. [2022-01-19 11:20:22,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 166 transitions, 1215 flow [2022-01-19 11:20:22,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 166 transitions, 1140 flow, removed 5 selfloop flow, removed 12 redundant places. [2022-01-19 11:20:22,837 INFO L242 Difference]: Finished difference. Result has 163 places, 0 transitions, 0 flow [2022-01-19 11:20:22,837 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=163, PETRI_TRANSITIONS=0} [2022-01-19 11:20:22,838 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 66 predicate places. [2022-01-19 11:20:22,838 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 0 transitions, 0 flow [2022-01-19 11:20:22,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.55555555555556) internal successors, (788), 9 states have internal predecessors, (788), 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 11:20:22,840 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-01-19 11:20:22,841 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-01-19 11:20:22,841 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-01-19 11:20:22,841 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-01-19 11:20:22,841 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-01-19 11:20:22,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 11:20:22,845 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:20:22,846 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 11:20:22,847 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 11:20:22,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 11:20:22 BasicIcfg [2022-01-19 11:20:22,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 11:20:22,849 INFO L158 Benchmark]: Toolchain (without parser) took 7933.06ms. Allocated memory was 350.2MB in the beginning and 570.4MB in the end (delta: 220.2MB). Free memory was 295.3MB in the beginning and 254.6MB in the end (delta: 40.7MB). Peak memory consumption was 264.0MB. Max. memory is 16.0GB. [2022-01-19 11:20:22,849 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 312.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 11:20:22,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 507.39ms. Allocated memory was 350.2MB in the beginning and 471.9MB in the end (delta: 121.6MB). Free memory was 295.1MB in the beginning and 436.6MB in the end (delta: -141.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.0GB. [2022-01-19 11:20:22,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.49ms. Allocated memory is still 471.9MB. Free memory was 436.3MB in the beginning and 434.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 11:20:22,850 INFO L158 Benchmark]: Boogie Preprocessor took 34.20ms. Allocated memory is still 471.9MB. Free memory was 434.5MB in the beginning and 432.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 11:20:22,850 INFO L158 Benchmark]: RCFGBuilder took 387.47ms. Allocated memory is still 471.9MB. Free memory was 432.4MB in the beginning and 418.7MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 11:20:22,851 INFO L158 Benchmark]: TraceAbstraction took 6936.71ms. Allocated memory was 471.9MB in the beginning and 570.4MB in the end (delta: 98.6MB). Free memory was 418.7MB in the beginning and 254.6MB in the end (delta: 164.1MB). Peak memory consumption was 264.6MB. Max. memory is 16.0GB. [2022-01-19 11:20:22,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 312.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 507.39ms. Allocated memory was 350.2MB in the beginning and 471.9MB in the end (delta: 121.6MB). Free memory was 295.1MB in the beginning and 436.6MB in the end (delta: -141.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.49ms. Allocated memory is still 471.9MB. Free memory was 436.3MB in the beginning and 434.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.20ms. Allocated memory is still 471.9MB. Free memory was 434.5MB in the beginning and 432.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 387.47ms. Allocated memory is still 471.9MB. Free memory was 432.4MB in the beginning and 418.7MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 6936.71ms. Allocated memory was 471.9MB in the beginning and 570.4MB in the end (delta: 98.6MB). Free memory was 418.7MB in the beginning and 254.6MB in the end (delta: 164.1MB). Peak memory consumption was 264.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 134 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.8s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 617 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 617 mSDsluCounter, 858 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 859 mSDsCounter, 183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 900 IncrementalHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 183 mSolverCounterUnsat, 195 mSDtfsCounter, 900 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1102occurred in iteration=9, InterpolantAutomatonStates: 139, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 746 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 735 ConstructedInterpolants, 0 QuantifiedInterpolants, 2987 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 11:20:22,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...